TWI837938B - Green energy water production system and its wide-area power management method - Google Patents

Abstract

The present invention relates to a green energy water production system and a wide-range power management method thereof, including a green energy power supply module, a wide-range power management module and a condensing water production equipment; the condensing water production equipment includes a fan unit and a compressor, and the speeds of the two units are respectively controlled by the wide-range power management module. The wide-range power management module tracks the maximum available power that the green energy power supply module can provide to the condensing water production equipment, and then controls the speeds of the fan unit and the compressor according to the detected temperature data and the built-in dew point temperature, so that the condensing water production equipment can produce the maximum amount of condensed water; because the present invention uses green energy power in conjunction with wide-range power management, it does not need to use mains electricity and batteries to provide working power, and can produce the maximum amount of condensed water, greatly improving the water production efficiency.

Description

Green energy water production system and wide-area power management method

The present invention relates to a green energy water production system and a wide-range power management method thereof, and in particular to a technology for extracting maximum energy from a green energy power supply module through a wide-range power management module to enable a condensing water production device to produce the maximum amount of condensed water.

Obtaining clean water in areas where water resources are scarce has always been what people pursue. It not only provides safe drinking water, but can also be used to grow plants or raise animals, thereby increasing the value of dry land. Condensing equipment is currently commonly used to cool water vapor and condense it into water, and the most common condensing equipment on the market is the technology of motor compressors combined with refrigerants. Green energy such as solar energy and wind power is a widely used renewable energy source. Although its electricity can be used to directly drive motor compressors, it will cause the following problems:

First, this type of green energy often has the problem of insufficient output. The compressor needs sufficient power to operate, otherwise the motor compressor will stop and start, sucking in liquid refrigerant and causing the valve to break and permanently damage. In addition, the motor compressor requires a large current when starting, and the solar panels or wind turbines will not be able to start the motor compressor when the power supply capacity is insufficient.

Secondly, this type of green power also has the problem of unstable output. When the power supply capacity is unstable, the motor compressor cannot effectively draw energy from the green power. Furthermore, the efficiency of condensing water vapor into water will be affected by temperature changes, and the efficiency of obtaining energy to condense water cannot be maximized.

Third, if the sunlight or wind speed is insufficient or unstable when the motor compressor is running at high speed, the insufficient or unstable power supply may cause the solar panels or wind turbines to overload and trip. Therefore, directly operating the motor compressor with green energy will cause reliability and efficiency problems.

From the above, we can see that green energy such as solar energy and wind power is usually not suitable for directly supplying power to condensing equipment with motor compressors. Instead, it is usually obtained from the mains or power storage systems. However, many areas may not have mains supply, and the lead-acid batteries in the power storage system also have a service life and are not environmentally friendly.

Therefore, the main purpose of the present invention is to provide a green energy water production system and a wide-range power management method, which effectively utilizes renewable energy to extract the maximum available power through wide-range power management, and drives the condensing water production equipment in accordance with conditions such as temperature and/or humidity, thereby effectively improving water production efficiency.

The main technical means adopted to achieve the above-mentioned purpose is to make the above-mentioned green energy water production system include: a green energy power supply module, which uses a renewable energy conversion to generate green energy power; a wide-range power management module, which tracks the green energy power generated by the green energy power supply module and determines whether the green energy power is used as a working power source based on the tracking result, and at the same time cooperates with an ambient temperature value and a built-in dew point temperature to generate a fan drive signal and a compressor drive signal; and a condensing water production equipment, which is The wide-range power management module determines whether to obtain the working power from the green power supply module, and includes a fan set and a compressor; wherein the fan set and the compressor are driven by the fan drive signal and the compressor drive signal output by the wide-range power management module respectively; thereby, the wide-range power management module tracks the maximum available green power that the wide-range power management module can provide to the condensing water production equipment, and then controls the speed of the fan set and the compressor according to the ambient temperature value and the built-in dew point temperature.

