An apparatus comprising: a generator, an evaporator, an absorber and a condenser and which when in use circulates a refrigerant, an inert and an absorbent in a diffusion-absorption cycle, wherein the absorbent and the refrigerant are miscible with each other, the inert is a gas under the working conditions and the inert is not or is sparingly miscible with the absorbent and the refrigerant, the generator and the evaporator are arranged in an electric cabinet separating the generator and evaporator from the surrounding environment, the generator is arranged to receive a heat load from primary electric components in the electric cabinet and to pass the heat load into fluid in the generator for evaporating at least a part of the fluid with the heat load from the primary electric components, the evaporator is arranged to receive a heat load from secondary electric components in the electric cabinet which have a lower operating temperature than the primary electric components and to pass the heat load into fluid in the evaporator for evaporating at least a part of the fluid with the heat load from the secondary electric components, the absorber and the condenser are arranged outside of the electric cabinet and at a higher level than the evaporator to receive fluid from the generator and the evaporator and for dissipating heat from the received fluid to the surrounding environment, the inert is heavier than the refrigerant whereby the inert exiting the absorber flows downwards to the evaporator and the inert exiting the evaporator flows upwards to the absorber, the apparatus is provided with a bubble pump on top of the generator, the bubble pump comprising a plurality of capillary dimensioned channels for receiving fluid from the generator and for providing the absorber and the condenser with fluid from the generator, an upper end of the generator is provided with a manifold and a reservoir to separate vapor and liquid exiting the bubble pump by gravity and to pass weak liquid solution of refrigerant and absorbent to the absorber and almost pure refrigerant vapor to the condenser, the evaporator and condenser are arranged such that liquid refrigerant can flow downwards from the condenser to the evaporator, the evaporator and the absorber are arranged such that inert exiting the absorber can flow downward into the evaporator and a mixture of inert and refrigerant can flow from the evaporator to the absorber through a separate line, and the absorber and the generator are arranged such that rich solution of liquid absorbent and refrigerant can flow downwards from the absorber to the generator. a generator, an evaporator, an absorber and a condenser and which when in use circulates a refrigerant, an inert and an absorbent in a diffusion-absorption cycle, wherein the absorbent and the refrigerant are miscible with each other, the inert is a gas under the working conditions and the inert is not or is sparingly miscible with the absorbent and the refrigerant, the generator and the evaporator are arranged in an electric cabinet separating the generator and evaporator from the surrounding environment, the generator is arranged to receive a heat load from primary electric components in the electric cabinet and to pass the heat load into fluid in the generator for evaporating at least a part of the fluid with the heat load from the primary electric components, the evaporator is arranged to receive a heat load from secondary electric components in the electric cabinet which have a lower operating temperature than the primary electric components and to pass the heat load into fluid in the evaporator for evaporating at least a part of the fluid with the heat load from the secondary electric components, the absorber and the condenser are arranged outside of the electric cabinet and at a higher level than the evaporator to receive fluid from the generator and the evaporator and for dissipating heat from the received fluid to the surrounding environment, the inert is heavier than the refrigerant whereby the inert exiting the absorber flows downwards to the evaporator and the inert exiting the evaporator flows upwards to the absorber, the apparatus is provided with a bubble pump on top of the generator, the bubble pump comprising a plurality of capillary dimensioned channels for receiving fluid from the generator and for providing the absorber and the condenser with fluid from the generator, an upper end of the generator is provided with a manifold and a reservoir to separate vapor and liquid exiting the bubble pump by gravity and to pass weak liquid solution of refrigerant and absorbent to the absorber and almost pure refrigerant vapor to the condenser, the evaporator and condenser are arranged such that liquid refrigerant can flow downwards from the condenser to the evaporator, the evaporator and the absorber are arranged such that inert exiting the absorber can flow downward into the evaporator and a mixture of inert and refrigerant can flow from the evaporator to the absorber through a separate line, and the absorber and the generator are arranged such that rich solution of liquid absorbent and refrigerant can flow downwards from the absorber to the generator.