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Artykuły w czasopismach na temat „Solar heating”

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Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 29 lipca 2024

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1

Bedych, T. V. "MOBILE PREMISES HEATING SYSTEM". Eurasian Physical Technical Journal 18, nr 3 (37) (24.09.2021): 60–64. http://dx.doi.org/10.31489/2021no3/60-64.

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In production and in everyday life, various heating systems are used. Alternative heating methods have also been used in recent years. One of the sources for the heating system is the Sun. The use of solar energy is of great importance for objects cut off from centralized heat and power supply systems: small villages and auls, farm formations, distant pasture breeding, mobile houses. Heating from the sun, created on the basis of solar panels, is carried out by installing an electric heater. Currently, more and more attention of consumers is drawn to the electrically conductive carbon-based fuel material (carbon). The aim of the study was to study the use of an alternative energy source in the form of solar radiation and carbon thermal flexible material as a heater for heating mobile living quarters of farmers. To carry out the research, a solar station and a heater with a carbon fiber heat-emitting flexible material were installed on the farmer's mobile house. Studies have shown that the proposed system is efficient and in comparison with other systems, such as solar collectors, the system has a number of advantages.

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2

Langniss, Ole, i David Ince. "Solar water heating". Refocus 5, nr 3 (maj 2004): 18–21. http://dx.doi.org/10.1016/s1471-0846(04)00137-4.

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3

Duffie, J. A. "Passive solar heating". Solar Energy 35, nr 2 (1985): 209. http://dx.doi.org/10.1016/0038-092x(85)90015-5.

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4

Mousa, Hasan, M. Abu-Arabi, M. Al-Naerat, R. Al-Bakkar, Y. Ammera i A. Khattab. "Solar Desalination Indirect Heating". International Journal of Sustainable Water and Environmental Systems 1, nr 1 (15.09.2010): 29–32. http://dx.doi.org/10.5383/swes.0101.007.

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5

Molotkov, I. A., i N. A. Ryabova. "Solar corona top heating". Geomagnetism and Aeronomy 56, nr 3 (maj 2016): 264–67. http://dx.doi.org/10.1134/s0016793216030130.

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6

Woods, L. C. "Heating the Solar Corona". Highlights of Astronomy 13 (2005): 124. http://dx.doi.org/10.1017/s1539299600015276.

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A typical temperature for the quiet solar corona is ~ 1.5 x 106K, whereas the photosphere – the likely source of the thermal energy – has a temperature less than 6 × 103 K. Although many theories have been advanced to explain why the corona is so much hotter than the photosphere, this old problem remains unsolved. However, there is a mechanism based on second-order transport that may provide the answer, or at least part of the answer. This process, described by the author in Thermodynamic inequalities in gases and magnetoplasmas, John Wiley & Sons Ltd, 1996, causes heat to be transported across strong magnetic fields up temperature gradients.

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7

Davidson, Jane H., i Stephen Harrison. "Solar heating and cooling". Solar Energy 104 (czerwiec 2014): 1. http://dx.doi.org/10.1016/j.solener.2014.01.035.

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8

Grahovac, Milica, Katie Coughlin, Hannes Gerhart i Robert Hosbach. "Multiscale Solar Water Heating". Journal of Open Source Software 5, nr 56 (14.12.2020): 2695. http://dx.doi.org/10.21105/joss.02695.

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9

Parker, E. N. "Heating solar coronal holes". Astrophysical Journal 372 (maj 1991): 719. http://dx.doi.org/10.1086/170015.

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10

Chang, Keh-Chin, Wei-Min Lin, Tsong-Sheng Lee i Kung-Ming Chung. "Solar Heating in Taiwan". Energy Procedia 57 (2014): 834–39. http://dx.doi.org/10.1016/j.egypro.2014.10.292.

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11

Wu, Shao-Hua, i Michelle L. Povinelli. "Solar heating of GaAs nanowire solar cells". Optics Express 23, nr 24 (25.09.2015): A1363. http://dx.doi.org/10.1364/oe.23.0a1363.