From the above, it can be seen that the present invention utilizes the wide-range power management module of the green energy water production system to extract the maximum available green energy from the green energy power supply module, and controls the operation of the fan unit and the compressor according to the measured temperature. Thus, the present invention can replace the power supply of the general city power and power storage system by combining the wide-range power management module with the green energy power supply module, and efficiently extract green energy to drive the speed of the fan unit and the compressor to produce the maximum amount of condensed water.

Another major technical means adopted to achieve the above-mentioned purpose is to make the above-mentioned wide-range power management method include: tracking a green power; judging whether the green power is greater than or equal to a working voltage value; when the green power is greater than or equal to the working voltage value, using the green power as a working power source and continuously tracking its working voltage; reading an ambient temperature value and a built-in dew point temperature; and generating a fan drive signal and a compressor drive signal according to the working voltage of the green power, the ambient temperature value and the built-in dew point temperature.

From the above, it can be seen that the present invention uses a wide-range power management method to manage the supply of green energy, and at the same time determines the maximum green energy that can be drawn and then generates a better driving signal based on the measured temperature. In this way, the present invention can effectively manage the green energy that is often insufficient or unstable in supply, and can replace the general city power and storage system to output electricity; and according to the maximum available green energy tracking and the measured temperature, the driving signal with the best efficiency is generated to drive the fan unit and the compressor to produce the maximum condensate.

10: Green energy power supply module

20: Wide-band power management module

21: Working power channel

22: Microprocessor

23: Voltage sensor

30: Condensation water production equipment

31: Fan set

311: Brushless Motor

312: Fan motor driver

32: Compressor

321: Brushless motor compressor

322: Brushless motor driver

41: Ambient temperature sensor

42: Ambient humidity sensor

43: Evaporator temperature sensor

44: High pressure side pressure sensor

45: Low pressure side pressure sensor

Figure 1 is a system block diagram of the present invention.

Figure 2 is a block diagram of the wideband power management module of the present invention.

Figure 3 is a flow chart of one of the wide-band power management methods of the present invention.

Figure 4 is a flowchart of the wide-band power management method of the present invention applied to solar panels.

Figure 5 is a flowchart of the wide-band power management method of the present invention applied to a wind turbine.

Regarding the green energy water production system of the present invention, a preferred embodiment is shown in FIG1, including a green energy power supply module 10, a wide-range power management module 20, a condensing water production equipment 30 and a sensor set; wherein:

The green power supply module 10 converts electricity using renewable energy. The wide-band power management module 20 tracks the electricity generated by the green power supply module 10 and determines whether the electricity generated by the green power supply module 10 is used as the working power source of the condensing water making equipment 30. The green power supply module 10 can be a solar panel, a wind turbine, etc. Since the solar panel and the wind turbine will be affected by the sunshine and the wind, the power generated by the green power supply module 10 is the power of the condensing water making equipment 30. The size of the generated electricity is small and has low stability. However, the wide-range power management module 20 can be used to manage the generated electricity, and the maximum available power of the green power supply module 10 can be drawn to supply the working power of the condensing water making equipment 30. In addition, the built-in dew point temperature and the ambient temperature sensed by the temperature sensor can be used to control the drive signal output to the condensing water making equipment 30 to obtain the maximum water making efficiency.

In this embodiment, the condensing water making equipment 30 is a condensing air conditioning system, which includes a compressor, a condenser, an evaporator, an expansion valve and a fan assembly. The compressor, condenser, evaporator and expansion valve are connected by pipelines, and the pipelines are filled with refrigerant, which is pushed by the compressor and flows between the condenser and the evaporator through the pipelines. The expansion valve is arranged on the pipeline between the condenser and the evaporator. With the expansion valve as the boundary, the evaporator side is the low-pressure side, and the condenser side is the high-pressure side; the fan assembly is arranged relative to the evaporator. The above-mentioned condensing air conditioning system is a known air conditioning device. Therefore, FIG. 1 only discloses devices related to the green energy water production system of the present invention, such as a fan unit 31, a compressor 32, etc.; wherein the fan unit 31 includes a brushless motor 311 and a fan motor driver 312 connected to and driving the brushless motor 311; the compressor 32 includes a brushless motor compressor 321 and a brushless motor driver 322, and the brushless motor compressor 321 is connected to and driven by the brushless motor driver 322. The fan motor driver 312 and the brushless motor driver 322 are respectively connected to the wide-band power management module 20 and driven by the driving signal outputted by the module to control the speed of the brushless motor 311 and the brushless motor compressor 321. When the speed of the brushless motor 311 and the brushless motor compressor 321 changes, the amount of condensed water on the evaporator also changes accordingly.

