Detection of leaks in heat exchangers
AssigneeAccutest International, Ltd
InventorThomas Werner
Life of this patent
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Abstract
A method for the detection of leaks in a heat exchanger having discrete first and second fluid flow paths is disclosed. The method comprising the steps of introducing a contaminant fluid into the first flow path (13) and testing for the presence of the contaminant fluid in the second flow path (14), wherein the pressure in the second flow path (14) is maintained below atmospheric pressure. The pressure in the second flow path may be maintained, for example, at between 0.1 bar (1×104 N/m 2) and 1 bar (1×105 N/m 2) below atmospheric pressure. Apparatus for carrying out the method is also disclosed.
Claims14
A method for the detection of leaks in a heat exchanger having discrete first and second fluid flow paths, the method comprising the steps of introducing a contaminant fluid into said first flow path and testing for the presence of said contaminant fluid in said second flow path, wherein the pressure in said second flow path is maintained below atmospheric pressure.
2-11. (canceled)
Apparatus for detecting leaks in a heat exchanger having discrete first and second fluid flow paths, the apparatus comprising:
- a supply of contaminant fluid;
- means to connect said supply in fluid communication with said first flow path;
- a detector for indicating the presence of said contaminant fluid;
- and means to connect said detector in fluid communication with said second flow path;
- wherein the apparatus further comprises a vacuum pump and means to connect said pump in fluid communication with said second flow path, whereby, in use, a pressure below atmospheric pressure may be applied to said second flow path.
Dependencies are inferred from the claim text.