Cooling system

FIELD: heating.

SUBSTANCE: cooling system refers to heat engineering, namely to heat mass exchange, and can be used for cooling of different heat releasing elements by removing heat from them to a cooler of any type by a heat pipe. The cooling system comprises a heat pipe as well as a heat releasing element and a cooler which are installed at the opposite pipe ends and are in thermal contact with the pipe. The heat releasing element and the cooler are set with the shift to the heat pipe centre according to the required heat resistance and transferred heat power of the cooling system.

EFFECT: proposed solution allows for significant decrease of cooling system's heat resistance and increase of the power it transfers due to slight shift of the said elements In a particular application example, provided the heat releasing element and the cooler are shifted by 10% of the heat pipe length, the heat resistance decreased by 22% and the transferred heat power increased from 180 W to 220 W.

3 dwg


The proposed device relates to the field of heat, namely, teplomassoobmena, and can be used for cooling various fuel elements by diversion from them heat through the heat pipe to the cooler of any type.

Known air cooling system (Heat pipe with powder capillary structure and structural elements on their basis for air systems electro Converter equipment and electronic equipment"catalogue of Belarusian Republican NGO powder metallurgy, Minsk.), containing the heat pipe in the form of a cylindrical copper tube with powder capillary and water as a coolant, fuel element in the form of radioelement noise through it an electric current is mounted on the heat conducting plate (theplaystation)that is installed on the heat pipe at one of its ends, and a cooler in the form of a series of plates, soldered perpendicular to the heat pipe at the second end. The disadvantage of this system is the low transmitted heat capacity and large thermal resistance of the cooling system.

Known cooling module selected for the prototype (SUBE TU, date of publication, 15.12.2008, Rosatom), which contains a heat pipe in the form of an aluminium profile with longitudinal to pellarini grooves and ammonia as a coolant, fuel element in the form of a transistor, ustanovlennogo heat pipe on one end, and cooler in the radiator mounted on the other end of the heat pipe and blows cold air through the fan, while the heat-generating element and the heat sink of the cooler are in thermal contact with the heat pipe, as shown on the dimensional drawing SUBI GC.

The disadvantage of the prototype is low transmitted heat capacity and large thermal resistance of the cooling system.

The technical task of the invention is to reduce thermal resistance of the cooling system and increase the maximum transmitted heat capacity.

To solve the technical problems of the design of the cooling system containing a heat pipe and mounted on its opposite ends, in thermal contact with it, the fuel element and the coolant, and fuel element and the coolant are offset to the middle of a heat pipe in accordance with the required thermal resistance of the transmitted and thermal capacity of the cooling system.

The figure 1 shows schematically the cooling system and the brine circuit in the heat pipe.

The figure 2 shows the dependence of thermal resistance of the cooling system R sistdepending on the simultaneous movement of the fuel element and the coolant relative to the respective ends of the heat pipe on the value of Lcm.

The figure 3 shows the dependence of the transmitted thermal capacity of the cooling system RTdepending on the simultaneous movement of the fuel element and the coolant relative to the respective ends of the heat pipe on the value of Lcm.

The cooling system includes a heat pipe 1 and in thermal contact with heat-generating element 2 and the cooler 3, and the heat-generating element 2 is displaced relative to one end of the heat pipe at a distance of LSMTPand the cooler 3 is displaced relative to the second end of the pipe length Lsmahltowards the middle of the heat pipe 1. Inside the heat pipe is located around the perimeter of the capillary channels 4 and in the center of the pipe steam channel 5.

The system works as follows. In the initial state, the fluid in the sealed heat pipe 1 is in a liquid state, completely fills the capillary channel 4 and partially steam channel 5. When heated, the heat-generating element 2, the coolant evaporates in the area of this element and removes the heat from the walls of the heat pipe 1, and through them from the heat-generating element 2, finding the gosia in thermal contact with the heat pipe 1. As a result of this heat-generating element 2 is cooled. After evaporation of the coolant in the form of steam enters the steam channel 5, it is moved to the area of installation of the cooler 3, as shown in figure 1, there is condensed on the cold walls of the heat pipe 1 and is held in the capillary channels 4, moving to the evaporator due to forces of surface tension and pressure difference of vapor in the evaporation zone and the condensation zone of the heat pipe.

thermal resistance of the cooling system contains three components

Rsist=RTV-TT+RTT+RTT-OHL, deg/W,

where RTV-TT- thermal resistance between the heat-generating element and a heat pipe;

RTT- thermal resistance of the heat pipe;

RTT-OHL- thermal resistance between the heat pipe and the cooler.

