Heat pump stirling
(57) Abstract:Compressed hot working gas passes through the tubes through the fridge, transferring heat to the coolant decentralized heating system. In the refrigerator is installed transverse plate with holes of small diameter. Tube refrigerator pass through the plates, some of which through one connected with the opposite sides of the outer wall of the body forming section of the refrigerator with the opposite movement of the coolant. Other plates are arranged between the first and the outer wall of the body not affected. The use of the invention will improve thermodynamic efficiency of a heat pump. 1 Il. The invention relates to the field of refrigeration gas regenerative machines running on reverse Stirling cycle and used as heat pumps for systems of decentralized heat supply.Know the use of refrigeration machines as heat pumps for decentralized heat supply. As a source of low-temperature heat using various gaseous and liquid waste with a high temperature or natural sources, narimasen have relatively low efficiency (Tanklefsky Century. And. , Grozman P. M., N. Kirillov.G., Sir J. M. Decentralized heating systems with heat pumps operating on the reverse Stirling cycle // Teploenergoeffectivnye technology. Newsletter, No. 1, S. IB., 1997, pp. 38-40.A device shell and tube heat exchanger, providing a cross-flow cooling tubes of the cooling medium and consisting of a casing, the tube bundle and the tile display transverse partitions ring-type in the case of the heat exchanger (B. A. Andreev. Heat exchangers for viscous liquids. Leningrad, "Energy", 1971, page 109).The disadvantage of this device is that the proposed location of the transverse walls causing a large number of turns of the coolant, leading to increased hydraulic resistance in the flow beam of the inner tubes of the heat exchanger.A device of the refrigerator concentric type for Stirling engines, consisting of a bundle of small-diameter tubes, tube plates for fixation, external and internal walls of the heat exchanger (C. N. Danilychev, S. I. Efimov, V. A. Ringing, M., Kruglov, A., Shuvalov. Stirling Engines. M., "engineering", haese by a significant reduction in the diameter of the tubes, leading to complication of the technology and cost of the heat exchanger.A device Stirling refrigerating machine, consisting of a load heat exchanger, cooler, regenerator, the working piston, displacer, drive, cavities compression and expansion (Arkharov A. M., Marfenin I. C., Mikulin E. I. Theory and design of cryogenic systems. M., "engineering", 1978, page 296).The disadvantage of this device is that the intensification of heat transfer in the condenser and increase the efficiency of the refrigeration machine is achieved including by reducing the diameter of the tubes and increase their number in this heat exchanger, which leads to an increase of the hydraulic resistance during the passage of the working gas of the machine through the fridge.The technical result, which can be obtained by carrying out the invention, is to increase thermodynamic efficiency of a heat pump based on the Stirling refrigerating machine.To achieve this technical result, heat pump, which includes a load heat exchanger, a regenerator, a work piston, displacer, the actuator, the cavity of the compression, expansion and refrigerator with Petruk obnych boards to fix them, external and internal walls of the casing, provided with transverse plates with holes of small diameter, the first of which through one connected with the opposite sides of the outer wall of the body forming section of the refrigerator with the opposite movement of the carrier decentralized system of heating (cooling medium), the other located between the first outer wall of the body do not touch, when this tube refrigerator pass through the data plate.The introduction of the heat pump Stirling refrigerator with transverse plates that have holes of small diameter, allows to obtain a new property, which consists in the intensification of heat exchange in the refrigerator by increasing the internal heat transfer surfaces of the refrigerator and turbulently of flow.The drawing shows a refrigerator heat pump Stirling.Case refrigerator consists of inner and outer concentric walls, respectively, 1 and 2, upper and lower tube sheets, respectively 3 and 4, with holes for the tubes 5 of the refrigerator. Inside the case, between 2 external and 1 internal walls are transverse plate two tnci 2 in a checkerboard pattern, through one. Plates of the second type 8 wall 2 is not affected. Plate type 7 and 8 are fixed to the inner wall 1, through them are also attached to the tube 5. Plate type 7 break the refrigerator case at