Heat pipe refrigeration plant

FIELD: refrigeration equipment, particularly used to utilize secondary energy and natural source energy having low potential, namely for combined heat and cold production.

SUBSTANCE: refrigeration plant comprises body, turbine, compressor, supply pump, evaporative and condensation chambers and capillary system for working liquid throttling. The body is separated into power and cooling sections by solid partition. Evaporative, working and condensation chambers are created in the power section. Inside surfaces of side evaporative chamber walls and partition are covered with wick. Inner surface of end wall is provided with grooves and covered with thin porous material layer. Shaft extends through body walls, power and cooling sections, solid partition and wick layers. Feed pump rotor is put on shaft end so that the pump is communicated with working liquid reservoir. Arranged in cooling sections are low-temperature evaporative chamber and compressive condensation chamber communicated by compressor to which vapor flow is fed. Compressor rotor is put on shaft.

EFFECT: increased performance.

1 dwg

 

The present invention relates to refrigeration and can be used for utilization of secondary thermal energy and low-grade thermal energy from natural sources, namely for the integrated production of heat and cold.

Known heat and power installation comprising a closed circulation path for a refrigerant, comprising a pump, heat exchanger, turbine, condenser, receiver, open air circuit which includes a compressor, turbine and engine, and a pump, turbine, compressor and engine are hosted on the same shaft (A.S. SU 1460554, F 25 B 11/00, F 01 K 23/04, 1989).

Closer to the present invention is a transport turbomolecular machine containing enclosed and mounted on the same shaft as the turbine, compressor, motor, condenser (condensing chamber), the evaporator (evaporation chamber) and capillaries for throttling the working fluid (A.S. SU 1346919, F 25 B 11/00, 1987).

The disadvantages of the known power installation is the inability in its operation the use of secondary thermal energy and natural sources of low-grade heat.

The main disadvantages of known Turkological machines is the inability to utilization of low-grade secondary thermal energy, t is plavix resources natural sources, the bulky design and the inability to work in the absence of electricity, which limits the scope of its application and ultimately reduces its effectiveness.

The technical task to be solved by the invention, is to increase the efficiency of the refrigeration machine.

The task is implemented in talocrural refrigeration machine (TDM), which contains located in the same building, separated by a blank wall power and cooling section, inside which is placed in the power section connected in series between an evaporation chamber, a working chamber, a condensing chamber, a feed pump, while the evaporation chamber separated from the working partition with a concave perforated separation element, the side walls and partition the inside is covered with a wick and the inner surface of the end wall is made with grooves and covered with a thin layer of porous material in the chamber wall of the housing is also covered inside the wick and through walls chassis power and cooling sections, a blank wall and layers of wick skipped through the shaft, on which is mounted the power turbine wheel, placed in the turbine housing, communicating with the evaporation chamber through the steam nozzle, coupled with the connecting edge of the concave perforated separ the operating element and partitions, and through pipe throttled steam from the condensing chamber, the side walls of which are also covered inside the wick, which is a continuation of the wick of the working chamber, the shaft end-side vertical outer wall power section mounted rotor feed pump, suction inlet communicates with the reservoir fluid, made in the form of a cylindrical tube placed in the thickness of the wick, and communicated with him through the pores of the wick on its outer surface, a Central axis which passes the shaft, and with evaporative camera feed pump connected to the pressure pipe, provided at the end of the nozzle; in the refrigeration section is placed low temperature evaporation chamber, the inner surface of the end wall which is also provided with grooves and covered with a porous material, and compression of the condensation chamber, separated in the steam space of the wall and connected by a fluid capillary wick covering the inner surface of the side walls of the refrigeration section and, in turn, is partially covered by low temperature evaporation chamber casing with a gap from the end wall forming the throttle area, and a couple of the compressor, the rotor of which is also mounted on the shaft, forcing nozzle is placed in compression condensation the camera, the suction nozzle is in a low temperature evaporation chamber and provided with a hemispherical perforated drop entrainment.

Figure 1 presents the proposed teplotvornaja refrigerating machine (TTHM) in longitudinal section. Figure 2 - view from the left relative to figure 1, figure 3 - section a-a in figure 1, figure 4 - cross-section B-B in figure 2, figure 5 - increase places a in figure 1.