At the same time

where TTV- the temperature of the fuel element;

TThe OHL- the temperature of the cooler;

PT- thermal power allocated to the fuel element.

Based on the physics of the processes of heat transfer, the amount transferred to the unit of time heat is numerically equal to the heat capacity allocated to the fuel element RTproportion to the speed of circulation of the coolant in the heat pipe. Therefore, clean the Dimo this speed increase, changing the brine circuit to achieve the maximum value of the velocity of circulation, and hence the maximum value of the transferred heat power. The path of circulation of the coolant in the heat pipe, in addition, must pass through the zone of a fuel element (evaporation zone) and the zone of cooler (condensation zone), hinging through the steam channel and the capillary channels of the heat pipe between these elements, and in the intervals between these elements and the corresponding end of the tube. If the gap between the pipe end and the specified element is not present, then the circuit will pass through the corresponding element only partially, the area of thermal contact is reduced, the corresponding thermal resistance RTV-TTor RTT-OHLis growing. In addition, the flow rate of liquid or vapor at the wall of the pipe end equal to zero (stationary wall) and only gradually increases up to the maximum flow rate as the distance from the tube end. This leads to the reduction of the flow velocity in this area, and hence in the whole heat pipe, thus growing RTT, RTV-TT, RTT-OHLand decreases the maximum transmitted heat capacity, which is a consequence of the manifestation of the effect of edge.

To reduce such influence is necessary is to increase the distance designated reversal of flow of fluid from the pipe end. This will increase the average speed of flow of the heat pipe, which will lead to lower RTT, RTV-TT, RTT-OHL,and hence their sum Rsistand growth of the PTand in addition, the flow of coolant will pass through the entire heating surface of the heat pipe of the fuel element and the entire area of the heat from the heat pipe cooler that will lead to the reduction of RTV-TT, RTT-OHLand thermal resistance of the cooling system in General.

In addition, the speed of movement of the liquid coolant under the action of surface tension forces can be reduced by preventing the flow of fluid to the differential pressure of steam in the evaporation zone and the condensation zone. In the proposed system this difference is smaller, since the vapor pressure in the evaporation zone is partially cleared towards the end of the heat pipe and preventing the flow of fluid pressure decreases. In the condensation created the conditions for the passage of steam into the zone between the cooler and the end of the heat pipe, the pressure in the direction of the fluid accelerates its movement through the capillaries in the evaporation zone.

Thus, the displacement of the fuel element and coolant from the ends of the heat pipe to the middle solves both problems of the invention is the reduction of thermal resistance Rsistand the increase of the transferred heat is th power of R T.

Were produced and tested prototypes of the cooling system that contains the following elements:

- heat pipe in the form of an aluminum tube ⌀12.5 mm, length 360 mm capillary in the form of a number of longitudinal grooves along the perimeter of the tube and the coolant in the form of ammonia;

- fuel element - transistor type IRFP150 on teplonositeli in the form of copper plates;

- cooler in the radiator with blowing his fans.

The cooling system is tested with different values of LSMTPand Lsmahlfrom zero to values at which the change in thermal resistance Rsistand the increase of the transferred heat power PTwith further increase in LSMTPor Lsmahlno longer evident. Zero offsets are consistent with the system prototype, the rest of the cooling system. The maximum value of the achieved effect is obtained when installing the fuel element at a distance of LSMTP=40 mm and cooler at a distance of Lsmahl=40 mm, as can be seen from the graphs of figure 2 and figure 3. It is established that for a particular refrigeration system at a fixed temperature difference between the fuel element and the coolant is equal to 18.5°, thermal resistance of the cooling system Rsistcan be reduced to 1.22 times, 0,103 deg/W to 0,084 deg/watt transmitted heat capacity of P Tcan be increased from 180 watts to 220 watts, that is 1.22 times. Specific values of LSMTPand Lsmahlare selected based on the required values of Rsistand PTand design requirements to the elements of the cooling system, such as total length and configuration of the heat pipe and other

Cooling system containing a heat pipe and mounted on its opposite ends, in thermal contact with it, the fuel element and the coolant, characterized in that the fuel element and the coolant are offset to the middle of a heat pipe in accordance with the required thermal resistance of the transmitted and thermal capacity of the cooling system.


Same patents:

Condenser // 2505768

FIELD: power industry.