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12

Han, Haijun, Hongyan Zhou, Ouyang Dong i Junjie Ma. "Experimental Study on Phase Change Material with Solar Heater System for Building Heating". Coatings 12, nr 10 (5.10.2022): 1476. http://dx.doi.org/10.3390/coatings12101476.

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An integrated solar heating system with a new type of phase change material (PCM), solar collectors and test building were developed. The exothermal and endothermal behaviors of the PCM were determined, and the stability and comfort of the solar heating system were researched. The integrated solar heating system was operated on the test building heating for one heating period, and the temperature of heating rooms, the outdoors, and the contrast rooms were recorded and collected by a data acquisition system. The collected temperature data indicated that the integrated solar heating system with PCM could produce heating stability and continuity; the average temperature of the heating rooms using PCM was 4.6 °C higher than the contrast rooms, which did not use PCM. Taking 16 °C as the lowest standard room temperature, the integrated solar heating system could save approximately 45% of energy during one heating period. The successful development of an integrated solar heating system, coupled with phase change materials and solar collectors for building heating will lay a solid foundation for achieving the goals of building energy conservation and “carbon peaking and carbon neutrality”.

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13

Pant, Gunjan, Chandan Swaroop Meena i Veena Choudhary. "Review on Solar Assisted Heat Pump Water Heating System". International Journal of Energy Resources Applications 1, nr 2 (30.12.2022): 58–84. http://dx.doi.org/10.56896/ijera.2022.1.2.011.

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14

Cai, Zhi Duan, Wu Ming He, Pei Liang Wang i Shou Jiang Cai. "Pre-Heating Storage Design of Solar Heating System Based on SVM". Advanced Materials Research 320 (sierpień 2011): 548–52. http://dx.doi.org/10.4028/www.scientific.net/amr.320.548.

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The heating model of pre-heating storage in advance during the valley period of electricity is proposed to solve the intermittent heating problem brought by large solar heating systems affected by change in climate and day and night or other factors. Aiming at best energy saving and the capability of continues heating of solar heating system, the SVM is applied to predict the start time, the highest temperature, the volume of water and other key parameters of the model. The solar heating system apply the pre-heating storage control model that has been trained to meet the practical requirements of different consumers and climate in the application process. Experimental results show that the pre-heating storage model can improve the energy efficiency of large solar heating system and the capacity of real-time continuous heating. The article provides a new control model with large-scale solar heating system.

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15

Truong, Nguyen Le, i Leif Gustavsson. "Solar Heating Systems in Renewable-based District Heating". Energy Procedia 61 (2014): 1460–63. http://dx.doi.org/10.1016/j.egypro.2014.12.147.

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16

Niederhäuser, Elena-Lavinia, Matthias Rouge, Antoine Delley, Harold Brülhart i Christian Tinguely. "New Innovative Solar Heating System (Cooling/Heating) Production". Energy Procedia 70 (maj 2015): 293–99. http://dx.doi.org/10.1016/j.egypro.2015.02.126.

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17

Norhafana, M., Ahmad Faris Ismail i Z. A. A. Majid. "PERFORMANCE EVALUATION OF SOLAR COLLECTORS USING A SOLAR SIMULATOR". IIUM Engineering Journal 16, nr 2 (30.11.2015): 79–90. http://dx.doi.org/10.31436/iiumej.v16i2.606.

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Solar water heating systems is one of the applications of solar energy. One of the components of a solar water heating system is a solar collector that consists of an absorber. The performance of the solar water heating system depends on the absorber in the solar collector. In countries with unsuitable weather conditions, the indoor testing of solar collectors with the use of a solar simulator is preferred. Thus, this study is conducted to use a multilayered absorber in the solar collector of a solar water heating system as well as to evaluate the performance of the solar collector in terms of useful heat of the multilayered absorber using the multidirectional ability of a solar simulator at several values of solar radiation. It is operated at three variables of solar radiation of 400 W/m2, 550 W/m2 and 700 W/m2 and using three different positions of angles at 0Âº, 45Âº and 90Âº. The results show that the multilayer absorber in the solar collector is only able to best adapt at 45Â° of solar simulator with different values of radiation intensity. At this angle the maximum values of useful heat and temperature difference are achieved.Â KEYWORDS: solar water heating system; solar collector; multilayered absorber; solar simulator; solar radiationÂ

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18

Liu, Yanfeng, Deze Hu, Xi Luo i Ting Mu. "Design Optimization of Centralized–Decentralized Hybrid Solar Heating System Based on Building Clustering". Energies 15, nr 3 (29.01.2022): 1019. http://dx.doi.org/10.3390/en15031019.

