Absorption chiller heater and unit-type air conditioning system

An absorption chiller heater comprising:

• a high temperature generator for heating a refrigerant absorbed by a solution to generate refrigerant vapor;
• a low temperature generator for concentrating a solution by use of said refrigerant vapor serving as a heat source so as to generate refrigerant vapor;
• a condenser for condensing the refrigerant vapor generated in said low temperature generator by use of cooling water;
• an evaporator including a conduit for introducing the refrigerant condensed in said condenser and the refrigerant condensed when used as the heat source in said low temperature generator, and a conduit for introducing the high-temperature refrigerant from said high temperature generator, said evaporator effecting heat exchanges of these refrigerants with chilled water and hot water;
• an absorber in which the refrigerants evaporated in said evaporator are absorbed by the solution supplied from said high temperature generator so as to dilute the solution and to return said solution to said high temperature generator;
• means for supplying said chilled water and hot water toward a load;
• and
• load responsive control means for effecting cooling and heating operation control by predicting a load change in dependence upon signals supplied from the load with respect to a room temperature, an air capacity of a fan, and an opening degree of a valve for regulating a flow rate of the chilled water and hot water.