SUBSTANCE: condenser uses heat exchange tubes made from heat-resistant and heat-insulating material as a waste steam cooling device; thermobatteries, the cold junctions of which face inside the tube and the hot ones face the outer side, are mounted in the above heat exchange tubes. Hot air from inter-tube space of the condenser is used for heating of rooms during winter time.

EFFECT: simpler design.

2 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to spacecraft thermal-control equipment. Proposed system comprises two two-chamber fluid thermal boards 22 to support the equipment. Said thermal boards are mounted at manned compartment 1. External heat sink 12 is composed of four diametrically opposite heat exchange panels 14. Panel 14 is furnished with heat pipe with condenser 15 arranged inside panel 14 and evaporator 19 integrated with self-contained heat transfer element 16 mounted at spacecraft outer surface nearby panel 14. Element 16 comprises two one-chamber fluid thermal boards 18. Evaporator 19 is furnished with steam temperature regulator 17 to shut off or open heat pipe circuit depending upon set temperature. Thermal boards 22 are hydraulically communicated by circuits 13, 21 with appropriate one-way fluid thermal boards 18 of elements 16 to make one-phase working body line. Every circuit 13, 21 comprises electrically driven pump 3, drain-fill valves 5, hydropneumatic accumulator 8, pressure and flow rate gages 4, 7, 10, flow rate controller 11 and electric heaters 23. Every circuit 13, 21 has working body temperature transducers 20. Replaceable elements of said circuits are connected in main lines via hydraulic joints. Main lines are fitted in manned comportment 1 via sealed lead-ins 6. Heat control system comprises also the two-chamber gas-fluid heat exchanger 24 with two replaceable fans included into both circuits 13, 21.

EFFECT: expanded application range, higher reliability and reparability.

1 dwg

FIELD: heating.

SUBSTANCE: noiseless heat-pipe cooling system includes a heat source, a closed flat heat-pipe evaporator and a condenser, which are equipped with steam and liquids branch pipes connected to each other via a steam line and a condensate line. Inner surface of the bottom of the evaporator is covered with a wick. Outer surface of the evaporator housing opposite a heat source is covered with zigzag-shaped ribs, and inner surface is covered with a grid from porous material. The grid is connected at its ends to a wick-header adjacent to the inner surface of its side end faces and lower end face, which is connected through a condensate inlet branch pipe to a transport wick arranged in a condensate line. A capillary heat-pipe condenser-cooler represents a flat rectangular housing with longitudinal vertical through air slots, which is equipped with condensate inlet and outlet branch pipes arranged in its opposite end faces. The condenser is separated on inner side with a vertical partition wall with vertical slots, which is adjacent to end partition walls of air slots into a steam header and a working chamber. Inner surface of lower wall of the housing of the heat-pipe condenser-cooler is coated with a wick layer on which in the working chamber in cavities between side vertical walls of two adjacent air slots there arranged are condensation and cooling sections. Each of the sections consists of two vertical partition walls, between which a vertical distributing steam channel is arranged, which is interconnected with the steam header through a vertical slot. Vertical chambers of residual condensation are located between side vertical walls of two adjacent air slots and two above said vertical partition walls. Each vertical partition wall consists of several vertical perforated plates arranged with a gap relative to each other and covered with a layer of hydrophilic material or made from it, the holes in which are made in the form of horizontal conical capillaries. Capillaries are located so that small holes of conical capillaries of the previous plate are located opposite large holes of conical capillaries of the next plate. Plates of vertical partition walls with large holes of conical capillaries face the cavity of each steam chamber, and plates of vertical partition walls with small holes of conical capillaries face the cavity of each chamber of residual condensation. Inner surface of side vertical walls of vertical chambers of residual condensation is covered with a grid from porous material. All gaskets from porous hydrophilic material and grids from porous material are connected to a wick layer that in its turn is connected through the condensate outlet branch pipe to the transport wick of the condensate line.

EFFECT: invention allows improving reliability and efficiency of a noiseless heat-pipe cooling system.

10 dwg

FIELD: heating.

SUBSTANCE: heating radiator from a heat pipe arranged so that a working substance evaporation zone is in a pipe plugged at one side in the lower part of the pipe, and the entire pipe is in coolant, and a condensation zone is at least between two shaped metal sheets, besides, in the section such connection of sheets may look like an ellipse in case of two sheets, as a triangle in case of three sheets, as a parallelogram in case of four sheets, as a star in case of 10 and more sheets, and the condensation zone is arranged higher than the evaporation zone.

EFFECT: simplification, cost reduction and convenience of radiation structure installation.

5 dwg

FIELD: instrument making.

