Patent ID: 6705111
Filing Date: 2004-03-16
Classification: F04B,F25B,Y02A,Y02B

Abstract:
An aqua-ammonia absorption apparatus comprising an absorber assembly, a generator assembly, an evaporator, a condenser, an ammonia-water absorption fluid having between about 20% and about 60% ammonia, by weight, and an absorption fluid loop for directing absorption fluid between said absorber assembly and said generator assembly, said apparatus characterized by a plunger-driven diaphragm solution pump comprising a reciprocating plunger, an eccentric bearing communicating with said plunger for reciprocally driving said plunger, a diaphragm for pumping absorption fluid in response to reciprocation of said plunger, a hydraulic fluid chamber on one side of said diaphragm and a replenishment valve cooperating therewith for replenishing hydraulic fluid in said chamber and a spring for biasing the plunger against said eccentric bearing, wherein said pump is capable of pumping absorption fluid therein at subatmosphereic pressure.