Academic literature on the topic 'Vertical ground heat exchanger'

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Journal articles on the topic "Vertical ground heat exchanger"

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Hu, Ying Ning, Ban Jun Peng, Shan Shan Hu, and Jun Lin. "Experimental Study of Heating-Cooling Combined Ground Source Heat Pump System with Horizontal Ground Heat Exchanger." Advanced Materials Research 374-377 (October 2011): 398–404. http://dx.doi.org/10.4028/www.scientific.net/amr.374-377.398.

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A hot-water and air-conditioning (HWAC) combined ground sourse heat pump(GSHP) system with horizontal ground heat exchanger self-designed and actualized was presented in this paper. The heat transfer performance for the heat exchanger of two different pipe arrangements, three layers and four layers, respectively, was compared. It showed that the heat exchange quantity per pipe length for the pipe arrangement of three layers and four layers are 18.0 W/m and 15.0 W/m. The coefficient of performance (COP) of unit and system could remain 4.8 and 4.2 as GSHP system for heating water, and the COP of
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Basok, Borys, Borys Davydenko, Hanna Koshlak, and Volodymyr Novikov. "Free Convection and Heat Transfer in Porous Ground Massif during Ground Heat Exchanger Operation." Materials 15, no. 14 (2022): 4843. http://dx.doi.org/10.3390/ma15144843.

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Heat pumps are the ideal solution for powering new passive and low-energy buildings, as geothermal resources provide buildings with heat and electricity almost continuously throughout the year. Among geothermal technologies, heat pump systems with vertical well heat exchangers have been recognized as one of the most energy-efficient solutions for space heating and cooling in residential and commercial buildings. A large number of scientific studies have been devoted to the study of heat transfer in and around the ground heat exchanger. The vast majority of them were performed by numerical simu
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Bertagnolio, Stephane, Michel Bernier, and Michaël Kummert. "Comparing vertical ground heat exchanger models." Journal of Building Performance Simulation 5, no. 6 (2012): 369–83. http://dx.doi.org/10.1080/19401493.2011.652175.

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Huang, Xue Ting, Yan Ling Guan, and Chao Jiang. "Research on the Initial Operating Performance of Ground Heat Exchangers." Applied Mechanics and Materials 448-453 (October 2013): 2897–902. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2897.

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Focus on the unfavorable effects of initial operation to the performance of ground heat exchangers, a three-dimensional CFD simulation of full-scale ground heat exchanger under dynamic load was established to investigate the heat transfer performance of a 120-meter vertical U-Tube ground heat exchanger under different initial operating time. The results show that initial operation has influence on the performance of ground heat exchangers.
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Hanuszkiewicz-Drapała, Małgorzata, and Jan Składzień. "Heating system with vapour compressor heat pump and vertical U-tube ground heat exchanger." Archives of Thermodynamics 31, no. 4 (2010): 93–110. http://dx.doi.org/10.2478/v10173-010-0031-8.

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Heating system with vapour compressor heat pump and vertical U-tube ground heat exchangerIn the paper a heating system with a vapour compressor heat pump and vertical U-tube ground heat exchanger for small residential house is considered. A mathematical model of the system: heated object - vapour compressor heat pump - ground heat exchanger is presented shortly. The system investigated is equipped, apart from the heat pump, with the additional conventional source of heat. The processes taking place in the analyzed system are of unsteady character. The model consists of three elements; the firs
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Tarrad, Ali H. "A 3-Dimensional Numerical Thermal Analysis for A Vertical Double U-Tube Ground-Coupled Heat Pump." International Journal of Chemical Engineering and Applications 12, no. 2 (2021): 12–16. http://dx.doi.org/10.18178/ijcea.2021.12.2.789.

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The ground heat exchanger plays a major role in the thermal performance and economic optimization of the ground-coupled heat pump. The present study focuses on the effect of the borehole size and the grout and soil thermal properties on the thermal assessment of these heat exchangers. A double U-tube heat exchanger was studied numerically by the COMSOL Multiphysics 5.4 software in a 3-dimensional discretization model. The double U-tube was circuited as a parallel flow arrangement and situated in a parallel configuration (PFPD) deep in the borehole. The grout and ground thermal conductivities w
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Hu, Ping Fang, Zhong Yi Yu, Fei Lei, Na Zhu, Qi Ming Sun, and Xu Dong Yuan. "Performance Evaluation of a Vertical U-Tube Ground Heat Exchanger Using a Numerical Simulation Approach." Advanced Materials Research 724-725 (August 2013): 909–15. http://dx.doi.org/10.4028/www.scientific.net/amr.724-725.909.

