Modeling and optimization of a cascaded mixed gas Joule-Thompson cryoprobe system.(Report): An article from: ASHRAE Transactions

This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on July 1, 2009. The length of the article is 11523 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

From the author: Cryosurgery is a technique for destroying undesirable tissue such as cancers using a freezing process. A thermodynamic modeling tool was developed for a two stage, mixed gas Joule-Thomson (MGJT) cryoprobe used for cryosurgery. A conventional Vapor Compression (VC) cycle using a pure refrigerant pre-cools the MGJT cycle that provides refrigeration at the cryoprobe tip. The model is used with an optimization routine to investigate the optimal mixture composition for different cryoprobe tip temperatures as well as optimal precooling temperatures. The cryoprobe system performance is reported in terms of cryoprobe size, and compressor size and power consumption. The results for the two stage system are compared with the performance of a single stage MGJT cycle to demonstrate the benefits and limitations associated with the addition of the precooling cycle.

Citation Details
Title: Modeling and optimization of a cascaded mixed gas Joule-Thompson cryoprobe system.(Report)
Author: Harrison Skye
Publication:ASHRAE Transactions (Magazine/Journal)
Date: July 1, 2009
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 115 Issue: 2 Page: 966(18)

Article Type: Report

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