SU1384909A1 - Heat exchanger - Google Patents

Abstract

The invention allows to simplify the design of the heat exchanger using heat pipes of the same length. Chambers 1 and 2 for hot and cold media are separated by a partition 3, in which a bundle of pipes 4 are arranged, arranged in rows. Zones 5 and 6 of evaporation and condensation of pipes are located on opposite sides of the partition wall with a decrease from a certain row of each pipe to the ratio of the length L of the condensation zone to the length L | evaporation zones. The partition is installed obliquely with respect to the beam axis subject to the following regularity: (L j), (; (1-pА) / (И-пА), where, 08 is 0.16; i is the number of rows of pipes in which L / Ly const; n is the sequence number of a row from a group of rows with a decreasing ratio bk / b. The implementation of a partition inclined to the beam axis ensures efficient operation of heat pipes in the region of lower temperatures of the heating coolant. 1 ill. € (L

Description

Hot

R dy

2 6

OE

oo

four

x o: o

--.- If

Holodnyts

The invention relates to heat engineering and can be used in power plants for various purposes.

The purpose of the invention is to simplify the design when using heat pipes of the same length.

The drawing schematically shows the proposed heat exchanger.

The heat exchanger contains chambers 1 and 2 for hot and cold environments, respectively, separated by a partition 3, and a bundle of heat pipes 4 of the same length arranged in rows, zones 5 and 6 of evaporation and condensation, respectively, are located on opposite sides of the partition 3, which is installed obliquely to the beam axis, with provision for the destruction starting from a certain row. Each tube has 4 ratios of the length LK of the zone. condensation to the length Lc of the evaporation zone in the direction of movement of the hot heat carrier while observing the following law:

j-ljj 1 PA

E7 T + pA where A is 0.08 - 0.16;

"L

1 - the number of pipes in which -

h const;

n is the serial number of yes from

groups of families with descending from

LK wearing g-

w

 Heat pipes are finned, and the frequency of installation of the fins and their thermal conductivity may increase in the direction of movement of hot and cold media.

 .

Yu

15 20

25

thirty

35

The number p yes, starting from which the ratio :: - decreases, is selected from

By

The conditions for the pipes, in which the transmitted heat flux reached a value of 0.8-1.0 from the sound limit, practically did not decrease in the future.

Heat is transferred by heat pipes 4 from chamber 1 to chamber 2. The expansion of the partition 3 inclined to the beam axis ensures efficient operation of heat pipes in the region of low temperatures of the heating coolant,

Claims (1)

Invention Formula A heat exchanger containing two chambers for hot and cold environments separated by a septum and a bundle of heat pipes fixed in it, located in rows, evaporation and condensation zones of which are located on opposite sides of the septum with decreasing length of L for each tube the condensation zone to the length Ly of the evaporation zone, characterized in that, in order to simplify the design with pipes of the same length, the partition is inclined with respect to the beam axis while observing the following regularity:  - ZI} L / i-- L / T + M A 0.8 - O, 16; i is the number of rows of pipes for which L / L Const; p is the serial number of a row of a group of rows with a decreasing relation. ,