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A vertical U-tube ground heat exchanger can be utilized to exchange heat with the soil in ground source heat pump systems. The outlet temperature of the working fluid through the U-tube not only accounts for heat transfer capacity of a ground heat exchanger, but also greatly affects the operational efficiency of heat pump units, which is an important characteristic parameter of heat transfer process. It is quantified by defining a thermal effectiveness coefficient. The performance evaluation is performed with a three dimensional numerical model using a finite volume technique. A dynamic simula
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Yang, Lian, Yong Hong Huang, and Liu Zhang. "Study on Engineering Construction with Three-Dimensional Heat Transfer Modeling for Double U-Tube Heat Exchangers in Ground-Source Heat Pump Systems." Advanced Materials Research 700 (May 2013): 231–34. http://dx.doi.org/10.4028/www.scientific.net/amr.700.231.

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There are many ground source heat pumps in engineering construction application. However, Research on heat exchanger models of single-hole buried vertical ground source heat pump mostly focuses on single U-tube ground heat exchangers other than double U-tube ones in China currently. Compared with single U-tubes, double U-tubes have the heat transfer particularity of asymmetry. Therefore, the use of the traditional single tube models would have large error in the simulation of the actual double U-tube heat exchangers. This paper frames a three-dimensional heat transfer model for the vertical si
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Sagia, Zoi, Athina Stegou, and Constantinos Rakopoulos. "Borehole Resistance and Heat Conduction Around Vertical Ground Heat Exchangers." Open Chemical Engineering Journal 6, no. 1 (2012): 32–40. http://dx.doi.org/10.2174/1874123101206010032.

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Borehole thermal resistance in Ground Heat Exchanger (GHE) installations is affected by several parameters such as geometrical attributes of heat exchanger in the borehole, pipes' characteristics and grout’s thermal conductivity. A study is carried out to compare the values computed by Ground Loop Design (GLD) Software, GLD 2009, with three ana-lytical solutions for U-shaped tubes. The analysis is focused on dimensionless ratios of borehole geometrical parameters (borehole diameter to outside pipe diameter and shank spacing to borehole diameter) and pipes according to Standard Di-mension Ratio
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Zhang, Dan, Fa Hui Wang, Bo Lei, Yan Ping Yuan, and Xiao Ling Cao. "Study on Heat Transfer Capacity Calculation of Multi-Hole Heat Source for Vertical U-Tube Ground Heat Exchangers." Applied Mechanics and Materials 71-78 (July 2011): 94–99. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.94.

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By studying the features of vertical u-tube ground heat exchangers, with the consideration of the mutual interference between heat exchanger wells on heat transfer, this thesis puts forward the numerical model and calculation method for the heat exchange study of the well group, on the basis of analyzing heat exchange for single well. The paper adopts a nine-well model which is convenient and represents the general patterns of the heat exchange between well groups. The amount of the heat exchange between well groups can be calculated through testing the heat exchange of the single well by mean
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Dissertations / Theses on the topic "Vertical ground heat exchanger"

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Ramanathan, Sriram. "Sensitivity Analysis and Optimization of the Vertical GSHP (Ground source heat pump)." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-171867.

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GSHP (Ground source heat pump), uses geothermal energy which is a form of green and sustainable energy.  Geothermal energy is also a continuous source of energy, unlike wind energy. The results from this thesis work will be applicable for both GSHP that are being used for space heating, and the ones which have a bottom organic Rankine cycle. The bottom organic Rankine cycle and continuous energy production of GSHP make it a potential source for electricity generation.  The GSHP is of various types, in regard to the configuration of the pipe and their setup in the ground and also based on their
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Denker, Richard. "Dimensioning and control for heat pump systems using a combination of vertical and horizontal ground-coupled heat exchangers." Thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-36475.

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A model has been developed which simulates a system consisting of a horizontal and vertical ground-coupled heat exchanger connected in parallel to the same heat pump. The model was used in computer simulations to investigate how the annual minimum and mean fluid temperatures at the heat pump varied as several parameters of the combined system were changed. A comparison was also made between different control settings for fluid flow rate distribution between the two exchangers. For the case when the flow rate distribution was not controlled, the effect of viscosity differences between a colder
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Bertram, Erik [Verfasser]. "Heat pump systems with vertical ground heat exchangers and uncovered solar thermal collectors / Erik Bertram." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2015. http://d-nb.info/106920854X/34.

