Ground-coupled heat pumps

Bose, J. Parker, J. and McQmston, F. (198.S). DesignAIata Manual for Closed-Loop Ground-Coupled Heat Pump Systems. Atlanta American Society of Heating,... 

Kavenaugh, S.P., 1984. Simulation and experimental verification of vertical ground-coupled heat pump systems, PhD dissertation, Oklahoma State University, Stillwater, Oklahoma. 

Fujii, H. 2002. A study on completion and configuration of heat exchange wells in Ground-Coupled Heat Pump systems with groundwater flow. J. Geotherm. Res. Soc. Japan 24(2) pp.191-205. 

Plastic Pipe Requirements for Ground-Coupled Heat Pumps... 

This paper describes the temperature, pressure, fluid compatibility and mechanical strength requirements which must be met by plastic pipe materials for various ground coupled heat pump applications. Existing suitable materials are cited as well as areas where Improvements are required. 

Ground coupled heat pumps may now be feasible, largely due to the availability of durable and Inexpensive plastic pipe. Pipe materials such as polyethylene, FVC, and polybutylene have been found to be adequate In some Instances. However, no material standards or recommended design practices exist to facilitate the optimization of the performance, cost and reliability of these systems. 

Plastic pipe for ground coupled heat pumps must withstand Installation at depths of approximately 1-2 m for horizontal systems or In vertical shafts as deep as 100 m In vertical systems without extraordinary excavation precautions, as well as ground settling after Installation, and thermal stresses during operation without failure. 

Suitable pipe materials for ground coupled heat pumps may already exist. However, no material standards, recommended design practices. Installation procedures or safety precautions have been developed. The operating characteristics of these systems are now known well enough for these standards to be developed. This will facilitate the optimizations of the performance, cost and reliability of these systems. 

Metz, P. D., Design, Operation and Performance of a Ground Coupled Heat Pump System In a Cold Climate, Proc. 1981 In-tersoc. Energy Conv. Conf., ASME, Atlanta, August 9-14, 1981, BNL 29625. 

Bose JE, Parker JD. Ground coupled heat pump research [J]. Ashrae Transactions, 1993, 175-180. Dian Luo. Application and analysis of heat transfer [M]. Beijing Tsinghua University Press, 1990.67-68. 

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