SUBSTANCE: proposed device comprises evaporator in contact with heat generator, two condensers in contact with heat-controlled hardware and radiator, respectively, steam line, condensate line, and three-way valve with bellows. In compliance with first version, device additionally incorporates bypass line while condensers are connected in series. In compliance with second version, said condensers are connected in parallel. In both versions, device is equipped with sensor composed of capillary tube partially gilled with two-phase heat carrier. One end of said tube is connected with bellows while opposite end, tightly closed one, stay in contact with heat-controlled hardware.

EFFECT: adjusted heating of equipment, higher accuracy of adjustment.

6 cl, 4 dwg

FIELD: power engineering.

SUBSTANCE: heat exchange device comprising a lower part - a heating and evaporation zone and an upper part - a cooling and condensation zone, a body with heat-insulated walls and nozzles for supply and drain of a heated solution, comprises a longitudinally ribbed pipe located in a mixing chamber of a furnace, at the same time the ribbed pipe exiting the furnace goes into a shell and tube heat exchanger, which comprises a body, three pipes exiting from the ribbed pipe at the angle of 15 degrees, changing into horizontal pipes, at each end of which there is a socket, and seven tubes of identical diametre exit from the each socket, besides, body walls are heat-insulated with a heat insulation material, for instance, penofol, and the body comprises three nozzles for supply and drain of the heated solution and a nozzle for emptying a reservoir, at the same time the device is equipped with a pressure gauge, a safety valve and a tap for coolant filling and has a line of excessive pressure compensation for coolant filling with the device on, which is equipped with a valve, besides, in the device there is a reverse line of the circulating circuit and an expander with a nozzle.

EFFECT: invention increases efficiency, reliability and effectiveness of device operation.

4 dwg

FIELD: engines and pumps.

SUBSTANCE: external combustion engine includes sealed housing in the form of flattened cone, which is partially filled with heat carrier. Housing includes evaporator and condenser. The housing includes heat-insulating ring being the element of the housing and rigidly attached both to evaporative section, and to condensation section of the engine housing. Turbine impellers with moving blades enclosed with a rim are rigidly attached to heat-insulating ring. Turbine impellers are rigidly attached to engine shaft. Turbine wheels with guide vanes enclosed with the rim representing an internal annular magnet are installed on the shaft. Rims of all wheels are installed so that an annular gap with housing is formed. Wheels with guide vanes are installed with possibility of being rotated in relation to the shaft - on bearings. External annular magnet rigidly attached to the housing is installed above internal annular magnet. Propeller is rigidly fixed on the engine shaft. The condenser includes bars, on which there rigidly fixed are cone-shaped plates of wave-like profile both on internal, and external sides of the housing. Combustion chamber with injectors is located around evaporator.

EFFECT: reducing mass and dimensions characteristics of the engine; enlarging its functional capabilities.

3 cl, 6 dwg

FIELD: power industry.

SUBSTANCE: method of heat pipe quality control is proposed using non-contact optic heat supply and temperature measurement methods, as well as digital methods of processing of the recorded brightness contrast of heat field. At that, quality of heat pipe is determined as per value of asymmetry coefficient of isothermic surface relative to heat supply zone, and defect zone is determined as per distortion of shape of isothermic lines.

EFFECT: improving informativity and reliability of heat pipe quality control; reducing the time required for test performance.

2 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to has phase catalytic process equipment to be used in chemical, petrochemical and other industries exploiting gas phase catalytic reactions. Reactor comprises housing with reactor gas feed branch pipe and reaction product discharge branch pipe, heat pipe and pipes filled with catalyst. Heat pipe is formed by wall and housing first and second bottoms. Space between housing and first bottom is communicated with reactor gas feed branch pipe while that between housing and second bottom communicates with reactor product discharge branch pipe. Tubes filled with catalyst extend inside heat pipe. Note here that ends of tubes with catalyst extend beyond heat pipe limits. Heat feed to heat pipe and removed therefrom via housing.

EFFECT: uniform feed of heat, simplified heat feed and removal.

16 cl, 2 dwg

Heat pipe // 2450229

FIELD: power engineering.

SUBSTANCE: in a heat pipe comprising a body with a polished inner surface, a system of capillary channels is made in the form of a plate perforated with holes, having width of more than the length of the vessel opening diametre, and the plate is installed in the body, in the section across the body length, in a crescent-shaped form, besides, ends of the plate tightly adjoin the body walls and have an angle between the body wall and the plate up to 1 degree, and the body has at one end a plug as permanently connected, and at the other side of the body there is a valve in the form of a helical pair to pour liquid containing the following mixture: ether - 20%, industrial ethyl alcohol - 60%, acetone - 20%.