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KIM, Eui-Jong. "Development of numerical models of vertical ground heat exchangers and experimental verification : domain decomposition and state model reduction approach." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00684138.

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Ground-source heat pump systems with vertical ground heat exchangers (GHE) are gaining popularity worldwide for their higher coefficients of performance and lower CO2 emissions. However, the higher initial cost of installing the borehole GHEs is a main obstacle to spread the systems. To reduce the required total GHE length and efficiently operate the systems, various systems such as hybrid ones (e.g. solar heat injection) have recently been introduced. Accurate prediction of heat transfer in and around boreholes of such systems is crucial to avoid costly overdesigns or catastrophic failures of
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Kim, Eui-Jong. "Development of numerical models of vertical ground heat exchangers and experimental verification : domain decomposition and state model reduction approach." Thesis, Lyon, INSA, 2011. http://www.theses.fr/2011ISAL0026/document.

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Dans le contexte énergétique actuel, les pompes à chaleur (PAC) géothermiques sont parmi les technologies les plus performantes pour augmenter l’efficacité énergétique des bâtiments. Par contre le coût initial et l’encombrement des capteurs enterrés traditionnels peuvent être un obstacle à sa diffusion sur le marché des énergies renouvelables. Pour réduire ces coût et encombrement, une réflexion sur l’adjonction d’un système d’appoint et/ou de recharge thermique du sol aux capteurs enterrés est actuellement en cours de tests. Les outils actuels de modélisation des capteurs enterrés obtiennent
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Revesz, Akos. "Modelling of the thermal interactions of underground railways with nearby vertical ground heat exchangers in an urban environment." Thesis, London South Bank University, 2017. http://researchopen.lsbu.ac.uk/2071/.

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Ground source heat pumps (GSHPs) can provide an efficient way of heating and cooling buildings due to their high operating efficiencies. The implementation of these systems in urban environments could have further benefits. In such locations ground source heat is potentially available from alternative sources such as underground railways (URs). The potential benefits for using the waste heat generated by URs with localised GSHPs are established in this thesis. This was achieved through investigations of UR-GSHP interactions. The research detailed here was mainly conducted through Finite Elemen
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BÖRJESSON, MARCUS. "Performance evaluation of ground source heat pump heating systems in Stockholm." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286000.

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GSHP systems are common in Sweden but there are few evaluations quantifying the performance of the systems and highlighting problem that occurs during operations. The research project Annex 52 Long-term performance measurement of GSHP systems serving commercial, institutional and multifamily building part of IEA HPT TCP proves the need to systematically be able to evaluate GSHP systems. This thesis aims to expand the knowledge of how to evaluate GSHP systems and provide case studies for Annex 52. Three residential ground source heating systems used for heating has been evaluated and analyzed i
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Pei, Long. "Evaluation of environmental impacts of buildings in China." Electronic Thesis or Diss., Université Paris sciences et lettres, 2020. http://www.theses.fr/2020UPSLM068.

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Le processus d'urbanisation en Chine exerce une forte pression sur l’environnement. Le plus fort potentiel de réduction de ces impacts correspond aux décisions prises lors de la conception du bâtiment, qui peuvent s’appuyer sur des outils de simulation numérique. Cette thèse est consacrée à l’étude de trois conditions aux limites liées à l'évaluation de la performance énergétique et environnementale des bâtiments en Chine : - Le sol : un modèle de pompe à chaleur couplée au sol est proposé, et couplé à un modèle d'échangeur de chaleur géothermique permettant le calcul rapide de la réponse d’un
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Morrison, Andrew. "Finite difference model of a spiral ground heat exchanger for ground-source heat pumps." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0007/MQ43343.pdf.

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Derouet, Marc. "Analysis of borehole heat exchanger in an existing ground-source heat pump installation." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-148158.

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Ground-source heat pumps systems (GSHP) are commonly used all over Sweden to supply heat and sometimes cool to different kinds of housings or commercial facilities. Many large installations are by now between 10 and 20 years old. Even when the design of such system has been tackled, rare are the studies that have dealt with following their performance throughout time in detail. Based on conductive heat transfer, the heat extraction process makes the ground temperature decrease when installations are only used for heating. This thesis aims at proposing a method to evaluate how the temperature i
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Books on the topic "Vertical ground heat exchanger"

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Bouma, J. W. J. Investigation into a complete earth-to-water heat pump system in a single-family dwelling focussing on the application of a vertical subsoil heat exchanger. Commission of the European Communities, 1985.

