Patent ID: 6656381
Filing Date: 2003-12-02
Classification: C09K,F25B,Y02A,Y02B,Y02P

Abstract:
A water vapor absorption cycle cooling and/or heating system comprising an absorber containing a working fluid comprising an aqueous solution of a metal salt comprising lithium bromide, lithium chloride, lithium iodide, or mixtures of two or more thereof, and an effective amount of between 2 and about 50,000 parts per million, by weight, of an aliphatic, cycloaliphatic or aromatic ketone or aldehyde additive having between 5 and 24 carbon atoms for increasing the rate of water vapor sorption of said working fluid, said aliphatic ketone being of the formula R1(C&boxH;O)R2 wherein R1 and R2 are the same or different alkyl and substituted alkyl groups of from 1 to 12 carbon atoms and wherein when R1 is a methyl group the carbon atom of the other alkyl group R2 attached to the carbonyl group is a primary or tertiary carbon atom, and wherein the amount of said metal salt present in said absorber is at least about 40%, by weight, of said working fluid.