Toyota Jidosha Kabushiki Kaisha

Japan Chemical Industries Co.

Mikito Nishii

Hiroyuki Arai

Tsutomu Sakai

Kazuhito Yaeda

Mitsuru Kondo

Satoshi Sugiyama

Masamine Tanikawa

Shigehiko Sato

Hideyuki Tami

Sadayoshi Suzuki

Hisanori Watanabe

Yoshihisa Kurokawa

A coolant comprising a nonaqueous base. A phase change material may be dispersed or a highly heat conductive material may be dispersed or dissolved in the nonaqueous base. A nonaqueous coolant for a fuel cell excellent in heat transfer characteristics is provided as a coolant for fuel cell stacks.

Coolant and cooling system

A coolant composition having anticorrosion properties against both aluminum and magnesium is provided. A coolant composition comprises a melting point depression agent selected from glycols and alcohols as the main component, and it contains a corrosion inhibitor selected from fluorides and a tribasic acid of an organic carboxylic acid or an alkali metal salt thereof.

1,3,5-benzene tricarboxylic acid coolant composition

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.

Coolant, method of enclosing coolant, and cooling system

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Nishikamo-gun, Japan

Mikito Nishii