Absorption chiller-heater and method for forming initial anticor

Details Absorption chiller-heater and method for forming initial anticor Absorption chiller-heater and method for forming initial anticor

1998-10-22

2000-03-21

Bennett, Henry

Refrigeration

Refrigeration producer

Sorbent type

62112, F25B 4100

Patent

active

06038882&

ABSTRACT:
An object of the present invention is to provide a method for forming an initial anticorrosive film in an absorption chiller-heater, by selecting optimal conditions of absorbent solution, steel material surface and film-forming operation for forming a good initial anticorrosive film. In the process for forming an initial anticorrosion film in an absorption chiller-heater having steel parts and containing an absorbent solution comprising lithium bromide as its main component and containing a lithium molybdate corrosion inhibitor according to the present invention, the main characteristics are that at least part of the steel parts of the absorption chiller-heater contacting with an absorbent solution at a temperature of higher than 100.degree. C. include a bare metal surface having an arithmetic mean surface roughness of not more than 1.0 .mu.m; the absorbent solution supplied comprises lithium bromide as its main component and contains a lithium molybdate corrosion inhibitor dissolved in the solution at a level of 450-750 ppm; and that an initial anticorrosion film forming operation is conducted at a condition such that amount of the lithium molybdate dissolved in the absorbent solution is maintained at not less than 200 ppm.

REFERENCES:
patent: 2755170 (1956-07-01), Stubblefield et al.
patent: 3200604 (1965-08-01), Greeley
patent: 4912934 (1990-04-01), Itoh et al.
patent: 5377494 (1995-01-01), Takagi et al.
patent: 5806337 (1998-09-01), Mabuchi et al.
patent: 5811026 (1998-09-01), Phillips et al.

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