Abstract: A hybrid absorber is disclosed for a closed absorption cycle apparatus. The hybrid absorber is comprised of a non-adiabatic section plus an adiabatic spray section in that order, with absorbent solution and vapor supplied sequentially to them. The spray section preferably also includes a non-adiabatic spray cooler. Coolant is supplied to the non-adiabatic absorber and the cooler either in parallel or in series, countercurrently to the absorbent.

Abstract: The invention relates to a compact sorption cooling unit, comprising at least one adsorber/desorber unit (1) having a heat exchanger and sorption material, at least one condenser heat exchanger (5), and at least one evaporator heat exchanger (6), wherein these building blocks are located in a common, vacuum-tight metal outer housing, and having connection and coupling elements and pipe ducts for the hydraulic interconnection and operation of the unit. The invention provides a sandwich structure, wherein the at least one adsorber/desorber unit (1) is located in an inner or partial inner housing. The condenser heat exchanger (5) and the evaporator heat exchanger (6) are disposed at a distance from each other, and the inner housing having the adsorber/desorber unit (1) is provided in the intermediate space thereof. The separating surfaces (2) of the inner housing directed toward the condenser heat exchanger (5) and toward the evaporator heat exchanger (6) receive steam valves (8, 9).

Abstract: A subassembly for an adsorption chiller includes an adsorption component that includes a plurality of plates arranged in a stack. Refrigerant passages are defined between refrigerant sides of adjacent pairs of the plates in the stack. An adsorbent material is disposed within the refrigerant passages.

Abstract: The present invention provides an improved control system and method for the absorption refrigeration process. The system includes sensors that measure the absorption process in order to determine if the absorption cycle is continuous. A control unit in communication with the sensors which compares the measured sensor values to predetermined safe limits. When the control unit determines that safe limits have been exceeded, the control unit communicates with actuators adjusting the absorption cycle heat source, ultimately protecting the absorption refrigeration process from damage. Further, the control may reestablish the absorption cycle heat source when predetermined safe operation conditions are detected.

Abstract: An absorptive refrigeration method that employs a refrigerant comprising one or more hydrofluoroolefin or hydrochlorofluoroolefin refrigerants, and an oil selected from the group consisting of a polyalkyene glycol oil, a poly alpha olefin oil, a mineral oil and a polyolester oil.

Abstract: There is constructed a constitution including an exhaust heat fired regenerator constituting a heat source by exhaust heat from external machine generating the exhaust heat, a heat fluid flow path for making a fluid having the exhaust heat constituting the heat source or a fluid recovering the exhaust heat flow to the exhaust heat fired regenerator, flow path open/close device provided at the heat fluid flow path for controlling to make the heat fluid flow to the exhaust heat fired regenerator 1 and cut off the fluid therefrom by opening and closing the exhaust fluid flow path, first regenerator temperature detector for detecting temperature of the exhaust heat fired regenerator, a directly fired regenerator constituting a heat source by combustion heat of a burner, second regenerator temperature detector for detecting temperature of the directly fired regenerator, heat medium temperature detector for detecting temperature of a heat medium cooled or heated by an evaporator and controller for controlling to op

Abstract: An absorption chiller having a protection system for preventing the chilled water in the evaporator tubes from freezing in the event the water flow through the tubes closes down while the machine is running. A sensor in the evaporator heat exchanger is arranged to detect when the water flow through the heat exchanger tubes closes down and signals the machine controller. The controller, in turn, shuts down the machine and opens a valve in a feed line to the evaporator to deliver a high temperature working fluid from another section of the machine to the evaporator to maintain the temperature in the evaporator above that at which the water in the tubes freezes.