G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 3/22 (2006.01) G01M 3/04 (2006.01) F28F 11/00 (2006.01)
Patent
CA 2274614
A method of positively locating the source of leaks in the heat transfer surface area of the plate heat exchanger between separate product and service fluid paths arranged in an intimitate heat exchange relationship is disclosed. The method comprises: circulating a solution through one fluid path of the exchanger, the solution consisting of solvent with appreciable vapor pressure under the chosen test conditions; providing a gas flow across the other fluid path of the exchange surface by means of forced or natural convection; applying a positive pressure differential between solution and gas stream; and detecting visually the location of deposited solutes on or around the other fluid path.
L'invention concerne un procédé permettant de localiser positivement les fuites dans la surface de transfert thermique d'un échangeur de chaleur, entre les trajectoires de fluide de services et de produits normalement séparées disposées de manière à assurer un échange de chaleur. Ce procédé consiste à assurer la circulation d'une solution d'une trajectoire de fluide de l'échangeur, la solution se composant d'un solvant avec une pression de vapeur significative dans les conditions d'essais choisies; à assurer un écoulement de gaz dans l'autre trajectoire de fluide de la surface d'échange au moyen de convection forcée ou naturelle; à appliquer un différentiel de pression positive entre la solution et le courant de gaz; et à détecter visuellement les emplacements des solutés déposés sur ou autour de l'autre trajectoire de fluide.
Dall Stephan
Shaw Jonathan Graham
Apv North America Inc.
Ridout & Maybee Llp
LandOfFree
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