SU1097886A1 - Device for transpiration cooling of heat release object - Google Patents

Abstract

1. DEVICE FOR EVAPORATION COOLING OF A HEAT-EXPOSING OBJECT, containing an evaporator in the form of a horizontal pipe with a coaxial insert inside forming an annular cavity with the pipe the separator, the condenser is located above the evaporator, and the separator is adjacent to its lower part and communicated in the upper part by means of a steam line with an annular vapor cavity bodies, and in the lower part by means of a condensate line - with an insert cavity, with the holes in the latter located obliquely to its axis. 2. A device according to claim 1, characterized in that the volume of the separator is equal to the sum of the volumes of the steam line and the annular cavity.

Description

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8 The invention relates to heat engineering and can be used for cooling longitudinal and transverse gliding tubes, as well as for cooling fluidized bed furnace products. A device for evaporative cooling of a heat generating element is known, in which the evaporator is a horizontal heat pipe with a coaxially arranged inner cylindrical insert that is protected on one side and on the other hand communicated with a condenser by means of a pipe. The inner insert is provided with openings located along the upper and lower generatrix 1. The disadvantage of this device is that the vapor phase that is formed moves towards the condensate that, at large heat flows, as well as at a large stretch of the heated portion, can lead to evaporator evaporation. . It is also known a device for evaporative cooling of a heat generating object, comprising an evaporator in the form of a horizontal pipe with a coaxial insert inside, forming an annular cavity with the pipe and having openings evenly spaced along its surface 2. However, when using this device with a large extension of the heated section, the intensity cooling processes are insufficient. The purpose of the invention is to intensify the cooling process. The goal is achieved by the fact that a device for evaporative cooling of a heat-generating object, containing an evaporator in the form of a horizontal pipe with a coaxial insert inside, forming an annular cavity with the pipe and having openings evenly located on its surface, contains a separator, surface, additionally contains a separtor, the condenser is located above the evaporator, and the separator is adjacent to its lower part and communicated in the upper part by means of a steam bath of the duct with the annular cavity of the evaporator, and in the lower part by means of the condensate duct with the cavity of the insert, with the holes in the latter located obliquely to its axis. The volume of the separator is equal to the sum of the volumes of the steam line and the annular cavity. The drawing shows the proposed device. The device comprises an evaporator in the form of a horizontally disposed pipe 1 with a coaxially cylindrical insert 2 on the heat supply section, on the surface of which the holes 3 are evenly spaced. The insert 2 forms an annular cavity with the pipe 1 4. The device is also equipped with a separator 5 and a condenser 6 located above the evaporator. The separator 5 is adjacent to the lower part of the condenser 6 and communicated in the upper part by means of the steam line 7 with the annular cavity 4, and in the lower part by means of the condensate line 8 - with the cavity of the insert 2, and the holes 3 in the latter are inclined to its axis. The volume of the separator 5 is equal to the sum of the volumes of the steam line 7 and the annular cavity 4. Before heating, the condensate line 8, the pipe 1 and partially the steam line 7 are filled with coolant. Separator 5 should be free from heat transfer fluid. At the time of heating, steam accumulates in the annular cavity 4, while the pressure in it increases as compared with the pressure of the liquid, the vapor displaces the liquid, which is discharged through the steam line 7 to the separator 5, where the vapor and liquid are separated. The steam rises into the condenser 6, the liquid and condensate through the condensate pipe 8 enters the cavity of the insert 2 and through the drift 3 enters the annular cavity 4. At a high heat flux density, the vapor-liquid mixture enters the separator 5, partially condenses into the streams of water coming from the holes 3. Moving at high speed and capturing the coolant, the steam sucks the coolant through the holes 3 into the annular cavity 4, cools the surface of the pipe I, and the steam is carried to the separtor 5. At the same time, the higher the heat flux, The vapor-liquid mixture and the higher suction effect of the coolant are moving by the liquid. The proposed device significantly increases the intensity of the cooling process of the heat generating element due to the injection effect arising during the operation of the device.

Claims (2)

1. DEVICE FOR EVAPORATIVE COOLING OF A HEAT-generating object, containing an evaporator in the form of a horizontally arranged pipe with a coaxial insert inside, forming an annular cavity with a pipe and having holes uniformly located on its surface, characterized in that, in order to intensify the cooling process, the device further comprises a separator, a condenser is placed above the evaporator, and the separator is adjacent to its • lower part and communicated in the upper part by means of a steam pipe with an annular cavity of the evaporator, and in the lower part by means of a condensate line - with an insert cavity, the holes in the latter being located obliquely to its axis. 2. The device according to π. 1, characterized in that the volume of the separator is equal to the sum of the volumes of the steam pipe and the annular cavity. SU .... 1097886 <7