长沙某商业建筑空气-空气能量回收装置节能性分析

Energy Saving Analysis of Air-to-air Energy Recovery Equipment in a Commercial Building in Changsha

通过对长沙市典型气象年逐时气象参数、商业建筑供冷和供热工况下新风逐时送风温差和送风焓差进行分析,分别得出采用显热型和全热型空气-空气能量回收装置的逐时回收能量。结果表明,长沙市夏季高温高湿气候条件下,加之冬季制热工况下节约的能量,采用全热回收装置节能量显著,具有较好的经济效益,投资回收期约4.4年。

The hourly air supply temperature difference and enthalpy difference of fresh air are analyzed,based on the hourly parameters of typical meteorological year in Changsha,and cooling and heating conditions of a commercial building. Respectively,the hourly recovered energy is obtained by sensible-heat and full-heat air-to-air energy recovery equipment. The results show that,under the high temperature and high humidity conditions in summer of Changsha,with the energy saving under heating conditions in winter,the air-to-air energy recovery equipment saves energy significantly with good economic benefits,and its investment recovery period is about 4. 4 years.