Experimental Study on Operating Characteristics of Residential Temperature Humidity Independent Control Air conditioning

Abstract:

An experimental study was made of the change characteristics of sensible cooling ratio of the residential temperature humidity independent control air conditioning. The experiment was made in the enthalpy potential laboratory and the parameters value of heat exchange medium that filled in two evaporators were remained unchanged. By changing the compressor speed and the refrigerant distribution ratio, the curves of cooling capacity, sensible cooling ratio SCR and the energy efficiency ratio EER could be obtained. The experimental results indicate that not only the total cooling capacity, but the ratio of the sensible and latent heat handling capacity can be changed. The range of SCR is from 0.6 to 1.0, which is much more than the traditional air conditioning. It means that it can match the room sensible heat ratio (SHR) and control the indoor thermal environment better. Meanwhile, SCR is restricted by the total cooling capacity and EER. For saving energy, EER should be maximized on the basis of the realization of the cooling capacity and SCR.

Key words:residential temperature humidity independent control; air conditioning; sensible cooling ratio (SCR); energy efficiency ratio (EER); experimental study