Cooling and heating method of metal hydride compressor system

Abstract

The invention relates to the technical field of metal hydride compressors, in particular to a cooling and heating method of a metal hydride compressor system. Comprising a generator, a condenser, an evaporator and an absorber, ionic compound solutions are arranged in the generator and the absorber, water heated by the generator and ionic compounds are separated to form an ionic compound concentrated solution, generated water vapor enters the condenser, the condenser exchanges heat with a heat exchanger A, and circulating water in the heat exchanger A is heated and then led to a heater. A hydrogen discharging bottle is arranged in the heater; liquid water generated after passing through the condenser enters an evaporator, the evaporator exchanges heat with a heat exchanger B, circulating water in the heat exchanger B is cooled and then led to a cooler, and a hydrogen absorption bottle is arranged in the cooler; moisture absorption and heat release reactions of ionic compounds are combined with a metal hydride compressor, a hydrogen release bottle releases hydrogen after being heated, a hydrogen absorption bottle absorbs hydrogen after being cooled, and the hydrogen release bottle can be connected with a fuel cell to provide hydrogen for the fuel cell for power generation.

Description

Technical field:

[0001] The present invention relates to the technical field of metal hydride compressors, and in particular to a cooling and heating method for a metal hydride compressor system. Background technology:

[0002] Currently, in metal hydride compressors, hydrogen is generally stored in hydrogen storage bottles with built-in hydrogen storage alloys. Hydrogen storage alloys are metals that can absorb hydrogen and form chemical bonds with it. Hydrogen storage alloys can absorb and release hydrogen according to changes in temperature. Current hydrogen storage bottles require a separate heating device when releasing hydrogen and a separate cooling device when absorbing hydrogen, both of which consume a large amount of additional energy. Ionic compounds such as lithium bromide have strong water absorption and can produce water vapor when heated. When water vapor turns into water, it releases heat, while when water turns into water vapor, it absorbs heat. If these water vapor endothermic and exothermic processes can be combined with the hydrogen storage bottles of metal hydride compressors, a large amount of energy will be saved. However, there is currently no good solution to the above problems.

[0003] In summary, the above-mentioned problems in the use of metal hydride compressors have become technical problems that need to be solved urgently in the industry. Summary of the invention:

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a cooling and heating method for a metal hydride compressor system, which solves the problem that previous hydrogen storage bottles required the installation of separate heating and cooling devices, consuming additional energy.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A cooling and heating method for a metal hydride compressor system includes a generator, a condenser, an evaporator, and an absorber. An ionic compound solution is provided in the generator and the absorber. After the generator is heated, water and the ionic compound are separated to form a concentrated ionic compound solution. The generated water vapor enters the condenser. The condenser performs heat exchange with a heat exchanger A. The circulating water in the heat exchanger A is heated and then passed to a heater. A hydrogen discharge bottle is provided in the heater. The hydrogen discharge bottle has a built-in hydrogen storage alloy. The hydrogen is released after being heated, thereby achieving compressed release of the hydrogen. Liquid water generated after passing through the condenser enters the evaporator. Water boils and evaporates in the evaporator, turning into water vapor. The evaporator exchanges heat with the heat exchanger B, and the circulating water in the heat exchanger B is cooled and then passed to the cooler. The cooler is equipped with a hydrogen absorption bottle with a built-in hydrogen storage alloy. The hydrogen absorption bottle absorbs hydrogen after cooling, thereby replenishing hydrogen. The water vapor generated by the evaporator enters the absorber, and the water vapor and ionic compounds merge in the absorber to form a dilute ionic compound solution. The dilute ionic compound solution is pumped into the generator through a solution pump for further evaporation and concentration, while the concentrated ionic compound solution in the generator is returned to the absorber through a pipeline for recycling.

[0007] The top outlet of the generator is connected to the inlet of the condenser through a pipeline, the outlet of the condenser is connected to the inlet of the evaporator through a pipeline via a throttle valve A, the outlet of the evaporator is connected to the inlet of the absorber through a pipeline, the outlet of the absorber is connected to the inlet of the generator through a pipeline via a solution pump, and the bottom outlet of the generator is connected to the absorber through a pipeline via a throttle valve B.

