Journal articles on the topic 'Comfort microclimatico indoor'
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1
Vecchi, Renata De, Christhina Maria Cândido, and Roberto Lamberts. "Thermal history and comfort in a Brazilian subtropical climate: a 'cool' addiction hypothesis." Ambiente Construído 16, no. 1 (January 2016): 7–20. http://dx.doi.org/10.1590/s1678-86212016000100057.
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Abstract Currently, there is a rising trend for commercial buildings to use air conditioning to provide indoor thermal comfort. This paper focuses on the impact of prolonged exposure to indoor air-conditioned environments on occupants' thermal acceptability and preferences in a mixed-mode building in Brazil. Questionnaires were administered while indoor microclimatic measurements were carried out (i.e., air temperature, radiant air temperature, air speed and humidity). Results suggest significant differences in occupants' thermal acceptability and cooling preferences based on thermal history; differences were found between groups based on different physical characteristics (i.e., different gender and body condition). The findings also indicated a significant potential to implement temperature fluctuations indoors when occupants are exposed to air conditioning environments in warm and humid climates.
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Yasa, Enes. "The Interaction of Wind Velocity and Air Gap Width on the Thermal Comfort in Naturally Ventilated Buildings with Multiple Skin Facade." Athens Journal of Τechnology & Engineering 9, no. 3 (August 31, 2022): 213–66. http://dx.doi.org/10.30958/ajte.9-3-4.
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A Multiple (MSF) or Double Skin Facade (DSF) is a building envelope system. It has an external and internal layer that contains buffer space used for controlled windy conditions, ventilation and solar protection. Employing a multiple or double-skin facade for natural ventilation is not an innovative idea, but the background on this mechanism and the impacts of these environmental and designing factors on its performance are still unknown and critically needed. Therefore, with this study, the influences of the Multiple or Double Skin Facade with different width air gaps configurations, alongside the environmental factor on buoyant-driven natural ventilation, are discussed. Naturally ventilated MSFs are often very intriguing in terms of a microclimatic comfort, but an optimum design is crucial to enhance the microclimatic comfort and therefore the proper operation of the entire system. Especially, the development of the system is important when working in a hot climate. There is a significant lack of data within the current literature to demonstrate the complexity and challenges in designing large, naturally ventilated buildings. For these sorts of buildings, it is important to possess the tools to gauge a design’s predicted performance to realize successful natural ventilation concepts. However, with the utilization of glass, heat loss during the winter and solar gain during the summer will increase energy loads. At the same time, this will also negatively effect the microclimatic comfort. Through this study, both the effect of the utilization of multiple facades on indoor comfort conditions and thus the effects of distances at different distances from the facade on wind flow and therefore microclimatic comfort at the situation of the Multiple Skin Facades were investigated. This paper demonstrates through a sensitivity analysis, an optimal strategy for completing a CFD simulation of this special building envelope. This study also attempts to research a mechanically ventilated building with DSF configuration—a building in terms of indoor microclimatic thermal comfort. The aim of this study is to work out the effect of wind velocity and wind distribution on naturally ventilated buildings with DSF configuration, to work out if a DSF configuration will provide a far better microclimatic thermal comfort through natural ventilation. This study not only defines and analyzes the dimensional parameters of the air gap to maximize airflows, but also explores the importance of design decisions on system performance, such as the interaction between thermal mass and air gap distances and the building facade. Keywords: double skin facade, microclimatic thermal performance, airflow modelling, ındoor microclimatic thermal comfort, wind velocity, wind distribution, CFD, natural ventilation performance simulation
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Yasa, Enes. "Microclimatic comfort measurements evaluation of building physics: The effect of building form and building settled area, on pedestrian level comfort around buildings." Journal of Building Physics 40, no. 5 (July 27, 2016): 472–500. http://dx.doi.org/10.1177/1744259115621979.
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Wind discomfort and the dangers that the wind may lead can be harmful in terms of comfort conditions of both indoor and outdoor environment of the building/buildings to be constructed or just completed. The extent of discomfort to pedestrian varies from inducing slightly unpleasant feeling to producing a falling down hazard. Typically, the cause of frequent occurrences of strong wind at pedestrian area is primary related to the configuration of building structures and/or topography in the vicinity of the pedestrian area. Depending on the characteristics of the wind including magnitude, uniformity, ambient temperature, and so on, the level of disturbance to users of pedestrian areas can be different. In this context, the regions where Necmettin Erbakan University temporary education buildings are located have a fairly intensive topography in terms of wind. Therefore, detailed analysis of the inside regions and the surrounding areas of education buildings in particular are performed in terms of microclimatic comfort and indoor energy recovery. Especially, the topography where university campus temporary educational buildings are located has very high wind climate conditions compared to the city of Konya climate conditions. In this study, pedestrian-level wind conditions around N.E.U. campus buildings and in urban areas and the topography of campus settlements were analyzed through on-site measurement with Delta OHM microclimatic instruments. The purpose of this study is to investigate the pedestrian-level comfort conditions around the project buildings suggested by concept architects together with microclimatic measurements of comfort conditions, in the light of current topographic and climatic conditions presented by the head architect. However, presentation of these topographic and microclimatic measurements around currently completed temporary classrooms of the university campus have not yet been completed. The topography of the university campus, which is at an altitude higher than that of Konya centrum, is exposed to an extremely high wind velocity. The pedestrian-level comfort conditions are measured using Delta OHM instrument. The study also aims to compare pedestrian-level comfort conditions at locations of various buildings. In addition, outdoor comfort survey was also conducted in the campus area. However, measurement results of the microclimatic measurement device, DeltaOHM, are evaluated in this study. It can be observed from the results that pedestrian-level comfort of current campus settlements around the buildings reach very discomforting levels. Since the university’s topography varies between very high and very low temperature levels and wind velocity values, climatic comfort problems are observed in the area. Some reasons for the discomfort problems observed in current settlement are; incorrect use of climatic parameters, incorrect directions of buildings, thermal effects due incorrect selection of materials used in constructions of buildings. In order to achieve thermal comfort, more studies are required on pedestrian-level comfort, use of passive design techniques such as correct direction of buildings and correct selection of materials utilized in the buildings based on their thermal effects. This would help university campus buildings consume less energy and maximize people’s satisfaction.
