@inproceedings{ace0976773074687a68b1688d0de5404,
title = "Experimental investigation on mixed-refrigerant for closed-cycle Joule-Thomson cryocoolers",
abstract = "Mixed-Refrigerant (MR) Joule-Thomson (JT) cryocoolers have being under development in our laboratory for various applications during the last few years. We have tested several MRs at different operation conditions and with a few different compressors. One major requirement, that is common to all applications, is a fixed cooling-temperature within all expected environmental conditions, especially different ambient temperatures. Unlike with pure gases, the cold temperature obtained with JT cryocoolers operating with MRs is not constant and depends on the ambient temperature. The present paper gives experimental results for two setups with a single MR (Ne+N2+HCs) that was selected according to previous researches. The experiments included two types of compressors, one is oil-lubricated and the other is oil-free. As a result of this experimental research we have mapped the MR performances over a wide range of operating conditions: high pressures of 2.1 to 2.9 MPa and low pressures of 0.083 to 0.134 MPa for ambient temperatures between -40 to 65°C. A method for improving the cold-temperature stability is also demonstrated.",
keywords = "Closed cycle cryocooling, Cryocooler, Joule-Thomson, Mixed refrigerant",
author = "N. Tzabar and Z. Lapp",
year = "2010",
doi = "10.1063/1.3422274",
language = "אנגלית",
isbn = "9780735407619",
series = "AIP Conference Proceedings",
pages = "1121--1128",
booktitle = "Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference-CEC",
note = "2009 Joint Cryogenic Engineering and International Cryogenic Materials Conferences ; Conference date: 28-06-2009 Through 02-07-2009",
}