[0008] The condenser exchanges heat with the heat exchanger A, the heat exchanger A is connected to the cooling tower via a circulation pipeline, the outlet of the heat exchanger A is connected to the heater via a pipeline, a heating coil is provided in the heater, the inlet of the heating coil is connected to the outlet of the heat exchanger A via a pipeline, and the outlet of the heating coil is connected to the cooling tower via a pipeline.

[0009] The evaporator exchanges heat with the heat exchanger B, the heat exchanger B is connected to the cooling tower via a circulation pipeline, the outlet of the heat exchanger B is connected to the cooler via a pipeline, a cooling coil is provided in the cooler, the inlet of the cooling coil is connected to the outlet of the heat exchanger B via a pipeline, and the outlet of the cooling coil is connected to the cooling tower via a pipeline.

[0010] The generator is heated using solar energy or industrial waste heat.

[0011] The inlet of the heat exchanger B is connected to a low-temperature water source such as tap water or well water.

[0012] A heat exchanger is provided between the pipeline where the throttle valve B is located and the pipeline where the solution pump is located.

[0013] The gas outlet of the hydrogen discharge bottle is connected to the fuel cell.

[0014] The air inlet of the hydrogen absorption bottle is connected to the hydrogen storage tank.

[0015] The hydrogen release bottle and the hydrogen absorption bottle are both provided with pressure sensors.

[0016] The present invention adopts the above solution and has the following advantages:

[0017] By combining the hygroscopic and exothermic reaction of the ionic compound with a metal hydride compressor, the generator is heated, and water and the ionic compound are separated to form a concentrated ionic compound solution. The generated water vapor enters the condenser, and the condenser performs heat exchange with heat exchanger A. The circulating water in heat exchanger A is heated and then passed to the heater. The heater is equipped with a hydrogen release bottle with a built-in hydrogen storage alloy. The hydrogen release bottle can release hydrogen after heating, thereby achieving compressed release of hydrogen. The liquid water generated after passing through the condenser enters the evaporator, where the water boils and evaporates into water vapor. The evaporator performs heat exchange with heat exchanger B, and the circulating water in heat exchanger B is cooled and then passed to the cooler. The cooler is equipped with a hydrogen absorption bottle with a built-in hydrogen storage alloy. The hydrogen absorption bottle can absorb hydrogen after cooling, thereby achieving hydrogen replenishment. The water vapor generated by the evaporator enters the absorber, where the water vapor and ionic compound merge to form a dilute ionic compound solution. The dilute ionic compound solution is pumped into the generator by a solution pump for further evaporation and concentration, while the concentrated ionic compound solution in the generator flows back to the absorber through a pipeline and enters the next cycle. When the hydrogen in the hydrogen discharge bottle is released and the hydrogen in the hydrogen absorption bottle is absorbed, the hydrogen discharge bottle and the hydrogen absorption bottle can be interchanged and used alternately. The hydrogen discharge bottle can be connected to the fuel cell to provide hydrogen to the fuel cell for power generation. Description of the drawings:

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] In the figure, 1. generator, 2. concentrated solution of ionic compound, 3. condenser, 4. throttle valve A, 5. evaporator, 6. absorber, 7. dilute solution of ionic compound, 8. solution pump, 9. throttle valve B, 10. heat exchanger A, 11. cooling tower, 12. heater, 13. hydrogen release bottle, 14. heat exchanger B, 15. cooler, 16. hydrogen absorption bottle, 17. heating coil, 18. cooling coil, 19. heat exchanger. Specific implementation method:

