基于多目标下的两级并联除湿热泵系统实验研究

Experimental study of two-stage parallel desiccant coated heat pump system based on multi-objectives

提出了一种新型的两级并联除湿热泵系统,并在典型工况下对系统性能进行了实验研究。实验表明,该系统可以有效解决除湿热泵显热负荷处理能力不足的问题,能够灵活部署显热和潜热两端不同比例的热负荷:在典型工况下可提供19.0℃、8.81g/kg的舒适区送风,在冷凝温度50℃下平均COP达3.92。当冷凝温度从55℃变化到35℃时,COP从3.39上升到5.81,显热负荷比始终保持在16∶1以上。在不同环境下系统湿负荷占比可达到7%~60%,满足大部分送风状态的温湿度解耦。

A novel two-stage parallel desiccant coated heat pump system is proposed,the system performance is experimentally studied under air typical conditions.The experiments show that the system can effectively solve the problem of insufficient handling capacity of the sensible heat load of the solid desiccant coated heat pump(SDHP),the sensible and latent heat load can be flexibly deployed in different ratio:it can provide 19.0℃and 8.81 g/kg of air supply in the comfort zone under typical air conditions,the average COP reached 3.92 under the condensing temperature of 50℃.The COP risen from 3.39 to 5.81 when the condensing temperature changed from 55℃to 35℃,the sensible heat load ratio is always maintained above 16∶1.The latent load ratio of the system in different environments can reach 7%—60%,which can meet the requirements of temperature and humidity decoupling in most air supply conditions.