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.

 

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