A nearly zero energy dehumidification system

Abstract

The invention discloses a near-zero energy consumption dehumidification system, which relates to the technical field of dehumidification equipment; wherein the rotary dehumidification unit comprises a dehumidification rotary wheel, a precooling surface cooler and a regeneration air surface cooler, the dehumidification rotary wheel has a dehumidification zone and a regeneration zone, the precooling surface cooler is used to precool the air flowing to the dehumidification zone, and the regeneration air surface cooler is used to heat and regenerate the regeneration zone; the solar heat collection device is used to provide a heat source for the regeneration air surface cooler; the indirect evaporative water chiller is used to provide a cold source for the precooling surface cooler; and the photovoltaic power generation device is used to provide electric energy for the rotary dehumidification unit, the solar heat collection device and the indirect evaporative water chiller. The invention can save energy, reduce costs, and reduce greenhouse gas emissions, thereby achieving the purpose of energy saving and environmental protection.

Description

Technical Field

[0001] The invention relates to the technical field of dehumidification equipment, and in particular to a near-zero energy consumption dehumidification system. Background Art

[0002] Dehumidification systems are necessary humidity control devices in offices, production sites and public places. Currently, the commonly used dehumidification systems basically use refrigeration dehumidification or rotary dehumidification. Among them, direct expansion dehumidifiers use electrically driven compressors to dehumidify the air, and can use the condensation heat of the compressor for reheating; for external cold and heat source dehumidifiers, their cold source comes from the cold source provided by the refrigeration host, and their heat source uses steam generated by electric heating or hot water boilers.

[0003] However, the cold source of the existing dehumidifier units is provided by an electrically cooled water chiller, which consumes huge energy and is expensive. Moreover, the heat source provision method of the existing dehumidifier units has at least the following disadvantages: heating is generated by burning fuel oil, gas or coal, which consumes non-renewable primary energy, and a large amount of greenhouse gases such as carbon dioxide are generated during the heating process, which is not conducive to environmental protection. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a near-zero energy consumption dehumidification system that can save energy, reduce costs, and reduce greenhouse gas emissions.

[0005] An embodiment of the present invention provides a near-zero energy consumption dehumidification system, which includes: A rotary dehumidifier unit, comprising a dehumidification rotary wheel, a precooling surface cooler and a regeneration air surface cooler, wherein the dehumidification rotary wheel has a dehumidification zone and a regeneration zone, the precooling surface cooler is used to precool the air flowing to the dehumidification zone, and the regeneration air surface cooler is used to heat and regenerate the regeneration zone; A solar heat collecting device, which is used to provide a heat source for the regenerative air cooler; An indirect evaporative water chiller, which is used to provide a cold source for the precooling surface cooler; The photovoltaic power generation device is used to provide electric energy for the rotary dehumidification unit, the solar heat collection device and the indirect evaporative chiller.

[0006] The near-zero energy consumption dehumidification system according to the embodiment of the present invention has at least the following beneficial effects: the solar thermal collector provides a heat source for the regenerative air cooler in the rotary dehumidifier unit by means of photothermal conversion, so that the regenerative air cooler can heat and regenerate the regeneration zone of the dehumidifier wheel, so that the dehumidifier wheel can restore the dehumidification function; the indirect evaporative water chiller provides a cold source for the pre-cooling cooler in the rotary dehumidifier unit by absorbing heat through evaporation of water, so that the pre-cooling cooler can pre-cool the air to be dehumidified, reduce the temperature of the air, and make the moisture in the air easier to precipitate; the photovoltaic power generation device provides power for the normal operation of the rotary dehumidifier unit, the solar thermal collector and the indirect evaporative water chiller by means of photoelectric conversion.

[0007] Through the above-mentioned structural design, the near-zero energy dehumidification system makes full use of the renewable energy sources of solar energy and air energy, which can save energy consumption, reduce costs, achieve the purpose of near-zero energy consumption, and effectively overcome the problems of primary energy consumption and environmental pollution caused by the existing technology for the supply of cold and heat sources for the dehumidification unit.

[0008] In some embodiments of the present invention, the rotary dehumidifier unit also includes a temperature-regulating surface cooler, which is used to regulate the temperature of the air flowing out of the dehumidification area. The temperature-regulating surface cooler has a heat exchange medium flow channel, and the heat exchange medium flow channel is connected to the solar energy collector or the indirect evaporative chiller.

[0009] In some embodiments of the present invention, the near-zero energy dehumidification system also includes a switching device, which is arranged between the heat exchange medium flow channel, the solar energy collection device and the indirect evaporative chiller, and the switching device is used to switch the heat exchange medium flow channel to be connected with the solar energy collection device, or the heat exchange medium flow channel to be connected with the indirect evaporative chiller.

