Thermosiphon

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

 

The invention relates to the field of power engineering, in particular to the use of the ground heat.

Known thermosyphons, containing inside the sealed enclosure of the working body with the ability of the phase transition, while the evaporating part is placed in the ground, and the capacitor portion is located above the surface of the Earth with the possibility of using the latent heat of condensation of the working fluid to useful purposes.

Known thermo siphon containing a working medium, with the ability to transition from liquid to gas and back, and having evaporator and condenser portions (see Reference exchangers. Moscow. ENERGOATOMIZDAT. 1987. Tom, str-105). The disadvantage of this design is the occurrence of relatively high thermal pressures in heat transfer between the condensing part of thermosyphon and heat consumer (such as the evaporator of the heat pump).

The objective of the invention is to create a device that provides heat transfer between the soil and the working fluid in the evaporator of the heat pump at a substantially reduced thermal head and at the same time to significantly decrease the size of the device.

The problem is solved in that thermosyphon with the evaporator of the heat pump, including thermosyphon containing the working bodies shall, with the ability to transition from liquid to gas and back, and having evaporator and condenser parts, according to the invention, thermo siphon comprises a sealed heat pipe containing a working medium, with the ability to transition from liquid to gas and back, and having an evaporator and a condenser portion, a condenser portion of the heat pipe limits together with the outer housing, cover and lower the platform cavity of the evaporator of a heat pump having a nozzle for supplying a liquid phase of the working fluid of the heat pump and exhaust the gaseous phase of the working fluid of the heat pump, thus condensing part of the heat pipe forms an inner housing of the evaporator of the heat pump, between the outer and inner casing of the evaporator of the heat pump is installed intermediate casing having apertures in the bottom part with the possibility of passage through them of a liquid or gaseous phase of the working fluid of the heat pump, circulating inside the heat pump evaporator, between the inner casing and the intermediate casing are directed vertically tube nozzle with the possibility of receiving them in the liquid phase of the working fluid of the heat pump under pressure, the evaporator of the heat pump has an internal surface. To intensify circulationaha body outer casing of the evaporator of the heat pump, his inner casing and the intermediate casing or parts thereof may have a conical shape and positioned so as to have a common vertical axis of symmetry, and the inner surface of the evaporator of the heat pump, including the inner housing may have a fin.

Figure 1 shows thermosyphon with the evaporator of the heat pump in section, and the arrows indicate the circulation of the working fluid in the evaporator. Figure 2 is a cross section of thermosyphon in the transverse plane passing at the level of the holes for the flow of circulating the working fluid from the area of its downward movement in the area of its upward movement.

thermosyphon includes a housing heat pipe (1), hammered vertically into the ground or backfilled with soil along the entire length of which the working body has the ability to evaporate during the motion of liquid droplets on its inner wall. Body heat pipe in its condenser part is surrounded by the intermediate casing (2). The cavity of the evaporator of the heat pump is limited by the outer housing (3)with the cover (6). The cone-shaped portion (4) in the condenser region of the heat pipe is of heat conducting material and limits the cavity of the evaporator of the heat pump. The intermediate casing (2) in its lower part has openings (5) for the passage of circulating in the evaporator, the working fluid of the heat pump. Evaporate the is equipped with a nozzle (7) for removal of gaseous working fluid in the compressor of the heat pump. The space between the intermediate casing (2) and the internal casing (1) through the vertical tube nozzle (8) communicates with the cavity for the liquid phase of the working fluid of the heat pump, located under the platform (9). This cavity is connected by a working body of the heat pump with the outlet of the condenser of the heat pump through the pipe (10).

The device operates as follows. The working fluid inside the sealed enclosure of the heat pipe (1) in the liquid phase under the action of gravity flows down along the inside wall, gradually evaporating and extracting the heat from the wall of the evaporating section of the heat pipe. In the condenser part of the heat pipe (4) it gives up heat to the working body of the heat pump. The latter is fed through the pipe (10) into the cavity of the evaporator of the heat pump, formed by an outer housing (3), cover (6), condensing part of the heat pipe (4) and the lower platform (9). The gaseous portion of the working fluid from the evaporator is directed to a compressor of the heat pump (figure 1 not shown) through the pipe (7). The working fluid of the heat pump with high velocity in the tubes, nozzles (8) due to the pressure difference at the ends of these tubes, nozzles, makes intensively to circulate the liquid phase of the working fluid and vapor-liquid mixture inside the evaporator, which is between the inner casing (1) and intermediate to what busom (2) rises, and between the outer housing (3) and intermediate casing (2) is lowered under the action of gravity down through the holes (5) re-enters the cavity between the inner casing (1) and intermediate casing (2). Thus, the intensification of heat transfer and, thereby, significantly reducing the required thermal head when thermal capacity and the area of the surfaces of the evaporator.

1. thermosyphon with the evaporator of the heat pump, including thermo siphon containing a working medium, with the ability to transition from liquid to gas and back, and having evaporator and condenser parts, characterized in that thermo siphon comprises a sealed heat pipe containing a working medium, with the ability to transition from liquid to gas and back, and having an evaporator and a condenser portion, a condenser portion of the heat pipe limits together with the outer housing, cover and lower the platform cavity of the evaporator of a heat pump having a nozzle for supplying a liquid phase of the working fluid of the heat pump and exhaust the gaseous phase of the working fluid of the heat pump thus condensing portion of the heat pipe forms an inner housing of the evaporator of the heat pump, between the outer and inner casing of the evaporator of the heat pump set p is megalocnus case, with holes in the bottom with the possibility of passage through them of a liquid or gaseous phase of the working fluid of the heat pump, circulating inside the heat pump evaporator, between the inner casing and the intermediate casing are directed vertically tube nozzle with the possibility of receiving them in the liquid phase of the working fluid of the heat pump under pressure, the evaporator of the heat pump has an internal surface.

2. thermosyphon according to claim 1, characterized in that the outer shell of the evaporator of the heat pump, the inner casing and the intermediate casing or parts thereof have a conical shape and are arranged such that they have a common vertical axis of symmetry.

3. thermosyphon according to claim 1, characterized in that the inner surface of the evaporator of the heat pump, including an inner case, have a fin.



 

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