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Bonora, Anna, Kristian Fabbri, and Marco Pretelli. "Historic Indoor Microclimate, the role of HVAC in heritage buildings’ restoration: the case of the Palace of Venaria Reale." Journal of Physics: Conference Series 2069, no. 1 (November 1, 2021): 012078. http://dx.doi.org/10.1088/1742-6596/2069/1/012078.
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Abstract The paper is aimed to illustrate how the study of the indoor microclimate, supported by the virtual simulation and by the knowledge of the historical evolutions of the building (managerial, usage and architectonical changes over the years), represents a preventive practice which allows to evaluate and predict the interactions between the object and the environment. To do that the authors present a case-study: room 33 in the Palace of Venaria Reale, in Turin, Italy. We have reproduced a virtual building model which presents the same indoor and outdoor microclimatic conditions of the original building. Moreover, we evaluated an alternative scenario that simulates the indoor microclimate of room 33 considering the HVAC systems continuously off. The comparison between the two virtual buildings allowed to estimate the impact of the HVAC system on the preventive conservation of the historical building, of the artefacts and of the occupants’ thermal comfort. Those simulations clarified which indoor microclimatic conditions could be guaranteed by the building itself, after the restoration project of the whole Palace started in 2001.
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Valdiserri, Paolo, Silvia Cesari, Maddalena Coccagna, Pasquale Romio, and Sante Mazzacane. "Experimental Data and Simulations of Performance and Thermal Comfort in a Patient Room Equipped with Radiant Ceiling Panels." Buildings 10, no. 12 (December 11, 2020): 235. http://dx.doi.org/10.3390/buildings10120235.
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Hospitals require the highest energy demands in non-residential buildings. They provide healthcare 24/7/365 and, at the same time, they ensure indoor air quality, thermal comfort and sterility. However, several studies reveal that high indoor temperatures and low relative humidity (RH) are often perceived in patient rooms during the heating season, suggesting an important energy saving potential. Against this background, radiant ceiling panel (RCP) systems result to be one of the most appropriate solutions as they allow to achieve significant energy savings while providing the highest level of thermal and acoustic comfort, as well as of infection control. In the present study the microclimatic survey of a patient room at Maggiore Hospital in Bologna, Italy, equipped with an air conditioning system integrated with RCP, has reported occupant thermal discomfort. Experimental data were used to calibrate a building model and dynamic building energy simulations were carried out to analyse indoor air temperature, relative humidity, predicted mean vote (PMV) and predicted percentage of dissatisfied (PPD) indexes under different inlet air temperatures, to identify the best design conditions for energy efficiency and thermal comfort improvement. It was found that the highest advantages can be obtained when neutral air is supplied.
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Zong, Hua, Jiao Wang, Ting Zhou, Jiarui Sun, and Xuehong Chen. "The Influence of Transient Changes in Indoor and Outdoor Thermal Comfort on the Use of Outdoor Space by Older Adults in the Nursing Home." Buildings 12, no. 7 (June 26, 2022): 905. http://dx.doi.org/10.3390/buildings12070905.
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Recently, the requirements regarding the environment of nursing homes are high, because the elderly are a vulnerable group with limited adaptive capacity to respond to transient environmental change. This paper presents a field investigation on the influence of transient thermal comfort changes between the indoor and outdoor spaces (i.e., air temperature (Ta), solar radiation (SR), relative humidity (RH), wind speed (WS), and the thermal comfort indices of Universal Thermal Index (UTCI)) on the willingness of the elderly to use outdoor spaces of the Wanxia nursing home of Chengdu City. Results indicated that, in summer, the mean UTCI values of indoor and corridor spaces corresponded to the level of moderate heat stress, while those of road and garden corresponded to the strong heat stress level. Road and garden spaces even showed moderate heat stress in spring. Approximately 28.93% (139) of the elderly living here used outdoor spaces every day. The morning period (from 9:00 a.m. to 10:00 a.m.) was the elderly’s favorited period for using outdoor spaces in seasons. The microclimatic transient differences between indoor and outdoor spaces ranged from 0.47 °C to 2.93 °C (|ΔTa|), from 86.09 W/m2 to 206.76 W/m2 (|ΔSR|), from 5.29% to 14.76% (ΔRH), from 0.01 m/s to 0.07 m/s (|ΔWS|), and from 0.25 °C to 2.25 °C (ΔUTCI). These big microclimate differences could cause enormous health risks for the elderly in the process of indoor and outdoor space conversion. The minimal transient change occurred between corridors and indoors. Pearson correlation analysis indicated ΔTa and ΔRH between indoor and outdoor spaces were the primary meteorological factors that influenced the elderly’s willing to use outdoor spaces. The elderly preferred to live in a constant Ta and RH environment. Only when the ΔTa and ΔRH are small enough to resemble a steady-state (ΔUTCI ≤ 0.5 °C), ΔWS and ΔSI could affect the elderly’s choice of using outdoor space. Optimal design strategies were put forward for reducing the transient differences between indoor and outdoor microclimates to inspire the elderly to use outdoor spaces safely, including improving outdoor canopy coverage and indoor mechanical ventilation.
