Abstract:
The present invention relates to a method and a device for cooling a mass of a, for example, meat-, tissue-, vegetable- and/or fruit-containing substance in a container (2), in particular a mixer, blender or mill (3, 4), using liquefied nitrogen (N2) which is supplied in the lower region of the container (2) at a constant working pressure via at least one nozzle. The method according to the invention and the device according to the invention are distinguished in that, during the cooling process and/or in stoppage times, the nitrogen is briefly supplied to the nozzle (7) or, via the latter, into the container (2) by means of at least one pressure pulse which is increased in relation to the working pressure. The pulsed supply of pressurized nitrogen blows blocked and/or iced-up nozzles (7) free again and thus advantageously ensures a more reliable operation of cooling a mass of a substance. The present invention is suitable, in particular, for use in foodstuff technology.
Abstract:
The invention concerns a device for storing a two-phase coolant fluid (4) designed to circulate in a heat transfer circuit (10), comprising: a compartment (2) for storing and regenerating the two-phase coolant fluid; at least an indirect heat exchange means (6) between a refrigerant and the coolant fluid (4); a circulating means (8) to circulate the coolant fluid (4) in the heat transfer circuit (10); a two-phase recycling and cooling circuit for the coolant fluid (4). Said device comprises: another compartment for ice slurry conditioning (20), connected to the heat transfer circuit (10); means for introducing part of the coolant fluid (4), enriched in solid phase, into said other compartment; a drawpoint (24) on the storage and regeneration compartment (2), and means for injecting (26, 28) the coolant fluid in liquid phase, into said other compartment; and a mixing member, co-operating with said other compartment.
Abstract:
A chiller for reducing the temperature of previously eviscerated whole birds and the like, includes a tank having a bird outlet end, a bird inlet end, an inlet end plate, an outlet end plate, and a water reservoir between the ends. The poultry chiller also includes water circulation means for introducing water into the reservoir at the bird outlet end of the tank, draining water at the bird inlet end of the tank, and forming a movement of water generally from the bird outlet end toward the bird inlet end of the tank. The chiller further includes a motive device for urging the birds from the bird inlet end to the bird outlet end of the tank, the motive device being in driven relationship with a power means. A transverse wall having a lower portion, a central portion, and a top edge, is disposed at the bird inlet end of the tank substantially parallel to the inlet end plate such that a sump is formed between the lower portion of the transverse wall and the inlet end plate.
Abstract:
A distributed refrigeration system for a vehicle includes a vapor compression primary cooling circuit and a separate secondary cooling circuit. The secondary cooling circuit utilizes a non-toxic cooling fluid that is pumped to remote locations in the vehicle through designated supply lines. A heat exchanger acting with the primary cooling circuit cools the cooling fluid. A portable main storage compartment is fluidly connectable to the primary or secondary cooling circuits. The portable main cold storage compartment can be expandable. At the remote locations in the vehicle, docking stations permit items to be selectively cooled by the secondary cooling circuit. Both the primary and secondary cooling circuits can operate independently of the vehicle engine.
Abstract:
An apparatus and method which is particularly suitable for maintaining a wafer at an optimum temperature for the alignment and exposure step during photolithography. The apparatus includes a cooling plate having at least one cooling channel. A coolant is continually circulated through the cooling channel to cool the cooling plate and the wafer resting thereon prior to transfer of the wafer to a wafer stage in a stepper, for example. The cooling plate may be mounted on an OF table inside the stepper and include a central opening for receiving the wafer-engaging shaft of the OF table. The cooling plate maintains all regions of the wafer at substantially the same temperature as the wafer stage in the stepper prior to transfer of the wafer to the wafer stage.
Abstract:
A formate salt based heat transfer fluid containing sulfamic acid and/or biocides for a secondary refrigeration loop is disclosed. The formate based heat transfer fluid generally is a more effective heat transfer medium than a glycol based fluid designed to operate in the same temperature range. The formate based fluid also has lower toxicity and environmental risks than the glycol fluid.
Abstract:
A natural and environmentally friendly cooling system is disclosed. The cooling system includes an insulating enclosure, a block of ice within the insulating enclosure, a primary coil of tubing contacting the block of ice and beneath the block of ice for transferring fluid, a return coil of tubing beneath the block of ice for transferring fluid, and a floor pan for collecting water beneath the primary coil and the return coil. The enclosure can include sloped walls to facilitate freezing of water within the enclosure. Alternatively, the block of ice can be delivered via a service.
Abstract:
Provided are an air conditioning plant control method by which an air conditioning plant can be operated in a most desirable state, and an air conditioning plant so controlled. An air conditioning plant is controlled, which has at least one air conditioner, a refrigerating machine supplying cold water to the air conditioner and a cooling tower supplying cooling water to the refrigerating machine. Within an extent satisfying set conditions of air conditioning, setpoints of the draft temperature of the at least one air conditioner, the cold water temperature of the refrigerating machine and the temperature of cooling water from the cooling tower are altered and optimized so as to minimize energy consumption, operating cost or carbon dioxide emission of the air conditioning plant.
Abstract:
A cooling device for cooling a semiconductor element includes at least one cold plate utilizing a copper plate for cooling a semiconductor element, a condenser utilizing a plurality of flat micro-tubes, a refrigerant pump for circulating a refrigerant, and a fan for cooling the condenser. The cold plate, the condenser, and the refrigerant pump are fluid connected to define a refrigerant circulating circuit.
Abstract:
An etching apparatus of the present invention has a processing device having a reaction chamber in which an electrode provided with a built-in refrigerant-circulating path is installed, a refrigerator for cooling the refrigerant at a predetermined temperature and circulating the refrigerant in the refrigerant-circulating path at a predetermined flow rate, a controlling device for controlling the temperature or flow rate of the refrigerant, a status monitor for monitoring an operational status, and a temperature control device for controlling the temperature of the electrode by controlling the temperature or flow rate of the refrigerant on the basis of information about the operational status.