the section with the opposite movement of the coolant heating system, for example, sections 9 and 10. For supply and removal of cooling medium are provided, respectively, the pipes 11, 12. The tube space of the refrigerator is limited to top and bottom pipe boards 3, 4, and laterally by the walls 1 and 2.The fridge works as follows.Hot working gas, after compression, moves through the fridge, passing through the tubes 5, transmits heat to the coolant heating system located in the annular space, through the walls of the tubes 5. The coolant is supplied in the annular space of the refrigerator through the pipe 11 and into section 9, limited bottom tube Board 3 and the bottom of the plate type 7, washes the inner wall 1 and reaches the opposite side of the outer wall 2. Plate type 8 is within this thread, and since it is connected with the walls of the tubes 5, and the plate type 7, thereby they increase the surface of heat transfer from the working gas, ENEA its direction to the opposite, where the flow is again plate type 8, and so on, This serpentine movement of the carrier is carried out as long as he is not removed from the cooling body through the pipe 12. The coolant passing through the sections 9, 10 and so on , also passes through the holes of small diameter 6 plates 7 and 8, at an angle of 90 degrees relative to the main flow, which ensures the process of turbulently.Sources of information
1. Tanklefsky Century. And., Grozman P. M., N. Kirillov.G., Sir J. M. Decentralized heating systems with heat pumps operating on the reverse Stirling cycle. // Teploenergoeffectivnye technology. Newsletter, No. 1, S.-Pb., 1997, pp. 38-40.2. Andreev, C. A. Heat exchangers for viscous liquids. -L.: Energy, 1971, page 109.3. Danilychev C. N., Efimov, S. I., Ringing Century A., Kruglov, M. G., A. Shuvalov, The Stirling Engines. - M.: Mashinostroenie, 1977, S. 113.4. Arkharov A. M., Marfenin I. C., Mikulin E. I. Theory and design of cryogenic systems. - M.: Mashinostroenie, 1978, pages 296 - prototype. Heat pump Stirling, including the load heat exchanger, a regenerator, a work piston, displacer, the actuator, the cavity of the compression, expansion and holodilniki pipes, tube plates for fixation, external and internal walls of the casing, characterized in that the refrigerator is provided with transverse plates with holes of small diameter, the first of which through one connected with the opposite sides of the outer wall of the body forming section of the refrigerator with the opposite movement of the carrier decentralized heating system, and the other located between the first outer wall of the body do not touch, when this tube refrigerator pass through these plates.
FIELD: power engineering, in particular, technology for transformation of heat by means of heat pumps, used in heating, conditioning and water supplying systems.
SUBSTANCE: device has circulation contour of working body, which includes serially connected compressor, capacitor, regenerative heat exchanger and first evaporator, and also line of second consumer, output of capacitor via heated substance is connected to line of first consumer. Input of ejector via active substance is connected to output of regenerative heat exchanger. Output of ejector is connected to input of first evaporator and through throttling valve is connected to input of second evaporator. Input of ejector via passive electronic substance is connected to line of second consumer. Output of second evaporator via separator is connected to line of third consumer.
EFFECT: extended functional capabilities of heat supplying systems and water supplying systems, namely, to receive in one apparatus both heat for heat supply system and cold at average temperature level for conditioning system and at low temperature level for cooling systems.
FIELD: heat engineering.
SUBSTANCE: heat pump comprises compressor, condenser, expander, evaporator, and heat exchanger. The inlet of the first space of the heat exchanger is connected with the outlet of the evaporator, and the outlet of the heat exchanger space is connected with the compressor. The inlet of the second space of heat exchanger is connected with the circuit between the condenser and expander through the control valve, and the outlet of the second space is connected with the circuit between the three-position control valve and expander. The expander is made of a throttle. The heat pump is provided with the temperature gauge mounted between the compressor and first space of the heat exchanger and is connected with the three-position control valve through controller.
EFFECT: enhanced reliability and stability of operation.
FIELD: heat power engineering.
