Patent ID: 6250089
Filing Date: 2001-06-26
Classification: F25B,Y02A,Y02B

Abstract:
A method of producing hot water in a multi-stage absorption system wherein an upper stage containing a generator that is connected to a condenser operates at above atmospheric pressure and a lower stage containing a generator that is connected to a condenser operates at or near atmospheric pressure, the method including the steps of:placing the upper stage condenser in heat transfer relation with the lower stage generator wherein energy from the upper stage refrigerant vapor is used to vaporize refrigerant in said lower stage generator,terminating the flow of solution to and from the upper stage generator,preventing the loss of solution from the lower stage generator and the loss of condensate from the lower stage condenser, andrecirculating condensate from the upper stage condenser back to the upper stage generator, andconnecting a hot water condenser to said lower stage generator so that vapor from said lower stage generator is circulated through said hot water condenser to heat said water.