| Nowadays,radiant floor heating has been developed into a mature heating form,and our country has also issued the technical regulations of radiant floor heating.With people's continuous pursuit of higher quality of life,radiant floor heating will be popularized and applied in a wider range due to its good comfort.If end of heating system can be directly used in summer cooling,it can not only reduce the initial investment of the system,but also avoid the problems of "air conditioning disease" and noise caused by traditional convection air conditioning.In this paper,numerical simulation and experimental research methods were used to study the radiant floor cooling air conditioning system,the main research contents are as follows:(1)The effects of different proportion of sensible heat load on indoor thermal comfort and air quality of radiated floor and independent fresh air were studied.The results showed that the indoor comfort and air quality were better when the indoor load was about 50%.(2)Using the heat exchanger to realize the cooling medium with different temperature by the same cold heat source,and when the water supply temperature of the radiant floor in the summer was about 17?,the radiation temperature of the surface can be kept at about 20?,so that the requirements of air conditioning in the summer can be met.(3)According to the condition that the fresh air bears 60% of the total load in the simulated working condition,the experimental results showed that there was no condensation in the room,and the sitting position and standing position will not cause local heat discomfort. |
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