A Study of Performace Characteristics of LiBr-Water Absorption Refrigerating Cycle. Exergy Analysis on Absorption Process, Single- and Double-Effect Cycle.

Abstract

It is important for energy saving to use the waste heat efficiently. An absorption cycle is effective equipment for the thermal utilization. In order to improve the performance of absorption cycle for the various operating conditions, it is important to analyze the exergy loss in each component and evaluate not only the quantity but also the quality of heat flow. In this paper, the evaluation of exergy loss in the absorption process and an exergy analysis of the single-and double-effect LiBr-water absorption refrigerating cycles whose heat source is a saturated steam at the pressure of 800 kPa were carried out, and the exergy loss in each component were obtained. As a result, it was shown that the exergy coefficients and the COP of the single-effect absorption cycle were about 17% and 80%, and those of the double-effect cycle were about 30 and 140%, respectively.