摘要:
The present invention provides a refrigeration system including a first refrigerant circuit including a first heat exchanger for transferring heat from refrigerant, a second refrigerant circuit including a second heat exchanger for transferring heat to refrigerant, and a third refrigerant circuit. The third refrigerant circuit includes a compressor, a condenser connected to the first refrigerant circuit such that heat exchange can occur between the refrigerants of the first and refrigerant circuits, an expansion device, and an evaporator connected to the second refrigerant circuit such that heat exchange can occur between the refrigerant of the second and third refrigerant circuits. The refrigerant can travel along the third refrigerant circuit in a common direction during operation in both heating and cooling modes. Refrigerant can be prevented from moving between first, second, and third refrigerant circuits during operation in heating and cooling modes.
摘要:
The present invention provides a heat exchange system for a vehicle. The heat exchange system can include a first heat exchange circuit supported by the vehicle and fluidly connecting a condenser, a compressor, an evaporator, and an expansion device, a module removably secured to the vehicle, the module housing a pump, and a second heat exchange circuit fluidly connecting a liquid-to-air heat exchanger, the pump, and the evaporator. The first exchange circuit can be operable to condition a first passenger space, and the second heat exchange circuit can be operable to condition a second passenger space spaced apart from the first passenger space.
摘要:
The efficiency of refrigeration systems operating on the vapor compression cycle and employing suction line heat exchangers is increased by introducing refrigerant into the lower pressure side of the suction line heat exchanger at a quality less than 1 and introducing refrigerant that has passed through the low pressure side of the suction line heat exchanger into the compressor inlet at a quality that is equal to 1.
摘要:
A modular cooling system (10) is provided for use in an electronics enclosure (12) mounting a plurality of heat generating electronic components (14). The cooling system (10) includes a cooling liquid supply manifold (16), a cooling liquid return manifold (18), and a plurality of cooling modules (20) that are selectively mountable into the electronic enclosure (12). The cooling system (10) also includes a wall (64) fixed in the enclosure to separate the electronic components (14) from the manifolds (16,18) to shield the electronic components (14) from any of the cooling liquid (52) should it leak from the system (10).
摘要:
An HVAC control system for a passenger compartment of an over the road vehicle comprises a controllable air conditioner for directing cooled air flow through the passenger compartment and a controllable heater for directing heated air flow through the passenger compartment. A battery selectively powers the air conditioner and the heater. A sensor senses battery energy. A control panel includes user input devices for manually selecting operating parameters of the HVAC system and a battery remaining time display. A controller is operatively connected to the air conditioner, the sensor and the user control panel, the controller determining estimated battery remaining time based on battery energy and the manually selected operating parameters, and displaying the estimated battery remaining time on the battery remaining time display.
摘要:
A brazed plate heat exchanger (30) is provided for transferring heat between a first fluid (32) and a second fluid (34), with the first fluid (32) being pressurized to a relatively high pressure. The heat exchanger includes plate pairs (41), with each pair (41) defining a plurality of flow channels (56) for the first fluid (32). Each of the flow channels (56) has a hydraulic diameter less than 1 mm. Reinforcements (62) are provided between each of the plate pairs (41) and are aligned with inlet and outlet openings (46,48) to define inlet and outlet manifolds (50,52) for the first fluid (32).
摘要:
A heat exchanger including inlet and outlet header portions for a refrigerant (such as CO2), serpentine multiport tubes each with a plurality of aligned tube runs, and at least three plate assembly fluid paths. Each plate assembly fluid path includes a pair of spaced plates secured together at their edges to define an enclosed space with a fluid inlet and fluid outlet on opposite sides of the space. One plate of one fluid path is positioned against first aligned tube runs, one plate of a second of the fluid paths is positioned against second aligned tube runs, and a third fluid path is positioned between the first and second aligned tube runs. The plates may be substantially identical to one another.
摘要:
A heat exchanger provides simplicity, compactness, and high efficiency through a construction that includes an elongated tube structure comprising three rows of flattened multiport tubing, with a first row of tubing 30 and a third row of tubing 50 sandwiching a second row of tubing 40. The second row of tubing 40 terminates in opposite ends 42,44 on which are received refrigerant fittings 46 and 48 respectively. The first and third rows of tubing 30, 50 each include a run abutting and in heat exchange relation with the tubing 40. Opposing ends 32, 34 of the tubing 30 extend about refrigerant fittings 46 and 48 and are received in refrigerant fittings 36, 38. The tubing 50 includes parts 52 and 54 extending about the refrigerant fittings 46 and 48 and terminating in opposite ends 56, 58. The ends 56, 58 are also in fluid communication with fittings 36, 38.
摘要:
A heat exchanger module configured for use in a vapor compression based climate control system including a suction line heat exchanger having a plurality of stacked plates configured to accommodate two separate fluid flow paths for heat exchange therebetween. The heat exchanger also includes a first inlet for flow of a high pressure subcooled fluid from a condenser to the module along a first fluid flow path, a first outlet for flow of a low pressure superheated fluid from the module to a compressor along a second fluid flow path, a second outlet for flow of the subcooled fluid from the module to an evaporator along a third fluid flow path, and a second inlet for flow of the low pressure superheated fluid from the evaporator to the module along a fourth fluid flow path. The module also includes a port block with a first conduit for the third fluid flow path and a second conduit for the fourth fluid flow path.
摘要:
A heat exchanger including a suction line for gaseous or two phase refrigerant output from an evaporator and a capillary tube carrying cooled refrigerant to the evaporator. The suction line includes first and second substantially parallel straight cylindrical portions connected in series, with first and second portions of the capillary tube in series and helically wound around the suction line second and first portions, respectively. A valve for bypassing the capillary tube is responsive to a selected pressure differential between the capillary tube inlet and outlet. A U-shaped portion or accumulator connect the suction line first and second portions. An accumulator alternately is between the evaporator and the suction line portion wound by the capillary tube, with a phase separation chamber connected to an accumulator by a vertical pipe. The accumulator includes a discharge opening to return the oil to the system.