Thermal measuring and testing – Calorimetry – Gain or loss of heat by heat utilizing load in path of heat...
Patent
1987-05-04
1988-08-16
Yasich, Daniel M.
Thermal measuring and testing
Calorimetry
Gain or loss of heat by heat utilizing load in path of heat...
237 67, 73200, G01K 1100, G01N 2520
Patent
active
047640243
ABSTRACT:
A steam trap monitor positioned downstream of a steam trap in a closed steam system includes a first sensor (the combination of a hot finger and thermocouple well) for measuring the energy of condensate and a second sensor (a cold finger) for measuring the total energy of condensate and steam in the line. The hot finger includes one or more thermocouples for detecting condensate level and energy, while the cold finger contains a liquid with a lower boiling temperature than that of water. Vapor pressure from the liquid is used to do work such as displacing a piston or bellows in providing an indication of total energy (steam+condensate) of the system. Processing means coupled to and responsive to outputs from the thermocouple well hot and cold fingers subtracts the condensate energy as measured by the hot finger and thermocouple well from the total energy as measured by the cold finger to provide an indication of the presence of steam downstream from the trap indicating that the steam trap is malfunctioning.
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Article in Plant Engineering, entitled "Checking Steam Trap Operation", File 3580, Feb. 12, 1987, pp. 38-42.
Fisher Robert J.
Glenn Hugh W.
Hightower Judson R.
The United States of America as represented by the United States
Yasich Daniel M.
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