[0020] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0021] like Figure 1As shown, a cooling and heating method for a metal hydride compressor system includes a generator 1, a condenser 3, an evaporator 5 and an absorber 6. An ionic compound solution is provided in the generator 1 and the absorber 6. After the generator 1 is heated, water and the ionic compound are separated to form an ionic compound concentrated solution 2. The generated water vapor enters the condenser 3. The condenser 3 performs heat exchange with the heat exchanger A10. The circulating water in the heat exchanger A10 is heated and then passed to the heater 12. The heater 12 is provided with a hydrogen release bottle 13. The hydrogen release bottle 13 has a built-in hydrogen storage alloy. The hydrogen release bottle 13 releases hydrogen after heating, thereby realizing the compression and release of hydrogen. The liquid water generated after passing through the condenser 3 enters the evaporator 5. Water boils and evaporates in the evaporator 5, turning into water vapor. The evaporator 5 exchanges heat with the heat exchanger B14, cooling the circulating water in the heat exchanger B14 and then passing it to the cooler 15. The cooler 15 is provided with a hydrogen absorption bottle 16, which has a built-in hydrogen storage alloy. The hydrogen absorption bottle 16 absorbs hydrogen after cooling, thereby replenishing hydrogen. The water vapor generated by the evaporator 5 enters the absorber 6, and the water vapor and the ionic compound merge in the absorber 6 to form a dilute ionic compound solution 7. The dilute ionic compound solution 7 is pumped into the generator 1 by the solution pump 8 for further evaporation and concentration, while the concentrated ionic compound solution 2 in the generator 1 flows back to the absorber 6 through the pipeline for recycling.

[0022] The top outlet of the generator 1 is connected to the inlet of the condenser 3 through a pipeline, the outlet of the condenser 3 is connected to the inlet of the evaporator 5 through a pipeline via a throttle valve A4, the outlet of the evaporator 5 is connected to the inlet of the absorber 6 through a pipeline, the absorber 6 is provided with a dilute solution of ionic compound 7, the outlet of the absorber 6 is connected to the inlet of the generator 1 through a pipeline via a solution pump 8, and the bottom outlet of the generator 1 is connected to the absorber 6 through a pipeline via a throttle valve B9.

[0023] The condenser 3 exchanges heat with the heat exchanger A10, and the heat exchanger A10 is connected to the cooling tower 11 through a circulation pipeline. Specifically, one outlet branch of the heat exchanger A10 is connected to the cooling tower 11, and the cooling tower 11 is further connected to the inlet of the heat exchanger A10 through a pipeline. Another outlet branch of the heat exchanger A10 is connected to the heater 12 through a pipeline. The heater 12 is provided with a hydrogen discharge bottle 13, which has a built-in hydrogen storage alloy. The heater 12 is used to heat the hydrogen discharge bottle 13 to release hydrogen. The heater 12 is provided with a heating coil 17. The inlet of the heating coil 17 is connected to the outlet of the heat exchanger A10 through a pipeline, and the outlet of the heating coil 17 is connected to the cooling tower 11 through a pipeline. The high-temperature water at the outlet of the heat exchanger A10 enters the heating coil 17 through the pipeline, which can improve the heating efficiency, fully heat the hydrogen discharge bottle 13, and realize continuous hydrogen discharge. After the water circulates in the heating coil 17, it returns to the cooling tower 11 through the pipeline for recycling.

[0024] The evaporator 5 exchanges heat with the heat exchanger B14, and the heat exchanger B14 is connected to the cooling tower 11 through a circulation pipeline. The outlet of the heat exchanger B14 is connected to the cooler 15 through a pipeline. A hydrogen absorption bottle 16 is provided in the cooler 15, and the hydrogen absorption bottle 16 has a built-in hydrogen storage alloy. The cooler 15 is used to cool the hydrogen absorption bottle 16 to absorb hydrogen; a cooling coil 18 is provided in the cooler 15, and the inlet of the cooling coil 18 is connected to the outlet of the heat exchanger B14 through a pipeline. The outlet of the cooling coil 18 is connected to the cooling tower 11 through a pipeline. The cooling water at the outlet of the heat exchanger B14 enters the cooling coil 18 through the pipeline, which can improve the cooling efficiency and fully cool the hydrogen absorption bottle 16 to achieve continuous hydrogen absorption. After circulating in the cooling coil 18, the water enters the cooling tower 11 through the pipeline, and then returns to the inlet of the heat exchanger B14 through the pipeline for recycling.