In this embodiment, the sensor set includes an ambient temperature sensor 41, which is connected to the wide-range power management module 20 to provide an ambient temperature value of the green energy water production system installation site to the wide-range power management module 20. In addition to the ambient temperature sensor 41, the sensor set may further include an ambient humidity sensor 42 and an evaporator temperature sensor 43. The ambient humidity sensor 42 is used to provide an ambient humidity value of the green energy water production system installation site to the wide-range power management module 20, and the evaporator temperature sensor 43 is also connected to the wide-range power management module 20 to provide an evaporator temperature value to the wide-range power management module 20. In addition to the aforementioned temperature/humidity sensor, the sensor assembly also includes a high-pressure side pressure sensor 44 and a low-pressure side pressure sensor 45, which are respectively disposed on the high-pressure side and the low-pressure side of the brushless motor compressor 321, and provide a high-pressure side pressure value and a low-pressure side pressure value to the wide-range power management module 20.

Please refer to FIG. 2 . In this embodiment, the wide-band power management module 20 includes a working power channel 21, a microprocessor 22, and a voltage sensor 23. The working power channel 21 is connected to the power output terminal of the green power supply module 10 and the working power input terminal of the condensing water making equipment 30. The microprocessor 22 has a sensing voltage input terminal, a power input terminal, a set of sensing signal input terminals, and a set of driving signal output terminals. The sensing voltage input terminal is connected to the voltage The sensor 23 is connected to the working power channel 21. The voltage sensor 23 senses the power voltage outputted from the green power supply module 10 to the working power channel 21, and provides a sensed voltage value to the microprocessor 22. The power input terminal is connected to the working power channel 21 via a DC power supply (not shown in the figure), so as to convert the power transmitted on the working power channel 21 into a stable DC power supply (e.g. 5V) via the DC power supply to supply the working power of the microprocessor 22.

The sensing signal input terminal of the microprocessor 22 is respectively connected to the ambient temperature sensor 41, the ambient humidity sensor 42, the evaporator temperature sensor 43, the high-pressure side pressure sensor 44, and the low-pressure side pressure sensor 45 to obtain the ambient temperature/humidity value, the evaporator temperature value, and the high-pressure side/low-pressure side pressure value of the compressor from the sensors. Furthermore, the drive signal output terminal of the microprocessor 22 is respectively connected to the drive signal input terminals of the fan motor driver 312 and the brushless motor driver 322 of the condensing water making equipment 30, whereby the microprocessor 22 can cooperate with the working power supply voltage and various temperature/humidity values sensed by the voltage sensor 23, and refer to the built-in dew point temperature to generate corresponding fan drive signals and compressor drive signals to control the speed of the brushless motor 311 and the brushless motor compressor 321, mainly to achieve the purpose of generating maximum condensed water.

In addition, the microprocessor 22 of the wide-band power management module 20 also provides compressor protection and power-off protection functions. In terms of compressor protection, the microprocessor 22 obtains the high-pressure side and low-pressure side pressure values of the brushless motor compressor 321 through the high-pressure side pressure sensor 44 and the low-pressure side pressure sensor 45. When the pressure value is abnormal, the brushless motor compressor 321 is immediately turned off to prevent evaporator frost, system overheating, etc. Furthermore, when the brushless motor compressor 321 is turned on, the microprocessor 22 also reads the pressure values of the high-pressure side and the low-pressure side. If the green power supply module 10 uses a solar panel, and there is a large pressure difference between the high-pressure side and the low-pressure side of the brushless motor compressor 321, it may be caused by the aircraft passing over the solar panel to form a shadow and cause power failure. Restart, when encountering the above situation, the microprocessor 22 will make the brushless motor 311 of the fan assembly 31 run at full speed, and after the pressure difference drops back to the safe range, the brushless motor compressor 321 will be started at the lowest speed, and then the speed of the brushless motor compressor 321 and the brushless motor 311 will be dynamically adjusted to extract the maximum energy from the solar panel.

