家用变频多联机房间温降实验研究

Experimental study on the indoor temperature drop for a domestic inverter-driven multi-split air conditioner

采用多组管形式的家用变频多联机即一拖多空调器,无需分歧管,安装焊接量少,直接匹配相应长度的连接管即可,具有安装简便、占用空间少、搭配灵活等优点。以名义制冷量为9000 W的一拖四空调器为实验对象,室内配有4台挂机(超配),其中3台名义制冷量为2600 W,另外1台制冷量为5300 W。在空调环境实验室,重点研究了其中单独设2600 W挂机的小房间在不同初始室温、不同用户设置温度以及2种频率控制方案下的自由温降,实验表明,合理的频率控制对室内温降速率、温降程度等有比较重要的作用。

Refrigerant flows directly into a few indoor units to make heat exchange through prepared long pipes in a multiple-split type air conditioner with simple installation and less occupation but more convenience.Four wall-mounting type indoor units,among which three units were of 2600 W nominal cooling capacity while the other one was of 5300 W,were matched with a multi-split air conditioner outdoor unit with nominal capacity of 9000 W in an environment laboratory.This excessive match is close to real situation in users'rooms.Free temperature decreases of a room in which an indoor unit with 2600 W nominal capacity was experimentally studied under different initial room temperatures,user's setting temperatures and two different compressor frequency control logics.Results show that reasonable frequency control is very important for the extent and rate of temperature decrease of indoor environment.