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Browse Prior Art Database

Boiling Point Controller for Binary Coolant Mixtures

IP.com Disclosure Number: IPCOM000073919D
Original Publication Date: 1971-Feb-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Aakalu, NG: AUTHOR

Abstract

A change of boiling temperature of a coolant mixture occurs whenever there is a change in its composition. The change in the composition can be sensed by measuring any change in its viscosity. The viscosity of the coolant mixture 10 is sensed by a device consisting of a floating cylinder 12 which is spring 14 loaded such that it tends to remain in a fixed position unless sufficiently torqued. A shaft 16 extends concentrically through the middle of the container 12. The shaft 16 is rotated in the liquid 10 within the container 12 such that the turning of the shaft causes motion of the liquid within the container which essentially provides an angular displacement or torquing of the container against the calibrated force of the spring 14.

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Boiling Point Controller for Binary Coolant Mixtures

A change of boiling temperature of a coolant mixture occurs whenever there is a change in its composition. The change in the composition can be sensed by measuring any change in its viscosity. The viscosity of the coolant mixture 10 is sensed by a device consisting of a floating cylinder 12 which is spring 14 loaded such that it tends to remain in a fixed position unless sufficiently torqued. A shaft 16 extends concentrically through the middle of the container 12. The shaft 16 is rotated in the liquid 10 within the container 12 such that the turning of the shaft causes motion of the liquid within the container which essentially provides an angular displacement or torquing of the container against the calibrated force of the spring 14. It will be appreciated that the angular displacement of the container 12 from its fixed position depends upon the speed of rotation of the shaft 16 and the viscosity of the liquid 10. The container has a number of electrical contacts 20 arranged about the periphery so that the angular displacement can cause connection with an additional contact to complete an electrical circuit which is used to control a valve to add makeup liquid thereby bringing the viscosity of the liquid back to the desired point. Maintaining the viscosity of the liquid at the desired valve essentially maintains the boiling point of the liquid constant because of their direct relationship.

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