Coolant, method of enclosing coolant, and cooling system

Details Coolant, method of enclosing coolant, and cooling system Coolant, method of enclosing coolant, and cooling system

C - Chemistry, Metallurgy

09

K

C09K 5/10 (2006.01) C23F 11/10 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2382930

A coolant used for cooling down a stack of fuel cells includes: a solution mixture of water and a glycol as base material; and a rust-preventive additive that functions to keep an electric conductivity of the coolant at a low level and to maintain a hydrogen ion exponent of the coolant in a substantially neutral level. The rust-preventive agent includes at least one of an alkaline ethanolamine additive, such as triethanolamine, diethanolamine, or monoethanolamine, and an acidic additive selected among the group consisting of triazole compounds, phosphoric acid compounds, and organophosphoric acid compounds.

L'invention concerne un réfrigérant servant à refroidir un empilement de piles à combustible. Le réfrigérant comprend une base contenant un mélange d'eau et de glycol, et un antirouille qui maintient la conductivité du réfrigérant à un bas niveau et l'exposant de l'ion hydrogène du réfrigérant à environ 7. L'antirouille peut contenir au moins soit un additif alcalin basé sur au moins un composé d'éthanolamine sélectionné dans le groupe constitué par triéthanolamine, diéthanolamine et monoéthanolamine, soit un additif acide sélectionné dans le groupe constitué par des composés de triazole, des composés d'acide phosphorique, et des composés d'acide phosphorique organique.

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