Liu Min, Wang Yuanpeng, Shi Jingfeng, et al. Experimental Investigation on Reheat Dehumidification Performance of Multi-split Variable Refrigerant Flow Rate Air-conditioning System[J]. Journal of refrigeration, 2016, 37(2).
Liu Min, Wang Yuanpeng, Shi Jingfeng, et al. Experimental Investigation on Reheat Dehumidification Performance of Multi-split Variable Refrigerant Flow Rate Air-conditioning System[J]. Journal of refrigeration, 2016, 37(2). DOI: 10.3969/j.issn.0253-4339.2016.02.101.
A multi-split variable refrigerant flow rate (VRF) air conditioning system with reheat dehumidification was built in the paper. With the VRF system
the dehumidification amount was experimentally studied under 6 operating conditions. The influences of opening degree of reheat electronic expansion valve (EVW) and reheat heat exchange area on outlet air temperature of indoor unit were experimentally investigated in detail. The experimental results indicated that the employment of parallel reheat heat exchanger increased the dehumidification amount of the VRF system effectively; the dehumidification amounts of indoor unit 1# and 2# increased by 11.7%~40.4% and 10.5%~28.9%
respectively. Optimal EVW opening degree existed for reheat heat exchanger to obtain the maximum reheat temperature difference; the optimal EVW opening degree increased with the decrease of indoor temperature Ti. For purpose of isothermal dehumidification mode
the required EVW opening degrees of indoor unit 1# and 2# were 9.6%~9.9% and 6.5%~7.0%
respectively. For purpose of dehumidification mode with To>Ti
the required EVW opening degrees increased with the decrease of both indoor temperature and reheat heat exchange area.