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Abdul Halim, Noor Hafizah, Nor Zaini Zakaria, and Azni Zain Ahmed. "Thermal and Energy Performance of Pitch and Wall Insulation for Air-Conditioned Buildings in Malaysia." Applied Mechanics and Materials 209-211 (October 2012): 1766–69. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.1766.
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Thermal design of building envelope and microclimatic conditions influence the indoor thermal comfort conditions and energy consumption of buildings. This paper presents the findings of study conducted to investigate the effect of building insulation on thermal impact and energy for cooling. The study were performed via computer simulation using a whole-building thermal energy software Integrated Environmental Solution (IES) with ApacheSim 5.9.2. The results show that pitch insulation (PITCH) was more effective to reduce the attic temperature but both pitch and wall insulation (WALL) had nominal thermal improvement for the indoor. However, compared to the BASE model, WALL model gave a significant savings of 41% for cooling
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Giyasov, Adham, and Saidmuhammad Mirzoev. "Innovative facade systems for buildings in hot climate conditions." E3S Web of Conferences 263 (2021): 04009. http://dx.doi.org/10.1051/e3sconf/202126304009.
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The article considers the current state of construction of enclosing walls with facade systems for southern latitudes with a hot climate, taking into account the thermal air envelope formed at the walls of buildings of different orientations under the condition of facade insolation. The influence of the total temperature on the external enclosing structure of buildings, depending on their orientation and the conditions of insolation, is determined. The significance of the external walls of buildings under different conditions of facade insolation in the regulation of the heat-wind regime of the wall microclimatic layer of the air and the room is revealed. The list of facade systems for improving the ventilation of the wall layer of air, premises and the territory adjacent to the building, which are of crucial importance in ensuring the microclimatic comfort of the indoor environment in the problem of improving the energy efficiency of buildings, is formulated.
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Poljak, Michal, and Radoslav Ponechal. "Microclimatic Monitoring—The Beginning of Saving Historical Sacral Buildings in Europe." Energies 16, no. 3 (January 20, 2023): 1156. http://dx.doi.org/10.3390/en16031156.
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A suitable indoor climate positively affects the lifespan of historical building structures. The path to an agreeable climate begins with monitoring current conditions. Considerable attention is given to monitoring the indoor climate of historical buildings. The motivation for monitoring air temperature and surface temperatures, relative air humidity or airflow can be, for example, the installation of heating, the occurrence of biotic damage, and others. Through the analysis of the most frequently used keywords, a strong connection was found, for example, between thermal comfort and the church. This review also summarises the various reasons for conducting microclimate monitoring studies in historical religious buildings on the European continent. It is supplemented with an evaluation of the monitoring methodology from the chosen period of the year point of view, the measured parameters, and the length of the interval between the recordings of quantities. It was found that in more than one-third of the cases, the recording time was less than or equal to 15 min, but mostly less than or equal to 1 h. Quite often, monitoring results are used to calibrate a simulation model describing the hydrothermal behaviour of a historical object under various operation alternatives (e.g., influence of ventilation, climate change, occupancy, etc.). This way, it is possible to test various intelligent systems in the virtual world without much risk before they are used in an actual building application.
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Ruggiero, Silvia, Francesco Tariello, and Giuseppe Peter Vanoli. "Evaluation of Comfort Models Considering the Peculiarities of Hospitalization: Bedding, Clothing and Reduced Activity of Patients." Buildings 12, no. 3 (March 11, 2022): 343. http://dx.doi.org/10.3390/buildings12030343.
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The study of thermo-hygrometric comfort in hospitals involves several factors: the presence of different subjects: patients, operators, visitors; different conditions of hospitalization: patients bedridden or out of bed; psychological aspects and therapeutic treatments. In this paper, the analysis focuses on patients in ordinary hospitalization rooms of a hospital located in southern Italy. Different room orientations, several characteristics, and specific factors concerning hospitalized patients’ conditions that significantly influence the comfort indices have been considered. In total, 41 scenarios have been defined and analyzed by means of two comfort models: static and adaptive. The study aims to investigate the application of these models to the complex environment of hospitals, finding strengths and weaknesses, which also results in a re-definition of the HVAC system operation. Results show that patient position (in bed or out), clothing type, and level of coverage in the bed can make the same microclimatic condition more suitable for one scenario over another. Furthermore, room exposure has an effect on the comfort of the indoor temperature. The seasonal analyses highlight that during summer, for all scenarios considering bedridden patients, more than 50% of the PMV calculated values are out of the comfort zone. In winter, the indoor conditions are good for bedridden patients with a cover level of 67% during the nighttime (almost 100% PMV values in comfort zone), while during the daytime, they are more suitable for a 48% coverage level if the patient is in bed or if they are walking (lower than 10% dissatisfied).