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Clean heating has not been widely applied in rural Chinese areas. Considering the abundance of solar energy resources, harvesting solar energy for heating can be an effective solution to the problem of space heating in most rural areas. As the disperse building distribution in rural areas makes it difficult to implement centralized heating on a large scale, deploying centralized–decentralized hybrid solar heating system can achieve the best result from both the technical and economic perspectives. Taking a virtual village in Tibet as an example, this paper explores how to obtain optimal design of centralized–decentralized hybrid solar heating system based on building clustering. The results show that: (1) Compared with the fully centralized system and fully decentralized system, the centralized–decentralized hybrid solar heating system in the studied case could achieve a life cycle cost (LCC) saving of 4.8% and 2.3%, respectively; (2) The LCC of centralized–decentralized hybrid solar heating system basically decreases when the cost of the heating pipelines in the whole region decreases, but the emergence of single-household solar heating system may greatly increase the operating cost; (3) The necessity of designing a centralized–decentralized hybrid solar heating system can be determined by the pipeline price and building density, but the threshold values of pipeline price and building density are highly case-specific.

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19

Wu, Xuan, Jingkang Liang, Haoyi Yao i Yunfeng Wang. "A Review of Solar Energy Use in Biogas Digester Heating". Journal of Solar Energy Research Updates 9 (30.10.2022): 70–81. http://dx.doi.org/10.31875/2410-2199.2022.09.07.

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Abstract: Several factors affect biogas fermentation, among which the temperature fluctuation is crucial. Domestic and foreign biogas fermentation heating systems are also diverse. Among various exist methods of heating biogas fermentation, solar biogas fermentation heating systems are also diverse. The current study reviewed various solar-heating biogas fermentation systems at home and abroad, describing the principle of the solar-heating system, the collector, the heat storage material and the research and application progress. It briefly discussed its characteristics, summarising the critical technology of solar biogas heating systems.

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20

Liu, Zhan Feng, Yuan Su i Pei Zhang. "Study on Simulation for Solar Heating System for Biogas". Advanced Materials Research 383-390 (listopad 2011): 3499–504. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3499.

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The anaerobic methane fermentation is sensitive to temperature, the higher the temperature, the more vigorous microbial activity, higher gas production. Therefore, the temperature is the main factor of methane fermentation. Northern regions due to low temperatures, biogas will be difficult to operate on their own, the need for digester heating. Solar heating is a heating system, biogas fermentation method. Effect of solar heating on the methane fermentation is one of the hotspots in this field. Using MATLAB to provide dynamic system modeling and simulation package Simulink, solar heating methane fermentation system model and algorithm, select the appropriate module on the biogas fermentation solar heating simulation, the method for solar heating in north China to provide a methane fermentation system some new ideas.

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21

Liang, Ruo Bing, Ji Li Zhang, Liang Dong Ma, Liang Zhao i Sheng Qiang Shen. "Design of Solar Heating and Cooling System in Cold Areas of China Based on TRNSYS". Applied Mechanics and Materials 209-211 (październik 2012): 1778–82. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.1778.

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The solar heating and cooling system simulation platform has been established based on Trnsys in this paper. Taken the villa building in cold areas of China as research objects, the solar heating and cooling system with different solar energy resources division have been analyzed. System optimization designs have been proposed and the optimum storage tank volume and solar fraction of the solar heating and cooling system have been given. The results show that the solar irradiation is one of the most influence factors in solar heating and cooling system for storage tank volume and solar fraction. The higher solar irradiation can be acquired, the larger volume of storage tank and solar fraction.

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22

Zhao, Juan, Yifei Bai, Junmei Gao, Tianwei Qiang i Pei Liang. "Smart Evaluation Index of Roof SHS Suitability". Energies 15, nr 3 (4.02.2022): 1164. http://dx.doi.org/10.3390/en15031164.

