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Three Temperature Cooling High Temperature Superconducting Current Lead

IP.com Disclosure Number: IPCOM000028013D
Publication Date: 2004-Apr-19
Document File: 1 page(s) / 222K

Publishing Venue

The IP.com Prior Art Database

Abstract

The main purpose of the three temperature cooling high temperature superconducting current lead is to reduce the conductive heat load to the cold end temperature of a cryogenic system. The removing heat load at an intermediate temperature and reducing the heat load at the cold end temperature is usually more efficient and cost effective.

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Three Temperature Cooling High Temperature Superconducting Current Lead

                            The main purpose of the invention is to reduce the conductive heat load to the cold end temperature of a cryogenic system. The removing heat load at an intermediate temperature and reducing the heat load at the cold end temperature is usually more efficient and cost effective. The standard use of an HTS current lead is to have two cooling temperatures, a warm end temperature and remove the conductive heat load at the cold-end. The main disadvantage is the cost penalty of removing the heat load from the cold end. The operation of the invention is to have a warm end cooling scheme, usually around 60 to 85K and a cold end temperature of the system, usually 4.2K, at an intermediate temperature, 30-35K, depends on the system requirement and design. At this 30-35K cooling station you can remove the heat load prior to it being transmitted to the 4K cooling station and as a result end up with a significantly lower heat load at the coldest point. Tri-Cooling HTS Current Leads: The concept of the "Tri-Cooling" Lead is to have three (3) different cooling methods with three (3) different temperatures ranging below the critical temperature of the superconducting material. The benefit of having three (3) cold stations is to minimize the conductive heat load to the cold temperature usually 4.2K and remove the heat at a warmer temperature where cooling methods, which are usually more cost efficient. An examp...