Heat exchange fluids
AssigneeClearwater, Inc.
InventorsKevin W. Smith, Larry W. Gatlin, John H. Hallman
Life of this patent
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Abstract
Carboxylate salts of amines are used as components of heat exchange fluids. The amines may have a ratio of N to C of 1:0 to 1:12 and the carboxylate anion may be derived from an acid of the formula H(CH2)0-3COOH. A preferred monoamine heat exchange fluid utilizes triethanolamine formate. Lower carboxylate salts of diamines and triamines having the formula R2[N[(CH2)mNR]1-2]R where each R is independently selected from moieties of the formula —CnH2n+1 and moieties of the formula H[O(CH2)1-4]—, each m is independently a number from 1 to 6, and each n is a number from 1 to 4, are disclosed as compounds.
Claims43
Method of transferring heat energy from a first location to a second location comprising absorbing heat energy at said first location into an aqueous solution comprising an amine carboxylate, the amine portion of said amine carboxylate having an atomic ratio of N to C from 1:0 to 1:12 and the carboxylate portion being derived from an acid of the formula H(CH2)0-3COOH, and desorbing said heat energy from said amine carboxylate solution at said second location.
Method of transferring heat through a heat exchange surface comprising absorbing said heat into a solution of triethanolamine formate in contact with said heat exchange surface.
An aqueous heat exchange fluid comprising an amine carboxylate and potassium formate.
An amine carboxylate comprising the reaction product of an amine of the formula R2[N[(CH2)mNR]1-2]R and an acid of the formula H(CH2)0-3COOH where each R is independently selected from moieties of the formula —CnH2n+1 and moieties of the formula H[O(CH2)1-4]—, each m is independently a number from 1 to 6, and each n is a number from 1 to 4.
Dependencies are inferred from the claim text.