EFFECT: development of a heat pipe with minimum quantity of parts and maximum even heating along the entire surface of the pipe.

2 dwg

Microcooling device // 2247912

FIELD: cooling equipment, particularly heat exchange apparatuses.

SUBSTANCE: device to remove heat from heat-generation component includes coolant stored in liquid coolant storage part, heat absorbing part including at least one the first microchannel and installed near heat-generation component. Heat absorbing part communicates with storage part. Liquid coolant partly fills microchannel due to surface tension force and evaporates into above microchannel with gaseous coolant generation during absorbing heat from heat generation component. Device has coolant condensing part including at least one the second microchannel connected to above coolant storage part separately from the first microchannel, gaseous coolant movement part located near heat-absorbing part and condensing part and used for gaseous coolant movement from the first microchannel to the second one. Device has case in which at least heat-absorbing part is placed and heat-insulation part adjoining heat absorbing part to prevent heat absorbed by above part from migration to another device parts.

EFFECT: reduced size, increased refrigeration capacity, prevention of gravity and equipment position influence on device operation.

22 cl, 4 dwg

Heat pipe // 2254533

FIELD: heat power engineering.

SUBSTANCE: heat pipe comprises vertical housing with evaporation and condensation zones and partially filled with heat-transfer agent and coaxial hollow insert in the evaporation zone which defines a ring space with the housing and is provided with outer fining. An additional hollow cylindrical insert of variable radius made of a non-heat-conducting material is interposed between the condensation zone and coaxial hollow insert. The outer side of the additional insert and inner side of the housing of the heat pipe define a closed space.

EFFECT: reduced metal consumption.

1 dwg

Heat exchanger // 2255284

FIELD: heat power engineering.

SUBSTANCE: heat exchanger comprises housing separated into chambers of evaporation and condensation with a baffle provided with heat pipes which are arranged in both of the chambers. The zones of evaporation of the pipes are positioned inside the evaporation chamber, and zones of the condensation of the pipes are positioned inside the condensation chamber. The heat pipes inside the evaporation chamber are made of wound pipes of oval cross-section. The zones of condensation of heat pipes are also made of wound pipes of oval cross-section .

EFFECT: enhanced efficiency.

1 cl, 6 dwg

Heat pipe // 2256862

FIELD: heating engineering.

SUBSTANCE: heat pipe can be used for heat transmission and temperature control procedures. Heat pipe has evaporator provided with capillary-porous nozzle and capacitor. Evaporator and nozzle are connected by vapor line and condensate pipeline. Nozzle is made of electric-insulating material, for example, of ceramics. Grid-shaped electrode is mounted at the inner side of nozzle. The electrode is connected with rod electrode, which is mounted inside airtight isolator at edge part of evaporator.

EFFECT: improved heat power; prolonged length of heat pipe.

1 dwg

Thermosiphon // 2261405

FIELD: heat-power engineering; utilization of low-potential heat, heat of soil inclusive.

SUBSTANCE: proposed thermosiphon includes heat pump with thermosiphon containing working medium capable of changing its liquid state to gaseous state and vice versa; it includes evaporation and condensation parts; thermosiphon is provided with hermetic thermal tube whose working medium is capable of changing its liquid state to gaseous state and vice versa; it also has evaporation and condensation parts; condensation part of thermal tube bounds cavity of heat pump evaporator together with outer housing, cover and lower platform; said cavity is provided with branch pipes for delivery of liquid phase of heat pump working medium and discharge of gaseous phase of heat pump working medium in such way that condensation part of thermal tube forms inner housing of heat pump evaporator; mounted in between of outer and inner housings of heat pump evaporator is intermediate housing which is provided with holes in lower part for passage of liquid or gaseous phase of heat pump working medium circulating inside its evaporator; tubes-nozzles mounted between inner and intermediate housings are directed vertically upward for admitting liquid phase of heat pump working medium under pressure; heat pump evaporator has inner surfaces. Besides that, outer, inner and intermediate housings of heat pump evaporator are taper in shape and are so located that have common vertical axis of symmetry; inner surfaces of heat pump evaporator and inner housing are finned.

EFFECT: considerable reduction of thermal head between soil and working medium in heat pump evaporator; reduced overall dimensions; possibility of utilization of energy of compressed liquid fed from heat pump condenser to evaporator.

