2016 Volume 41 Issue 230 Pages 21-25
An adsorption refrigerator with a zeolite adsorbent was developed. The basic performance was tested and reported in a previous paper. In the test, it was observed that the adsorption rate is relatively larger than the desorption ratio. This phenomenon implies that there is the possibility of increasing the efficiency of the developed adsorption refrigerator by narrowing the gap between the adsorption and desorption ratios. It is possible to improve the desorption ratio by decreasing the cooling water temperature flown into the condenser. Conventionally, cooling water flows into the condenser via a heat exchanger with an adsorbent. In this process, the temperature in the cooling water flown into the condenser increases owing to the adsorption heat at the heat exchanger. In these contexts, the direct inflow of the cooling water into the condenser by the reverse flow of the cooling water is effective for improving the desorption rate. Then, the effectiveness of the reverse flow was tested. As a result, an increase in the refrigerating capacity was observed up to 16%. At the same time, an increase in the coefficient of performance based on the heat utilization was also observed up to 8%.
