The Research On The Properties Of Ground-Source Heat Pump Air Conditioning System

With the increasing seriousness of the problem of energy and environment more and more HVAC systems have been in service in World, which have significant influence upon energy and environment. Ground source heat pump (GSHP) system has a good development which is in the character of energy saving and environment protection. But this technology hasn't been broadly used. And it has still some problems, which are expected being selected in the design and run. Therefore it is essential to understand roundly the character of GSHP systems, find the existent problems, and exploit the other approach of utilizing the ground energy.The paper surveys a groundwater heat pump system that is running in the heating mode in some region in Hunan. In this survey, we investigate the quantity, quality, and temperature of the circulating water, the electric consumption, and the outside weather parameter and so on. Based on the test date, we roundly understand the operation characteristic of this system in the heating mode, and analyze the influence of the different parameters on the coefficient of performance of the heat pump units. At the same time in this paper we also compare ground-source heat pump system to the air-source heat pump system and the boiler heating systems, which indicates the GSHP system utilizing ground water is more superior in energy saving and environmental protection. And according to the operating states of the system, the author optimizes the system in theory. All this experiment results can also provide some reference values for the design, manufacture and operation of ground source heat pump systems in the further.Besides, the author mentions the wading pool heat pump in this paper. Based on lumped-heat-capacity method and finite difference method, thermal storage of the wading pool is processed unsteady state heat transferring count through the program. In the intermittent run of the system, the paper analyses how the pool temperature change. And it also presents the influence of several parameters on heat transfer between the wading pool and the soil. It is feasible that it can be primary cold/heat source for air conditioning in the small-scale...