High Efficiency Heat Pump Using Ground Heat Source. Final Report

摘要

The purpose of this project was to demonstrate a high efficiency ground coupled heat pump for residential use. The most important aspect of the demonstration was the method of ground coupling for the heat pump. The system used a water well and closed loop heat exchanger for ground coupling in a method that is practical and may be widely applied in the central Texas area. The heat pump system was installed in a typical family residence in Austin, Texas, and used as the only means of heating and cooling for one year. System performance was monitored and operating data were recorded and compared with predictions made during the design phase of this project. A summary of the project and a list of conclusions concerning the performance and practicality of the heat pump system demonstrated are presented. The design of the system and predictions made for its performance are discussed. The measured performance of the demonstration system is discussed. A cost comparison of the demonstration system and a more conventional heat pump system is included. Cost figures for the demonstration system are presented there. (ERA citation 09:028582)