Numerical simulation of U-tube heat exchanger in absorption heat pump system combined waste-heat and ground-source

Combining the sintering waste-heat system, absorption heat pump and ground heat exchanger system, establishes a waste-heat and ground-source lithium bromide absorption heat pump experimental system. Simulates the heat transfer characteristics of the U-tube heat exchanger in this system with Fluent software, and conducts an experiment to verify the simulation results.The results show that the simulation results are consistent fairly with the experimental results. The soil temperature around both single U tube or double U tube has no significant change along the depth direction, but has larger change along the horizontal direction in the different depths.