使用CO_2空气源热泵回收建筑排风的节能效果分析

Analysis of energy saving effect of recovering building exhaust air by using CO_2 air source heat pump

随着居民对室内环境重视程度的提高,一些北方建筑开始使用机械除霾新风系统,并采取了自然排风的形式,冬季室内排风中蕴藏了不少可利用的潜在热能。为了解使用CO_2空气源热泵回收建筑排风的节能潜力,实测了CO_2空气源热泵的运行性能曲线,并用TRNSYS软件计算比较了2种热回收模式下,即排风混合室外空气与纯室外空气作为低温侧热源的机组性能系数差别。研究表明,排风混合室外空气作为低温侧热源的工况下,平均COP值增加17%,能够24h提供稳定的生活热水,满足人们的需求。

with the residents' increasing attention on the indoor environment,some of the northern building started using machinery haze air system,and take the form of natural exhaust w ay.A lot of available potential energy was included in the exhausted air. To understand exhaust recycling of construction energy saving potential using CO_2 air source heat pump,the performance curves of CO_2 air source heat pump is measured and compared the COP difference of two kinds of heat recovery mode,namely the exhaust mixture of outdoor air and pure outdoor air low temperature heat source.The results show that the average value of COP increases by 17% when the exhaust air is mixed with the outdoor air as the heat source at low temperature.It can provide a stable domestic hot water for 24 hours and meet the needs of residents.