Browse Prior Art Database

Float Type Boiling Point Sensor

IP.com Disclosure Number: IPCOM000073727D
Original Publication Date: 1971-Jan-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Aakalu, NG: AUTHOR [+2]

Abstract

The device measures the boiling point temperature of liquids. It is especially adapted for use with the low-boiling point cooling fluids presently in use. The floatable housing 10 contains a concentric electric heater 12. The space between the heater 12 and the housing wall is filled with a capillary porous material 14. Axial grooves 16 are located along the upper part of the heater element to provide vapor channels which lead to the vapor space 18 above the heater 12. A temperature sensor 20 (such as a thermocouple) is placed near the exit of the vapor space 18 to measure the temperature of the vapors. The porous capillary material 14 will cause the liquid in which the sensor 20 is floating to rise therein and the heater 12 will generate sufficient heat to cause the liquid to reach its boiling point and vaporize.

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Float Type Boiling Point Sensor

The device measures the boiling point temperature of liquids. It is especially adapted for use with the low-boiling point cooling fluids presently in use. The floatable housing 10 contains a concentric electric heater 12. The space between the heater 12 and the housing wall is filled with a capillary porous material 14. Axial grooves 16 are located along the upper part of the heater element to provide vapor channels which lead to the vapor space 18 above the heater 12. A temperature sensor 20 (such as a thermocouple) is placed near the exit of the vapor space 18 to measure the temperature of the vapors. The porous capillary material 14 will cause the liquid in which the sensor 20 is floating to rise therein and the heater 12 will generate sufficient heat to cause the liquid to reach its boiling point and vaporize. The thermocouple 20 senses the temperature of the vapor which is a positive indication of the temperature of the boiling point. The device can be made to operate at any angle to the gravitational field with the proper choice of the capillary porous material 14. The device can be designed to work in the submerged mode also. The hydraulic resistance of the device under submerged conditions would have to be such that just the right amount of liquid enters the device so that the two-phase mixture leaving at the exit of the device will be saturated and hence the temperature sensor 20 will read the boiling point temperature.

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