-
公开(公告)号:US20120022706A1
公开(公告)日:2012-01-26
申请号:US13258267
申请日:2010-02-23
申请人: Junqiang Fan , Stevo Mijanovic , Yinshan Feng , Degang Fu , Runfu Shi , Zheng O'Neill
发明人: Junqiang Fan , Stevo Mijanovic , Yinshan Feng , Degang Fu , Runfu Shi , Zheng O'Neill
CPC分类号: F25B41/062 , F25B49/005 , F25B2309/061 , F25B2341/0662 , F25B2400/13 , F25B2400/23 , F25B2600/2509 , F25B2600/2513 , F25B2700/19 , F25B2700/195 , Y10T137/0318
摘要: A method and system for operating a CO2 refrigeration system is provided. Two pressures are controlled by two controllers through two valves in this system. A first valve is actuated by a first controller using a first transfer function in response to the first measured pressure. A second valve is actuated by a second controller using a second transfer function in response to the second measured pressure. When it is determining the second valve failed to operate correctly, the first valve is actuated by a third controller using a third transfer function.
摘要翻译: 提供了一种用于操作CO 2制冷系统的方法和系统。 两个控制器通过两个阀门控制两个压力。 第一阀门由第一控制器致动,第一控制器响应于第一测量压力使用第一传递函数。 响应于第二测量压力,由第二控制器使用第二传递函数致动第二阀。 当确定第二阀不能正常工作时,第一阀由第三控制器使用第三传递函数致动。