The Experimental Research On The Working Performance Of The DVM System In Summer

The experimental and data collection system for the research on the working principle and energy cost characteristic of the DVM (Digital Variable Multi) system in summer is established. By the experimental research and theoretical analysis, the operational rule of the cooling capacity of the indoor and outdoor unit and the input power of the compressor in summer is studied. According to the working principal of the system in summer, the "HEER" is introduced to judge the energy cost performance of the DVM system. The dynamic load and the total cooling volume of the system in summer are calculated by the DeST software. With the experimental data of the HEER ,the SEER of the DVM system in summer is also got. According to the state principal of the Multi connected air-condition (heat pump) unit(GB/T18837 —2002),the IPLV of the DVM system is calculated. With the comparison of the DVM system and the Frequency conversion multi connected system on energy cost characteristic, the energy saving effect of the DVM system is approved.