EXERGY ANALYSIS OF A VAPOR COMPRESSION-VAPOR ABSORPTION CASCADE SYSTEM

作     者：Sachdeva, Gulshan Jain, Vaibhav Kachhwaha, S. S. 

作者机构：NIT Dept Mech Engn Kurukshetra 136119 Haryana India MAIT Dept Mech & Automat Engn Delhi 110086 India PDPU Sch Technol Dept Mech Engn Gandhinagar 382007 India 

出 版 物：《INTERNATIONAL JOURNAL OF AIR-CONDITIONING AND REFRIGERATION》 

年 卷 期：2013年第21卷第4期

学科分类：08[工学] 0807[工学-动力工程及工程热物理] 081404[工学-供热、供燃气、通风及空调工程] 0814[工学-土木工程] 

主　　题：Vapor compression vapor absorption exergy ammonia-water irreversibility rate CSB 

摘      要：In this paper, second law analysis has been done for the vapor compression-vapor absorption (VCVA) cascade system. Ammonia-water is considered as the working pair in absorption section and R407C is dealt as the working fluid in VC section. Exergy destruction or the irreversibility rate is determined in each components of VC-VA cascade system, for a wide range of cooling capacity by considering a variable speed reciprocating compressor. Further in this, Coefficient of structural bond (CSB) analysis is carried out to quantify the effect of varying the generator temperature, effectiveness of solution heat exchanger, inlet temperature of external uids in evaporator/condenser and some other variables. Solution heat exchanger and the condenser are reported to have high CSB value, so have a great scope of improvement to reduce the irreversibility rate of the whole system.