Beschreibung:
The global popularity of floor heating technology promotes the development of radiant floor cooling technology. Many office buildings in northern China try to use floor radiant cooling technology to cool in summer. Radiant floor cooling technology is an intelligent technology for low-carbon buildings with the advantages of energy saving, but the thermal comfort is the key problem restricting the promotion of this technology. In this paper, the thermal comfort problems of an office room with radiant floor cooling is studied by the methods of numerical simulation, control variable and data fitting, and the experimental results have been verified in multiple ways. It is found that for an office room using radiant floor cooling, the effect of floor surface temperature on PMV is about 16%, while the effect of indoor air temperature on PMV is 83.87%, and relative humidity has little effect on PMV. A simplified PMV calculation model is proposed, which can be used as a thermal comfort index to adjust the floor surface and indoor air temperature, or can be used to calculate PMV value. The finds have guiding significance for the design and control of floor radiant cooling technology