SUBSTANCE: heat pump comprises compression cylinders, cylinder for adjacent tank with separating piston provided with individual heat exchangers, valving members, and high-pressure hydraulic pump connected in the closed circuit. Two additional cylinders interconnected through the valving members are connected in parallel between the inlets of the vertically oriented compression cylinders. The first additional cylinder is provided with a baffle. The pistons are interconnected with the rod passing through the opening made in the baffle. Two spaces formed by the walls of the baffle, pistons, and wall of the cylinder are provided with openings connected with the outlets of the three-way hydraulic switch whose inlets are connected with the inlet and outlet of the high-pressure hydraulic pump. The piston of the second additional cylinder is connected with the separating piston of the cylinder of the adjacent tank through the rod, rocking lever provided with hydraulic drive, and second heat insulated rod. The pistons of the compression cylinders are provided with displacers. The surfaces of displacers and inner surface of the compression cylinders adjacent to the air outlet of the cylinders are heat-insulated by means of solid heat insulator.
EFFECT: enhanced efficiency.
1 cl, 3 dwg
SUBSTANCE: invention relates to equipment for residential and industrial room heating. Compression heat pump consists of an evaporator, compressor, condenser, restrictor and liquid separator. The evaporator and condenser are represented with the enclosing vortex heat exchangers containing working agent supply and discharge nozzle and, respectively, low potential and high potential coolant supply and discharge nozzles, helical manifold with guiding unit and end walls. Micro channels are made on the internal and external surface of end walls. The enclosure is installed from the external surface side.
EFFECT: small-sized and high-capacity heat pump.
FIELD: heating systems.
SUBSTANCE: invention refers to heat engineering, and namely to heat pump devices. Heat pump includes evaporator, capacitor, throttle shutoff and control valves and vacuum pump, which are in-series included in closed circulation circuit of cooling agent. Vacuum pump is made with possibility of pumping cooling agent vapours with speed of 350 l/s within pressure range of 133 to 0.53·105 Pa. Invention provides the possibility of using a wide range of high-boiling matters as heat carriers with Tboiling >273°K at atmospheric pressure of matters. The most preferable is ethanol and its water solutions.
EFFECT: developing compact heating systems which do not require fuel margins and special communications, advantageous as to power and economy, and environmentally safe.
2 cl, 1 dwg
SUBSTANCE: present invention relates to compositions of a cooling agent or liquid heat carrier, which contain: approximately 1-99 wt % HFC-1234yf, approximately 99-1 wt % ammonia. The invention also relates to methods of producing heat, coldness, replacing cooling agent with large value of GWP using said composition, as well as a method of using said composition as a liquid heat carrier.
EFFECT: disclosed composition can be used as heat carrier.
7 cl, 6 ex, 14 tbl
SUBSTANCE: present invention relates to a composition of refrigerant agent or heat-transfer liquid, containing at least one compound selected from a group consisting of fluoroolefins of formula E- or Z-R1 CH=CHR2 , in which R1 and R2 independently denote a C1-C6 perfluoroalkyl groups, and where the said compound has at least 5 carbon atoms.
EFFECT: disclosed fluoroolefin compositions can be used to replace existing compositions of refrigerant agents or heat-transfer liquids, which have higher global warming potential; furthermore, compounds used in the composition are non-flammable.
34 cl, 11 ex, 17 tbl
FIELD: power industry.
SUBSTANCE: air conditioning system has four-way valve, heat exchanger and control, which are located indoors, control and heat exchanger, which are located outdoors, and which are connected in series to each other so that circuit is formed. Compressor steam-jet system includes compressor which has the first gas inlet hole, the second gas inlet hole and gas outlet hole. The first gas inlet hole is connected to four-way valve by means of gas-water separator. The second gas inlet hole is connected by means of bypass tube on which electrical expansion valve is located to indoor located control and outdoor located control. Gas outlet hole is connected to four-way valve. Indoor control is in-series connected by means of fluid tank to outdoor control. Bypass tube is located between indoor control and fluid tank and has the coil located inside fluid tank. Gas condition sensors are located at the first gas inlet hole, the second gas inlet hole and gas outlet hole. Depending on sensor readings the pressure of the second gas inlet hole of compressor is regulated so that volume of cooling agent jet can be maintained at optimum level.
EFFECT: higher heating capacity and efficiency of used energy at low ambient air.
8 cl, 3 dwg