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The instability of solar energy and its resource distribution characteristics make it difficult to judge its suitability in practical engineering applications, which hinders its promotion and application. In order to better promote the effective use of solar energy and promote the solar heating system, it is necessary to put forward a simple method of judging the suitability of the solar heating system for engineering application. This study puts forward “F, Q” as the basis for judging the suitability of solar heating systems built on the roof. Two types of public buildings, office buildings and three-star hotels, are taken as the research objects. DeST software is used to change the heating area of the building by superimposing floors to simulate the heat load of the building when the heating area changes. A dynamic simulation coupling model of solar heating system is established in the TRNSYS software to analyze the operating status of the system under all working conditions. The functional relationship between “F, Q” and solar energy guarantee rate is established, and the solar energy contribution rate is divided into three regions of F < 30%, 30% ≤ F ≤ 50%, and F > 50%. The evaluation standard of the building suitability of the solar energy heating system is established according to the scope of “F, Q” in different regions (An office building for, e.g., if the contribution rate of solar heating system is required to be greater than 50%, the “F” of these four areas should be greater than 0.11388, 0.15543, 0.10572, and 0.04511.), and the effectiveness of “F” is verified through actual cases verified by other scholars in the research. The method proposed in this paper is helpful to judge the suitability of solar heating systems in different regions and different types of conventional buildings, so as to better promote solar heating systems.

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23

Русу, О. П., Д. О. Гай i А. Ю. Устенко. "ВИКОРИСТАННЯ СОНЯЧНИХ КОЛЕКТОРІВ У СИСТЕМАХ ОБІГРІВУ ПРИМІЩЕНЬ". Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 124, nr 4 (2.11.2018): 26–33. http://dx.doi.org/10.30857/1813-6796.2018.4.3.

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Determination the easiest ways to use solar collectors for building heating. Analysis of existing technical solutions for the use of solar collectors for building heating by the criterion of simple integration into existing engineering systems of buildings. Two ways of using solar collectors for building heating making easy to integrate into existing engineering systems of buildings are proposed. The use of solar air collectors for building heating both as autonomous devices and as part of integrated heating and ventilation systems is substantiated. The integration of solar collectors into existing air conditioning systems using Freon as a coolant, which will increase their efficiency during the heating season, is substantiated. The proposed methods of using solar collectors can be the basis for the development of new devices and systems for building heating, which can reduce the quantity of organic fuels and the level of environmental pressure on the environment.

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24

Kou, Guang Xiao, Ling Ling Cai, Yong Jun Ye, Rong Rong Lu i Pei Na Shang. "Case Analysis of the Solar Heating System Assisted by Condensing Wall-Mounted Gas Heater". Applied Mechanics and Materials 672-674 (październik 2014): 7–12. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.7.

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Taking household heating for an example, this paper has introduced the composition and characteristics of combined heating system with condensing wall-mounted boiler and solar water heater; and through the simple contrastive analysis of the economy and environmental protection with the solar heating system assisted by electric heating and wall-mounted gas heater, it is believed that the heating system combined with condensing gas heater and solar heating is the better choice of household heating considering its energy saving, economy and environmental protection.

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25

Liu, Panxue, Jianhui Zhao i Jiamei Chen. "Simulation Study of a Novel Solar Air-Source Heat Pump Heating System Based on Phase-Change Heat Storage". Sustainability 15, nr 22 (7.11.2023): 15684. http://dx.doi.org/10.3390/su152215684.

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A traditional solar air-source heat pump heating system cannot effectively utilize solar energy, and it consumes large amounts of energy when operating during cold nights. Accordingly, a conventional heating system has been improved by phase-change heating to form a new phase-change thermal storage solar air-source heat pump heating system. Based on the TRNSYS simulation platform, a heating simulation study of the improved phase-change heating system was carried out in Xi’an City. The results show that the addition of phase-change thermal storage technology allows the heating system to make better use of solar energy, and the efficiency of the solar collector is increased by 5.9%; the presence of the phase-change material effectively reduces the rate of temperature drop inside the water tank, making the water supply temperature more stable; during the whole heating period, the improved phase-change heating system saved 484.91 kWh of operating energy, showing a very good energy-saving effect.