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Mei, V. C. Horizontal Ground-Coil Heat Exchanger Theoretical and Experimental Analysis. Oak Ridge National Laboratory, 1986.

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Clarke, Andrew. Temperature regulation. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199551668.003.0009.

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For many organisms there is a fitness advantage to being warm. Many organisms use behavioural thermoregulation to maintain a high body temperature during the day, basking in the sun to warm up and retreating to the shade to avoid overheating. This option is not open to most aquatic organisms, or those living in soil or sediment. It is also generally not possible for small or nocturnal organisms. A small number of active predatory fish utilise a counter-current heat exchanger (rete mirabile) to retain metabolic heat and warm their muscles, brain or eyes. A few have modified optical muscles as h
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Hopkins, Graeme, and Christine Goodwin. Living Architecture. CSIRO Publishing, 2011. http://dx.doi.org/10.1071/9780643103078.

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Extensively illustrated with photographs and drawings, Living Architecture highlights the most exciting green roof and living wall projects in Australia and New Zealand within an international context.
 Cities around the world are becoming denser, with greater built form resulting in more hard surfaces and less green space, leaving little room for vegetation or habitat. One way of creating more natural environments within cities is to incorporate green roofs and walls in new buildings or to retrofit them in existing structures. This practice has long been established in Europe and elsewhe
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Book chapters on the topic "Vertical ground heat exchanger"

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Piotrowska-Woroniak, Joanna. "Analysis of a Vertical Ground Heat Exchanger Operation Cooperating with a Heat Pump." In Springer Proceedings in Energy. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13888-2_58.

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Rosen, Marc A., and Seama Koohi-Fayegh. "Thermal Interactions of Vertical Ground Heat Exchangers for Varying Seasonal Heat Flux." In Progress in Sustainable Energy Technologies: Generating Renewable Energy. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07896-0_35.

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Wang, Yao, and Songqing Wang. "Research on Heat and Moisture Transfer Characteristics of Soil in Unsaturated and Saturated Condition with Soil Stratification under Vertical Borehole Ground Heat Exchanger Operation." In Environmental Science and Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-13-9524-6_63.

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Lamarche, Louis. "Horizontal Ground Heat Exchanger." In Fundamentals of Geothermal Heat Pump Systems. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-32176-4_10.

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Lamarche, Louis. "Ground Heat Exchanger Modeling, Inside the Borehole." In Fundamentals of Geothermal Heat Pump Systems. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-32176-4_5.

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Lamarche, Louis. "Ground Heat Exchanger Modeling, Outside the Borehole." In Fundamentals of Geothermal Heat Pump Systems. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-32176-4_4.

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Carlini, Maurizio, and Sonia Castellucci. "Modelling the Vertical Heat Exchanger in Thermal Basin." In Computational Science and Its Applications - ICCSA 2011. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21898-9_24.

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Shi, Zhigang, Shangping Song, and Songtao Hu. "Optimized Design of Ground-Source Heat Pump System Heat Exchanger." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39581-9_71.

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Qiang, Li, and Sun Youhong. "Heat Transfer Model of Vertical Geothermal Heat Exchanger and Calculation Process." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25905-0_34.

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Liao, Quan, and Wenzhi Cui. "Transient Thermal-Resistance-Capacitance Model for U-Tube Ground Heat Exchanger." In Geothermal Heat Pump Systems. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24524-4_5.

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Conference papers on the topic "Vertical ground heat exchanger"

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Chwieduk, Michał, Artur Rusowicz, and Hanna Jędzrzejuk. "Soil Profile and Ground Properties Influence on Vertical Ground Heat Exchanger Efficiency." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.253.

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Soil properties have a significant impact on the performance of ground heat exchangers. Exchangers cooperating with heat pumps are a reliable and efficient source of renewable energy. In the article concentric vertical ground heat exchanger is analysed, which is a common application cooperating with heat pumps. Soil and ground properties have great im-portance during sizing the system, i.e.: determining the length, configuration and deployment of ground heat exchangers. With the depth the soil/ground type and its properties can change significantly. In addition, occurrence of a ground water ca
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Demir, Hakan, Ahmet Koyun, and S¸ O¨zgu¨r Atayılmaz. "Determination of Optimum Design Parameters of Horizontal Parallel Pipe and Vertical U-Tube Ground Heat Exchangers." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88206.

