Method and a device for detecting an abnormality of a heat exchanger and the use of such a device

a technology of abnormality and heat exchanger, which is applied in the direction of material thermal analysis, lighting and heating apparatus, steam/vapor condensers, etc., can solve the problems of reduced heat exchange, insufficient fluid flow, and increased power consumption, so as to reduce the sensibility to fluctuations
US20060032606A1Inactive Publication Date: 2006-02-16DANFOSS AS
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
DANFOSS AS
Publication Date
2006-02-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method and a device for detecting an abnormality of a heat exchanger exchanging heat between a first fluid flow flowing in a conduit and a second fluid flow flowing along a flow path, said conduit and said flow path each having an inlet and an outlet, whereby the method comprises the steps of establishing at least one parameter representative of the temperature conditions of the heat exchanger, establishing a second fluid inlet temperature, establishing a parameter indicative of expected heat exchange between the heat exchanger and the second fluid, processing the heat exchanger temperature, the second fluid temperature and the parameter indicative of expected heat exchange for establishing an estimated second fluid outlet temperature, and employing the estimated second fluid outlet temperature for evaluating the heat exchange between the first and second fluids by comparing the estimated second fluid outlet temperature, or a parameter derived therefrom, with a reference value.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application is entitled to the benefit of and incorporates by reference essential subject matter disclosed in international Patent Application No. PCT / DK2003 / 000701 filed on Oct. 14, 2003 and Danish Patent Application No. PA 2002 01582 filed on Oct. 15, 2002.FIELD OF THE INVENTION

[0002] The present invention relates to a method and a device for detecting an abnormality of a heat exchanger exchanging heat between a first fluid flow flowing in a conduit and a second fluid flow flowing along a flow path, said conduit and said flow path each having an inlet and an outlet, and the use of such a device. BACKGROUND OF THE INVENTION

[0003] Heat exchangers are an important part of many plants and systems, especially refrigeration or heat pump systems. These heat exchangers and their efficiency are of crucial importance in such systems, and it is therefore important to monitor functioning of the heat exchangers to be able to detect abnormal...

Claims

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