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Refrigerant Subcooling in a Vehicle HVAC System

a refrigerant and vehicle hvac technology, applied in the field of air conditioning portion of the hvac system, can solve the problems of reducing fuel economy of the vehicle hvac operation, and achieve the effects of increasing the subcooling of the refrigerant, increasing the cooling efficiency of the refrigerant, and operating more efficiently

Inactive Publication Date: 2010-07-22
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]An advantage of an embodiment is that an air conditioning portion of a vehicle HVAC system may operate more efficiently by increasing refrigerant subcooling using cold condensate produced by an evaporator module to provide increased cooling of the refrigerant.

Problems solved by technology

One vehicle operation that reduces fuel economy is air conditioning because it consumes a significant amount of energy when operating.

Method used

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  • Refrigerant Subcooling in a Vehicle HVAC System
  • Refrigerant Subcooling in a Vehicle HVAC System

Examples

Experimental program
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Embodiment Construction

[0008]FIG. 1 illustrates an HVAC system, indicated generally at 22. The HVAC system 22 includes an HVAC module 26 (a portion of which is shown), which includes a blower 28 for forcing air through the HVAC module 26 and an evaporator 30, which receives cooled refrigerant from a refrigerant portion 32 of the HVAC system 22.

[0009]The refrigerant portion 32 of the HVAC system 22 also includes a compressor 36, a refrigerant line 34 that directs refrigerant from the evaporator 30 to the compressor 36, a condenser 40, and a refrigerant line 38 that directs refrigerant from the compressor 36 to the condenser 40. The refrigerant portion 32 also includes a condensate-to-refrigerant heat exchanger 44, a refrigerant line 42 that directs the refrigerant from the condenser 40 to the condensate-to-refrigerant heat exchanger 44, an expansion device 46, a refrigerant line 48 that directs refrigerant from the heat exchanger 44 to the expansion device 46, and a refrigerant line 50 that directs refrige...

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PUM

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Abstract

An HVAC system, and a method of operation, for use in a vehicle is disclosed. The HVAC system may comprise: an evaporator having a drain that receives condensate dripping from the evaporator; a refrigerant compressor that receives a refrigerant from the evaporator and compresses the refrigerant; a condenser that receives the refrigerant from the compressor; and a condensate-to-refrigerant heat exchanger that receives the refrigerant from the condenser and the condensate from the drain, whereby the condensate absorbs heat from the refrigerant as the condensate flows through the condensate-to-refrigerant heat exchanger.

Description

BACKGROUND OF INVENTION[0001]The present invention relates generally to heating, ventilation and air conditioning (HVAC) systems for use in vehicles, and more particularly to the air conditioning portion of the HVAC systems.[0002]There is a significant drive to improve the fuel economy of automotive vehicles. One vehicle operation that reduces fuel economy is air conditioning because it consumes a significant amount of energy when operating. Thus, it is desirable to provide an air conditioning system for a vehicle that operates as efficiently as is practicable while minimizing the cost of the air conditioning system.SUMMARY OF INVENTION[0003]An embodiment contemplates an HVAC system for use in a vehicle comprising: an evaporator having a drain that receives condensate dripping from the evaporator; a refrigerant compressor that receives a refrigerant from the evaporator and compresses the refrigerant; a condenser that receives the refrigerant from the compressor; and a condensate-to-...

Claims

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Application Information

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IPC IPC(8): F25B1/00
CPCB60H1/00342B60H1/3233F25B2339/047F25B40/02F24F13/222B60H1/32331
Inventor WANKHEDE, MUKUND S.MAJOR, GREGORY A.
Owner GM GLOBAL TECH OPERATIONS LLC