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26

Matsuyama, Isamu N., Teresa Steinke i Francis Nimmo. "Tidal Heating in Io". Elements 18, nr 6 (1.12.2022): 374–78. http://dx.doi.org/10.2138/gselements.18.6.374.

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Io experiences strong, periodic, gravitational tides from Jupiter because of its close distance to the planet and its elliptic orbit. This generates internal friction that heats the interior, a naturally occurring process in the Solar System and beyond. Io is unique in our Solar System because it gets most of its internal energy from this tidal heating, providing an ideal laboratory for improving our understanding of this fundamental process that plays a key role in the thermal and orbital evolution of the Moon, satellites in the outer Solar System, and extrasolar planets.

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27

Kadhim, Karrar Hameed, i Dr Boris Lukutin. "Mathematical Modeling of Solar Heating System for an Aluminum Factory". Journal of Advanced Research in Dynamical and Control Systems 11, nr 11 (20.11.2019): 198–205. http://dx.doi.org/10.5373/jardcs/v11i11/20193188.

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28

Voznyak, Orest, Mariana Kasynets, Khrystyna Kozak, Iryna Sukholova i Oleksandr Dovbush. "THERMAL MODERNIZATION OF HEATING SYSTEM BY USING THE SOLAR ROOF". Theory and Building Practice 2020, nr 1 (15.06.2020): 51–56. http://dx.doi.org/10.23939/jtbp2020.01.051.

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29

Dai, Yuan De, i Na Yu. "Experimental Study on Solar Assisted Heat-Pump Water Heating System". Applied Mechanics and Materials 178-181 (maj 2012): 151–54. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.151.

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Solar assisted heat-pump water heating system combines the advantages of Solar Utilization Technology and heat pump water heating technology, it is a new water heating system with energy conservation and environmental protection. Under the premise of putting up experimental system, some performance parameters have been tested, such as the heating rate, the heat collecting efficiency of the system and the influence of indoor air temperature on the outlet water temperature and the energy efficiency ratio of the water heating system. The experimental results show that solar assisted heat-pump water heating system has the advantages of high energy efficiency ratio, shorter consuming time than traditional solar water heating system when heating water, and it can be concluded that this new water heating system should be applied in the future.

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30

Thring, James B. "Solar heating and the environment". International Journal of Ambient Energy 12, nr 3 (lipiec 1991): 115–20. http://dx.doi.org/10.1080/01430750.1991.9675536.

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31

von Zabeltitz, C. "Greenhouse heating with solar energy". Energy in Agriculture 5, nr 2 (lipiec 1986): 111–20. http://dx.doi.org/10.1016/0167-5826(86)90012-4.

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32

Hollweg, Joseph V. "Heating of the solar corona". Computer Physics Reports 12, nr 4 (maj 1990): 205–32. http://dx.doi.org/10.1016/0167-7977(90)90011-t.

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33

Kramer, Korbinian S., Christoph Thoma, Stefan Mehnert i Sven Fahr. "Testing Solar Air-heating Collectors". Energy Procedia 48 (2014): 137–44. http://dx.doi.org/10.1016/j.egypro.2014.02.017.

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34

Browning, P. K. "Mechanisms of solar coronal heating". Plasma Physics and Controlled Fusion 33, nr 6 (1.06.1991): 539–71. http://dx.doi.org/10.1088/0741-3335/33/6/001.

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35

Erdelyi, Robert. "Heating in the solar atmosphere". Astronomy and Geophysics 45, nr 4 (sierpień 2004): 4.34–4.37. http://dx.doi.org/10.1046/j.1468-4004.2003.45434.x.

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36

Habali, S. M., M. A. S. Hamdin, B. A. Jubran i Adnan I. O. Zaid. "Strategies for solar heating systems". Solar & Wind Technology 5, nr 1 (styczeń 1988): 83–91. http://dx.doi.org/10.1016/0741-983x(88)90092-6.