[0010] In some embodiments of the present invention, the solar thermal collection device includes a thermal collector plate assembly, a hot water storage tank, a first water pump and a second water pump. The thermal collector plate assembly and the hot water storage tank are connected via a first circulation pipeline, and the first water pump is disposed on the first circulation pipeline. The hot water storage tank and the regenerative air cooler are connected via a second circulation pipeline, and the second water pump is disposed on the second circulation pipeline.

[0011] In some embodiments of the present invention, the solar thermal collector device also includes an emergency heat dissipation unit and a three-way valve, the emergency heat dissipation unit is provided with a water inlet and a water outlet, the three-way valve is arranged on the first circulation pipeline, the water outlet is connected to the water storage tank or the thermal collector plate assembly through a pipeline, and the water inlet is connected to the three-way valve through a pipeline.

[0012] In some embodiments of the present invention, the solar thermal collection device also includes a first temperature sensor, which is used to collect first water temperature data in the hot water storage tank, and the three-way valve is configured to switch on the water inlet end when the first water temperature data is greater than the first set temperature data.

[0013] In some embodiments of the present invention, the indirect evaporative chiller includes at least one indirect evaporative chiller and a third water pump, at least one of the indirect evaporative chillers is connected to the pre-cooling surface cooler through a third circulation pipeline, and the third water pump is arranged on the third circulation pipeline.

[0014] In some embodiments of the present invention, the indirect evaporative chiller also includes a cold water storage tank, a fourth water pump and a three-way regulating valve. The cold water storage tank, the fourth water pump and the three-way regulating valve are all arranged on the third circulation pipeline. The third water pump, the cold water storage tank, the fourth water pump and the three-way regulating valve are connected in series in sequence. The third water pump is arranged close to the inlet end of at least one of the indirect evaporative chillers, and the outlet end of at least one of the indirect evaporative chillers is connected to the three-way regulating valve through a bypass pipeline.

[0015] In some embodiments of the present invention, the indirect evaporative chiller also includes a second temperature sensor, which is used to collect second water temperature data in the cold water tank. The three-way regulating valve is configured to open the bypass line and adjust the flow in the bypass line when the second water temperature data is less than the second set temperature data.

[0016] In some embodiments of the present invention, the near-zero energy dehumidification system also includes a control device, the photovoltaic power generation device is electrically connected to the control device, and the control device is electrically connected to the rotary dehumidification unit, the solar thermal collection device and the indirect evaporative chiller, respectively.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a near-zero energy consumption dehumidification system provided according to an embodiment of the present invention; Figure 2 is a structural schematic diagram of a near-zero energy consumption dehumidification system provided according to another embodiment of the present invention; Figure 3 It is a structural schematic diagram of a near-zero energy consumption dehumidification system provided according to another embodiment of the present invention.

[0019] Reference numerals: 100, rotary dehumidifier unit; 110, housing; 120, dehumidification rotary wheel; 131, blower; 132, regeneration blower; 140, regeneration air cooler; 150, filter; 161, precooling cooler; 162, temperature regulating cooler; 200, solar heat collection device; 210, heat collection panel assembly; 220, hot water storage tank; 230, second water pump; 241, first water supply pipe; 242, first water return pipe; 250, first water pump; 260, emergency heat dissipation unit; 270, three-way valve; 300, indirect evaporative chiller; 310, indirect evaporative chiller; 320, third water pump; 331, second water supply pipe; 332, second water return pipe; 340, cold storage water tank; 350, fourth water pump; 360, three-way regulating valve; 400, photovoltaic power generation device; 410, photovoltaic panel; 420, solar controller; 430, battery; 440, inverter; 500, control device. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it is to be understood that a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Reference below Figures 1 to 3 A near-zero energy consumption dehumidification system provided according to an embodiment of the present invention is described.

[0024] like Figures 1 to 3As shown, the near-zero energy dehumidification system according to the embodiment of the present invention can play a good role in dehumidification and can be applied to the control of air humidity in various places. The near-zero energy dehumidification system has the advantages of low non-renewable energy consumption, low cost, low greenhouse gas emissions and environmental friendliness.

[0025] like Figures 1 to 3 As shown, the structure of the near-zero energy consumption dehumidification system includes a rotary dehumidification unit 100 , a solar thermal collector 200 , an indirect evaporative chiller 300 and a photovoltaic power generation device 400 .

