SU1224536A1 - Radiator section - Google Patents

Description

one

The invention relates to heat exchangers used for the exchange of thermal energy between dropping liquid and gas or atmospheric air, more specifically to radiators of vehicles and stationary installations, and can be used in energy and transport engineering.

The aim of the invention is to intensify heat exchange by turbulizing the flow of heat transfer fluid.

FIG. 1 shows schematically the described section of the radiator; FIG. 2 - the core of the radiator section; FIG. 3 is a section A-A in FIG. one

in fig. 4 is a section BB in FIG. 1 in FIG. 5 - group of pipes; FIG. 6 is a section along the line BB in FIG. four.

The radiator section contains a bundle of flat-oval pipes 1, consisting of groups 2 with a corridor arrangement of pipes 1 in each of them. The groups are arranged in a chess order. The pipes 1 are ribbed with corrugated ribbons 3, oriented corrugations 4 across the pipes, and the belts 3 in adjacent groups 2 are shifted along the length of the bundle. The section is equipped with the upper 5 and lower 6 tubular boxes. At the side walls of groups 2, flat rods or blind tubes 7 are installed, on which transverse rods 8 are mounted, spaced at a certain distance from each other along the section height. Groups 2 are interconnected by side plates 9 "} attached to tube boxes 5 and 6 and transverse t-bam 8 Side flaps 9 and transverse gigi

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8 have through-holes 10. The & 2 groups can contain from two or more rows of pipes 1.

The radiator section works as follows.

Atmospheric air or gas, which flows in the annular space of a group with a corridor arrangement of rows, weakly swirls and turbulence, as a result of which the aerodynamic resistance in the radiator section decreases. When it passes from one group to another in areas with a staggered arrangement of tubes, the air flow is divided into two parts and it swirls strongly and is turbulized. In the case of a flow of air around the tubes, a new boundary layer is formed on each individual tube, and the heat exchange is much more efficient. At the same time, the boundary layer is destroyed when the flow is cut off from the edges of the ribbon finning, as a result of which, as well as due to the mutual displacement of the corrugated ribbons along the height, the turbulence and turbulization of the air are increased, creating a high heat transfer coefficient.

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To avoid breaking the contact of pipes 1 with corrugated ribbons 3 and. Providing stiffness, the groups are supplied with rods 8 and side panels 9 having through holes 10 to reduce air flow resistance.

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Claims (2)

1. RADIATOR SECTION mainly for vehicles, containing a bundle of finned flat oval tubes, consisting of groups with a corridor arrangement of pipes in each of them and with a checkerboard arrangement of the groups themselves, characterized in that, in order to intensify heat transfer, the fins are made in the form of corrugated ribbons, oriented corrugations across the pipes, and the tape in adjacent groups are offset along the length of the beam. 2. Section pop. 1, characterized in that the pipes in each group are pulled together by transverse rods, and all groups are combined by means of side shields, and the rods and shields have through holes. >