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FLOUQUET, FRANÇOISE, i JÉRÔME ADNOT. "DESIGN AND PERFORMANCE OF AN ORIGINAL FRENCH SOLAR HEATING SYSTEM: DIRECT SOLAR FLOOR HEATING". International Journal of Solar Energy 8, nr 4 (styczeń 1990): 177–85. http://dx.doi.org/10.1080/01425919008909721.

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38

Abdel-Baky, Mostafa, Eldesouki Eid i Ibrahim El-Khaldy. "Investigation of Natural Heating of buildings by Solar Chimney at Various Solar Heating Cases". Industrial Technology Journal 1, nr 1 (1.10.2023): 76–96. http://dx.doi.org/10.21608/itj.2023.242865.1009.

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39

Zhang, Bo Yang, Ya Hui Xie i Shun Xiang Sun. "Applied Research of Solar Water Heater Integrated with Modern Architecture". Advanced Materials Research 756-759 (wrzesień 2013): 4492–96. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.4492.

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This paper describes the application forms of building integrated with solar energy. We explain a solar water heating system; its solar collectors and water storage tanks are placed together. We discuss another solar water heating system, its solar collectors are placed together but its water storage tanks are placed in every resident's home. This paper also introduces the wall-hung SWH and the application of solar refrigeration and solar heating. At last we analyze the problems of the development of solar water heater integrated with modern architecture.

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40

Kellogg, P. J., F. S. Mozer, M. Moncuquet, D. M. Malaspina, J. Halekas, S. D. Bale i K. Goetz. "Heating and Acceleration of the Solar Wind by Ion Acoustic Waves—Parker Solar Probe". Astrophysical Journal 964, nr 1 (1.03.2024): 68. http://dx.doi.org/10.3847/1538-4357/ad029f.

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Abstract The heating of the solar wind has been shown to be correlated with certain ion acoustic waves. Here calculations of the heating are made, using the methods used previously for STEREO observations, which show that the strong damping of ion acoustic waves rapidly delivers their energy to the plasma of the solar wind. It is shown that heating by the observed waves is not only sufficient to produce the observed heating but can also provide much or all of the outward acceleration of the solar wind.

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41

Guan, Zhen Zhong, Chong Jie Wang i Yi Bing Xue. "The Application of Solar District Heating and Water Heating Integrated System in Residential Quarter". Advanced Materials Research 935 (maj 2014): 97–101. http://dx.doi.org/10.4028/www.scientific.net/amr.935.97.

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A solar district heating and water heating integrated system has been designed and installed in a 5000m2 residential quarter. The integrated system uses vacuum glass tube solar collector to collect solar radiation energy, and uses water as heat medium. Solar energy provides almost 50% of the total heating energy consumption in winter. The inadequate part of energy can be provided by a steam heater which steam is provided by exhaust steam of the turbine from a power station nearby. The integrated system is operating automatically according to the solar radiation and working condition. Low-temperature floor radiation system is used as indoor heat radiator. At the same time, the system can provide 24h hot water supply. The integrated system has operated for 3 years, saves a large amount of energy, and receives good profit in both economical and environment.

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42

Wang, Xue Ying, Dong Xu i Ya Jun Wu. "Analysis about Solar Water Heating System and Residential Building Integrated Design". Applied Mechanics and Materials 193-194 (sierpień 2012): 13–16. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.13.

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The solar energy is a free from contamination of green energy, the application of solar energy in building is booming in recent years. Solar water heating system in the building and the organic combination are also getting forward. In order to meet the people of high quality life pursuit, more and more housing are designed with solar water heating system. The paper expounds the necessity and importance about solar water heating system integration and illustrates that residential building solar hot water system of building integrated principle, emphasize we should use the life cycle of the technology economic evaluation methods to speed up the establishment residential building solar water heating system and building integrated evaluation system.

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Yoo, Mooyoung. "Optimal Design and Parameter Estimation for Small Solar Heating and Cooling Systems". Sustainability 15, nr 23 (27.11.2023): 16352. http://dx.doi.org/10.3390/su152316352.

