Power generation device based on organic Rankine cycle of air source heat pump

Abstract

The utility model relates to a power generation device based on organic Rankine cycle of an air source heat pump, which comprises an air source heat pump circulating system, an air source heat pump circulating system, a heat pump circulating system, a heat pump circulating system and a heat pump circulating system, the air surface air cooler, the heat pump compressor, the efficient hot water heat exchanger, the condenser, the throttling device and the air surface air cooler are sequentially connected to form a complete loop; the low-boiling-point working medium power generation system comprises a hot water-low-boiling-point working medium heat exchanger, a low-boiling-point steam turbine, an evaporative cooler and a low-boiling-point working medium pump, and the hot water-low-boiling-point working medium heat exchanger, the low-boiling-point steam turbine, the evaporative cooler, the low-boiling-point working medium pump and the hot water-low-boiling-point working medium heat exchanger are sequentially connected to form a complete loop. And the hot water circulating system comprises a hot water circulating pump. The air source heat pump and the power generation technology are integrated, the energy utilization rate can be effectively improved, energy waste is reduced, and clean power output can be provided.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy utilization technical field especially relates to a kind of power generation device based on air source heat pump organic rankine cycle. BACKGROUND

[0002] With the increasing tension of global energy and the increasing aggravation of environmental pollution problem, the development and utilization of clean energy have become the focus of global attention, and the increasing attention to climate change problem, it is essential to find sustainable, low-emission energy solutions. Air source power generation technology is expected to play an important role in the field of energy in the future. It not only can provide peak shaving, frequency modulation and other power regulation functions for power grid, effectively support the smooth and efficient operation of power system, but also can occupy an important position in sustainable development, help achieve the goal of green transformation and low-carbon development of energy. However, the traditional air source heat pump is mainly used for heating or refrigeration, but its potential has not been fully utilized. Therefore, it is of great significance to study a kind of power generation device based on air source heat pump organic rankine cycle. SUMMARY

[0003] The utility model aims at solving the insufficient of prior art, and provides a kind of power generation device based on air source heat pump organic rankine cycle.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: a kind of power generation device based on air source heat pump organic rankine cycle, comprising:

[0005] Air source heat pump circulation system, including air cooling coil, heat pump compressor, condenser, throttling device, high-efficiency hot water heat exchanger, and sequentially connected into complete circuit according to the order of air cooling coil, heat pump compressor, high-efficiency hot water heat exchanger connection, condenser, throttling device, air cooling coil, high-efficiency hot water heat exchanger and condenser are integrally arranged;

[0006] Low-boiling-point working medium power generation system, including hot water-low-boiling-point working medium heat exchanger, low-boiling-point steam turbine, evaporative cooler, low-boiling-point working medium pump, and sequentially installed hot water-low-boiling-point working medium heat exchanger, low-boiling-point steam turbine, evaporative cooler, low-boiling-point working medium pump, hot water-low-boiling-point working medium heat exchanger are connected into complete circuit;

[0007] Hot water circulation system, including hot water circulating pump, and sequentially connected into complete circuit according to the order of high-efficiency hot water heat exchanger, hot water-low-boiling-point working medium heat exchanger, hot water circulating pump, condenser.

[0008] In particular, the high-efficiency hot water heat exchanger import end is close to the heat pump compressor outlet.

[0009] In particular, the throttling device is a thermal expansion valve.

[0010] The utility model discloses a beneficial effect is:

[0011] 1, the utility model discloses utilize the feature that the dry bulb temperature and the wet bulb temperature temperature difference of arid region is bigger, realizes air source heat pump and low boiling point power generation, and the electric quantity of sending out supplements system consumption electric energy, realizes the purpose of using air energy power generation.

[0012] 2, the utility model discloses utilize the low grade heat energy in air as heat source, through steam turbine converts heat energy into mechanical energy, and further drive generator produces electric energy. Compared with traditional high temperature steam power generation (such as fossil fuel power generation), the temperature of low temperature steam power generation is lower, and therefore its thermal efficiency is lower, but under the condition that there is a large amount of low grade energy available, still be an effective energy utilization mode, avoid energy waste.

