太阳集热器闭式循环系统流量控制

Flow Control of Closed Circulatory System for Solar Collector

首先介绍太阳集热器热性能测试系统对流量控制的基本要求,然后给出一种闭式循环系统中小流量的控制方法,解决闭式循环系统中流动介质温度大幅度升高时产生汽泡的问题,提出一种精确测量流量的办法。实践表明,这种流量控制系统具有响应速度快、超调量小、稳态精度高的特点。

This paper describes the basic requirements for flow control of the thermal performance testing system of solar collector,then gives a control measure of the small flow in a closed loop control system,solves the bubble problem when the flow medium temperature rises significantly,proposes a way to measure the flow accurately.Practice shows that this flow control system has fast response,small overshoot,and high steady-state accuracy.