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The use of solar heating and cooling systems has evolved from being limited to heating and hot water systems in the past to an increasing application in cooling systems. Furthermore, the efficiency optimization of solar heating and cooling systems is crucial in their design and control. This study aimed to enhance the overall efficiency of a solar heating and cooling system through simulations based on optimal design parameters. Additionally, simulations were conducted to optimize the control system to improve the efficiency of the entire solar heating and cooling system. The framework for control optimization can be summarized as follows: (1) modeling the components of the solar heating and cooling system using the Modelica language; (2) establishing baseline efficiencies for the solar heating and cooling system throughout the year; and (3) implementing a control logic, such as Fuzzy or proportional-integral-derivative (PID), within the system components. The resulting optimal control strategy for the solar heating and cooling system led to a maximum increase in the overall system efficiency of approximately 12% during a week of summer design days, reducing the energy consumption from 696.89 kWh to 556.12 kWh. This demonstrates that the developed parameters and control logic improved the overall system performance and achieved efficiency optimization.

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Fanney, A. H., i B. P. Dougherty. "A Photovoltaic Solar Water Heating System". Journal of Solar Energy Engineering 119, nr 2 (1.05.1997): 126–33. http://dx.doi.org/10.1115/1.2887891.

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A novel solar water heating system was patented in 1994. This system uses photovoltaic cells to generate electrical energy that is subsequently dissipated in multiple electric resistive heating elements. A microprocessor controller continually selects the appropriate heating elements such that the resistive load causes the photovoltaic array to operate at or near maximum power. Unlike other residential photovoltaic systems, the photovoltaic solar water heating system does not require an inverter to convert the direct current supplied by the photovoltaic array to an alternating current or a battery system for storage. It uses the direct current supplied by the photovoltaic array and the inherent storage capabilities of a residential water heater. A photovoltaic solar hot water system eliminates the components most often associated with the failures of solar thermal hot water systems. Although currently more expensive than a solar thermal hot water system, the continued decline of photovoltaic cell prices is likely to make this system competitive with solar thermal hot water systems within the next decade. This paper describes the system, discusses the advantages and disadvantages relative to solar thermal water heating systems, reviews the various control strategies which have been considered, and presents experimental results for two full-scale prototype systems.

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Kalder, Janar, Andres Annuk, Alo Allik i Eugen Kokin. "Increasing Solar Energy Usage for Dwelling Heating, Using Solar Collectors and Medium Sized Vacuum Insulated Storage Tank". Energies 11, nr 7 (12.07.2018): 1832. http://dx.doi.org/10.3390/en11071832.

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This article describes a method for increasing the solar heat energy share in the heating of a dwelling. Solar irradiation is high in summer, in early autumn, and in spring, but during that same time, the heat demand of dwellings is low. This article describes a solution for storing solar heat energy in summertime as well as the calculations of the heat energy balance of such a storage system. The solar heat energy is stored in a thermally insulated water tank and used in the heating period. The heat is also stored in the ground if necessary, using the ground loop of the heat pump if the water tank’s temperature rises above a certain threshold. The stored heat energy is used directly for heating if the heat carrier temperature inside the tank is sufficient. If the temperature is too low for direct heating, then the heat pump can be used to extract the stored energy. The calculations are based on the solar irradiation measurements and heating demand data of a sample dwelling. The seasonal storing of solar heat energy can increase the solar heat energy usage and decrease the heat pump working time. The long-term storage tank capacity of 15 m3 can increase the direct heating from solar by 41%. The direct heating system efficiency is 51%.

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Wang, Xiu Shan, Zhi Ling Xu, Jiang Yuan i Tao Tao Fan. "Study on the Method of Heating Asphalt with Solar Energy". Advanced Materials Research 1089 (styczeń 2015): 369–72. http://dx.doi.org/10.4028/www.scientific.net/amr.1089.369.

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The color of the asphalt is close to black, it has the good ability of absorbing the solar energy. Road asphalt are solid or half a solid state at normal temperature, it must be reduced the asphalt viscosity to a certain range before used it. The main method of reducing the viscosity of asphalt is heating it. Because of the high temperature of the construction of asphalt, the traditional method on the asphalt heating is electrical heating which needs to consume large amounts of energy. Solar energy is huge and clean energy, which can save large of energy on the asphalt heating. This paper expounds on the solar heating principle, as well as designs the solar heating device to research the energy-saving method on the heating of road asphalt.

