氨水功冷正逆耦合循环的经济性分析  

ECONOMIC ANALYSIS OF AN AMMONIA-WATER POWER/REFRIGERATION COGENERATION SYSTEM

作　　者：罗尘丁[1,2] 张娜[1] 刘猛[1,2] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院研究生院,北京100190

出　　处：《工程热物理学报》2009年第8期1283-1287,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目资助(No.50576096)

摘　　要：本文对一氨水功冷正逆耦合循环进行了经济性分析,该循环采用分流吸收系统对关键流股浓度、流量进行调节,满足了不同热力过程的不同浓度需求,联产后系统热力性能大为改善。本文考察基础循环工况下联产系统总投资、产品成本和回收期,与同等规模分产系统进行对比。结论如下:发电量约700 kW、制冷量约200 kW时系统总投资700多万元,回收期约4.5年,经济性良好;相对分产系统,节能近20%,总成本降低约15%,充分显示出联产优越性。参数敏感性分析表明电价对联产系统回收期的影响最大。This paper investigates performances and cost assessments of an ammonia-water cycle for power and refrigeration cogeneration. The system integrates an ammonia-water Rankine cycle with an ammonia refrigeration cycle, and introduces a splitting and absorption unit to meet the different concentration requirements in heat addition and condensation processes so that the exergy destruction could be reduced significantly and the system could gain good thermal performances. Our estimates show that the total capital cost （CC） for the cogeneration system of about 700 kW power output and about 200 kW cooling capacity is about 7 million CNY; the payback period （PBP） is about 4.5 years, which indicates the system has favorable economic benefits as well. Besides the electricity price is found to be the most influential factor to PBP. Compared to conventional separate generation systems with the same output, the cogeneration system decreases by 18.2% and 15.4% in energy consumption and products cost respectively; it performs pretty well in power and refrigeration cogeneration.

关 键 词：功冷联供 氨水工质 经济性分析 

分 类 号：TK123[动力工程及工程热物理—工程热物理]