Condensing heat recovery system of air conditioning system in a star-hotel in hot summer and warm winter zone

Based on the energy consumption of the air conditioning system and the characteristics of the cooling and heating load in hotels, studies the energy efficiency and necessity of adopting condensing heat recovery from water chillers. Taking an air conditioning project for a five-star hotel as an example, presents the optimization design of the air conditioning heat recovery system, in which an increased temperature difference between supply and return water and the hot water tanks in series are adopted, effectively realizing cascade and sequential utilization of hot water based on the water temperature stratification. The analysis results show that the system makes better use of the condensing heat of water chillers and is more energy efficient, and hot water supply temperature is relatively stable.