改进Kalina循环模型的建立及性能分析  

Study on the Model Establishment and the Performance Analysis of the Modified Kalina Cycle System

作　　者：杨凯杰 绳晓玲[1] YANG Kaijie;SHENG Xiaoling(North China Electric Power University(Baoding),Baoding 071003,Hebei,China)

机构地区：[1]华北电力大学(保定),河北保定071003

出　　处：《能源研究与管理》2022年第3期77-83,共7页Energy Research and Management

基　　金：中央高校基本科研业务费资助项目(2018MS121)。

摘　　要：为了降低CO_(2)的排放,充分开发利用海洋能源,助力我国早日实现碳中和,提出一种改进Kalina循环。以经太阳能辅助加热的温海水为热源,并通过对改进Kalina循环系统的汽轮机进口温度以及汽轮机进、出口压力进行分析,探究其对改进Kalina循环系统输出净功、热效率和吸热量及放热量的影响。实验结果表明:改进后的Kalina循环与Kalina循环相比,系统吸热量、放热量和工质泵功耗分别降低3.17%、4.04%和25.59%,输出净功增加0.75%;随着汽轮机进口压力的增大,系统的净输出功先增后减,吸热量及放热量均不断减小;系统的输出净功和热效率随着汽轮机出口压力的增加而减小;系统的输出净功、热效率和吸热量及放热量随着汽轮机入口温度的增加而增加,研究结果对提升发电厂的发电效率有一定意义。In order to reduce CO_(2) emissions,fully develop and utilize ocean energy,and help China achieve carbon neutrality as soon as possible,this paper proposes an improved Kalina cycle.Warm seawater heated by solar assisted heating is used as the heat source,and its effects on the net work output,thermal efficiency and heat absorption and discharge of the improved Kalina cycle system are investigated by analyzing the turbine inlet temperature as well as turbine inlet and outlet pressure of the improved Kalina cycle system.The experimental results show that:compared with Kalina cycle,the improved Kalina cycle has 3.17%,4.04%and 25.59%lower heat absorption,4.04%and 25.59%lower heat discharge and 25.59%higher net work output respectively;with the increase of turbine inlet pressure,the net work output of the system increases and then decreases,and the heat absorption and heat discharge both decrease continuously;the net work output and thermal efficiency of the system With the increase of turbine outlet pressure,the net output work,thermal efficiency,heat absorption and heat release of the system increase with the increase of turbine inlet temperature,and the results of the study have some significance to improve the power generation efficiency of the power plant.

关 键 词：海洋温差能转换 KALINA循环 热效率 可再生能源 

分 类 号：TK011[动力工程及工程热物理]