Heat exchange device and method

a heat exchange device and heat exchange technology, applied in the direction of heat exchange modification, indirect heat exchangers, lighting and heating apparatus, etc., can solve the problem of less effective cooling, and achieve the effect of improving heat transfer

Inactive Publication Date: 2005-12-15
PRATT & WHITNEY CANADA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0003] One aspect of the present invention provides an improved heat exchange devic

Problems solved by technology

However, small equipment for example may require smaller cooling channels, but the small dimensions of such cooling channels

Method used

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  • Heat exchange device and method
  • Heat exchange device and method

Examples

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Embodiment Construction

[0016] The present invention has application in a wide variety of environments, however the skilled reader will appreciate that, although the invention may be adequately described with reference to a single environment (such as the electric machine described below), application of the invention is by no means limited to the specific example described. The following example is therefore but one of many applications to which the invention may be applied.

[0017]FIG. 1 illustrates a gas turbine engine 90 of a type preferably provided for use in subsonic flight, generally comprising in serial flow communication a fan 92 through which ambient air is propelled, a multistage compressor 94 for pressurizing the air, a combustor 96 in which the compressed air is mixed with fuel and ignited for generating an annular stream of hot combustion gases, and a turbine section 98 for extracting energy from the combustion gases. An accessory gearbox 93 is provided to drive accessories such as oil and fu...

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Abstract

A heat exchange device comprising a fluid flow passage having a plurality of successive segments in fluid flow communication with one another, the segments being adapted to maintain a developing flow therein and thereby improve heat transfer.

Description

TECHNICAL FIELD [0001] The present invention relates generally to a method and device for improving heat transfer. BACKGROUND OF THE ART [0002] Heat exchange devices typically direct a coolant fluid through cooling passages to exchange heat between the surrounding body and the fluid by convective heat transfer. However, small equipment for example may require smaller cooling channels, but the small dimensions of such cooling channels can make cooling less effective, particularly when the cooling fluid is viscous (e.g. oil) and the fluid velocities are low. Therefore, improved heat exchange devices are needed. SUMMARY OF THE INVENTION [0003] One aspect of the present invention provides an improved heat exchange device and a method for improved heat transfer between a body and an adjacent fluid flow. [0004] In accordance with the present invention there is provided a heat exchange device comprising a body defining at least one tortuous passage adapted to direct a heat transfer fluid t...

Claims

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Application Information

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IPC IPC(8): F28F13/00H02K3/24F28F13/06H02K3/22F02C7/32F28F7/00F02C7/268H05K7/20H01L23/46
CPCF02C7/268F02C7/32F28F13/06H02K3/22F28D2021/0026
Inventor BRAND, JOSEPH HORACE
Owner PRATT & WHITNEY CANADA CORP
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