[0026] The rotary dehumidifier unit 100 includes a housing 110 , a dehumidification rotary wheel 120 , a blower 131 , a regeneration blower 132 , a filter 150 , a precooling surface cooler 161 and a regeneration air surface cooler 140 .

[0027] The housing 110 is provided with a regeneration air channel and a dehumidification channel, and the dehumidification wheel 120 is arranged inside the housing 110. The dehumidification wheel 120 has a dehumidification zone and a regeneration zone. It can be understood that the portion of the dehumidification wheel 120 located in the regeneration air channel belongs to the regeneration zone, and the portion of the dehumidification wheel 120 located in the dehumidification channel belongs to the dehumidification zone. The dehumidification zone can dehumidify the air. The dehumidification effect of the regeneration zone is weaker than that of the dehumidification zone, and high-temperature gas is required to complete regeneration and restore the excellent dehumidification effect. The dehumidification wheel 120 is driven to rotate by a transmission motor, so that the dehumidified portion of the dehumidification wheel 120 can rotate to the regeneration air channel for heating regeneration, and at the same time, the regenerated portion of the dehumidification wheel 120 can rotate to the dehumidification channel to dehumidify the air.

[0028] The blower 131 is arranged in the dehumidification passage. When the blower 131 is in operation, the air can flow along the dehumidification passage under the driving action of the blower 131 and pass through the dehumidification zone of the dehumidification wheel 120 to complete the dehumidification work. The regeneration blower 132 is arranged in the regeneration air passage. When the regeneration blower 132 is in operation, the regeneration air can flow along the regeneration air passage under the driving action of the regeneration blower 132 and pass through the regeneration zone of the dehumidification wheel 120 to complete the regeneration work. The gas flow direction in the dehumidification passage is opposite to the gas flow direction in the regeneration air passage.

[0029] The inlet of the regeneration air channel and the inlet of the dehumidification channel are both provided with a filter 150. The filter 150 can be an existing high-efficiency air filter, which can filter impurities in the air to prevent impurities in the air from affecting the working effects of the pre-cooling surface cooler 161, the regeneration air surface cooler 140 and the dehumidification wheel 120.

[0030] The precooling cooler 161 is arranged in the dehumidification channel, and is arranged near the inlet of the dehumidification channel. The precooling cooler 161 is located between the dehumidification wheel 120 and the filter 150. The function of the precooling cooler 161 is to precool the air flowing to the dehumidification zone. It can be understood that when the blower 131 is working, the air to be dehumidified will flow into the dehumidification channel; the air first passes through the filter 150 to complete the filtering process; then, the air passes through the precooling cooler 161, causing the temperature of the air to drop, so that the amount of water vapor that can be contained in the air is reduced, so that the air is close to the saturated state or even precipitates water, thereby reducing the workload of the dehumidification wheel 120. Finally, the air passes through the dehumidification zone of the dehumidification wheel 120, and the water vapor in the air will be adsorbed by the hygroscopic material such as silica gel or molecular sieve on the dehumidification wheel 120.

[0031] The regeneration air cooler 140 is arranged in the regeneration air passage, and the regeneration air cooler 140 is arranged near the inlet of the regeneration air passage, and the regeneration air cooler 140 is located between the dehumidification wheel 120 and the filter 150. The function of the regeneration air cooler 140 is to heat and regenerate the regeneration zone. It can be understood that when the regeneration fan 132 is working, the regeneration air will flow into the regeneration air passage; the regeneration air will first pass through the filter 150 to remove impurities; then, the regeneration air passes through the regeneration air cooler 140, causing the temperature of the regeneration air to rise, so that the regeneration air can heat and raise the temperature of the regeneration zone of the dehumidification wheel 120, so that the dehumidification wheel 120 can complete the desorption work.

[0032] It is understandable that the precooling cooler 161 and the regeneration air cooler 140 are finned heat exchangers, and liquid such as water flows in the heat exchange tubes of the precooling cooler 161 and the regeneration air cooler 140. In this embodiment, the rotary dehumidifier unit 100 is a low-temperature regeneration device with a regeneration temperature not higher than 70°C.

[0033] The function of the solar thermal collector 200 is to provide a heat source for the regeneration air cooler 140. The solar thermal collector 200 collects solar energy through a heat collecting plate and converts the solar energy into thermal energy of water. The solar thermal collector 200 provides hot water for the regeneration air cooler 140, so that the regeneration air can exchange heat with the hot water, thereby increasing the temperature of the regeneration air.

