Abstract:
Facility having a storage unit comprising a housing enclosing a storage volume for receiving goods and/or equipment further comprising an operating system provided with a tempering unit associated with said storage volume for maintaining a defined or set temperature in said storage volume, said operating system being provided with a refrigerant circuit comprising an internal heat exchanger, arranged in said tempering unit, an external heat exchanger as well as a compressor unit for compressing refrigerant, characterized in that said operating system is provided with an engine for driving said compressor unit as an independent power source and said operating system is provided with an electric generator unit mechanically coupled to said engine, said compressor unit and/or said generator unit are driven by said engine independent power source, and said operating system is connected to a local energy supply system of said facility.
Abstract:
A method is provided for managing a flooded start of a compressor in a vapor compression system. Following an initial bump start, a determination is made as to whether working fluid in a liquid state remains in the sump of the compressor. If working fluid in a liquid state remains in the compressor sump, an additional bump start of the compressor is completed, followed by another determination as to whether working fluid in a liquid state still remains in the compressor sump. If working fluid in a liquid state remains in the compressor sump, another bump start of the compressor is initiated and the sequence repeated until no working fluid in the liquid state remains in the compressor sump. A normal start of the compressor may be initiated after determining no working fluid in the liquid state remains in the compressor sump.
Abstract:
A heat exchanger includes an inner tube extending along a central axis, an array of a plurality of heat transfer members mounted to the inner tube, and a plurality of outer tubes disposed radially outward of and in parallel relationship to the inner tube, the inner and outer tubes extending longitudinally to pass through the array of heat transfer members. The heat exchanger is particularly suited for use as an engine exhaust cooler in connection with a transport refrigeration unit, wherein the inner tube defines an internal flow passage through which engine exhaust gas passes, each outer tube defines an internal flow passage through which refrigerant passes, and the plurality of flow passages between adjacent heat transfer members defines an air flow passage. In an embodiment, the heat transfer members may be annular disks having an internal chamber filled with air or other heat transfer working fluid.
Abstract:
A transport refrigeration system includes a diesel engine equipped with a combustion air pressurization device, such as a turbo-charger or a supercharger. The diesel engine powers at least one component associated with the transport refrigeration system, such as a refrigeration compressor or an air-moving device.
Abstract:
A container comprises a chamber for accommodating one or more components whose temperature is to be controlled, and a heat transfer device for receiving heat transfer fluid for controlling the temperature of the chamber. The chamber has a fluid inlet for introducing a second fluid into the chamber and a fluid inlet permitting the second fluid to exit from the chamber. A fluid impeller is provided for causing the second fluid to flow in heat: exchange relationship with the heat transfer device and into the chamber through the fluid inlet to cool one or more components in the chamber. A fluid coupling is provided for coupling the heat transfer device to a fluid temperature conditioning system installed in a vehicle.
Abstract:
A hydraulic power unit for a refrigeration system. According to one aspect of the invention, the power unit is provided for driving the refrigeration system of a truck having an engine for propelling the truck and a power take off from the engine. The refrigeration system has a compressor for compressing a refrigerant and an evaporator which is cooled by the compressed refrigerant. The power unit comprises a pump, a compressor motor, and a hydraulic circuit. The pump is adapted for pumping hydraulic fluid and for connection to the power take off for driving the pump. The compressor motor is adapted for driving the compressor in response to receiving hydraulic fluid from the pump. The hydraulic circuit is adapted for conducting the hydraulic fluid from the pump to the compressor motor and for conducting the hydraulic fluid from the compressor motor back to the pump.