Analysis Of Comfort And Energy Consumption Of Double Cooling Source Radiant Air Conditioning Systems With Different Building Types In Different Regions

In recent years,the independent temperature and humidity control air conditioning system has developed rapidly,among which the capillary radiation air conditioning system has received more attention and research.Capillary-radiated air conditioning system reduces the energy loss caused by the heat and humidity coupled treatment of traditional air conditioning system,and has good comfort.These advantages are derived from the unique capillary-tube end of the system.Therefore,this paper studies the thermal comfort and energy consumption of radiant air conditioning system from three perspectives of building type,area of use and terminal form.Meanwhile,the fresh air mode of the air conditioning system is displacement ventilation.The cold and heat source consists of two heat pump units with different evaporation temperatures.The two most widely used scenarios of capillary radiation air conditioning system are office buildings and villas.Firstly,the simulation models of offices and villas are established.Then,the capillary + ground source heat pump system for roof laying and the capillary + ground source heat pump system for wall laying are established in villas and office building models respectively,and the VRV system is used as a simulation reference item to compare the annual running energy consumption,separate energy consumption and thermal comfort in the room.Then,the comparison between Shanghai and Xi'an areas is made as an example.Finally,the following conclusions are drawn.(1)From different terminal forms.Regardless of the area,the wall radiation system has low energy consumption and high thermal comfort in villas;in office buildings,the wall radiation system has low energy consumption and high thermal comfort in roof radiation system.(2)From different application areas.In villas,roof radiation system has lower energy consumption in Shanghai,but its thermal comfort is not as good as that in Xi'an.The application of wall radiation system in Shanghai area has lower energy consumption and higher thermal comfort.In office buildings,the application of roof radiation system and wall radiation system in Shanghai area has lower energy consumption and higher thermal comfort.(3)From different building types.The application of roof radiation system and wall radiation system in villa buildings in Xi'an has higher thermal comfort,but the energy consumption is higher than that of office buildings;the application of roof radiation system and wall radiation system in Shanghai area has lower energy consumption,but the thermal comfort of wall radiation system is inferior to that of villa buildings.This research has certain guiding significance for the practical application of capillary radiation system from three angles: different terminal forms,different application areas and different building types.Today,with the increasingly exhausted energy,radiation air conditioning system has great application prospects.