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Marcu, Florin, Nicolaie Hodor, Liliana Indrie, Paula Dejeu, Marin Ilieș, Adina Albu, Mircea Sandor, et al. "Microbiological, Health and Comfort Aspects of Indoor Air Quality in a Romanian Historical Wooden Church." International Journal of Environmental Research and Public Health 18, no. 18 (September 20, 2021): 9908. http://dx.doi.org/10.3390/ijerph18189908.
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Monitoring the indoor microclimate in old buildings of cultural heritage and significance is a practice of great importance because of the importance of their identity for local communities and national consciousness. Most aged heritage buildings, especially those made of wood, develop an indoor microclimate conducive to the development of microorganisms. This study aims to analyze one wooden church dating back to the 1710s in Romania from the microclimatic perspective, i.e., temperature and relative humidity and the fungal load of the air and surfaces. One further aim was to determine if the internal microclimate of the monument is favorable for the health of parishioners and visitors, as well as for the integrity of the church itself. The research methodology involved monitoring of the microclimate for a period of nine weeks (November 2020–January 2021) and evaluating the fungal load in indoor air as well as on the surfaces. The results show a very high contamination of air and surfaces (>2000 CFU/m3). In terms of fungal contamination, Aspergillus spp. (two different species), Alternaria spp., Cladosporium spp., Mucor spp., Penicillium spp. (two different species) and Trichopyton spp. were the genera of fungi identified in the indoor wooden church air and Aspergillus spp., Cladosporium spp., Penicillium spp. (two different species) and Botrytis spp. on the surfaces (church walls and iconostasis). The results obtained reveal that the internal microclimate not only imposes a potential risk factor for the parishioners and visitors, but also for the preservation of the wooden church as a historical monument, which is facing a crisis of biodeterioration of its artwork.
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Elnabawi, Mohamed H., and Neveen Hamza. "Behavioural Perspectives of Outdoor Thermal Comfort in Urban Areas: A Critical Review." Atmosphere 11, no. 1 (December 31, 2019): 51. http://dx.doi.org/10.3390/atmos11010051.
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The thermal characteristics of outdoor urban spaces and the street networks connecting them are vital to the assessment of the liveability and sustainability of cities. When urban spaces are thermally comfortable, city dwellers spend more time outdoors. This has several benefits for human health and wellbeing, also reducing indoor energy consumption and contributing to local economy. Studies on outdoor thermal comfort have highlighted the need to develop interdisciplinary frameworks that integrate physical, physiological, psychological, and social parameters to assist urban planners and designers in design decisions. In this paper, an extensive literature review of outdoor thermal comfort studies over the past decade was undertaken, including both rational and adaptive thermal comfort approaches, from the contextualize the behaviour perspectives related to the use of urban space. Consequently, the paper suggests a comprehensive framework for evaluating the relationship between the quantitative and qualitative parameters linking the microclimatic environment with subjective thermal assessment and social behaviour. The framework aims to contribute to the development of exclusive thermal comfort standards for outdoor urban settings.
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Efthymiou, Chrysanthi, Nikolaos Barmparesos, Panagiotis Tasios, Vasileios Ntouros, Vasileios Zoulis, Theoni Karlessi, José Manuel Salmerón Lissén, and Margarita Niki Assimakopoulos. "Indoor Environmental Quality Evaluation Strategy as an Upgrade (Renovation) Measure in a Historic Building Located in the Mediterranean Zone (Athens, Greece)." Applied Sciences 11, no. 21 (October 28, 2021): 10133. http://dx.doi.org/10.3390/app112110133.
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The assessment of indoor environmental quality in historic buildings converted to museums is a significant tool in deep energy renovation processes, as it provides insights for the microclimatic conditions in the interiors of the building where vast numbers of visitors walk every year and where artifacts that are vulnerable to pollution are exhibited. In this work, aiming to contribute to the development of an energy retrofitting protocol applied in the Mediterranean region (HAPPEN MedZeb protocol) for museums hosted in historic buildings by providing useful data, an experimental campaign to evaluate the indoor environmental quality of a museum housed in a historic building located in Athens took place from February 2019 to April 2021 and was divided into two periods. The findings revealed high concentrations of volatile organic compounds as well as poor thermal comfort levels since the sensors recorded low acceptable percentages of T values within the limits from 7 to 33% for the entire experimental period. Based on the findings, recommendations for retrofitting interventions are made.
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Bibbiani, Carlo, Fabio Fantozzi, Caterina Gargari, Carlo Alberto Campiotti, and Patrizia De Rossi. "Bioclimatic greenhouses for energy efficiency in buildings." RIVISTA DI STUDI SULLA SOSTENIBILITA', no. 2 (January 2020): 213–30. http://dx.doi.org/10.3280/riss2019-002-s1014.