[0013] 3, the utility model discloses from heat pump compressor export adopts high -efficient hot -water heat exchanger, because the specific heat of water is bigger, can better absorb heat and cool high -pressure refrigerant.

[0014] 4, the utility model discloses integration air source heat pump and power generation technology, can effectively improve energy utilization rate, reduce energy waste, and can provide clean electric power output. DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] In the drawing: 1-air table cooler;2-heat pump compressor;3-condenser;4-throttling device;5-high -efficient hot -water heat exchanger;6-hot water circulating pump;7-hot water-low boiling point working medium heat exchanger;8-low boiling point steam turbine;9-evaporative cooler;10-low boiling point working medium pump;

[0017] The following will combine the embodiment of the utility model and carry out detailed description with reference to the drawings. SPECIFIC EMBODIMENT

[0018] The utility model will be further explained below in combination with the drawings and examples:

[0019] As Figure 1 Shown, a kind of based on air source heat pump organic rankine cycle's power generation device, comprising:

[0020] Air source heat pump circulation system, including air table cooler 1, heat pump compressor 2, condenser 3, throttling device 4, high -efficient hot -water heat exchanger 5, and sequentially according to air table cooler 1, heat pump compressor 2, high -efficient hot -water heat exchanger 5 connection, condenser 3, throttling device 4, air table cooler 1's order connection into complete circuit;High -efficient hot -water heat exchanger 5 and condenser 3 are integrally arranged, and high -efficient hot -water heat exchanger 5 import end is close to heat pump compressor 2 export setting;Throttling device 4 is thermal expansion valve.

[0021] Low boiling point working substance power generation system, including hot water - low boiling point working substance heat exchanger 7, low boiling point steam turbine 8, evaporative cooler 9, low boiling point working substance pump 10, and sequentially install hot water - low boiling point working substance heat exchanger 7, low boiling point steam turbine 8, evaporative cooler 9, low boiling point working substance pump 10, hot water - low boiling point working substance heat exchanger 7 The order connection is connected into a complete loop;Low temperature boiling point working substance can adopt methanol, hexane, toluene and other substances, these organic matters can boil at lower temperature, produce steam, drive low boiling point steam turbine 8 to generate electricity.

[0022] Hot water circulation system, including hot water circulation pump 6, and sequentially according to the order connection of high -efficient hot water heat exchanger 5, hot water - low boiling point working substance heat exchanger 7, hot water circulation pump 6, condenser 3 into a complete loop.In hot water - low boiling point working substance heat exchanger 7, the heat of hot water is transferred to low boiling point working substance, and the heat exchange efficiency is also higher than that of general fluid heat exchanger, which is beneficial to heat conduction.

[0023] The utility model discloses a working time, in air source heat pump circulation system: in air table cooler 1, refrigerant absorbs the heat in air, temperature gradually rises, and pressure is basically unchanged.Low temperature low pressure gaseous refrigerant is inhaled heat pump compressor 2, under the action of heat pump compressor 2, the pressure and temperature of refrigerant all significantly rise, become high temperature high pressure gaseous refrigerant.In after high -efficient hot water heat exchanger 5 and condenser 3, refrigerant gives the heat to circulating water system, temperature gradually reduces, and pressure remains unchanged, still for high pressure.With the heat dissipation, gaseous refrigerant gradually condenses into high temperature high pressure liquid refrigerant.Afterwards, high temperature high pressure liquid refrigerant passes through throttling device 4, and refrigerant pressure sharply drops, and temperature also reduces, become low temperature low pressure liquid refrigerant.Finally, low temperature low pressure liquid refrigerant returns to air table cooler 1 again, and reabsorbs the heat in air, completes a heat pump cycle.

[0024] Hot water circulation system: circulating water is heated in high -efficient hot water heat exchanger 5 by the heat of refrigerant, and temperature rises.High temperature water in hot water - low boiling point working substance heat exchanger 7 passes heat to low boiling point working substance, and temperature reduces, and low temperature water is pressurized through hot water circulation pump 6, and the flow resistance of hot water circulation system is overcome, and effective heat transfer process is guaranteed.

