Electrolux Siegen Gmbh

Volker Muller

Manfred Lorek

Rolf-Dieter Giesler

Eva Haegerstrand

Karl-Gosta Almen

In a method for operating a refrigerating unit including an expeller, condenser, evaporator and absorber, with a solvent circulation, a working substance circulation and a by-gas circulation, the working substance ammonia is expelled from a rich ammonia solution with continuous supply of thermal energy and subsequently is liquefied by heat absorption, is evaporated with absorption of heat from a cooling chamber and is absorbed from the weak ammonia solution, regulation of the thermal energy required for expulsion being effected in dependance on temperature changes with relation to a given temperature of the cooling chamber with the aid of an electronical module using fuzzy logic rules.

Method for operating an absorption refrigeration unit as well as an

Apparatus for removing and disposing of waste of absorption systems comprising a first and a second adapter for providing connection to the refrigerating system to be emptied; a compressor or compressor connection being connected to the first adaptor via a conduit for compressed air and a valve; a first pressure vessel being in connection with the adapters via pressure pipes and relating valves and having an outlet with a valve for the liquid accumulated in the first pressure vessel; a second pressure vessel connected to the first pressure vessel or tank via a pressure pipe and comprising a fresh water supply, a waste air pipe as well as an outlet with a valve, wherein the pressure pipe starting from the top end of the first pressure vessel leads into the lower half of the second pressure vessel; as well as at least one pressure gauge and a pressure-relief valve on one of the pressure vessels.

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Hilchenbach-Allenbach, Germany

Volker Muller