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The research aims to verify the contribution to microclimatic comfort offered by the bioclimatic solar greenhouse at the ENEA Casaccia, F92 building. The analysis was carried out using the opensource software, EnergyPlus, for thermal simulation and dynamic energy diagnosis of buildings, based on the 3D geometric model built using the Google SketchUp software. The simulation led to evaluate the gained energy from solar radiation through the glazed surfaces due to the bioclimatic greenhouse and the consequent increase in the operating temperature of the internal environment during the winter season. The research moves from the most recent regulatory developments in terms of energy saving and more modern technology developments related to the design and construction of high energy performance solar control glass elements to demonstrate the effectiveness of bioclimatic greenhouse systems in improving internal comfort levels reducing non-renewable energy consumption for indoor air conditioning. The Temperature hourly trends showed an average increase in the operating T°, during the winter season of about 0.59°C.
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Szulc, Justyna, Robert Cichowicz, Michał Gutarowski, Małgorzata Okrasa, and Beata Gutarowska. "Assessment of Dust, Chemical, Microbiological Pollutions and Microclimatic Parameters of Indoor Air in Sports Facilities." International Journal of Environmental Research and Public Health 20, no. 2 (January 14, 2023): 1551. http://dx.doi.org/10.3390/ijerph20021551.
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The aim of this study was to analyse the quality of indoor air in sport facilities in one of the sport centres in Poland with respect to microclimatic parameters (temperature, humidity, and air flow velocity), particulate matter concentrations (PM10, PM4, PM2.5, and PM1), gas concentrations (oxygen, ozone, hydrogen sulphide, sulphur dioxide, volatile organic compounds, and benzopyrene), and microbial contamination (the total number of bacteria, specifically staphylococci, including Staphylococcus aureus, haemolytic bacteria, Enterobacteriaceae, Pseudomonas fluorescens, actinomycetes, and the total number of fungi and xerophilic fungi). Measurements were made three times in May 2022 at 28 sampling points in 5 different sporting areas (the climbing wall, swimming pool, swimming pool changing room, and basketball and badminton courts) depending on the time of day (morning or afternoon) and on the outside building. The obtained results were compared with the standards for air quality in sports facilities. The air temperature (21–31 °C) was at the upper limit of thermal comfort, while the air humidity (RH < 40%) in the sports halls in most of the locations was below demanded values. The values for dust pollution in all rooms, except the swimming pool, exceeded the permissible limits, especially in the afternoons. Climatic conditions correlated with a high concentration of dust in the indoor air. Particulate matter concentrations of all fractions exceeded the WHO guidelines in all researched premises; the largest exceedances of standards occurred for PM2.5 (five-fold) and for PM10 (two-fold). There were no exceedances of gaseous pollutant concentrations in the air, except for benzopyrene, which resulted from the influence of the outside air. The total number of bacteria (5.1 × 101–2.0 × 104 CFU m−3) and fungi (3.0 × 101–3.75 × 102 CFU m−3) was exceeded in the changing room and the climbing wall hall. An increased number of staphylococci in the afternoon was associated with a large number of people training. The increased concentration of xerophilic fungi in the air correlated with the high dust content and low air humidity. Along with the increase in the number of users in the afternoon and their activities, the concentration of dust (several times) and microorganisms (1–2 log) in the air increased by several times and 1–2 log, respectively. The present study indicates which air quality parameters should be monitored and provides guidelines on how to increase the comfort of those who practice sports and work in sports facilities.
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Zaniboni, Luca, Giovanni Pernigotto, Andrea Gasparella, and Ardeshir Mahdavi. "Experimental and numerical analysis of indoor environmental conditions in two physiotherapy facilities in Northern Italy." E3S Web of Conferences 111 (2019): 02067. http://dx.doi.org/10.1051/e3sconf/201911102067.
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The comfort conditions are fundamental for the well-being of the occupants of a building. The design of both building envelope and HVAC and lighting systems has primarily to keep high quality levels of indoor comfort conditions. This is particularly true for healthcare facilities, where a comfortable environment can mean both a faster healing of the patients and a higher productivity rate of the employees. In this research, a comfort survey is carried out in two physiotherapy facilities in Bolzano, Italy. Long- and short-term measurements of air temperature and relative humidity and short-term measurements of mean radiant temperature, air velocity, illuminance, CO2 and CO concentrations are taken in the environments where the therapies are performed, from summer to autumn of the year 2018. The long-term conditions are monitored using HOBO sensors, with a 10-minute recording timestep, and installed approximately at the height of 1 m, to evaluate the conditions at the same level at which the therapies are performed. A Delta-Ohm HD32.1 microclimatic station with several probes is employed in similar positions for short term monitoring periods. During the whole survey, according to their availability, employees and patients are asked to assess thermal, light, acoustic comfort and air quality by means of questionnaires, developed starting from standards and previous works in literature. In details, anonymous questions are asked to collect data about personal conditions (sex, age, weight, height, clothing level, self-evaluation of the health status), comfort evaluations (seven points scale questions), type of detected discomfort issues (multiple-choice questions), date, time and room where the treatment is performed. Thanks to the data measured at the same times of the questionnaires’ answers, Fanger’s comfort indexes are calculated according to the technical standard EN ISO 7730 and compared with the real votes collected using the questionnaires. The results, together with a previous analysis made in Vienna in 2015, give good suggestions about the diagnosis of the indoor environmental quality and the control of the HVAC systems in this kind of facilities.
