Liquid vapor separation in transcritical refrigerant cycle

a technology of liquid vapor separation and refrigerant cycle, which is applied in the direction of refrigeration components, mechanical equipment, lighting and heating equipment, etc., can solve the problems of transport refrigeration equipment and other problems, and the refrigerant vapor compression system used in connection with the transport refrigeration system is generally subject to stringent operating conditions, vibration and movement, and size restrictions

Inactive Publication Date: 2011-07-21
CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Refrigerant vapor compression systems used in connection with transport refrigeration systems are generally subject to stringent operating conditions due to the wide range of operating load conditions and the wide range of outdoor ambient conditions over which the refrigerant vapor compression system must operate to maintain product within the cargo space at a desired temperature.
Additionally, transport refrigerant vapor compression systems are subject to vibration and movements not experienced by stationary refrigerant ...

Method used

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  • Liquid vapor separation in transcritical refrigerant cycle
  • Liquid vapor separation in transcritical refrigerant cycle
  • Liquid vapor separation in transcritical refrigerant cycle

Examples

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Embodiment Construction

[0015]Referring now to FIGS. 1 and 2, there are depicted therein exemplary embodiments of a refrigerant vapor compression system 100 suitable for use in a transport refrigeration system for refrigerating the air or other gaseous atmosphere within the temperature controlled cargo space 200 of a truck, trailer, container or the like for transporting perishable / frozen goods. The refrigerant vapor compression system 100 is particularly adapted for operation in a transcritical cycle with a low critical temperature refrigerant, such as for example, but not limited to, carbon dioxide. The refrigerant vapor compression system 100 includes a multi-step compression device 20, a refrigerant heat rejecting heat exchanger 40 and a refrigerant heat absorbing heat exchanger 50, also referred to herein as an evaporator, with refrigerant lines 2, 4 and 6 connecting the aforementioned components in refrigerant flow communication in a refrigerant circuit. A primary expansion device 55, such as for exa...

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Abstract

A refrigerant vapor compression system includes a flash tank disposed in the refrigerant circuit intermediate a refrigerant heat rejection heat exchanger and a refrigerant heat absorption heat exchanger. The flash tank has a shell defining an interior volume having an upper chamber, a lower chamber and a middle chamber. A first fluid passage establishes fluid communication between the middle chamber and the upper chamber and a second fluid passage establishing fluid communication between the middle chamber and the lower chamber. An inlet port opens to the middle chamber. A first outlet port opens to the upper chamber and a second outlet port opens to the lower chamber.

Description

FIELD OF THE INVENTION[0001]This invention relates generally to refrigerant vapor compression systems and, more particularly, to improving the separation of a two-phase refrigeration flow into a liquid portion and a vapor portion in a refrigerant vapor compression system having a flash tank economizer and operating in a transcritical cycle.BACKGROUND OF THE INVENTION[0002]Refrigerant vapor compression systems are well known in the art and commonly used in transport refrigeration systems for refrigerating air or other gaseous fluid supplied to a temperature controlled cargo space of a truck, trailer, container or the like for transporting perishable / frozen items by truck, rail, ship or intermodal. Refrigerant vapor compression systems used in connection with transport refrigeration systems are generally subject to stringent operating conditions due to the wide range of operating load conditions and the wide range of outdoor ambient conditions over which the refrigerant vapor compress...

Claims

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Application Information

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IPC IPC(8): F25B1/10F25B1/00F25B43/00
CPCF25B1/10F25B2700/21163F25B43/006F25B2309/061F25B2341/0662F25B2400/0411F25B2400/13F25B2400/23F25B2600/0261F25B2700/1933F25B2700/195F25B2700/2109F25B2700/2113F25B2700/21151F25B9/008F25B31/008F25B41/39
Inventor SCARCELLA, JASONCHEN, YU H.
Owner CARRIER CORP
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