Speaker
Marcel ter Brake
(University of Twente)
Description
The performance of a Joule Thomson (JT) cryocooler can be improved by introducing an ejector into the JT cooling cycle. The function of the ejector is to lift the pressure of the gas leaving the evaporator to a higher level, thus reducing the cold-end temperature and/or the input power of the compressor. In this paper, the performance of an ejector operating with nitrogen gas is investigated experimentally and numerically. The effects of geometry and operating parameters on the ejector performance are analyzed. The validity of the numerical model is verified by comparison between the predicted and measured overall ejector performance. Meanwhile, the local flow features of the ejector are visualized through numerical modelling.
Authors
Dr
Haishan Cao
(University of Twente)
Mr
Gerjan Hammink
(University of Twente)
Srinivas Vanapalli
(University of Twente)
Mr
Harry Holland
(University of Twente)
Mr
Cris Vermeer
(Foundation SuperACT)
Marcel ter Brake
(University of Twente)