TTHM consists of a casing 1, separated by a blank partition 2 on the power section 3 and the cooling section 4, within which is placed in the power section in the direction of vapor evaporation chamber 5, separated by a partition 6 with concave perforated separation element 7, the side walls and the partition wall 6 is covered with a wick 8 and the inner surface of the end wall is provided with grooves 9 and is covered with a porous material 10, the working chamber 11 is also covered inside the wick 12, separated from the wick 8 by a partition 6, through the walls of power and cooling sections, respectively, and layers of wick 12 skipped through the shaft 13, on which is mounted the power turbine wheel 14, is placed in the turbine housing 15 which is connected with the evaporation chamber 5 through the steam nozzle 16, coupled with the connecting edge of the concave perforated separation element 7 and the partition 6, and through the pipe throttled pair 17 with the condensation chamber 18, the inner surface of the walls of the cat is Roy covered the same wick 12, at the end of the shaft 13 from the vertical outer wall of the housing 1 of the working chamber 11 mounted rotor 19 of the feed pump 20, which suction inlet communicates with the reservoir fluid 21, which represents a cavity in the form of a cylindrical tube placed in the wick 12 and communicating with him through the pores of the wick on its outer surface, a Central axis which passes the shaft 13, and with the evaporation chamber 5 feed pump 20 is connected to pressure pipe 22, provided with a nozzle 23; in the refrigeration section 4 of the low-temperature evaporation chamber 24, the inner surface of the end wall which is also provided with grooves 25 and covered with a porous material 26, and the compression of the condensation chamber 27, separated in the steam space of the partition 28 and interconnected by fluid capillary wick 29, covering the inner surface of the side walls of the cooling section 4 and is in turn covered in a low temperature evaporation chamber 24 of the casing 30 with a gap from the end wall forming the throttle area 31, and a pair of compressor 32, the rotor of which is also mounted on the shaft 13, the discharge pipe 33 is placed in compression condensation chamber 27, and the suction nozzle 34 is in a low temperature evaporation chamber 24 and is provided with a hemispherical punch is included in the drop entrainment 35.

The operations of the power section 3 of the proposed TDM core cycle steam power plant is the Rankine cycle, according to which positive work steam expansion in the turbine is significantly greater than the negative pressure in the compression refrigeration condensate section 4, put a refrigeration cycle steam compression refrigeration unit, whereby it is necessary to expend a certain amount of external energy (Intestin. Thermal engineering. - Moscow: metallurgy, 1973 (1), s, s) and high efficiency of heat transfer in heat pipes, which are divided into three sections: the zone of evaporation (heat supply), the adiabatic zone (heat transfer) and the condensation zone (exhaust heat), covered inside the wick and partially filled with the working fluid - carrying heat, which used water, alcohols, halocarbons, liquid metals, etc. (HIV and other Secondary heat flow meters and environmental protection. -Minsk: the graduate school, 1988 (2), p.106).

Offer TTHM works as follows.

