The present invention is directed to a system (100) maintaining chilled temperature in a cold storage (102) comprising: a plurality of coolant layers 104 uniformly placed on the roof of said storage (102); each coolant layer comprising multiple coolant plates (106) stacked in rows and columns; a compressor (110) generating airflow and circulating airflow in a circular pattern from top to bottom in said (storage 102); thereby maintaining temperatures in the range −25° C. to +25° C. in said storage; said plurality of coolant layers (104) being placed in close proximity to said compressor (110) for effectively circulating airflow; a coolant holder frame (108) for uniformly adjusting said multiple coolant plates (106) in said plurality of coolant layers (104), and allowing efficient airflow from top to bottom in said storage (102); base of said storage being provided with, holes (112), throughout for sucking the air circulated by said compressor (110) to improve the circulation of airflow in said storage (102); and said storage (102) being insulated to increase the thermal insulation coefficient to maintain the desired temperature in said storage, thereby freezing said coolant layers.

A casing is provided with a partition portion extending in a vertical direction so as to partition an outdoor space and an accommodation chamber from each other. The partition portion has an opening for providing communication between the outdoor space and the accommodation chamber. An eaves portion is provided above the opening.

A hybrid shellfish cooling system employs both DC and AC cooling units that use both solar power and AC electrical supply as energy sources. As temperature control and uniform temperature distribution in the cooling system are critical factors in reducing vibrio growth on raw oysters and reducing energy consumption, the hybrid shellfish cooling system is equipped with a specially configured divider that optimizes airflow through the cooling system interior cabinet to achieve uniform temperature distribution in six individual internal compartments inside of the cooling system. Test results indicated that an average of 130 min. cooling was required to reach the suggested oyster temperatures of 7.2° C. and meet the cooling time requirement (i.e., 10 h or less). Airflow is further optimized via fan location and airflow direction, whereby a circulation fan located on the lower part of the 12-volt DC section with an air supply from the 12-volt DC section to the 110-volt AC section provides the optimal condition to achieve relatively uniform temperature distribution.

A hybrid shellfish cooling system employs both DC and AC cooling units that use both solar power and AC electrical supply as energy sources. As temperature control and uniform temperature distribution in the cooling system are critical factors in reducing vibrio growth on raw oysters and reducing energy consumption, the hybrid shellfish cooling system is equipped with a specially configured divider that optimizes airflow through the cooling system interior cabinet to achieve uniform temperature distribution in six individual internal compartments inside of the cooling system. Test results indicated that an average of 130 min. cooling was required to reach the suggested oyster temperatures of 7.2° C. and meet the cooling time requirement (i.e., 10 h or less). Airflow is further optimized via fan location and airflow direction, whereby a circulation fan located on the lower part of the 12-volt DC section with an air supply from the 12-volt DC section to the 110-volt AC section provides the optimal condition to achieve relatively uniform temperature distribution.

An environmental control unit for use with a transport container is disclosed. The environmental control unit includes a thermoelectric device, a fan configured to blow air across the thermoelectric device, a cooling module, a controller in electronic communication with the thermoelectric device and the fan, and a communication module in electronic communication with the controller. The communication module is configured to transmit parameters of the environmental control unit to a computing device through wireless communication. The controller is also configured to determine a present location of the transport container, determine a destination of the transport container, evaluate an internal temperature of the transport container, and control an on or off condition of the thermoelectric device based on the present location, the destination, and the internal temperature of the transport container.

Proposed is a refrigerator. According to the refrigerator, a storage space (121) may be defined in a cabinet (100), and a machine room (201) may be arranged under the storage space (121). To implement a cooling system, a compressor (610), a condenser (620), and a heat dissipation fan (611) may be included in the machine room (201). In addition, a control module (700) may be provided in the machine room (201) to face an outlet (225b) of the machine room (201). The control module (700) may be installed at a position close to the entrance of the machine room (201) and may be separated frontward from the machine room (201), and thus accessibility to the control module (700) can be enhanced.

Proposed is a refrigerator. According to the refrigerator, a storage space (121) may be defined in a cabinet (100), and a machine room (201) may be arranged under the storage space (121). To implement a cooling system, a compressor (610), a condenser (620), and a heat dissipation fan (611) may be included in the machine room (201). In addition, a control module (700) may be provided in the machine room (201) to face an outlet (225b) of the machine room (201). The control module (700) may be installed at a position close to the entrance of the machine room (201) and may be separated frontward from the machine room (201), and thus accessibility to the control module (700) can be enhanced.

Proposed is a refrigerator. The refrigerator may include a cabinet (100) having a storage space (121), and a machine room (201) disposed below the storage space (121). The machine room (201) may include a compressor (610), a condenser (620), and a heat dissipation fan (611) to implement a cooling system, and have an inlet (225a) and an outlet (225b) formed on a front surface thereof. In addition, the compressor (610) and the heat dissipation fan (611) are disposed at the rear of the machine room (201), and the compressor (610) may be disposed in a space partitioned from a space in which the condenser (620) is disposed.

Proposed is a refrigerator. The refrigerator may include a cabinet (100) having a storage space (121), and a machine room (201) disposed below the storage space (121). The machine room (201) may include a compressor (610), a condenser (620), and a heat dissipation fan (611) to implement a cooling system, and have an inlet (225a) and an outlet (225b) formed on a front surface thereof. In addition, the compressor (610) and the heat dissipation fan (611) are disposed at the rear of the machine room (201), and the compressor (610) may be disposed in a space partitioned from a space in which the condenser (620) is disposed.

Optimizing distribution of shipping items by receiving distribution data for a first item. The distribution data including a starting location and a destination. The distribution data also including a constraint for shipment with a second item. A time space network mode is created for tracking the first item relative to the constraint for shipment with the second item. An objection function is performed using the time space network model to optimize the distribution data by minimizing the sum of an objective function including a minimized fulfillment penalty and a minimized unmet order penalty. A delivery plan is executed with the distribution data that was optimized.