A heat pump working on reversed stirling cycle
(57) Abstract:When working guides displacer periodically block the holes on the side of the fridge, rasamma the processes of compression and expansion To avoid heat leakage isone cavity expansion, formed by a cap, the outer surface of the displacer and a corrugated wall, acquired that allows you to provide the best thermal insulation of cavity expansion. The use of the invention will improve the efficiency of thermodynamic cycle, to reduce the weight and characteristics of the heat pump. 1 Il. The invention relates to the field of regenerative gas 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, such as ground water or air. However, the applied heat pumps based on paracone yellow N. 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).It is known that to ensure effective ideal Stirling cycle must intermittent motion of the pistons is in principle possible to create a mechanism close to perfect, but when it is created, you must consider the requirements of simplicity and compactness (,Reader, Including Hooper. Stirling Engines. M., Ed. Mir, 1986, page 28).Known cryogenic refrigerating machine operating on the Stirling cycle and contains a built-in cylinder machine refrigerator (UK application 1483356, CL F 4 H, declared 1974).The disadvantage of this machine are non-stationary heat and mass transfer, increase in dimensions due to the removal of the remaining heat exchangers outside of the cylinder.Known regenerative gas refrigerating machine, providing intermittent motion of the working gas and consisting of a cylinder, a working piston, displacer with rails built into the cylinder of the regenerator, heat exchanger load and fridge with holes in the side of the solution is above the displacer is formed "dead space" increasing physical specifications of the machine and reducing the efficiency of the machine because of the pressure pulsations in it.The technical result, which can be obtained by carrying out the invention, is to improve the efficiency of thermodynamic cycle, reducing weight and size characteristics of the gaseous regenerative machine.To achieve this, the technical result of the heat pump working in reverse Stirling cycle, comprising a cylinder, a working piston, a displacer with rails built into the cylinder refrigerator with holes in the lower part of the side surface of the regenerator and the load heat exchanger, provided in the upper part of the cylinder cap, inside of which makes a reciprocating motion of the displacer, associated with the upper part of the cylinder corrugated wall of elastic material, while the inner surface of the displacer and corrugated walls form a cavity extension and the cavity between their outer surfaces and the cap vacuumized.The introduction of the heat pump cap, displacer associated with the cylinder Gavrilova, lies in the effective thermal insulation of cavity expansion due to the evacuation of the surrounding space, as well as reducing the friction force due to the reciprocating movement of the displacer in the absence of contact with the cylinder wall.The drawing shows a heat pump operating in reverse Stirling cycle.The heat pump has a cylinder 1 within which is located the working piston 2, refrigerator with 3 holes for passage of the working gas 4, the regenerator 5, a load heat exchanger 6. In the upper part of the cylinder is attached to the cap 7, which comprises the displacer 8. To the lower end of the displacer 8 fixed rails 9, reciprocating movement in the flow channel block heat exchangers. The displacer 8 is connected with the cylinder 1 with a corrugated wall 10 of elastic and heat-resistant material, which together with the displacer 8 and the upper part of the load heat exchanger 6 forms a cavity extension 11 of the heat pump. The cap 7 forms together with the outer side of the displacer 8 and the corrugated wall 10 of insulating the cavity 12, which for these purposes vacuumized. The displacer 8 is driven via the shaft 13, prob the ing the upper surface of the working piston 2 and the lower part of the refrigerator 3. Refrigerator 3 and the load heat exchanger 6 is made in the form of a tubular heat exchangers and have connections for input 17, 18 and exit 15, 16 working environments.The heat pump operates as follows.The piston-displacer 8 is in the lower dead point (LDP), guide block 9 holes 4 and extend beyond the bottom edge of the refrigerator 3. The working piston 2, moving up, compresses the working gas, the gas is compressed in the cavity 14, while initiating upward movement of the guides 9 will not open the Windows of 4. During compression the temperature of the working gas increases. When opening holes 4 starts moving compressed working gas from the cavity of the compression 14 into the cavity of the extension 11 formed in the lower part of the displacer and a corrugated wall 10, the gas passes through the openings 4, the cooler 3, the regenerator 5, a load heat exchanger 6 and enters the cavity 11. In the refrigerator 3 hot compressed working fluid transfers heat to the coolant system of decentralized heat supply coming into the refrigerator 3 through pipe 18 and removed through pipe 16. Upon reaching the working piston 2 of the top dead center (TDC) ends the movement of the working gas and with continued movement of the displacer 8 up where the CE expansion temperature of the working fluid inside the cavity 11 is reduced. To avoid heat leakage from outside the cavity 12 formed by the cap 7, the outer surface of the displacer 8 and the corrugated wall 10, vacuumized that allows you to provide the best thermal insulation of cavity expansion 11. When the displacer 8 TDC of the expansion process is pumped. Both of the piston 2, 8, moving down, moving cold expanded working gas from the cavity of the extension 11 into the cavity of the compression 14 in reverse order, through the load heat exchanger 6, the regenerator 5, the cooler 3 and the hole 4.In the load heat exchanger 6 through the pipe 17 is supplied to the source with the highest waste heat, for example processed hot gases, ground water, warm air, waste and sewage water. This waste heat is transferred to the working body heat pump coming from the cavity of the extension 11. The working fluid after expansion in the cavity 11 has a low temperature, which provides an effective heat exchange with a source of waste heat. The cooled source of waste heat is removed from the load heat exchanger 6 through the pipe 15. Upon reaching the guides 9 holes 4 are separated cavities 14 compression and extension 11, providing intermittent motion of the working gas for the turn applications
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. IB., 1997, pp. 38-40.2. , Reader, Including Hooper. Stirling Engines. M., Ed. Mir, 1986, page 28.3. UK application 1483356, CL F 4 H announced. 19744. Patent Of Russia 2079069, F 26 B 9/14, Bull. N 13, 1997 - the prototype. The heat pump working in reverse Stirling cycle, comprising a cylinder, a working piston, a displacer with rails built into the cylinder refrigerator with holes in the lower part of the side surface of the regenerator and the heat exchanger load, characterized in that provided in the upper part of the cylinder cap, inside of which makes a reciprocating motion of the displacer, associated with the upper part of the cylinder corrugated wall of elastic material, while the inner surface of the displacer and corrugated walls form a cavity extension and the cavity between their outer surfaces and the cap vacuumized.
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