THEORETICAL STUDY ON A FROST-FREE HOUSEHOLD REFRIGERATOR-FREEZER

摘要

This study deals with a frost-free household refrigerator-freezer, in which frosting can be retarded byrndehumidifying the air before it enters the evaporator of the refrigerator-freezer via a desiccant-coated heatrnexchanger. Because the desiccant can be regenerated via the condensation heat of the refrigerant (which isrnexhausted into ambient air in conventional household refrigerator-freezers), the proposed system can achievernhigh energy efficiency. Calculations show that the coefficient of performance of this system (COP) is withinrnthe range 1.5 ～ 2.5 at an ambient temperature of 15 ～35℃. Moreover, calculation results show that the COPrnof the proposed frost-free system is increased by 6~17% compared to the conventional system.