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Condensate Heat Transfer for Transcritical Carbon Dioxide Refrigeration System

a technology of condensate heat transfer and refrigeration system, which is applied in the field of beverage coolers, can solve the problems of opening additional control and optimization problems of system operation

Inactive Publication Date: 2008-10-23
CARRIER COMML REFRIGERATI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]For advantageous performance, however, the condensate may preferably be exposed to a more downstream section of the heat rejection heat

Problems solved by technology

The major difference between transcritical and conventional operation is that heat rejection in the gas cooler is in the supercritical region because the critical temperature for CO2 is 87.8 F. Consequently, pressure is not solely dependent on temperature and this opens additional control and optimization issues for system operation.

Method used

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  • Condensate Heat Transfer for Transcritical Carbon Dioxide Refrigeration System
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  • Condensate Heat Transfer for Transcritical Carbon Dioxide Refrigeration System

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Embodiment Construction

[0020]FIG. 3 shows a system 100 having a compressor 22, expansion device 26, and heat absorption heat exchanger (evaporator) 28. These may be similar to corresponding components of the systems of FIGS. 1 and 2. For illustration, the control and sensor components are hidden. The gas cooler 102 is split into first and second sections 104 and 106. Along the refrigerant flowpath 66, the first section 104 is upstream of the second section 106. The sections 104 and 106 may be along a common air flowpath to receive a common airflow 108 (e.g., driven by a fan 110) or may be on separate air flowpaths (e.g., driven by separate fans). In the exemplary system, the first section 104 is upstream of the second section 106 with the fan 110 intervening.

[0021]Water condensed from the airflow 36 is collected by a collection system 112. An exemplary system 112 includes a pan 122 to which the water is delivered. A portion of the second section 106 is positioned to be immersed in a water accumulation in ...

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Abstract

A bottle cooler system includes means for using atmospheric water condensate from the evaporator to draw heat from the condenser.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]Benefit is claimed of U.S. Patent Application 60 / 663,912, entitled “CONDENSATE HEAT TRANSFER FOR TRANSCRITICAL CARBON DIOXIDE REFRIGERATION SYSTEM” and filed Mar. 18, 2005. Copending application docket 05-258, entitled HIGH SIDE PRESSURE REGULATION FOR TRANSCRITICAL VAPOR COMPRESSION SYSTEM and filed on even date herewith, discloses prior art and inventive cooler systems. The present application discloses possible modifications to such systems. The disclosures of said applications are incorporated by reference herein as if set forth at length.BACKGROUND OF THE INVENTION[0002]The invention relates to refrigeration. More particularly, the invention relates to beverage coolers.[0003]As a natural and environmentally benign refrigerant, CO2 (R-744) is attracting significant attention. In most air-conditioning operating ranges, CO2 systems operate in transcritical mode. An example of a transcritical vapor compression system utilizing CO2 as wor...

Claims

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Application Information

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IPC IPC(8): F25B1/00
CPCF25B6/04F25B9/008F25B2339/041F25B2339/047F25D19/02F25D21/14F25D23/003F25D31/007F25D2317/0651F25D2317/0661F25D2321/146F25D2321/147F25D2323/00264F25D2323/00271
Inventor VERMA, PARMESHSIENEL, TOBIAS H.HUFF, HANS-JOACHIMCHEN, YU
Owner CARRIER COMML REFRIGERATI