Boots – shoes – and leggings
Patent
1987-02-13
1988-08-23
Lall, Parshotam S.
Boots, shoes, and leggings
165 111, 236 94, 364550, G06F 1520, G05D 2300
Patent
active
047665530
ABSTRACT:
A performance monitor generates a fouling factor which indicates the level of fouling of a heat exchanger having a heat exchange surface area and through which a heat exchange medium passes having a known specific heat. Temperature transmitters are utilized to obtain values for the input and output temperatures of the heat exchange medium as well as the temperature in the heat exchanger of a heat exchange fluid used to transfer heat to or from the heat exchange medium. Modules are used to generate a value for an actual heat transfer coefficient in the heat exchanger as a function of the temperatures, flow rate and constant parameters such as area and specific heat, for the heat exchanger. The actual heat transfer coefficient is compared with a nominal or original heat transfer coefficient to determine if any deterioration in the coefficients has occurred which reflects the fouling of the heat exchanger. A simple ratio of the nominal to actual heat transfer coefficient is taken as a measure of this fouling factor.
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patent: 4390058 (1983-06-01), Otake et al.
patent: 4463571 (1984-08-01), Wiggs
patent: 4615302 (1986-10-01), Wynnyckyi et al.
patent: 4671952 (1987-06-01), Masse
Kaya Azmi
Keyes, IV Marion A.
Dixon Joseph L.
Lall Parshotam S.
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