3 cl, 2 dwg

FIELD: heat transfer equipment, particularly to carry heat for long distances, for instance refrigerators.

SUBSTANCE: heat-exchanging system comprises closed loop including main heat-exchanging channel, heat carrier agent pumping device, additional heat-exchanging channel and heat-carrier supply channel connecting the main and additional heat-exchanging channels. Heat carrier agent pumping device may withdraw heat carrier agent in vapor or vapor-and-liquid state from one heat-exchanging channel and supply above vapor or vapor-and-liquid heat carrier agent under elevated pressure into another heat-exchanging channel. Heat carrier agent supply channel is formed as channel with capillary partition closing the channel. During heat-exchanging system operation the capillary partition obstructs vapor penetration or vapor-and-liquid flow. The vapor penetration obstruction is defined by cooperation between meniscuses and inner surfaces of capillary channels formed in the partition. The vapor-and-liquid flow obstruction is defined by bubble meniscuses cooperation with inner surfaces of capillary channels of the partition. The heat carrier agent pumping device may withdraw vapor or vapor-and-liquid heat carrier agent from any heat-exchanging channel and pump above heat carrier agent under elevated pressure in another heat-exchanging channel.

EFFECT: increased efficiency of heat-exchanging system.

14 dwg, 18 cl

FIELD: applicable for heat abstraction in various media.

SUBSTANCE: the heat transferring device has a sealed pipe with condensation and evaporation zones filled up with a heat-transfer agent with pockets provided on the inner surface, the pockets used for inhibition of draining condensate are located in the evaporation zone and made annular or formed by the sections of the helical surface adjoining the pipe inner wall with its lower edge at an acute angle, which are separated from one another by radial partitions, the annular pocket is formed by the side surface of the truncated cone, adjoining the inner wall of the mentioned pipe with the larger base. Besides, at least some of the pockets located one above other are positioned at such a distance that a capillary effect occurs between the surfaces facing one the other.

EFFECT: enhanced efficiency of heat transfer due to the increase of the pipe surface wettable by the heat-transfer agent, as well as simplified structure an facilitated actuation of the device.

3 cl, 7 dwg

FIELD: chemical and oil industry.

SUBSTANCE: reactor comprises housing, means for supplying initial components and discharging finished product, unit for heating and cooling made of a number of heat pipes, additional catalyzer applied on the heat pipes and/or housing and made of a coating. The heat pipes are staggered in the space of the housing. The total area of the surface of the heat pipes in the catalytic zone should provide heating and cooling the catalytic zone.

EFFECT: enhanced efficiency.

5 cl, 1 dwg

FIELD: electric mechanical engineering, possible use for cooling electric generators and electric engines.

SUBSTANCE: in proposed system for cooling electric machines, containing compressed air source with force pipeline, splitting vortex pipe, having as a result of energy division to hollows - hot one and cold one, thermal pipe made inside the hollow shaft of electric machine, as a special feature, along axis of hollow shaft a tubular channel is made for passage of cold flow from splitting vortex pipe, and space, formed by external surface of tubular channel and internal surface of hollow shaft is thermal pipe, condensation area of which - external surface of tubular channel, and evaporation area - internal surface of hollow shaft.

EFFECT: efficient and even cooling of electric machine, simplified construction, increased manufacturability.

2 dwg

FIELD: control of temperature of spacecraft and their components.

SUBSTANCE: proposed method includes measurement of temperatures in spacecraft temperature control zones, comparison of these temperatures with high and low permissible magnitudes and delivery of heat to said zones at low limits. Heat is delivered by conversion of electrical energy into thermal energy. Power requirements are measured at different standard time intervals of spacecraft flight forecasting orientation of its solar batteries to Sun. Magnitude of electric power generated by solar batteries is determined by forecast results. Measured magnitudes of consumed electric power are compared with forecast data. According to results obtained in comparison, flight time is divided into sections at excess of energy generated by solar batteries over consumed power, equality of these magnitudes and shortage of generated energy. High magnitudes of temperature are maintained at excess energy sections by conversion of difference of generated energy and consumed energy into heat. In case of reduction of generated energy in the course of changing the orientation of solar batteries on Sun, temperature in these zones is reduced to low limits at simultaneous equality of energies. In case of further increase of generated energy, temperature in said zones is increased to high limits at equality of energies. Then, in the course of change of generated energy, temperature correction cycles in temperature control zones are repeated.

EFFECT: avoidance of excess of consumed energy above generated energy of solar batteries.

7 dwg