Vertical U-shaped Heat Exchangers for Construction Engineering New Promises and Future Challenges

Abstract

The ground source heat pump system is a promising technology for building heating and cooling by using underground energy, however, many technical problems, e. g. low energy utilization rate and inefficiency operation, have great-ly hindered its wide applications. This paper studies the key technologies of verti-cal U-shaped heat exchangers in construction engineering to solve the bottleneck problem and optimizes the system. Three commonly used backfill methods are analyzed, and a double U-shaped branch pipe is recommended to improve con-struction efficiency. The paper sheds a bright light on green energy utilization with high-efficiency, energy-saving, and environmental protection.