SU1223019A1 - Heat exchanging pipe - Google Patents

Description

The invention relates to heat exchangers, in particular to tubular elements of heat exchangers.

The purpose of the invention is heat exchange intepsifikapi.

FIG. 1 is shown before. gagaem heat exchange tube; in fig. 2 - section A-A on phi1 i; on phi 3 is a variant of a ten. y-exchange pipe with two swirlers of one mi, mixed along the pipe axis one relative to another) for a 0.5 Hiara helix; in fig. 4 - section B-B in FIG. 3; in fig. 5 shows a variant of a heat exchange tube with four swirlers.

The tube-shaped tube contains tape-wrench spirals 1 and 2 installed inside, the swirler 2 has the opposite direction of the screw, but not the same) to the swirl 1. The swirlers can be installed in the pipe as without changes | both with respect to the other (Fig. 1) and with the helix (Fig. 3) changing along the axis of the pipe by 0.5 Hiara. Swirls are rigidly connected to the pipe and to each other.

Heat exchange pipe 1) works as follows.

0

A coolant is pipulated through the pipe (a liquid stimpler. Another OMbUiaeT coolant is outside the pipe, which is heated with a heat through the wall with the first heat carrier; ieM. Since there are two belt swirlers 1 and 2 with an opposite helix in the pipe, under the action of the helical surfaces of the swirlers, the circumferential flow of the heat transfer fluid is divided into two turbulent N1leifs, twisted in opposite directions, which break up the peripheral zones of the laminar flow and the boundary layer on the inside the pipe surface along its length and thereby enhances heat transfer. Mixing the swirlers 1 and 2 along the pipe axis one by one on another by 0.5 Hai a helix allows the adjacent turbulent h-loifs to be shifted in phase and increase the hydraulic resistance of the pipe. in the pipe, the () 1) ex tape spiral vortex in the form of two screw holders allows to ensure the greatest intensification of tegite exchange with an allowable increase in the hydraulic coupling.

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FIG.

(lk tavite.t. Kocopd ioii

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TIR W 589IodlichkVNIIPI State Committee K01 (X S. R

for inventions and discoveries

I 1.3035, Moekeva, F 35, Emb., 4/5

Phidiad git “Patent,. Uzhgorod, ud Design. four

FIG. five

Claims (2)

(54 (1. HEAT EXCHANGE PIPE with a tape spiral swirl inside, characterized in that, in order to intensify heat transfer, it contains at least one more tape spiral swirl with the opposite direction of the helix relative to the adjacent one. 2. The pipe in π. 1, characterized in that the swirlers are displaced along the axis of the pipe one relative to the other by 0.5 pitch of the helix.