[0025] Low-boiling working medium power generation system: when the low-boiling working medium enters the hot water-low-boiling working medium heat exchanger 7, it absorbs the heat of the hot water of the circulating water system, the temperature gradually rises, and the state changes from liquid to a mixture of liquid and gas, until it completely changes into high-temperature, low-pressure gas. Subsequently, the high-temperature, low-pressure gaseous working medium is sucked into the low-boiling turbine 8. In the low-boiling turbine 8, the gaseous working medium expands to do work, rotating the low-boiling turbine 8 blades, thereby converting heat energy into mechanical energy. In this process, the pressure and temperature of the working medium decrease, but it is still in a gaseous state. The low-temperature, low-pressure gaseous working medium discharged from the low-boiling turbine 8 enters the evaporative cooler 9, where the working medium releases heat and gradually condenses into low-temperature, low-pressure liquid. The low-temperature, low-pressure liquid working medium is then pressurized by the low-boiling working medium pump 10, the pressure rises, and it returns to the hot water-low-boiling working medium heat exchanger 7 again to start absorbing heat and complete a complete Rankine cycle.

[0026] The utility model discloses utilize the feature that the dry bulb temperature and the wet bulb temperature difference of arid region is big, realize air source heat pump and low boiling point power generation, and the electric quantity of emission supplements the system consumption electric energy, realizes the purpose of using air energy source power generation, utilize the low grade heat energy in air as heat source, through steam turbine converts heat energy into mechanical energy, and then drive generator produces electric energy, compared with traditional high temperature steam power generation (such as fossil fuel power generation), the temperature of low temperature steam power generation is lower, and therefore its thermal efficiency is lower, but under the condition that there is a large amount of low grade energy available, still be an effective energy utilization mode, avoid energy waste, the utility model discloses integrate air source heat pump and power generation technology, can effectively improve energy utilization rate, reduce energy waste, and can provide clean electric power output.

[0027] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] In the utility model, unless another definite provision and limitation, the term " install " " link " " connect " " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element inside's intercommunication or two element's interaction relation, unless another definite limitation. For ordinary skilled person in the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0029] The utility model has been described above in conjunction with the drawings, obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various improvements using the method concept and technical scheme of the utility model or direct application in other occasions without improvement are all within the protection scope of the utility model.

Claims

1. An air source heat pump based organic Rankine cycle power generation apparatus, characterized by, It comprises: An air source heat pump circulation system, comprising an air cooling device (1), a heat pump compressor (2), a condenser (3), a throttling device (4), and a high-efficiency hot water heat exchanger (5), and being connected in a complete loop in the order of the air cooling device (1), the heat pump compressor (2), the high-efficiency hot water heat exchanger (5), the condenser (3), the throttling device (4), and the air cooling device (1), and the high-efficiency hot water heat exchanger (5) and the condenser (3) being integrally arranged; A low-boiling-point working medium power generation system, comprising a hot water-low-boiling-point working medium heat exchanger (7), a low-boiling-point steam turbine (8), an evaporative cooler (9), and a low-boiling-point working medium pump (10), and being connected in a complete loop in the order of the hot water-low-boiling-point working medium heat exchanger (7), the low-boiling-point steam turbine (8), the evaporative cooler (9), the low-boiling-point working medium pump (10), and the hot water-low-boiling-point working medium heat exchanger (7); A hot water circulation system, comprising a hot water circulation pump (6), and being connected in a complete loop in the order of the high-efficiency hot water heat exchanger (5), the hot water-low-boiling-point working medium heat exchanger (7), the hot water circulation pump (6), and the condenser (3).

2. The power generation device based on air source heat pump organic Rankine cycle according to claim 1, characterized in that, The high-efficiency hot water heat exchanger (5) is arranged close to the outlet of the heat pump compressor (2).

3. The air source heat pump based organic Rankine cycle power generation apparatus according to claim 1, characterized in that, The throttling device (4) is a thermal expansion valve.

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