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Bonora, A., K. Fabbri, and M. Pretelli. "ENVIRONMENTAL MICROCLIMATE MANAGEMENT AND RISK IN THE UNESCO WORLD HERITAGE SITE OF VILLA BARBARO MASER (ITALY)." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W11 (May 4, 2019): 269–76. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w11-269-2019.
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<p><strong>Abstract.</strong> Indoor environment in heritage buildings can be cause of damage for architecture and artefacts which depend on several physical and chemical parameters: air temperature, relative humidity, volatile organic compounds, etc. How is it possible to evaluate their damage, or the risk of damages? How “aggressive” is indoor microclimate? The scientific literature proposes several different criteria for the evaluation of the risk of damages, especially in the field of museums, while there are few studies which take into consideration historic buildings. In this paper we propose an index – the Heritage indoor Microclimate Risk (HMR) – that allows to define the risk concerning the whole environment and not only the artefacts. Moreover, we propose its application to a real case study of a UNESCO Heritage World Site, obtained through indoor microclimate on-site monitoring and building simulation. The case study reported is Villa Barbaro, built in Maser (1554–1560) by the architect Andrea Palladio and registered in the UNESCO World Heritage Site list since 1996, as Palladian Villa of Veneto. The research is structured as follows: monitoring campaign of the microclimatic parameters; virtual modelling of Villa Barbaro and its validation (by comparing the simulated data and the monitored ones); construction of scenarios which can aid to guarantee the historic building’s conservation and the occupants’ comfort; definition of HMR. The innovative aspect of the proposed methodology is the use of a virtual building model of heritage buildings, to determine, through a single index, the degree of risk and the level of indoor microclimate aggression.</p>
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Masi, Rosa Francesca De, Silvia Ruggiero, and Giuseppe Peter Vanoli. "Experimental Comparison of Heating Emitters in Mediterranean Climate." Applied Sciences 11, no. 12 (June 12, 2021): 5462. http://dx.doi.org/10.3390/app11125462.
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The need to increase the level of quality of indoor environments requires an extremely accurate definition of the microclimatic requisites to guarantee, in the spaces where people live and work, global and local conditions of comfort, considering, at the same time, the aspects related to energy savings and environmental sustainability. In this framework, the paper proposes a comparison of indoor parameters for three different types of heating emitters: fan-coils, baseboards heaters, and radiant floor systems. The comparison is based on seasonal monitoring performed in a test-room located in a Mediterranean climate; it can simulate an insulated room with office usage. The proposed indices demonstrate that the floor radiant system is characterized by lower horizontal and vertical differences in air temperature distribution that can guarantee more comfortable conditions and lower heat losses. The operative temperature is often higher than the neutral point; thus, management with a lower set-point temperature should be experimented with in further studies. More generally, the introduced method could help designers to choose the proper system and management strategy with the dual purpose to select a comfortable but energy savings-oriented operating temperature.
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Napoli, Grazia, Rossella Corrao, Gianluca Scaccianoce, Simona Barbaro, and Laura Cirrincione. "Public and Private Economic Feasibility of Green Areas as a Passive Energy Measure: A Case Study in the Mediterranean City of Trapani in Southern Italy." Sustainability 14, no. 4 (February 19, 2022): 2407. http://dx.doi.org/10.3390/su14042407.
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Green infrastructure in urban environments provides a wide range of ecological, social, aesthetic, and health co-benefits. Urban plant covers in particular contribute to improved outdoor environmental conditions that, in turn, influence the energy behavior of buildings and their indoor thermo-hygrometric comfort performance. Within this context, this study illustrates a methodology aimed at verifying the economic feasibility of alternative types of green areas for public and private stakeholders, which are analyzed as passive energy measures. Therefore, our methodology integrates approaches from different disciplines and consists of a microclimatic analysis of different vegetation scenarios and of the outdoor comfort level, an evaluation of the energy needs of a sample of houses, and an economic feasibility estimation considering different scenarios and public and private investors. The methodology is illustrated through its application to a suburban district of the Sicilian city of Trapani in the South of Italy, considered representative of Mediterranean climate conditions. Results showed significant differences between the scenario outcomes depending on the type of vegetation used in the green areas and put in evidence how economic feasibility for some stakeholders may be achieved in the management phase if adequate incentives equal to the planting cost are assumed.
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Zanni, Sara, Francesco Lalli, Eleonora Foschi, Alessandra Bonoli, and Luca Mantecchini. "Indoor Air Quality Real-Time Monitoring in Airport Terminal Areas: An Opportunity for Sustainable Management of Micro-Climatic Parameters." Sensors 18, no. 11 (November 6, 2018): 3798. http://dx.doi.org/10.3390/s18113798.
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Indoor air quality (IAQ) management in public spaces is assuming a remarkable importance. Busy environments, like airport terminals, are currently regarded as possible hotspots and IAQ is a crucial element for passengers and staff protection, as well as a key aspect of airport passenger experience. A one-month monitoring period has been performed on IAQ in the airport of Bologna (Italy), as prototypal example of large regional airport. Four strategic areas within the airport have been equipped with electronic monitoring platforms, including different contaminants and two microclimatic sensors. Data suggest that daily variation in IAQ parameters typically follow the activity pattern of the different environments under study (i.e., passengers’ flows) for gaseous contaminants, where particulate matter counts oscillate in a definite range, with a significant role played by ventilation system. Gaseous contaminants show a correlation between indoor and outdoor concentrations, mainly due to airside activities. Micro-climatic comfort parameters have been tested to match with standards for commercial environments. As results appears in line with typical households IAQ values, the current air ventilation system appears to be adequate. Nevertheless, an integrated air management system, based on real-time monitoring, would lead to optimization and improvement in environmental and economical sustainability.
