SU920348A1 - Gravitation heat pipe - Google Patents

Description

(5) GRAVITATIONAL HEAT PIPE

one

This invention relates to heat transfer devices.

A gravitational heat pipe is known, containing a sealed enclosure in the form of a closed loop with upward and downward branches, in the first of which there is an evaporation zone, and in the second - a condensation zone, both zones are additionally interconnected by an inclined overflow tube, the upper end of which is connected to the condensation zone of the joint venture.

The disadvantage of this pipe is the relatively low heat transfer capacity when multi-component mixtures are used as heat transfer media. This is because the low- and high-boiling components of the mixture will accumulate in the condensation and evaporation zones, respectively, with the result that the advantages of using multi-component mixtures cannot be fully realized.

The aim of the invention is to increase the heat transfer capacity of a heat pipe when using multi-component blends as a heat carrier.

The goal is achieved by installing a longitudinal partition in the evaporation zone, which forms a pocket closed above the wall of the housing and the overflow tube connected to the upper end of the pocket with its lower end.

In addition, the upper end of the overflow tube is tangential to the body and can be divided.

15 into two branches.

FIG. 1 schematically shows a heat pipe, a section; FIG. 2 shows a section in FIG. one.

Gravity heat pipe

20 . It contains a hermetic body 1 in the form of a closed circuit with upward and downward branches 2 and 3, respectively, in the first of which the evaporation zone K is located, and in the second condensation zone 5. These zones are additionally interconnected by an inclined overflow tube 6. In the evaporation zone C, a longitudinal partition 7 is installed, which forms a pocket 8 closed above the wall of the housing 1 and the overflow tube 6 is connected to the upper part of the pocket 8 by its lower end 8. The upper end of the overflow tube 6 located tangentially to the housing 1 and can be divided into two branches (not shown). The upper part of the body 1 is a steam line, and the lower part is the end, the condensate line.

Heat pipe works as follows.

The coolant in the evaporation zone 4 boils and evaporates, and the steam rushes through the steam line to the condensation zone 5, from where the heat transfer fluid returns to the evaporation zone 4 via the condensate line. The coolant enriched with the high boiling component enters the pocket 8 and, due to the parlift effect, enters the overflow pipe 6 into the condensation zone 5 where it mixes with the condensate stream enriched with the low boiling component, which ensures the equalization of the component concentrations in the heat carrier liquid phase.

Thus, the installation in the evaporation zone of the longitudinal partition, which forms a pocket with the wall of the housing, communicated in the upper part with the overflow tube 6, provides an increase in the heat transfer capacity of the gravitational heat pipe operating on a multi-component coolant.

Claims (2)

1. Gravity heat pipe containing a hermetic case in the form of a closed loop with upward and downward branches, in the first of which there is an evaporation zone, and in. the second is a condensation zone, both of which are additionally interconnected by an inclined overflow tube, the upper end of which is connected to a condensation zone, characterized in that, in order to increase the heat transfer capacity during use as a heat carrier multicomponent mixtures; in the evaporation zone, a longitudinal partition is installed, forming a pocket closed on the top of the body, and The overflow tube is connected to the upper end of the pocket with the lower end. 2. A pipe in accordance with claim 1, wherein the upper end of the overflow pipe is located tangentially to the housing. 3- Trump popp. 1 and 2, characterized in that the upper end of the overflow pipe is divided into two branches. Information sources, taken into account in the examination 1. USSR author's certificate, according to the application N2743289, cl. F 28 D 15/00, 1979.