ASHRAE LO-09-092

Modeling and Optimization of a Cascaded Mixed Gas Joule-Thompson Cryoprobe System

contributor author	ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
date accessioned	2017-09-04T17:50:52Z
date available	2017-09-04T17:50:52Z
date copyright	01/01/2009
date issued	2009
identifier other	EXYXPCAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/174142
description abstract	ABSTRACT 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.
language	English
title	ASHRAE LO-09-092	num
title	Modeling and Optimization of a Cascaded Mixed Gas Joule-Thompson Cryoprobe System	en
type	standard
page	18
status	Active
tree	ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.:;2009
contenttype	fulltext