Patent ID: 6470702
Filing Date: 2002-10-29
Classification: F23C,F23M,F25B,Y02E

Abstract:
An absorption water heater/chiller comprising:a high temperature regenerator and a low temperature regenerator for heating an absorption solution, which is generated by having an absorbent absorbing a refrigerant, and for evaporating the refrigerant to concentrate the absorption solution; a condenser for condensing a refrigerant vapor generated in the low temperature regenerator at the time of cooling; an evaporator mounting therein a heat transfer tube for circulation of a heating medium and for exchanging heat between a liquid refrigerant generated in said condenser or a vapor refrigerant generated in said high temperature regenerator and with the heating medium in said heat transfer tube; and an absorber communicated with the evaporator and for having the absorption solution, which has concentrated in said high temperature regenerator and said low temperature regenerator, absorbing the refrigerant vapor introduced from said evaporator, and wherein said high temperature regenerator comprises an inner cylinder, an outer cylinder, which covers said inner cylinder, and combustion means mounted to said outer cylinder and for burning a combustible gas in said inner cylinder, and wherein a plurality of first flat tubes, which are lengthy in a flow direction of a combustion gas, are provided in the vicinity of the combustion means, and a plurality of second flat tubes, which are lengthy in the flow direction of the combustion gas, are provided in a downstream side of the first flat tubes in the flow direction of the combustion gas, fins being formed on outer surfaces of said second flat tubes.