There are many application cases of radiant air-conditioning technology in new residential and office buildings in China,but a few cases in retrofitting projects. A retrofitted hotel in Beijing adopted air-conditioning system with radiation and fresh air,which the air-conditioning terminal adopted ceiling radiant panel+ground radiant coil+top air-supply,the cold and heat source utilized the air-source heat pump. In the cooling condition,part of the low-temperature cold water supplied by air-source heat pump enters fresh air handling units,the other part enters the water-mixing equipment for radiation. The cooling conditions of this hotel 's air-conditioning system was tested in July 2022,temperature and humidity of this hotel's typical rooms,energy efficiencies of the whole refrigerating system under certain operation strategy were obtained;cooling loads of typical rooms were simulated. Based on test and simulation results,this paper proposes operation suggestions,and predicts energy consumption index of the refrigerating system in whole air-conditioning season.
retrofitting hotelradiant air-conditioningtemperatures and humidityenergy consumption of refrigeration system
NETL
NSTL
万方数据
