Abstract: An absorption-refrigerator provided with a mechanism for recuperating heat from the exhaust gas, wherein water vapor contained in the exhaust gas is prevented from condensing even during the starting or partial load operation. An absorption-refrigerator, wherein a first and a second heat recovery systems 23, 24 are installed, an absorption liquid bypass pipe 11B for the diluted absorption liquid exited from the cold heat exchanger 9 flows by bypassing a second+heat recovery system 24, a flow control valve 25 is provided in this absorption liquid bypass pipe 11B, and a controller 27 for controlling the open of a flow control valve 25 is provided so that a predetermined temperature (for instance 100° C.) superior to the dew-point temperature of the exhaust gas is detected continuously by a temperature sensor 26.

Abstract: Prevention of the incapability of operation due to crystallization in the absorption solution. When the temperature difference (&Dgr;T) between the temperature of the concentrated absorption solution Tr detected by the temperature sensor (22) and the temperature of crystallization Tc for the concentrated absorption solution at a specified concentration detected by the concentration sensor (21) comes within a prescribed figure, the opening of the heat control valve (20) is decreased by a specified figure, 20% for example. When the concentration of the concentrated absorption solution, which is measured by the concentration sensor (21), exceeds a prescribed figure, 65% for example, the heat supplied to the high temperature regenerator (1) is reduced by decreasing the opening of the heat control valve (20) regardless of the above temperature difference (&Dgr;T).

Abstract: An absorption-refrigerator provided with a mechanism for recuperating heat from the exhaust gas, wherein water vapor contained in the exhaust gas is prevented from condensing even during the starting or partial load operation. An absorption-refrigerator, wherein a first and a second heat recovery systems 23, 24 are installed, an absorption liquid bypass pipe 11B for the diluted absorption liquid exited from the cold heat exchanger 9 flows by bypassing a second+heat recovery system 24, a flow control valve 25 is provided in this absorption liquid bypass pipe 11B, and a controller 27 for controlling the open of a flow control valve 25 is provided so that a predetermined temperature (for instance 100° C.) superior to the dew-point temperature of the exhaust gas is detected continuously by a temperature sensor 26.

Abstract: An absorption refrigerator of excellent thermal efficiency where water vapor contained in the exhaust gas does not condenses even at the starting or during the partial load operation where the temperature elevation is small. A refrigerant drain heat collector 11 allowing the refrigerant liquid condensing by heating the intermediate absorption liquid in the low temperature regenerator 3 and flowing into the condenser 4 to exchange heat with a part of dilute absorption liquid and first and second heat collectors 26, 27 where the exhaust gas discharged from the gas burner 2 and the dilute absorption liquid exchange heat are installed and, at the same time, a absorption liquid pipe (absorption liquid branch pipe) 14 is installed, and a flow control valve 28 is installed in the absorption liquid pipe 14 and, furthermore, a controller 30 is installed in order to control the aperture of the flow control valve 28 so that a temperature sensor 29 continues to detect a predetermined temperature (for instance 100° C.

Abstract: Prevention of the incapability of operation due to crystallization in the absorption solution. When the temperature difference (&Dgr;T) between the temperature of the concentrated absorption solution Tr detected by the temperature sensor (22) and the temperature of crystallization Tc for the concentrated absorption solution at a specified concentration detected by the concentration sensor (21) comes within a prescribed figure, the opening of the heat control valve (20) is decreased by a specified figure, 20% for example. When the concentration of the concentrated absorption solution, which is measured by the concentration sensor (21), exceeds a prescribed figure, 65% for example, the heat supplied to the high temperature regenerator (1) is reduced by decreasing the opening of the heat control valve (20) regardless of the above temperature difference (&Dgr;T).

Abstract: An absorption refrigerator of excellent thermal efficiency where water vapor contained in the exhaust gas does not condenses even at the starting or during the partial load operation where the temperature elevation is small. A refrigerant drain heat collector 11 allowing the refrigerant liquid condensing by heating the intermediate absorption liquid in the low temperature regenerator 3 and flowing into the condenser 4 to exchange heat with a part of dilute absorption liquid and first and second heat collectors 26, 27 where the exhaust gas discharged from the gas burner 2 and the dilute absorption liquid exchange heat are installed and, at the same time, a absorption liquid pipe (absorption liquid branch pipe) 14 is installed, and a flow control valve 28 is installed in the absorption liquid pipe 14 and, furthermore, a controller 30 is installed in order to control the aperture of the flow control valve 28 so that a temperature sensor 29 continues to detect a predetermined temperature (for instance 100° C.

Abstract: An absorption heat pump and controlling methods thereof for utilizing exhaust heat to obtain high- and low-temperature fluids.

Abstract: An absorption type refrigerator capable of reducing the concentration of an absorption solution at the time of a partial load in which a refrigerant solution storage portion 31 and a refrigerant solution discharge portion 33 partitioned by a dam 34 are provided below a heat exchanger 7 in a condenser 3 and a slit 35 is formed in the dam 34 in a vertical direction so that, at the time of a partial load or when the temperature of cold water drops at the time of a partial load, a refrigerant solution in the refrigerant solution storage portion 31 is caused to flow out from the condenser 3 through the slit 35 in the dam 34 to reduce the concentration of the absorption solution.