[0025] The generator 1 is heated by solar energy or industrial waste heat.

[0026] The inlet of the heat exchanger B14 is connected to a low-temperature water source such as tap water or well water to replenish the water volume inside the system.

[0027] A heat exchanger 19 is provided between the pipeline where the throttle valve B9 is located and the pipeline where the solution pump 8 is located. The heat exchanger 19 can exchange heat between the liquid in the pipeline of the throttle valve B9 and the liquid in the pipeline of the solution pump 8, and can preheat the liquid entering the generator 1 to improve the heat utilization rate.

[0028] The gas outlet of the hydrogen discharge bottle 13 is connected to the fuel cell to provide hydrogen to the fuel cell for power generation.

[0029] The air inlet of the hydrogen absorption bottle 16 is connected to a hydrogen storage tank, and the hydrogen storage tank can replenish hydrogen into the hydrogen absorption bottle 16.

[0030] The hydrogen discharge bottle 13 and the hydrogen absorption bottle 16 are both provided with pressure sensors, which are connected to the controller. The pressure sensor of the hydrogen discharge bottle 13 can detect the hydrogen pressure in the hydrogen discharge bottle 13. When the pressure is lower than the set value, it proves that the hydrogen in the hydrogen discharge bottle 13 has been released. At this time, the pressure sensor will send a signal to the controller, reminding the controller that a new hydrogen discharge bottle 13 needs to be replaced. Similarly, the pressure sensor of the hydrogen absorption bottle 16 can detect the hydrogen pressure in the hydrogen absorption bottle 16. When the pressure is higher than the set value, it proves that the hydrogen in the hydrogen absorption bottle 16 has been absorbed. At this time, the pressure sensor will send a signal to the controller, reminding the controller that a new hydrogen absorption bottle 16 needs to be replaced.

[0031] The ionic compound includes, but is not limited to, lithium bromide.

[0032] Working principle:

[0033] The generator 1 is heated by solar energy or industrial waste heat. The water and ionic compounds in the generator 1 are separated to form an ionic compound concentrated solution 2. The water turns into water vapor and enters the condenser 3. The condenser 3 exchanges heat with the heat exchanger A10. The circulating water in the heat exchanger A10 is heated and then passes to the heating coil 17 in the heater 12. The heater 12 is provided with a hydrogen discharge bottle 13. The hydrogen discharge bottle 13 has a built-in hydrogen storage alloy. The heating coil 17 heats the hydrogen discharge bottle 13 to release hydrogen, thereby achieving the compression and release of hydrogen. The water circulates in the heating coil 17 and then returns to the cooling tower 11 through the pipeline for recycling. The liquid water generated after passing through the condenser 3 can enter the evaporator 5 through the pipeline and the throttle valve A4 by utilizing the height difference. The water boils and evaporates in the evaporator 5 and turns into water vapor. The evaporator 5 exchanges heat with the heat exchanger B14 to cool the water. After cooling, the circulating water in the heat exchanger B14 is passed to the cooling coil 18 of the cooler 15. A hydrogen absorption bottle 16 is provided in the cooler 15, and the hydrogen absorption bottle 16 has a built-in hydrogen storage alloy. The cooling coil 18 can absorb hydrogen after cooling the hydrogen absorption bottle 16, thereby replenishing the hydrogen. After circulating in the cooling coil 18, the water enters the cooling tower 11 through the pipeline, and then returns to the inlet of the heat exchanger B14 through the pipeline for recycling; the water vapor generated by the evaporator 5 enters the absorber 6 again, and utilizing the strong water absorption of the ionic compound, the water vapor and the ionic compound are fused in the absorber 6 to form a dilute ionic compound solution 7, which is pumped into the generator 1 through the solution pump 8 for further evaporation and concentration, and the concentrated ionic compound solution 2 in the generator 1 can utilize the height difference to flow back to the absorber 6 through the pipeline and the throttle valve B9 to enter the next cycle.