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The most important part of a ground source heat pump (GSHP) is the ground heat exchanger (GHE) that consists of pipes buried in the soil and is used for transferring heat between the soil and the heat exchanger of the ground source heat pump. Soil composition, thermal properties and water content affect the length of ground heat exchanger. Another parameter affects the size of the ground heat exchanger is the shape. There are two basic ground heat exchanger configurations: vertical U-tube and horizontal parallel pipe. There are plenty of works on ground source heat pumps and ground heat exchan
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Kirschbaum, Alexander, Jens M. Kuckelkorn, and Kilian Hagel. "Vertical hydraulic conductivity of borehole heat exchanger systems before and after freeze-thaw cycle stress." In International Ground Source Heat Pump Association. International Ground Source Heat Pump Association, 2018. http://dx.doi.org/10.22488/okstate.18.000032.

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Khan, Md Adnan, and Jay X. Wang. "Evaluation of Low Temperature Ground Coupled Vertical Heat Exchanger in South Louisiana." In 2015 Seventh Annual IEEE Green Technologies Conference (GreenTech). IEEE, 2015. http://dx.doi.org/10.1109/greentech.2015.12.

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Mun, Junghyon, and Yong Tao. "Development of a Tool to Calibrate Vertical Ground Heat Exchanger Model Using Optimization." In ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18274.

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This paper presents a calibration process and its tool of the vertical ground heat exchanger model used in a building energy simulation program, Energyplus. To adequately analyze the performance of the system, calibration of the system model is crucial. The calibration procedure is to estimate input data of the simulation that match the results of the simulation with measured data by an inverse method. The vertical ground loop heat exchanger consists of ground and borehole systems. The thermal properties of the borehole system usually can be found from manufacturer’s data. However, the thermal
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Liao, Quan, Chao Zhou, Wenzhi Cui, and Tien-Chien Jen. "New Correlations for Thermal Resistances of Vertical Single U-Shape Ground Heat Exchanger." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62437.

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The effective pipe-to-borehole and pipe-to-pipe thermal resistances of vertical single U-shape ground heat exchanger are numerically studied. The non-uniform temperature distributions along perimeter of both borehole and outside diameter of two pipes are taken into account to evaluate both the pipe-to-borehole and pipe-to-pipe thermal resistances. The best-fit correlations for these two thermal resistances are proposed and compared with the available equations in the literature. It is found that the present correlations of effective pipe-to-borehole and pipe-to-pipe thermal resistances are mor
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Gao, Zhen, Jinwei Ma, Xiaochun Yu, Yu Zhang, Ning Hu, and Yanping Wang. "Experimental and Simulant Study on Vertical U-Tube Underground Heat Exchanger in Ground-Source Heat Pump." In 2015 4th International Conference on Sustainable Energy and Environmental Engineering. Atlantis Press, 2016. http://dx.doi.org/10.2991/icseee-15.2016.109.

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Bai, Tian, Jian-Li Zhang, and Mao-Yu Zheng. "Notice of Retraction: Simulation and Analysis of Influence Factors on Performance of Vertical Ground Heat Exchanger for Ground Coupled Heat Pump." In 2010 Second International Conference on Computer Modeling and Simulation (ICCMS 2010). IEEE, 2010. http://dx.doi.org/10.1109/iccms.2010.440.

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Skladzien, Jan, Malgorzata Hanuszkiewicz-Drapala, and Adam Fic. "THERMAL ANALYSIS OF VERTICAL GROUND EXCHANGERS OF HEAT PUMPS." In CHT-04 - Advances in Computational Heat Transfer III. Proceedings of the Third International Symposium. Begellhouse, 2004. http://dx.doi.org/10.1615/ichmt.2004.cht-04.190.

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Soriano, Guillermo, and Diego Siguenza. "Thermal Performance of a Borehole Heat Exchanger Located in Guayaquil-Ecuador Using Novel Heat Transfer Fluids." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51468.

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An analysis of thermal performance of a vertical Borehole Heat Exchanger (BHE) from a close loop Ground Source Heat Pump (GSHP) located in Guayaquil-Ecuador is presented. The project aims to assess the influence of using novels heat transfer fluids such as nanofluids, slurries with microencapsulated phase change materials and a mixture of both. The BHEs sensitive evaluation is performed by a mathematical model in a finite element analysis by using computational tools; where, the piping array is studied in one dimension scenario meanwhile its surroundings grout and ground volumes are presented
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Reports on the topic "Vertical ground heat exchanger"

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Liu, Xiaobing, Yarom Polsky, Defeng Qian, and Josh McDonald. Analysis of Cost Reduction Potential of Vertical Bore Ground Heat Exchanger (Final). Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1474649.

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