... to obtain accurate results. Additionally, many parameters should be included and analyzed to adjust the model and obtain acceptable predictions. Those parameters can include recycle valve characteristics, the controller and actuator, suction and discharge piping volumes, aftercoolers, and operating...

... and travel times of the existing anti-surge valves, delay of the coast down action, failure of the non-return valves (NRVs), action of a blowdown valve on the emergency shutdown (ESD) sequences, recycle valve bypasses, check valve arrays, and process upset conditions. The results of this analysis provide...

... to keep the compressor online down to zero flow into the system, without upsetting the process during the transition from operating with a closed recycle valve through a fully open valve. A summary on application guidelines for sureg control systems is given by Brun and Nored in [1]. For normal operation...

.... The recycle valve and its controller and actuator as well as the suction and discharge piping volumes, aftercoolers, operating conditions, other parameters, and various control response times are all characteristics that govern whether a compressor will reach its surge limit at a detrimental high head...