摘要：Organic Rankine cycle (ORC) and Kalina cycle are the main technologies to recover waste heat for power generation. Up to now, many works dealing with the thermodynamic performance comparison between ORC and Kalina cycles are available, but these studies considered for heat recovery from a single heat source or stream. In the process industry, there are multiple waste heat streams, forming a complex heat source profile. In this paper, based on the simulation model developed in the Aspen Hysys software, the two cycles are calculated and compared. According to the waste heat composite curve, the multi-stream waste heat is divided into three kinds, straight, convex, and concave waste heat. Two parameters, the ratio of the heat above and below the most salient/concave point (R) and the temperature of the most point, are used to roughly express the feature of waste heat. With the efficiency from waste heat (exergy) to power as energy performance indicator, the calculation results for waste heat with maximum supply temperature 180 degrees C show that for straight and concave waste heat with R not less than 0.2, Kalina cycle is better than ORC, while for convex waste heat, ORC is preferable. The work can provide a reference to choose a suitable technology to recover low temperature waste heat for power generation in the process industry. (C) 2017 Published by Elsevier Ltd.

关键字：Kalina cycle ORC Energy performance Waste heat recovery Power generation

ISSN号：0196-8904

卷、期、页：卷: 143 页: 482-492

发表日期：2017-07-01

期刊分区（SCI为中科院分区）：一区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：ENERGY CONVERSION AND MANAGEMENT

通讯作者：唐启奎,王梦颖

第一作者：王彧斐,冯霄

论文类型：期刊论文

论文概要：王彧斐,唐启奎,王梦颖,冯霄，Thermodynamic performance comparison between ORC and Kalina cycles for multi-stream waste heat recovery，ENERGY CONVERSION AND MANAGEMENT，2017，卷: 143 页: 482-492

论文题目：Thermodynamic performance comparison between ORC and Kalina cycles for multi-stream waste heat recovery