SU1580134A1 - Heat tube - Google Patents

Abstract

The invention relates to heat engineering and can increase the intensity of heat transfer and the heat transfer capacity of heat pipes that reciprocate during operation. The highly conductive particles 7 and the heat transfer fluid 6 move from the evaporation zone 3 to the condensation zone 4 and back in the process of reciprocating the heat pipe. Moreover, the conical bottoms 2 discard solid particles 7 on the inner surface of the heat pipe casing 1, the thermal boundary layer of the heat-transfer fluid 6 is destroyed, heat exchange is intensified and additional heat is transferred by high heat-conducting particles 7. 1 sludge.

Description

The invention relates to heat engineering, namely to reciprocating heat pipes.

The purpose of the invention is the intensification

S heat transfer and increase heat transfer ability.

The drawing shows the design of the proposed heat pipe.

The heat pipe contains a housing ¹ 10 with conical end bottoms 2, the tops of which face the inside of the housing 1, the evaporation zone 3 and the condensation zone 4. The inner cavity 5 of the heat pipe is partially filled with liquid heat carrier 6 and solid highly heat-conducting particles 7. Moreover, the volume 7 is (0.5-1.2) the volume of the liquid heat carrier 6, and the total volume of particles 7 and the liquid 2Q heat carrier 6 (0.2-0 , 33) the volume of the inner cavity 5 of the heat pipe. The amount of heat carrier 6 and particles 7 placed in the inner cavity 5 of the heat pipe is selected from the considerations of providing irrigation of the inner surface of the heat pipe and the maximum heat flux carried by particles 7, while the minimum particle size 7 is selected from the condition of particle ability 7 . sew the boundary thermal layer of the liquid heat carrier 6 in the zones of evaporation 3 and condensation 4, and the maximum size is from the ability to heat and cool during the cycle of the reciprocating movement of the heat pipe.

The heat pipe works as follows. 40

When the heat pipe’s reciprocating movement, the heat transfer fluid 6 and the highly conductive particles 7 also move back and forth from the evaporation zone 3 to the condensation zone 4. In this case, heat and mass transfer is carried out by means of a liquid coolant 6 and high-temperature conductive particles 7 with a simultaneous change in the aggregate state of the coolant 6. During operation, the conical bottoms 2 discard solid particles 7 to the wall of the housing 1, as a result of which the boundary thermal layer of the coolant is intensively destroyed, and heat transfer is intensified and simultaneously additional heat stored in high-temperature particles alone is transferred 7.

The proposed design of the heat pipe allows you to increase the heat transfer ability of heat pipes, making in the process of operation reciprocating.

Claims (1)

Claim A heat pipe with evaporation and condensation zones, comprising a housing partially filled with a liquid heat transfer medium, characterized in that, in order to intensify heat transfer and increase heat transfer ability when it is operating in the longitudinal mode with respect to its axis of oscillation, additionally placed in the body cavity are metallic highly heat-conducting particles, the volume of the latter being 0.5-1.2 volumes of the liquid heat carrier, and the total volume of particles and liquid heat carrier is (0.2-0.33) the volume of the bands the hull, the bottoms of which are conical with the peaks facing the inside of the hull.