Patent ID: 6311504
Filing Date: 2001-11-06
Classification: F25B,Y02A

Abstract:
A method for controlling an absorption heat pump, comprising the step of:controlling a flow rate of a second cooling water supplied to a second absorber in an absorption heat pump, said absorption heat pump comprisinga condenser in which refrigerant vapor supplied from a regenerator is cooled to condense by a first cooling water, said regenerator being provided in a vicinity of said condenser,a first evaporator in which refrigerant liquor supplied from said condenser is heated by heat held in a heat source fluid, so that a refrigerant evaporates from the refrigerant liquor,a second evaporator in which refrigerant liquor supplied from said condenser takes heat away from a fluid to be chilled, so that a refrigerant evaporates from the refrigerant liquor,a first absorber provided in a proximity of said first evaporator, in which refrigerant vapor supplied from said first evaporator is absorbed into an absorbent and returned to said regenerator, the absorbent being supplied from said regenerator after having its refrigerant evaporated and isolated therefrom, a fluid to be heated being supplied through said first absorber, andsaid second absorber provided in a proximity of said second evaporator, in which refrigerant vapor supplied from said second evaporator is absorbed into either a part of the absorbent having absorbed the refrigerant and being returned from said first absorber to said regenerator or a part of the absorbent supplied from said regenerator after having its refrigerant evaporated and isolated therefrom, said second cooling water being supplied through said second absorber,wherein the flow rate of said second cooling water is controlled based on a temperature of a fluid to be chilled taken out of said second evaporator after being chilled by evaporation of the refrigerant.