Before you start working chamber 5, 11, 18 power section 3, the chambers 24, 27 refrigeration section 4 TTHM remove air and separately pumped working fluid, which is selected depending on thermal capacity of the hot and cold environments (e.g., water), evaporation Cam is ru 5 and collaboration in working and condensation chamber 11 and 18, respectively (fittings to remove air and working fluid supply not shown in figure 1) in number, sufficient to fill the pore volume of the fuses 8 and 11, the cover 10 and the grooves 9, the reservoir fluid 21 and the pump 20 with the pressure pipe 22, the refrigerant in chamber 24 and 27, respectively, after which the housing 1 TTHM set so that the evaporation chamber 5 in contact with the hot environment (e.g., exhaust gases), and the condensation chamber 18 from the heated environment (e.g., air), low-temperature evaporation chamber 24 with a cooled environment (e.g., air), compression of the condensation chamber 27 from the heated environment. As a result of heating the end of the evaporation chamber 5 power section 3 the evaporation of the working fluid in the grooves 9 and the porous material 10, which prevents the formation of steam film on the inner surface of the end face and thus intensifies the process of evaporation (Heat pipes and heat exchangers: from science to practice. Collection of scientific. Tr. - M.: 1990 (3), s), steam, creating pressure in the evaporation chamber 3, the resulting steam is passing through the concave perforated separation element 7, is exempt from the carry out of the droplets of the working fluid through the nozzle 16 enters the impeller blades of the power turbine 14 by rotating together with the shaft 13, which tells the rotational movement of the rotor 19 of the feed pump 20 and the compressor rotor 32 of the refrigeration seconds the AI 4, resulting in the turbine housing 15 is isentrope talapatra pair with a simultaneous decrease of its temperature and pressure (1, s), after which the spent steam through pipe throttled pair 17 enters the condensation chamber 18, the pressure in which is much less than in the evaporation chamber 5, is condensed there by contact of the outer surface of the chamber 18 with the medium being heated, after which the resulting condensate is absorbed by the pores of the wick 12 and under the influence of capillary forces and the vacuum generated by the pump 20, the adiabatic (3, p.106) is transported into the reservoir of the working fluid 21, where the pump 20 through the discharge pipe 22 and the nozzle 23 under pressure, the magnitude of which is determined by the working pressure of steam in the evaporation chamber 5, the working fluid is sprayed on the surface of the porous material 10, absorbed them, enters the groove 9, which is above the evaporation process, steam is released from the droplets of the working fluid to the separating element 7 and then through the nozzle 16 hits the blades of the turbine wheel 14, and a drop of the working fluid, most of which are due to the curvature of the separating element 7 is dropped on the surface of the wick 8, absorbed them and not evaporated together with drops coming from the nozzle 23, account of capillary forces move in evaporative cha is th camera 5, as in a conventional heat pipe. At the same time in the cooling section 4 in the operation of the compressor 32, which reduces the pressure in the low-temperature evaporator chamber 24, and contact evaporation chamber with a cooled medium evaporates at a low pressure and correspondingly low temperature of the refrigerant, thereby cooling the cooling medium, the resulting pressure increase in the compression of the condensation chamber 27 and contact her with the heated environment is the condensation of the vapor refrigerant at high pressure and correspondingly higher temperatures, resulting in heating of the heated medium, and the resulting condensate is absorbed by the capillaries of the wick 29 under the action of capillary forces and the differential pressure in chambers 24 and 27 goes to the throttle area 31, where choked, reducing the pressure on the evaporation surface of the low-temperature evaporation chamber 24, then the above process is repeated.

Thus, the proposed TDM provides the possibility of obtaining heat and cold due to the utilization of thermal energy potential (energy, waste water, waste gases and so on), thermal resources natural sources (solar energy, water, etc), which ensures its high efficiency in a wide RA is personal situations.

Teplotvornaja refrigerating machine (TDM), including housing, placed in it the turbine and compressor, pump, evaporative and condensing chamber, a capillary for throttling the working fluid, characterized in that the hull is divided by a blank partition on power and cooling section, inside which is placed in the power section connected in series between an evaporation chamber, a working chamber, a condensing chamber, a feed pump, while the evaporation chamber separated from the working partition with a concave perforated separation element, the side walls and partition the inside is covered with a wick and the inner surface of the end wall is made with grooves and covered with a thin layer of porous material in the chamber wall of the housing is also covered inside the wick and through the walls of the housing of the power and cooling sections, a blank wall and layers of wick skipped through the shaft, on which is mounted the power turbine wheel, placed in the turbine housing, communicating with the evaporation chamber through the steam nozzle, coupled with the connecting edge of the concave perforated separation element and the partition, and through the pipe throttled steam from the condensing chamber, the side walls of which are also covered inside the wick, which is a continuation of the wick is working chamber, at the end of the shaft-side vertical outer wall power section mounted rotor feed pump, suction inlet communicates with the reservoir fluid, made in the form of a cylindrical tube placed in the thickness of the wick, and communicated with him through the pores of the wick on its outer surface, a Central axis which passes the shaft, and with evaporative camera feed pump connected to the pressure pipe, provided at the end of the nozzle; in the refrigeration section is placed low temperature evaporation chamber, the inner surface of the end wall which is also provided with grooves and covered with a porous material, and compression of the condensation chamber, separated by a in the vapour space wall and connected by a fluid capillary wick covering the inner surface of the side walls of the refrigeration section and, in turn, is partially covered by low temperature evaporation chamber casing with a gap from the end wall forming the throttle area, and a couple of the compressor, the rotor of which is also mounted on the shaft, forcing nozzle is placed in compression of the condensation chamber, the suction nozzle is in a low temperature evaporation chamber and provided with a hemispherical perforated drop entrainment.



 

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