1MW塔式太阳能电站换热网络的动态模拟  

Dynamic Simulation of Heat Exchange Network for a 1 MW Solar Power Tower Plant

作　　者：李显[1] 朱天宇[1] 徐小韵[2] 

机构地区：[1]河海大学机电工程学院,常州213022 [2]河海大学水利水电工程学院,南京210098

出　　处：《动力工程》2010年第1期63-67,共5页Power Engineering

基　　金：国家863高技术基金资助项目(2006AA050104)

摘　　要：以1 MW塔式太阳能热电站蓄热系统的换热器网络为研究对象,通过理论分析,建立了管壳式换热器的动态数学模型,并验证了该模型及计算方法的合理性.在此基础上,采用模块化仿真方法分析了充、放热过程中受到入口温度、流量以及流量和温度同时扰动时,换热器A和C的动态特性.结果表明:换热器A和C都具有较大的热惯性,其动态响应时间分别约为30 min和20 min;在蒸汽进口温度的扰动下,换热器A和C导热油与蒸汽出口温度均无响应时滞;在导热油入口温度的扰动下,换热器C导热油出口温度存在响应时滞.The heat exchanger network of the thermal storage system of a 1 MW solar thermal power tower plant was used as the object of study. Through theorical analysis, a dynamic numerical model of the shelland-tube heat exchanger was established, and the reasonability of the model and the calculation method was verified. Then the dynamic behaviors of heat exchanger A and heat exchanger C were analyzed by the modular simulation method when the inlet temperature or flow rate was disturbed as well as both of the inlet temperature and flow rate were disturbed during heat accumulation and heat discharge process. Results show that the thermal inertias of heat exchanger A and C are big, and the dynamic response time of the two exchangers are about 30 minutes and 20 minutes respectively;under the disturbance of inlet steam temperature, there is no time lag for the response of outlet temperature of steam and heat transfer oil for both the two exchangers; under the disturbance of inlet temperature of heat transfer oil, there is a time lag for the response of outlet temperature of heat transfer oil for heat exchanger C.

关 键 词：塔式太阳能热电站 双级蓄热系统 换热器网络 管壳式换热器 动态模拟 

分 类 号：TK513[动力工程及工程热物理—热能工程]