[0034] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any replacement, improvement or transformation made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0035] Any matters not described in detail in the present invention are well-known technologies to those skilled in the art.

Claims

1. A cooling and heating method for a metal hydride compressor system, characterized in that: The generator and the absorber are provided with an ionic compound solution. After the generator is heated, water and the ionic compound are separated to form an ionic compound concentrated solution. The generated water vapor enters the condenser. The condenser exchanges heat with the heat exchanger A. The circulating water in the heat exchanger A is heated and then passed to the heater. The heater is provided with a hydrogen discharge bottle with a built-in hydrogen storage alloy. The hydrogen is released after being heated, realizing the compression and release of hydrogen. The liquid water generated after passing through the condenser enters the evaporator, and the water boils and evaporates in the evaporator. , turned into water vapor, the evaporator exchanges heat with the heat exchanger B, and the circulating water in the heat exchanger B is cooled and then passed to the cooler. The cooler is equipped with a hydrogen absorption bottle, and the hydrogen absorption bottle has a built-in hydrogen storage alloy. The hydrogen absorption bottle absorbs hydrogen after cooling, thereby realizing the replenishment of hydrogen; the water vapor generated by the evaporator enters the absorber, and the water vapor and ionic compounds are fused in the absorber to form a dilute ionic compound solution. The dilute ionic compound solution is pumped into the generator through a solution pump for further evaporation and concentration, and the concentrated ionic compound solution in the generator is returned to the absorber through a pipeline for recycling.

2. The cooling and heating method of a metal hydride compressor system according to claim 1, characterized in that: The top outlet of the generator is connected to the inlet of the condenser through a pipeline, the outlet of the condenser is connected to the inlet of the evaporator through a pipeline via a throttle valve A, the outlet of the evaporator is connected to the inlet of the absorber through a pipeline, the outlet of the absorber is connected to the inlet of the generator through a pipeline via a solution pump, and the bottom outlet of the generator is connected to the absorber through a pipeline via a throttle valve B.

3. The cooling and heating method of a metal hydride compressor system according to claim 1, characterized in that: The condenser exchanges heat with the heat exchanger A, the heat exchanger A is connected to the cooling tower via a circulation pipeline, the outlet of the heat exchanger A is connected to the heater via a pipeline, a heating coil is provided in the heater, the inlet of the heating coil is connected to the outlet of the heat exchanger A via a pipeline, and the outlet of the heating coil is connected to the cooling tower via a pipeline.

4. The cooling and heating method of a metal hydride compressor system according to claim 1, characterized in that: The evaporator exchanges heat with the heat exchanger B, the heat exchanger B is connected to the cooling tower via a circulation pipeline, the outlet of the heat exchanger B is connected to the cooler via a pipeline, a cooling coil is provided in the cooler, the inlet of the cooling coil is connected to the outlet of the heat exchanger B via a pipeline, and the outlet of the cooling coil is connected to the cooling tower via a pipeline.

5. The cooling and heating method of a metal hydride compressor system according to claim 1, characterized in that: The generator is heated using solar energy or industrial waste heat.

6. The cooling and heating method of a metal hydride compressor system according to claim 1, characterized in that: The inlet of the heat exchanger B is connected to a low-temperature water source such as tap water or well water.

7. The cooling and heating method of a metal hydride compressor system according to claim 1, characterized in that: A heat exchanger is provided between the pipeline where the throttle valve B is located and the pipeline where the solution pump is located.

8. The cooling and heating method of a metal hydride compressor system according to claim 1, characterized in that: The gas outlet of the hydrogen discharge bottle is connected to the fuel cell.

9. The cooling and heating method of a metal hydride compressor system according to claim 1, characterized in that: The air inlet of the hydrogen absorption bottle is connected to the hydrogen storage tank.

10. The cooling and heating method of a metal hydride compressor system according to claim 1, characterized in that: The hydrogen release bottle and the hydrogen absorption bottle are both provided with pressure sensors.

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