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Mastellone, Margherita, Silvia Ruggiero, Dimitra Papadaki, Nikolaos Barmparesos, Anastasia Fotopoulou, Annarita Ferrante, and Margarita Niki Assimakopoulos. "Energy, Environmental Impact and Indoor Environmental Quality of Add-Ons in Buildings." Sustainability 14, no. 13 (June 22, 2022): 7605. http://dx.doi.org/10.3390/su14137605.
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On a European scale, the existing building stock has poor energy performance and particularly vulnerable structures. Indeed, most of the existing buildings were built before the introduction of energy standards and under structural safety criteria different from those currently required. It is therefore necessary the intervention in existing buildings according to an integrated approach that contemplates both the structural safety and the energy efficiency of buildings. This study, consistently with the objectives of the European research project “Proactive synergy of integrated Efficient Technologies on buildings’ Envelopes (Pro-GET-OnE)”, proposes a retrofit intervention for a student dormitory of the National and Kapodistrian University of Athens. The scope of the evaluation is to understand how an integrated intervention, that implies a structural and energy retrofit, as well as a spatial redistribution, leads to an improvement of the Indoor Environmental Quality (IEQ). In detail, the structural retrofit was performed through exoskeleton that leads to the addition of new living spaces and to a remodeling of the building facades. The energy retrofit regarded all three levers of energy efficiency, and thus the building envelope, the microclimatic control systems, and the systems from renewable sources. The integrated intervention, in addition to a reduction of energy demand, has led to advantages in terms of IEQ. Thermal comfort, both during summer and winter, is improved and the hours of suitable CO2 concentration pass from 34% in the pre-retrofit stage up to 100% in the post retrofit stage.
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Almhafdy, Abdulbasit, Norhati Ibrahim, and Sabarinah Sh Ahmad. "Impacts of Courtyard Geometrical Configurations on Energy Performance of Buildings." Environment-Behaviour Proceedings Journal 4, no. 10 (March 1, 2019): 29. http://dx.doi.org/10.21834/e-bpj.v4i10.1637.
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The courtyard is an architectural design element often regarded as microclimate modifiers. It has the potential of improving comfort conditions within the outdoor courtyard space and the enclosing indoor spaces. Harnessing the optimum benefits of courtyards depends on several conditions namely the orientation and configurations of the courtyards, as well as the treatment of the external surfaces of the enclosing building envelopes. As three variables of orientation, number of floors and wall envelope have not been investigated in a single study, therefore, this parametric study was performed to investigate the microclimatic influence of varying courtyard geometric configurations and its enclosing facades in hot and humid climate using IES<VE> simulation tools. The study observed the environmental impact regarding thermal performance and energy consumption of the enclosing indoor spaces. The results suggest optimum conditions to harness the potential of courtyards to lower energy consumption of buildings in the tropics.Keywords: courtyard; thermal performance; energy consumption; simulationeISSN: 2398-4287 © 2019. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.DOI: https://doi.org/10.21834/e-bpj.v4i10.1637
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Dudzińska, Anna, and Tomasz Kisilewicz. "Alternative Ways of Cooling a Passive School Building in Order to Maintain Thermal Comfort in Summer." Energies 14, no. 1 (December 25, 2020): 70. http://dx.doi.org/10.3390/en14010070.
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The heatwaves that have affected our civilization in recent years pose a serious threat to the environment as well as the proper functioning of our bodies. Schools are facilities with specific microclimatic requirements. Thermal conditions in educational buildings are decisive for the stimulation and efficiency of the learning process, as well as the interaction of students. Based on the measurements of thermal comfort carried out in the school building, with the energy standard of a passive building, it can be observed that in schools with very low energy consumption, the problem of interior overheating may occur in the summer months. In this paper, an attempt was made to search for alternative passive measures allowing for the required indoor microclimate conditions to be obtained. Such solutions are in line with the spirit of the European energy policy and sustainable development. A model of the school under study was created using the Design Builder simulation program. The role of mechanical ventilation and the possibility of night ventilation in reducing discomfort were examined. Consideration was given to the justification of using expensive heat pump installations with a ground heat exchanger to reduce overheating in summer. The application of the adaptive approach to the assessment of thermal conditions and the acceptance of limited overheating periods led to the conclusion that the analyzed building could function successfully without these additional installation elements. A proprietary tool for the analysis of microclimate conditions was proposed to estimate the hours of discomfort in a way that is objective and easy to calculate.
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Yu, Guoqing, Zhaoji Gu, Zhenye Yan, and Hengtao Chen. "Investigation and comparison on thermal comfort and energy consumption of four personalized seat heating systems based on heated floor panels." Indoor and Built Environment, July 17, 2020, 1420326X2093914. http://dx.doi.org/10.1177/1420326x20939145.