Since the microprocessor 22 is also supplied with working power by the green power supply module 10, in order to prevent the green power supply module 10 from being affected by the sunshine or wind strength and causing the wide-band power management module 20 to trip repeatedly, in a feasible embodiment, a power detector 24 is provided on the working power channel 21. The power detector 24 is located at the front end of the voltage sensor 23, the microprocessor 22 and the connected condensing water making equipment 30, and includes a dummy load and a voltage-triggered switching switch, wherein the dummy load can consume several times more power than the microprocessor. 22 working power supply power. When the power supply of the green power supply module 10 is lower than a voltage value, the voltage-triggered switching switch does not move. At this time, the working power supply channel 21 is interrupted, and the power output by the green power supply module 10 will be consumed on the dummy load. When the power supply of the green power supply module 10 is greater than or equal to the voltage value, the switching switch is triggered to switch, and the working power supply channel 21 will be opened, so that the power output by the green power supply module 10 is used as a working power supply to supply the microprocessor 22 and the condensing water making equipment 30.

The operation of the wideband power management module 20, the green power supply module 10, and the condensing water production equipment 30 is described below. The microprocessor 22 of the wideband power management module 20 mainly executes the following steps (see FIG. 3 ): tracking the green power (301); determining whether the green power is greater than or equal to a working voltage value (302); and when the green power is greater than or equal to a working voltage value (303). The green energy power is greater than or equal to the working voltage value, so that the green energy power is used as a working power source, and its working voltage is continuously tracked (303); an ambient temperature value and a built-in dew point temperature are read (304); and according to the working voltage of the green energy power, in combination with the ambient temperature value and the built-in dew point temperature, a fan drive signal and a compressor drive signal (305) are generated.

The aforementioned method mainly tracks the voltage value of green energy power step by step, and drives the fan unit 31 and the compressor 321 according to the maximum power that can be drawn, the ambient temperature value, the built-in dew point temperature and other parameters, so that the ambient temperature and the dew point temperature maintain a specific temperature difference (for example, 5 degrees), thereby generating the maximum amount of condensed water. The following will further explain the working process of the wideband power management module 20. For the convenience of explanation and understanding, the green power supply module 10 is composed of a solar panel. The working process of the wideband power management module 20 includes the following steps: determining whether the power generated by the solar panel is less than or equal to a first working voltage value (for example, 9.9V (401). If so, the energy generated will be consumed by the dummy load of the power detector 24, and the switching switch triggered by the voltage will not be turned on. The working power channel 21 is in the disconnected state. The microprocessor 22 is not powered by the working power channel 21 at this time, so it is not working (402); it is determined whether the power generated by the solar panel is equal to a second working voltage value (for example, 10V) (403). If so, the switching switch triggered by the voltage in the power detector 24 will switch to open the working power channel 21, and the microprocessor 22 can be powered by the working power channel 21 and start working (404).

It is determined whether the power generated by the solar panel is greater than the second working voltage value (405), for example, 10V~19.9V. If so, the power generated by the solar panel is used as the working power supply to the condensing water making equipment 30 (406); it is determined whether the aforementioned power is further increased to a third working voltage value (for example, 20V) (407). If so, the brushless motor 311 driving the fan set 31 is started at the lowest speed (408); then it is determined whether the green energy power is maintained at the third working voltage value (409). If so, the brushless motor 311 driving the fan set 31 gradually increases the speed (410); when the power is greater than the third working voltage value, the brushless motor 311 driving the fan set 31 reaches the maximum speed.

Determine whether the pressure difference between the high-pressure side and the low-pressure side is normal (411). If so, switch the brushless motor 311 of the fan assembly 31 to the lowest speed, and start the brushless motor compressor 321 at the lowest speed, and then gradually increase its speed until it reaches the highest speed. At this point, the speed of the brushless motor 311 of the fan assembly 31 is also increased and maintained (412).

