The subject matter of this specification can be embodied in, among other things, a method for time shifting when a cold storage facility is cooled that includes determining a thermal model of a cold storage facility, obtaining an energy cost model that describes a schedule of variable energy costs over a predetermined period of time in the future, determining an operational schedule for at least a portion of a refrigeration system based on the thermal model, the energy cost model, and a maximum allowed temperature, and powering on the portion the refrigeration system based on the operational schedule, cooling, by the powered portion of the refrigeration system to a temperature below the maximum allowed temperature, reducing power usage of the powered portion of the refrigeration system based on the operational schedule, and permitting the facility to be warmed by ambient temperatures toward the maximum allowed temperature.

The subject matter of this specification can be embodied in, among other things, a method for time shifting when a cold storage facility is cooled that includes determining a thermal model of a cold storage facility, obtaining an energy cost model that describes a schedule of variable energy costs over a predetermined period of time in the future, determining an operational schedule for at least a portion of a refrigeration system based on the thermal model, the energy cost model, and a maximum allowed temperature, and powering on the portion the refrigeration system based on the operational schedule, cooling, by the powered portion of the refrigeration system to a temperature below the maximum allowed temperature, reducing power usage of the powered portion of the refrigeration system based on the operational schedule, and permitting the facility to be warmed by ambient temperatures toward the maximum allowed temperature.

An entrance refrigerator having a front surface embedded in a partition partitioning an indoor area and an outdoor area, a front opening formed on a front surface of a cabinet that is exposed to the outdoor area, a side opening formed on a side surface of the cabinet exposed to the indoor area, and a cold air supply assembly provided at a rear of the cabinet.

An entrance refrigerator having a front surface embedded in a partition partitioning an indoor area and an outdoor area, a front opening formed on a front surface of a cabinet that is exposed to the outdoor area, a side opening formed on a side surface of the cabinet exposed to the indoor area, and a cold air supply assembly provided at a rear of the cabinet.

An apparatus for preserving consumable products comprising an inner housing arranged within an outer insulated housing, wherein walls of the inner housing define a compartment for receiving consumable products, said walls comprising an inlet wall for inflow of a heat exchange fluid into the compartment, an opposed outlet wall for outflow of a heat exchange fluid out of the compartment, side walls and a base, the side walls and base adjoining the inlet wall to the outlet wall, wherein the inlet wall and outlet wall each include a series of apertures to accommodate a continuous heat exchange fluid flow through the apparatus such that, in operation, consumable products received in the compartment of the inner housing are immersed in the heat exchange fluid to exchange heat with the heat exchange fluid.

The present disclosure provides a large-scale low-temperature controllable atmospheric boundary layer test system and method for wind and snow simulation. The system includes an atmospheric boundary layer wind tunnel, a plenum chamber and a refrigeration system. The atmospheric boundary layer wind tunnel includes an upper flow channel and a lower flow channel communicating with each other end to end. A power section is arranged in the upper flow channel. A settling chamber, a contraction section and a test section are sequentially arranged in the lower flow channel. Corners of a closed return wind tunnel are respectively provided with a transition section. A fan is disposed in the power section. An air heat exchanger is disposed in the settling chamber. The plenum chamber is divided by a partition into a storage room for storing snow particles and an operation room provided with a snow particle vibratory spreading device. The storage room is located at an upper part of the settling chamber. An air cooler is disposed in the storage room. The operation room is located at an upper part of the test section. The snow particle vibratory spreading device spreads snow particles that uniformly fall into the test section. The refrigeration system outputs a secondary refrigerant for heat exchange for the air cooler in the plenum chamber and the air heat exchanger in the atmospheric boundary layer wind tunnel. According to the present disclosure, the natural snowfall process is simulated through the cooperation of various parts of the system.

The present disclosure provides a large-scale low-temperature controllable atmospheric boundary layer test system and method for wind and snow simulation. The system includes an atmospheric boundary layer wind tunnel, a plenum chamber and a refrigeration system. The atmospheric boundary layer wind tunnel includes an upper flow channel and a lower flow channel communicating with each other end to end. A power section is arranged in the upper flow channel. A settling chamber, a contraction section and a test section are sequentially arranged in the lower flow channel. Corners of a closed return wind tunnel are respectively provided with a transition section. A fan is disposed in the power section. An air heat exchanger is disposed in the settling chamber. The plenum chamber is divided by a partition into a storage room for storing snow particles and an operation room provided with a snow particle vibratory spreading device. The storage room is located at an upper part of the settling chamber. An air cooler is disposed in the storage room. The operation room is located at an upper part of the test section. The snow particle vibratory spreading device spreads snow particles that uniformly fall into the test section. The refrigeration system outputs a secondary refrigerant for heat exchange for the air cooler in the plenum chamber and the air heat exchanger in the atmospheric boundary layer wind tunnel. According to the present disclosure, the natural snowfall process is simulated through the cooperation of various parts of the system.

A shelf is provided which has a placement surface for objects to be treated in the climate cabinet and an underside opposite the placement surface, wherein the shelf can be mounted in a climate chamber of the climate cabinet. At least one reinforcing rib is detachably fastened to a base plate of the shelf.

A shelf is provided which has a placement surface for objects to be treated in the climate cabinet and an underside opposite the placement surface, wherein the shelf can be mounted in a climate chamber of the climate cabinet. At least one reinforcing rib is detachably fastened to a base plate of the shelf.

A positive and negative pressure system and an operation method therefor, and a positive and negative pressure electrical appliance using the positive and negative pressure system. The positive and negative pressure electrical appliance comprises: a positive and negative pressure refrigerator, a positive and negative pressure washing machine, a vacuum dishwasher/fruit and vegetable cleaning machine, a super-oxygenated water washing range hood, a positive and negative pressure oven/fryer/microwave oven, a positive and negative pressure fresh-keeping compartment, a positive and negative pressure fresh-keeping warehouse, and a positive and negative pressure modular cabinet. Regulating airflow with positive and negative pressure, or carrying multiple effective loads such as ozone, an air catalyst, a negative ion, modified atmosphere gas and water for orderly getting in and out of or staying in a positive and negative pressure chamber, and exerting the required effects on objects therein.