超声雾化液体除湿空调系统性能实验研究

实验研究了超声雾化液体除湿空调系统的除湿效率，分析了氯化钙和氯化锂混合盐溶液的质量分数、液气比、气液反应时间等因素对除湿效率的影响.结果表明，在9种实验工况下，系统的除湿效率为18.1%~26.9%.随着混合盐溶液的质量分数从38%减小至35%，系统除湿效率逐渐降低；液气比是影响系统除湿效率的重要因素，当液气比由0.18增至0.84时，除湿效率提高约50%；增加气液反应时间能够有效改善除湿效率.另外，提高除湿效率会导致空气温升变大.

Experimental Study of Ultrasound Atomization Dehumidifying System with Liquid Desiccant

This study is concerned with a thermal energy storage defrosting (TESD) based on reverse cycle defrosting method for air source heat pump (ASHP) using sub cooling energy of refrigerant to eliminate frost on surface of outdoor coil. The feasibility of thermal energy storage using sub-cooling energy of refrigerant and defrosting were investigated experimentally. The defrosting performances were compared with a normal 850 W capacity ASHP system standard reverse cycle defrosting (SRCD) method. The results indicate that by the TESD for ASHP using sub-cooling energy of refrigerant method, the system coefficient of performance in heating can be improved due to the sub-cooling of refrigerant outlet of indoor coil, defrosting duration and re heating time can be shortened, and the indoor thermal comfort can be improved when defrosting and re-heating. During defrosting duration, TESD for ASHP using sub-cooling energy of refrigerant method improves discharge and suction pressures by 0.57 MPa and 0.11 MPa, respectively, also shortens defrosting duration and re-heating time by 30.8% and 25% in the tested environment, and reduces defrosting power consumption by 22.8kJ, relative to the SRCD method.