By adjusting the speed of the brushless motor 311 of the fan unit 31 and the speed of the brushless motor compressor 321 according to the size of the green energy power, the temperature difference between the evaporator temperature and the dew point temperature (for example, a difference of 5 degrees) is controlled to produce the maximum amount of condensed water.

Since the electricity generated by solar panels increases with the sunshine conditions, the above workflow can be used to track the electricity generated by solar panels in real time, and generate signals to drive fans and compressors in combination with data such as temperature, humidity, and dew point temperature, thereby generating the maximum amount of condensed water.

Furthermore, when the green power supply module 10 is composed of a wind turbine and in a weak wind state, the working process of the wide-range power management module 20 is shown in FIG. 5 and includes the following steps: determining whether the power generated by the wind turbine is less than or equal to a first working voltage value (e.g., 9.9V (501)). If so, the energy generated by the wind turbine will be consumed by the dummy load of the power detector 24, and the switching switch triggered by the voltage will not be turned on, and the working power Channel 21 is in a disconnected state. At this time, the microprocessor 22 has not obtained power supply from the working power channel 21 and has not yet started working (502). It is determined whether the power generated by the wind turbine is equal to a second working voltage value (e.g. 10V) (503). If so, the switching switch triggered by the voltage in the power detector 24 will switch to open the working power channel 21. The microprocessor 22 obtains power supply from the working power channel 21 and starts working (504).

Determine whether the power generated by the wind turbine is greater than the second working voltage value (505), such as 10V~19.9V. If so, the power generated by the wind turbine is used as the working power supply to the condensing water making equipment 30 (506); determine whether the aforementioned power is further increased to a third working voltage value (such as 20V) (507). If so, the microprocessor 22 counts a specific period of time. time (e.g., 30 seconds) (508), and determining whether the power is maintained at the third working voltage value (509) during the timing period. If so, the brushless motor 311 driving the fan assembly 31 is started at the lowest speed (510); then determining whether the power is greater than the third working voltage value (511). If so, the brushless motor 311 driving the fan assembly 31 reaches the highest speed (512).

Determine whether the pressure difference between the high-pressure side and the low-pressure side is normal (513). If so, switch the brushless motor 311 of the fan assembly 31 to the lowest speed, and start the brushless motor compressor 321 at the lowest speed, and then gradually increase its speed until it reaches the highest speed. At this point, the speed of the brushless motor 311 of the fan assembly 31 is also increased and maintained (514).

By adjusting the speed of the brushless motor 311 of the fan unit 31 and the speed of the brushless motor compressor 321 according to the size of the power, the temperature difference between the evaporator temperature and the dew point temperature is controlled to produce the maximum amount of condensed water. The temperature difference between the air outlet temperature (ambient temperature) and the evaporator temperature is generally between 5 and 10 degrees. The greater the temperature difference, the faster the heat transfer of the air, which can increase the amount of condensed water. However, the specific heat of water is very large, and the condensed water will also take away a lot of "cold" from the evaporator. The purpose of the present invention is to produce condensed water instead of low-temperature ice water, which means that the evaporator temperature is not the colder the better. The above method can maintain the evaporator temperature and the built-in dew point temperature at a specific temperature difference, so the purpose of obtaining the maximum amount of condensed water can be achieved.

10: Green energy power supply module

20: Wide-band power management module

30: Condensation water production equipment

31: Fan set

311: Brushless Motor

312: Fan motor driver

32: Compressor

321: Brushless motor compressor

322: Brushless motor driver

41: Ambient temperature sensor

42: Ambient humidity sensor

43: Evaporator temperature sensor

44: High pressure side pressure sensor

45: Low pressure side pressure sensor

Claims (10)

