Abstract: Any one of heat medium, hot water, steam, and high-temperature gas generated by solar heat collected in a solar thermal collector (68), and geotherm, or waste heat from co•generation system or other power plant is used as the driving heat source of a multiple-effect absorption chiller (58) of triple effects or more. The multiple-effect absorption chiller includes at least an absorber, an evaporator, a condenser, a solution heat exchanger, and n stages (n?3) of regenerators, and has multiple effects. By constructing in this manner, the invention presents a system of generating chilled water for air-conditioning reduced in the CO2 emission by utilizing solar heat, earth's heat, and waste heat from co•generation system or power plant.

Abstract: In an absorption chiller/absorption chiller-heater wherein a pressure rise preventing means such as a safety valve, rapture disk or breakable plate is disposed in a high temperature regenerator or in the refrigerant vapor piping from the high temperature regenerator, with the discharge opening of the pressure rise preventing means being open to the atmosphere, in order to prevent the pressure rise in the high temperature regenerator, the discharge opening of safety valve is connected to low pressure units such as the low temperature regenerator through pressure relief piping so that, when the safety valve is activated, the refrigerant vapor and absorption solution of the high pressure side will be discharged to low pressure units such as the low temperature regenerator designed so as to generally maintain a vacuum therein during operation.

Abstract: A steam type absorption refrigerator which circulates absorption fluid from an absorber (1), through a low-temperature heat exchanger (3), a low-temperature regenerator (4), a high-temperature heat exchanger (6), a steam heating type high-temperature regenerator (7), the high-temperature heat exchanger (6) and the low-temperature heat exchanger (3) in order, back to the absorber (1) comprising, a fluid concentrating boiler (10) which is disposed between the high-temperature regenerator (7) and the high-temperature heat exchanger (6) concentrating the absorption fluid under heat, and a pump (13) which extracts a part or all of the concentrated absorption fluid from the high-temperature regenerator (7) and feeds it to the fluid concentrating boiler (10), wherein the fluid concentrating boiler is connected to the high-temperature heat exchanger (6) so that the absorption fluid concentrated under heat is returned to the heating side of the high-temperature heat exchanger (6) and is also connected to the high-temp

Abstract: An absorption refrigerator having three or four-stage regenerators connected in series wherein a prescribed ratio of concentrated absorption fluid is fed to the high-temperature regenerator by a part of the concentrated absorption fluid directly returned to the absorber.

Abstract: An absorption refrigerator having three or four-stage regenerators connected in series wherein a prescribed ratio of concentrated absorption fluid is fed to the high-temperature regenerator by a part of the concentrated absorption fluid directly returned to the absorber.

Abstract: In an absorption chiller/absorption chiller-heater wherein a pressure rise preventing means such as a safety valve, rapture disk or breakable plate is disposed in a high temperature regenerator or in the refrigerant vapor piping from the high temperature regenerator, with the discharge opening of the pressure rise preventing means being open to the atmosphere, in order to prevent the pressure rise in the high temperature regenerator, the discharge opening of safety valve is connected to low pressure units such as the low temperature regenerator through pressure relief piping so that, when the safety valve is activated, the refrigerant vapor and absorption solution of the high pressure side will be discharged to low pressure units such as the low temperature regenerator designed so as to generally maintain a vacuum therein during operation.

Abstract: In order to depress a crystallization temperature of an absorbent composition for an absorption refrigeration system without depressing vapor absorption ability, cesium chloride is added to an alkaline solution containing lithium bromide as a main component, in an amount of 0.01 to 15% by weight, based on the weight of an aqueous 64% lithium bromide solution.

Abstract: In an absorption chiller-heater, warm water in the heat exchanger tubes of an evaporator is heated by spraying solution on the surface of the heat exchanger tubes of an evaporator, and the temperature of the solution is lowered at the same time. As a result, using a conventional low temperature solution pump, high temperature water of around 80.degree. C. may be produced without raising the temperature of the solution. Accordingly, it is not necessary to use heat resisting materials for the solution pump, and corrosion of the materials of the apparatus is less likely to occur. At the same time, since the temperature of the parts is lowered, thermal stress of the materials decreases.

Abstract: In a box-shaped main body of a nearly rectangular parallelepiped shaped shell, an absorber, an evaporator, a low temperature regenerator, and a condenser are disposed sequentially in the vertical direction from the bottom, and a refrigerant sump of nearly V or U shape is disposed between the evaporator and absorber. Furthermore, an eliminator is disposed in an oblique direction at the side of the evaporator, and a purging enclosing member is disposed in the absorber, and a flush chamber of double structure is installed between the evaporator and refrigerant sump. This slim low temperature shell, and high temperature regenerator and others are formed into one body forming an element or module, and a plurality of elements are disposed parallel in the lateral direction, or disposed in the lateral direction and stacked up in the vertical direction, thereby forming a large-sized absorption chiller/absorption chiller-heater.