Investigation of a two-stage open cycle absorption system for recovering waste heat
This paper presents a two-stage open cycle absorption system for reutilizing waste heat in moist exhaust gas from industrial drying processes.In the system,vapor produced in the first absorber increases the pressure difference in the second absorber,leading to a higher dehumidification rate,thus more latent heat is recovered and transferred to sensible heat to increase the outlet temperature of drying gas to satisfy the demand of reutilizing.A thermodynamic analysis model is established to evaluate performance of the system in terms of coefficient of performance(COP),dehumidification rate(DR)and heat recovery rate(HRR)under various operating conditions including inlet gas temperature and humidity ratio,cooling water temperature and flow rate,and evaporation pressure.Performance curves obtained are presented.The performance of the two-stage open cycle absorption system is compared with that of the one-stage open cycle absorption system.Under the setting condition,the outlet gas temperature can be 55%higher than that in one-stage system and dehumidification rate can be 20.3%higher.The results show that the two-stage open cycle absorption system is a viable technology for recovering waste heat in low temperature moist gas and recycling in industrial drying processes.
Two-Stage Open Cycle Absorption Latent Heat Performance
Bicui Ye Jun Liu Guangming Chen Jiao Zheng
Institution of Cryogenics and Refrigeration,Zhejiang University,HangZhou,China Institution of Ningbo Technology,Ningbo,China
国际会议
桂林
英文
1-12
2013-07-16（万方平台首次上网日期，不代表论文的发表时间）