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Receiver tank purge in vapor compression cooling system with pumped refrigerant economization

A cooling system and refrigerant technology, applied in the field of cooling systems, can solve problems such as consumption

Active Publication Date: 2014-06-18
VERTIV CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, less than half of the power is consumed by the servers in the data center

Method used

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  • Receiver tank purge in vapor compression cooling system with pumped refrigerant economization
  • Receiver tank purge in vapor compression cooling system with pumped refrigerant economization
  • Receiver tank purge in vapor compression cooling system with pumped refrigerant economization

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Embodiment Construction

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0026] According to aspects of the present disclosure, a cooling system that may include a CRAC includes a DX cooling circuit with a pumped refrigerant economizer and a receiver / surge tank at an outside temperature sufficiently cool Cooling the cooling fluid circulating in the cooling circuit and bypassing the compressor enables the system to operate in pumped refrigerant economizer mode. The cooling fluid may illustratively be a phase change refrigerant having a vapor phase and a liquid phase. A pumped refrigerant economizer may illustratively include a pump that circulates a cooling fluid, illustratively refrigerant in its liquid phase, bypassing a compressor. This cooling system then uses a pump instead of a compressor to pump the refrigerant in its liquid phase when the outside air temperature is low enough to provide heat exchange without compressing the refrigerant...

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PUM

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Abstract

A cooling system includes a cooling circuit having an evaporator, a condenser, a compressor, an expansion device, a liquid pump, and a receiver / surge tank coupled between the condenser and the liquid pump. The cooling system has a direct expansion mode and a pumped refrigerant economizer mode. When the cooling system switches from the direct expansion mode to the pumped refrigerant economizer mode, refrigerant is flushed from the refrigerant / surge tank so that the cooling circuit is overcharged when it begins operating in the pumped refrigerant economizer mode.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 734,416, filed December 7, 2012. The entire disclosure of the above application is incorporated herein by reference. technical field [0003] The present disclosure relates to cooling systems, and more particularly to high efficiency cooling systems. Background technique [0004] This section provides background information related to the present disclosure which is not necessarily prior art. [0005] Cooling systems can be used in many different applications where a fluid is to be cooled. Cooling systems are used to cool gases such as air and liquids such as water. Two common examples are heating, ventilation, air conditioning (HVAC) systems built for "comfort cooling", ie cooling spaces where people live, such as offices, and data center climate control systems. [0006] A data center is a room that includes a collection of electronic equipm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00F25B41/04F25B49/02H05K7/20F25B41/20
CPCF25B49/02F25B23/00F25B45/00F25B2400/0401F25B2400/0415F25B2400/16F25B2400/19F25B2600/13Y02B30/70
Inventor 蒂莫西·J·施拉德尔格雷格·哈吉斯蒂芬·西拉托
Owner VERTIV CORP