Abstract
Throttle cycle coolers, operating with mixed refrigerants have been already used at refrigeration temperatures down to 70 K. An industrial single-stage, oil lubricated compressor can be used to provide both, a relatively low cost and long operational time. Application of nonflammable mixed refrigerants is important for safety, transportation, service and maintenance. However, it is more difficult to provide a required refrigeration performance and long-term reliability due to properties of nonflammable components. The paper presents experimental and modeling data for single-stage coolers operating in a temperature range of 80 to 150 K. The nonflammable components were selected to develop mixed refrigerants for the desired temperature ranges. A gas refrigerant supply technology is used for a single-stage cooler design. The minimal achievable temperature is restricted by the freezing point of the mixture. Selected gas refrigerant technology restricts the maximal refrigeration capacity. However, it allows a compromise between stable, long-term reliable operation and simplicity of equipment design. Stability of operation of small-scale, highly reliable coolers has been proven by the data accumulated over more than one year of testing.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
