The Experiment Analyses About Ground-Source Heat Pump-Radiant Floor Air-Conditioning System

With the improvement of the people's living level, the demand for top grade residence is increasing. Radiation air-conditioning system can fulfill the demand and solve traditional some problem about comfort and healthiness in residential air-conditioning. Ground Source Heat Pump (GSHP) consumes a little electricity power and makes the best of the reproducible low temperature in the topsoil of the earth of crust to condition the indoor air. It does not need much area, not any pollution, not consuming much electricity power, not need much cost. GSHP combined Floor Radiation air-conditioning system possess high seasonal average COP value and great capacity of edaphic depositing heat energy, can ease up supplied water temperature fluctuating with the change of the outdoor air temperature. At present, buildings adopted radiation air conditioning system increasingly increase in our country, especially in north. But in the hot-summer and cold-winter zone, like ChongQing, it is not so prevalent, say nothing of water-water GSHP combined floor radiation air conditioning system. So far, there was no precedent of these kinds of systems in actual project. This paper presents the running effect of the system in real project and analyzes the experimental data in order to generalize the system.Through the former research, some study results about the floor radiation cooling system have been presented on this project. So the main point of the experimental study is heating condition. The author chose two typical rooms to study floor radiation heating system, analyzed change of temperature of every radiation surface in detail, and computed and analyzed the exchanged quantity of heat and room quality of room comfort. The paper analyzed the running parameters-temperature, flux, COP etc-of the GSHP combined floor radiation heating system of four conditions which depend on the amounts of the turned on single vertical U-tube heat exchanger. The four conditions are as follows: conditionâ… that turning on 26 heat exchangers, conditionâ…¡that turning on 12 heat exchangers, conditionâ…¢that turning on 16 heat exchangers, conditionâ…£that turning on 20 heat exchangers. And the paper analyzed the energy cost according to the value showed on ammeter, then linked to the former analyses presented the optimal running condition was 20 heat exchangers. Then the paper presented some technical requires about cybernation of the system and compared water-water GSHP air conditioning system with air source heat pump air conditioning system from economy...