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Abdalla, Nidal. "Validated TRNSYS Model for Solar Assisted Space Heating Systems". Solar Energy and Sustainable Development Journal 3, nr 1 (31.12.2014): 28–37. http://dx.doi.org/10.51646/jsesd.v3i1.86.

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The present study involves a validated TRNSYS model for solar assisted space heating system as applied to a residential building in Jordan using new detailed radiation models of the TRNSYS 17.1 and geometric building model Trnsys3d for the Google SketchUp™ 3D drawing program. The annual heating load for a building (Solar House) which is located at the Royal Scientific Society (RSS) in Jordan is estimated under climatological conditions of Amman. The aim of this paper is to compare the measured thermal performance of the Solar House with that modeled using TRNSYS. The results showed that the annual measured space heating load for the building was 6,188 kWh while the heating load for the modeled building was 6,391 kWh. Moreover, the measured solar fraction for the solar system was 50% while the modeled solar fraction was 55%. A comparison of modeled and measured data resulted in percentage mean absolute errors for solar energy for space heating, auxiliary heating, and a solar fraction of 13%, 7%, and 10%, respectively. T e validated model will be useful for long-term performance simulation under different weather and operating conditions.

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Klevets, Ksenia, Alexander Dvoretsky i Alexander Spiridonov. "Eco-efficiency of passive solar heating". E3S Web of Conferences 138 (2019): 01018. http://dx.doi.org/10.1051/e3sconf/201913801018.

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The article presents calculations of the energy efficiency of direct solar heating and sunspace, located on the building facades of various orientations, in the climatic conditions of the southern coast of Crimea. The share of compensation for heat losses due to passive solar heating has been determined. The calculation of the environmental effect of passive solar heating systems has been done.

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Ma, Kun Ru, Lu Jin i Li Juan Yan. "Feasibility Study about Solar Energy-Air Source Heat Pump System in Cold Region Rural Residential Applications". Applied Mechanics and Materials 672-674 (październik 2014): 113–16. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.113.

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This paper proposes a solar-air compound source heat pump system, for the rural residential area of Hebei and independent villas. The system can realize heating in winter and refrigerating in summer, and demand of heat water. This paper simulates and analyzes the winter heating situation of this system. The entire heating season, heat collecting efficiency of the solar collector is 0.45 in average, and solar guarantee rate is 46%. Solar-air compound source heat pump system average COP is 4.5 in the heating season, increased by 26% than the air source heat pump system run separately , and the fluctuation range is small. Throughout the heating season, the contribution of solar collectors is 59%, the contribution of air source heat pump is 41%.

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Fanney, A. H., B. P. Dougherty i K. P. Kramp. "Field Performance of Photovoltaic Solar Water Heating Systems". Journal of Solar Energy Engineering 119, nr 4 (1.11.1997): 265–72. http://dx.doi.org/10.1115/1.2888031.

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Energy consumed for water heating accounts for approximately 17.9 EJ of the energy consumed by residential and commercial buildings. Although there are over 90 million water heaters currently in use within the United States (Zogg and Barbour, 1996), durability and installation issues as well as initial cost have limited the sales of solar water heaters to less than 1 million units. Durability issues have included freeze and fluid leakage problems, failure of pumps and their associated controllers, the loss of heat transfer fluids under stagnation conditions, and heat exchanger fouling. The installation of solar water heating systems has often proved difficult, requiring roof penetrations for the piping that transports fluid to and from the solar collectors. Fanney and Dougherty have recently proposed and patented a solar water heating system that eliminates the durability and installation problems associated with current solar water heating systems. The system employs photovoltaic modules to generate electrical energy which is dissipated in multiple electric heating elements. A microprocessor controller is used to match the electrical resistance of the load to the operating characteristics of the photovoltaic modules. Although currently more expensive than existing solar hot water systems, photovoltaic solar water heaters offer the promise of being less expensive than solar thermal systems within the next decade. To date, photovoltaic solar water heating systems have been installed at the National Institute of Standards and Technology in Gaithersburg, MD and the Florida Solar Energy Center in Cocoa, FL. This paper will review the technology employed, describe the two photovoltaic solar water heating systems, and present measured performance data.

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