A green energy water production system includes: a green energy power supply module, which generates green energy power by converting a renewable energy source; a wide-range power management module, which tracks the green energy power generated by the green energy power supply module and determines whether the green energy power is used as a working power source according to the tracking result, and generates a fan drive signal and a compressor drive signal in combination with an ambient temperature value and a built-in dew point temperature; and a condensing water production device, which is determined by the wide-range power management module. Determine whether to obtain the working power from the green power supply module, which includes a fan set and a compressor; wherein the fan set and the compressor are driven by the fan drive signal and the compressor drive signal output by the wide-range power management module respectively; thereby, the wide-range power management module tracks the maximum available green power that the wide-range power management module can provide to the condensing water making equipment, and then controls the speed of the fan set and the compressor according to the ambient temperature value and the built-in dew point temperature. The green energy water production system as described in claim 1, the wide-range power management module includes: a working power channel, respectively connected to a power output terminal of the green energy power supply module and a working power input terminal of the condensing water production equipment; a microprocessor, having a sensing voltage input terminal, a power input terminal, a set of sensing signal input terminals and a set of driving signal output terminals; wherein the power input terminal is connected to the green energy power supply module through a DC power supply. The working power channel is connected; the sensing signal input end is respectively connected to an ambient temperature sensor and an evaporator temperature sensor; the driving signal output end is respectively connected to a fan motor driver and a brushless motor driver of the condensing water making equipment; a voltage sensor is respectively connected to the working power channel and the sensing voltage input end of the microprocessor to provide a sensing voltage value to the microprocessor. As described in claim 2, the green energy water production system has an electric power detector on the working power supply channel. The electric power detector is located at the front end of the voltage sensor, microprocessor and connected condensing water production equipment. It includes a dummy load and a voltage-triggered switching switch. When the power supply of the green energy power supply module is lower than a voltage value, the voltage-triggered switching switch is not actuated to close the working power supply channel. When the power supply of the green energy power supply module is greater than or equal to the voltage value, the switching switch is switched to open the working power supply channel. As described in claim 2, the green energy water production system, the sensing signal input end of the microprocessor is further connected to a high-pressure side pressure sensor and a low-pressure side pressure sensor. In the green energy water production system described in claim 2, the sensing signal input terminal of the microprocessor is further connected to an ambient humidity sensor. A wide-range power management method for a green energy water production system is mainly performed by a wide-range power management module described in any one of claims 1 to 5, and includes: tracking a green energy power; determining whether the green energy power is greater than or equal to a working voltage value; when the green energy power is greater than or equal to the working voltage value, using the green energy power as a working power source and continuously tracking its working voltage; reading an ambient temperature value and a built-in dew point temperature; and generating a fan drive signal and a compressor drive signal according to the working voltage of the green energy power, the ambient temperature value and the built-in dew point temperature. The wide-range power management method of the green energy water making system as described in claim 6 further includes: determining whether the green energy power generated by the green energy power supply module is less than or equal to a first working voltage value, if so, closing a working power channel and not supplying power to the wide-range power management module and the condensing water making equipment; determining whether the green energy power is equal to a second working voltage value, if so, opening the working power channel and supplying power to the wide-range power management module; determining whether the green energy power is greater than the second working voltage value, if so, using the green energy power as the working power supply to supply the condensing water making equipment; Determine whether the green energy power is further increased to a third working voltage value. If so, drive a fan unit to start at the lowest speed; then determine whether the green energy power is maintained at the third working voltage value. If so, drive the fan unit to gradually increase the speed; when the power is greater than the third working voltage value, drive the fan unit to reach the highest speed; determine whether the pressure difference between the high-pressure side and the low-pressure side of a compressor is normal. If so, switch the fan unit to the lowest speed and start the compressor at the lowest speed, then gradually increase its speed until it reaches the highest speed, and thus increase and maintain the speed of the fan unit. The wide-range power management method of the green energy water production system as described in claim 7 further includes: receiving the evaporator temperature of a condensing water production device, and controlling the evaporator temperature and a dew point temperature to a specific temperature difference. As described in claim 7, the wide-area power management method of the green energy water production system, the green energy power supply module is a solar panel. As described in claim 7, the wide-range power management method of the green energy water production system, the green energy power supply module is a wind turbine, when the green energy power is increased to the third working voltage value, a specific time is counted, and it is determined whether the power is maintained at the third working voltage value during the timing period. If so, the fan unit is driven to start at the lowest speed.

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