Heat exchange – With alarm – indicator – signal – register – recorder – test or...
Patent
1997-08-12
1999-11-30
Lazarus, Ira S.
Heat exchange
With alarm, indicator, signal, register, recorder, test or...
165 95, F28F 1700
Patent
active
059925051
ABSTRACT:
An apparatus for measuring a fouling resistance and a cleanliness factor of heat-transfer surface and which is capable of continuously and accurately monitoring a build-up degree of deposits on a heat-transfer surface of a heat exchanger includes a fouling sensor having a given length of metal wire wound inside the heat-transfer surface for measuring an average temperature of the heat-transfer surface, a direct current voltage supply member for supplying a voltage to a heating wire of the fouling sensor, an accurate resistance measuring member connected with a temperature measuring metal wire of the fouling sensor for measuring an electrical resistance of the metal wire, an inlet/outlet portion water temperature measuring member for measuring the temperatures of the inlet/outlet portions of the apparatus, a water flow rate measuring member, and a data calculation apparatus for computing a fouling resistance and a cleanliness factor of a heat-transfer surface.
REFERENCES:
patent: 4485449 (1984-11-01), Knauss
patent: 4755533 (1988-07-01), Kaya
patent: 5615733 (1997-04-01), Yang
patent: 5677677 (1997-10-01), Duff
patent: 5713668 (1998-02-01), Lunghofer et al.
Andrew D. Althouse, et al., Modern Refrigeration and Air Conditioning, The Goodheart-Willcox Company, Inc., 1988.
Chandler Lance
Korea Electric Power Corp.
Lazarus Ira S.
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