A sub-fab area installation apparatus includes: a vacuum pump configured to evacuate a processing gas from a processing chamber of the semiconductor manufacturing equipment; a cooling unit configured to cool a first circulation liquid used in the processing chamber; a heating unit configured to heat a second circulation liquid used in the processing chamber; and a cooling-liquid line configured to pass a cooling liquid therethrough. The cooling liquid is supplied from a cooling source. The cooling-liquid line includes: a distribution line configured to supply the cooling liquid to the vacuum pump and the cooling unit; and a merging return line configured to merge the cooling liquid that has passed through the vacuum pump and the cooling unit and return the cooling liquid to the cooling source.

A multiple-circuit heating and cooling system includes a first refrigeration circuit having a first condenser and a first evaporator and a second refrigeration circuit having a second condenser and a second evaporator. The first condenser and the second condenser are arranged in a first row split configuration, and the second condenser is downstream of the first condenser relative to a first air flow directed across the second condenser and the first condenser. Additionally, the first evaporator and the second evaporator are arranged in a second row split configuration, and the first evaporator is downstream of the second evaporator relative to a second air flow directed across the first evaporator and the second evaporator.

A trans-critical thermodynamic system includes an expansion device and a separator. The expansion device receives a supercritical fluid containing solutes. The expansion device is operable to expand the supercritical fluid to produce a sub-critical gas by reducing a temperature and/or a pressure of the supercritical fluid. The separator removes the solutes from the sub-critical gas.

A refrigeration appliance, in particular a household refrigeration appliance, includes at least first, second and third storage chambers, and a refrigerant circuit on which the following are connected in series between a pressure connection and a suction connection of a compressor: a condenser, a first expansion valve, a first heat exchanger of the first storage chamber, a second expansion valve, a second heat exchanger of the second storage chamber, a third heat exchanger assigned to the third storage chamber, and a control circuit for controlling operation of the compressor and the expansion valves. The third heat exchanger is connected in series downstream of the second heat exchanger. The control circuit is configured to maintain a higher storage temperature in the third storage chamber than in the second storage chamber. A method for operating the refrigeration appliance and a computer program product are also provided.

A refrigeration appliance, in particular a household refrigeration appliance, includes at least first, second and third storage chambers, and a refrigerant circuit on which the following are connected in series between a pressure connection and a suction connection of a compressor: a condenser, a first expansion valve, a first heat exchanger of the first storage chamber, a second expansion valve, a second heat exchanger of the second storage chamber, a third heat exchanger assigned to the third storage chamber, and a control circuit for controlling operation of the compressor and the expansion valves. The third heat exchanger is connected in series downstream of the second heat exchanger. The control circuit is configured to maintain a higher storage temperature in the third storage chamber than in the second storage chamber. A method for operating the refrigeration appliance and a computer program product are also provided.

The invention relates to a refrigerant for use in a single-stage or auto cascade refrigeration system. The refrigerant comprises a mixture of gasses of at least three different hydrocarbons. The at least three different hydrocarbons include butane (C4H10), ethene (C2H4) and methane (CH4). The mixture of gasses comprises at the most 10% by weight of methane (CH4). The invention also relates to a refrigeration system with methane-containing refrigerant, to a refrigeration cabinet with methane-containing refrigerant and to use of a refrigeration cabinet with such refrigerant.

A cooling and battery cooling mode is performed to release the heat from the refrigerant in a heat releasing unit and an outdoor heat exchanger and to absorb the heat into the refrigerant in a heat absorbing unit and a refrigerant-heat medium heat exchanger, and a heating and battery cooling mode is performed to release the heat from the refrigerant in the heat releasing unit and to absorb the heat into the refrigerant in the outdoor heat exchanger and the in-vehicle device heat exchanger. In a case where the cooling and battery cooling mode is performed, when a temperature of the heat absorbing unit is lower than a target value of the temperature of the heat absorbing unit even though the flowing of the refrigerant into the heat absorbing unit is blocked, the operation mode is moved to the heating and battery cooling mode.

A cooling device comprising a cooling circuit comprising a compressor, which is adapted to compress cooling agent in the cooling circuit during an active cooling mode, wherein the compressed cooling agent contains lubricant oil from the compressor; a condensing unit, which is connected to the compressor by a first fluid line of the cooling circuit; an evaporator, which comprises a top part, a bottom part, and a plurality of evaporating tubes connecting the top part with the bottom part, wherein the top part is connected to the condensing unit by a second fluid line of the cooling circuit, and wherein the bottom part is connected to the compressor by a third fluid line of the cooling circuit.

A cooling device comprising a cooling circuit, is described. The cooling circuit further comprises a compressor adapted to compress cooling agent present in the cooling circuit during an active cooling mode, wherein the compressed cooling agent contains lubricant oil from the compressor; a condensing unit connected to the compressor by a first fluid line of the cooling circuit; and an evaporating unit, which is connected to the condensing unit by a second fluid line of the cooling circuit. The cooling circuit further comprises an expansion device arranged in the second fluid line; and an additional evaporator connected to the evaporating unit by a third fluid line of the cooling circuit, and connected to the compressor by a fourth fluid line of the cooling circuit.

A cooling device comprising a cooling circuit, is described. The cooling circuit further comprises a compressor adapted to compress cooling agent present in the cooling circuit during an active cooling mode, wherein the compressed cooling agent contains lubricant oil from the compressor; a condensing unit connected to the compressor by a first fluid line of the cooling circuit; and an evaporating unit, which is connected to the condensing unit by a second fluid line of the cooling circuit. The cooling circuit further comprises an expansion device arranged in the second fluid line; and an additional evaporator connected to the evaporating unit by a third fluid line of the cooling circuit, and connected to the compressor by a fourth fluid line of the cooling circuit.