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7406839 |
Sub-cooling unit for cooling system and method
A system for cooling a medium includes a line having coolant flowing therein, and a sub-cooling unit in fluid communication with the line. The sub-cooling unit receives a portion of the coolant...
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7365973 |
Cooling system and method
A system for cooling a data center includes a plurality of cooling racks, with each cooling rack including a housing and cooling system components supported by the housing. The system further...
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7353659 |
System and method for controlling an economizer circuit
A control algorithm for controlling an economizer circuit in a chiller system is provided. The control algorithm opens and closes a port valve in the economizer circuit in response to predetermined...
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7299649 |
Vapor injection system
A heat pump includes a first and second heat exchanger, a scroll compressor and a flash tank in fluid communication. The flash tank includes an inlet fluidly coupled to the heat exchangers to...
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7275385 |
Compressor with vapor injection system
A heat pump system includes a first heat exchanger, a second heat exchanger in fluid communication with the first heat exchanger, a scroll compressor in fluid communication with each of the first...
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7257958 |
Multi-temperature cooling system
A refrigeration system has first and second evaporators which may be operated at first and second temperatures. Refrigerant from a lower temperature evaporator may be returned to a compressor...
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7228710 |
Indentation to optimize vapor injection through ports extending through scroll wrap
A scroll compressor is provided with economizer injection ports, which extend through the wrap of one of the scroll members. Preferably the injection ports are formed through a so-called...
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7137270 |
Flash tank for heat pump in heating and cooling modes of operation
A heat pump design with an economizer flash tank provides an efficient way to operate the system in both heating and cooling modes. Various expansion device types can be employed with this design....
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7114349 |
Refrigerant system with common economizer and liquid-suction heat exchanger
A refrigerant system is provided where the functions of an economizer heat exchanger and liquid-suction heat exchanger are combined. The two configurations are disclosed with a single common heat...
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6966193 |
Control of multi-circuit economized system
Multiple refrigerant circuits are operated in parallel, and each has an economizer cycle. One of the two circuits may have a greater capacity than the other. By controlling the two circuits to run...
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6820434 |
Refrigerant compression system with selective subcooling
The compressor of a transport refrigeration system is divided into two sections, with each section having a suction inlet. The refrigerant vapor from the evaporator is passed to one of the suction...
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6718781 |
Refrigeration unit apparatus and method
A method for controlling at least one electronic expansion valve coupled to an economizer in a refrigeration system in order to dynamically control the refrigeration system operating conditions and...
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6615598 |
Scroll machine with liquid injection
A refrigeration circuit includes a scroll compressor, a condenser and an evaporator connected in a closed loop. A liquid injection system takes liquid refrigerant from the refrigerant circuit and...
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