摘要
针对可在不同环境温度下制取高温热水的复叠式空气源热泵系统,运用二级压缩比大致相等的原则确定最优中间温度从而控制中间冷凝压力的方法。采用适用性较好的比例-积分-微分(Proportion Integration Differentiation,PID)算法,利用可编程逻辑控制器(Programmable Logic Controller,PLC)进行核心控制,通过实验验证了在不同的室外环境温度条件下,面对负荷的变化,该系统控制快速、平稳且精确,实现了对复叠式空气源热泵系统的优化控制。
For the cascade air-source heat pump operated under different environment temperature, the proper control of intermediate pressure is important. In this paper the principle that two stage compression ratio is approximately equal is used to determine the interme-diate pressure at the optimal middle temperature. The proposed method and control strategy were implemented by highly applicable Propor tion Integration Differentiation （PID） algorithm and Programmable Logic Controller（PLC）. A test was conducted, and it showed that the control method was sensitive, stable and accurate with various outside conditions and indoor loads.
出处
《制冷学报》
CAS
CSCD
北大核心
2014年第1期38-45,共8页
Journal of Refrigeration
基金
国家自然科学基金(51208298)资助项目
上海市研究生创新基金项目(JWCXSL1202)
上海市教委科研创新项目(13YZ070)
上海市教委重点学科建设项目(J50502)
上海高校青年教师培养资助计划(ZZslg12020)资助~~
