Thermal measuring and testing – Calorimetry – Heat absorbing heigh temperature gas probe
Patent
1989-02-09
1990-06-12
Yasich, Daniel M.
Thermal measuring and testing
Calorimetry
Heat absorbing heigh temperature gas probe
7386104, 374 42, G01K 1712, G01N 2560
Patent
active
049327887
ABSTRACT:
An improved monitoring of the quality and heat value of a flow of condensable vapor. A small side stream of representative vapor sample is tapped from the flow in the vapor main by utilizing the difference between the dynamic pressure of the vapor at a sample intake point and the suction pressure of the vapor at a sample return point. The sample stream passes through a superheater-calorimeter to completely vaporize any liquid entrained in the sample stream and superheat the vaporized sample, and then through a mass flowmeter before being returned to the vapor main. The quality and the heat value of the sample stream are determined by a heat balance around the superheater-calorimeter using correlations relating thermodynamic properties of the vapor to pressures and temperatures. The invention also monitors the enthalpy and the mass-flow rate of said vapor flow.
REFERENCES:
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patent: 3559482 (1971-02-01), Baker et al.
patent: 4210278 (1980-07-01), Obler
patent: 4561785 (1985-12-01), Long et al.
patent: 4618266 (1986-10-01), Feller
patent: 4668102 (1987-05-01), Mott
patent: 4672561 (1987-06-01), Katayama et al.
patent: 4681466 (1987-07-01), Chien et al.
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