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The climate of Yangtze River Basin in China is cold and humid in winter. Conventional air-conditioning systems may cause high energy consumption and uncomfortable microclimatic conditions especially for lower body of indoor occupants. This study investigated four personalized seat heating systems, in a typical office room in Shanghai during winter, based on heated floor panels including heated floor panels + ordinary chair (HF-OC), heated floor panels + insulated chair (HF-IC), heated floor panels +insulated chair and leg box (HF-IC-LB) and overall personalized heating (OPH). The surface temperature of walls and heated floor panels, and the indoor air temperature at different positions were recorded with thermocouples. The hourly energy consumptions of the proposed personalized seat heating systems were measured and compared with a conventional split type air conditioner. Questionnaires of thermal sensation and comfort were carried out among 10 university students. Compared with HF-OC, HF-IC could improve the thermal comfort to a certain extent, while HF-IC-LB provided the optimal thermal micro-environment for the lower body other than other body parts. The OPH systems were proven effective to provide satisfactory thermal environment for all body parts at lower indoor temperature (12–16°C) with much less energy consumption than room air conditioners.
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Gaponenkov, Ivan, and Irina Smirnova. "Concept of Microclimate in Russian Legislation." KnE Life Sciences, January 15, 2020. http://dx.doi.org/10.18502/kls.v5i1.6099.
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In the constantly changing conditions of the external environment, the microclimate is supported by the stabilizing systems of the building in the overall system ”building - exterior fences and engineering equipment”. To create a comfortable microclimate in the room, special systems are used: heating, ventilation, and humidification. To create thermal comfort indoors means ensuring its complex meteorological conditions in which the thermoregulatory system of the body is in a state of the least tension, and all the other physiological functions occur at the level most beneficial for the body. In the modern world the quality of the indoor environment is a priority, part of the requirements is reflected in the modern standards of green building, part in the national standards. So the Russian Federation has legislative and normative-legal acts, reflecting the characteristics of environmental quality: GOST (State Standard) 30494-2011, SanPiN (Sanitary Regulations and Norms) 2.1.2.1002-00, GOST R ISO (Russian National Standard) 7730-2009, SN 2605-82, SNiP (Construction Standards and Regulations) 23-05-95 and others. Normalized microclimatic indicators include temperature, humidity and air velocity, surface temperature of building envelopes, objects, equipment. But at the present stage, the formation of a harmonized and safe environment of the room depends on many factors, which should not only reflect functional, social, climatic, urban planning, construction design, architectural-artistic and economic characteristics, but also socio-psychological and environmental components of the room.
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Gunasagaran, Sujatavani, E. Sean Saw, TamilSalvi Mari, Sucharita Srirangam, and Veronica Ng. "Courtyard configuration to optimize shading, daylight and ventilation in a tropical terrace house using simulation." Archnet-IJAR: International Journal of Architectural Research, June 17, 2022. http://dx.doi.org/10.1108/arch-12-2021-0354.
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PurposeThis study aims to identify the optimal configuration to enhance the environmental conditions of a terrace house courtyard space in a hot and humid climate. The use of the courtyard has declined in new housing developments although it is an effective element to bring in light and wind to promote passive ventilation to occupants. To achieve the comfort level, the courtyard needs to be open, but some occupants modify it with enclosures, such as polycarbonate, to increase the useable and shaded area. This affects bringing in daylight but deters the passive ventilation from happening. Thus, this research is important to create a courtyard that brings in daylight and wind as well as shades from the harsh sun of the tropics and to educate the occupants on the role of the courtyard as a passive ventilation system.Design/methodology/approachThe research method employed is a simulation study. A terrace house with a courtyard design in Penang was chosen as a case study of the baseline model. The courtyard configurations of the case study were evaluated, and 4 settings based on the literature review were established for simulation. The effects of the courtyard configurations were tested through daylight and CFD simulations. Daylight and ventilation requirements from Malaysia Standard were used to evaluate and compare the effectiveness of the proposed settings.FindingsThe results suggested that the semi-enclosed courtyard feature with a shading device could provide the optimal environmental conditions of the courtyard space in a terrace house in a hot-humid climate. This paper will benefit the architectural community in which it is intended to implement courtyard design in modern terrace houses and will also contribute to the discovery of the most suitable courtyard typology in a hot-humid climate.Research limitations/implicationsThe study does not include studies on thermal comfort, energy performance, or use behavior of occupants in this courtyard. The study only focuses on the influence of different courtyard configurations in improving the courtyard space's daylight availability and indoor air movement.Practical implicationsThe data from this study reveal that alteration of courtyard design needs to suit comfort level that should not alter the functions of the courtyard as a passive design. The simulation method offers data for microclimatic conditions according to the changes in design. This study attempts to design influence on multiple parameters of shading, daylighting and ventilation to optimize the use of tropical climatic conditions.Social implicationsThe terrace house with courtyard would create a passive design strategy that would naturally ventilate, provide daylight, and will save on energy usage. The courtyard then with its enhanced comfort for the user will be able to function as a useable space to foster family relationships.Originality/valueThe study on courtyard design using the simulation method mostly have been conducted using a single parameter. This study highlights the analysis and process of identifying the optimal configuration for the architectural feature of a courtyard to provide a comfort level for occupants in hot and humid climates using the simulation method using data from two pieces of software.