A performance test of adsorption refrigeration system applying superabsorbent polymeric adsorbent

Abstract

Embedded Adsorption refrigeration technology has an advantage of providing efficient cooling with the heat supplied from the community energy supply system including the feed water of district heating system, industrial waste heat, and others. however, conventional adsorption refrigeration system shows a low COP. In this study, SAP(superabsorbent polymer) was coated on a fin-tube heat exchanger by about 100 um thickness to enhance heat and mass transfer performance during adsorption and desorption processes. Adsorption and desorption test were performed to analyze the performance of SAP coated adsorber. System performance such as SCP(mass specific cooling power) and COP was measured according to cycle duration from 14 to 70 minutes. The SCP shows a nearly constant value with respect to period except 70 minutes of period. As the cycle time gets longer, the SCP decreases but the COP increases. COP was estimated to be 0.2 to 0.45 and SCP was 170 W/kg.