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Data Processing System with High Temperature and Low Temperature Water Cooling Loops and Water To Air Heat Exchanger

IP.com Disclosure Number: IPCOM000045883D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Antonetti, VW: AUTHOR

Abstract

A water-cooling system for data processing apparatus is operated in a normal temperature loop for logic circuits and in a higher temperature loop for power supply circuits. The higher temperature of the coolant from the power supply circuits permits a water to air heat exchanger to operate more efficiently. In one system, the heat exchanger for the warmer discharge water from the power supply circuits is located in the cooling air path downstream from the heat exchanger for the cooler discharge water from the logic circuits. In an alternative system, the cooler discharge water from the logic circuits is combined with warmer discharge water from the power supply circuits to give a combined return flow having a temperature midway between these discharge temperatures.

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Data Processing System with High Temperature and Low Temperature Water Cooling Loops and Water To Air Heat Exchanger

A water-cooling system for data processing apparatus is operated in a normal temperature loop for logic circuits and in a higher temperature loop for power supply circuits. The higher temperature of the coolant from the power supply circuits permits a water to air heat exchanger to operate more efficiently. In one system, the heat exchanger for the warmer discharge water from the power supply circuits is located in the cooling air path downstream from the heat exchanger for the cooler discharge water from the logic circuits. In an alternative system, the cooler discharge water from the logic circuits is combined with warmer discharge water from the power supply circuits to give a combined return flow having a temperature midway between these discharge temperatures. This mid-temperature discharge water is used directly to cool the power supply circuits, and it is passed through the water to air heat exchanger and then to the logic circuits.

Background. Circuits are sometimes cooled by chilled water that is circulated through cold plates that are in contact with the circuits. The cooling water flows in a closed loop and the warmed discharge water from the circuits is cooled by a heat exchanger that is cooled by chilled water or by air. The air is ordinarily not as cold as chilled water, and there is a problem in providing a heat exchange system that...