SU1244463A1 - Method of heat exchange between two media - Google Patents

Description

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The invention relates to heat engineering and can be used in cooling systems for transport power plants.

The purpose of the invention is to intensify heat transfer. ,

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FIG. 1 shows schematically a heat exchanger for carrying out the proposed heat exchange method; fig 2 is the same, top view.

The heat exchanger contains vertical radially mounted flat channels 1 with external fins 2, the height of which increases in the radial direction from the Center to the periphery of the heat exchanger. In the central part of the heat exchanger, an ejection device 3 is installed that uses the energy of the engine exhaust gas to suck the cooling medium 1, for example, atmospheric air. The heat exchanger has manifolds 4 and 5 for the supply of l of the cooled medium.

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The method of heat exchange between the two media is as follows.

One of the media is moved in the axial direction along smooth channels 1 s.

5 at a constant speed, and another medium in the radial direction from the periphery to the center in the space between the channels 1 with a variable speed increasing in direction to the center from section to section inversely proportional to the distance of these sections from the center. The proposed method of heat exchange between the environments ensures, due to the above law of changing the velocity of the medium flowing in the radial direction between the channels, optimal conditions for heat transfer by the external fins 2, whose height increases in the radial direction from the center to the periphery. There is a promising possibility of developing a heat exchange surface, and there is no need to use a heat exchanger casing.

Editor L. Pchelinska

Compiled by M.Kosorrtov Tehred I.Gaidosh

Order 3903/42

Circulation 589 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production-polygraphic enterprise, Uzhgorod, Projecto st., 4

Proofreader A.Zimokosov

Claims (1)

. METHOD OF HEAT EXCHANGE BETWEEN TWO ENVIRONMENTS by moving one of them in the axial direction along smooth channels with constant speed, and the other medium in the radial direction from the periphery to the center in the space between the channels, characterized in that, in order to intensify heat transfer, the second medium is moved with variable speed, increasing towards the center from section to section inversely proportional to the distance of these sections from the center.