[0034] The function of the indirect evaporative chiller 300 is to provide a cold source for the pre-cooling surface cooler 161. The indirect evaporative chiller 300 produces cooling water by the principle of heat absorption of water evaporation. The indirect evaporative chiller 300 provides cooling water for the pre-cooling surface cooler 161, so that the air can exchange heat with the cooling water before dehumidification, thereby reducing the temperature of the air.

[0035] The photovoltaic power generation device 400 is used to provide electric energy for the rotary dehumidifier unit 100, the solar thermal collector 200 and the indirect evaporative chiller 300. The photovoltaic power generation device 400 collects solar energy through the photovoltaic panel 410, converts the solar energy into electric energy, and supplies power to the electric components in the rotary dehumidifier unit 100, the solar thermal collector 200 and the indirect evaporative chiller 300, thereby reducing the consumption of city electricity and lowering the operating cost.

[0036] In this embodiment, the indirect evaporative chiller 300 produces high-temperature chilled water by absorbing heat through evaporation of water when the air has a large dry-bulb temperature difference, so as to serve as a cold source available to the rotary dehumidifier 100. The rotary dehumidifier 100 is a low-temperature regenerative rotary unit, which uses the heat source provided by the solar thermal collector 200 as a regenerative heat source, uses the electric energy provided by the photovoltaic power generation device 400 as a power source, uses the high-temperature cold water provided by the indirect evaporative chiller 300 as a cold source, and cooperates with the low-temperature regenerated dehumidification wheel 120 to complete the dehumidification work of the air passing through the dehumidification area of ​​the dehumidification wheel 120.

[0037] It can be understood that the near-zero energy consumption dehumidification system provided by the embodiment of the present invention organically integrates the solar thermal collector 200, the photovoltaic power generation device 400, the indirect evaporative chiller 300 and the rotary dehumidifier 100, so that the solar thermal collector 200 converts solar energy into the heat source required by the rotary dehumidifier 100, the photovoltaic power generation device 400 converts solar energy into electrical energy and supplies it to the rotary dehumidifier 100, the indirect evaporative chiller 300 and the solar thermal collector 200, and the indirect evaporative chiller 300 produces the cold source required by the rotary dehumidifier 100 from dry air by evaporation of water; by utilizing the renewable energy sources of solar energy and dry air energy, and cooperating with the low-temperature rotary dehumidifier 100, the problem of energy consumption and air pollution caused by burning non-renewable energy or consuming grid electricity to provide heat source for the rotary dehumidifier 100 in the prior art is overcome.

[0038] In some embodiments, the structure of the near-zero energy consumption dehumidification system further includes a control device 500. The photovoltaic power generation device 400 is electrically connected to the control device 500 through a line, and the control device 500 is electrically connected to the rotary dehumidification unit 100, the solar thermal collector 200, and the indirect evaporative chiller 300. The control device 500 can be, but is not limited to, a PLC controller.

[0039] It is understandable that the photovoltaic power generation device 400 provides power to the control device 500, and the control device 500 distributes the electric energy to the various power-consuming components in the rotary dehumidifier unit 100, the solar thermal collector 200, and the indirect evaporative chiller 300. The control device 500 can realize the power supply and coordination of the rotary dehumidifier unit 100, the solar thermal collector 200, the indirect evaporative chiller 300, and the photovoltaic power generation device 400.

[0040] In this embodiment, the photovoltaic power generation device 400 includes a photovoltaic panel 410, a solar controller 420, a battery 430, and an inverter 440. The number of the photovoltaic panel 410 is not limited to one, the photovoltaic panel 410 is electrically connected to the solar controller 420, the battery 430 and the inverter 440 are electrically connected to the solar controller 420, and the inverter 440 is electrically connected to the control device 500 through a line.

[0041] It can be understood that the photovoltaic power generation device 400 is a closed-loop system. The photovoltaic panel 410 can realize photoelectric conversion under the control of the solar controller 420 and charge the battery 430. At the same time, the inverter 440 can provide power to the control device 500, allowing the control device 500 to reasonably distribute the electrical energy to various electrical equipment in the near-zero energy dehumidification system to ensure that they can operate normally.

[0042] In some embodiments, the rotary dehumidifier unit 100 further includes a temperature-adjusting cooler 162. The temperature-adjusting cooler 162 is disposed in the dehumidification channel, and the temperature-adjusting cooler 162 is disposed near the outlet of the dehumidification channel. The temperature-adjusting cooler 162 and the pre-cooling cooler 161 are respectively located on opposite sides of the dehumidification wheel 120. The temperature-adjusting cooler 162 is used to adjust the temperature of the air flowing out of the dehumidification area of ​​the dehumidification wheel 120 so that the temperature of the dehumidified air can meet the needs of the user. Specifically, the temperature-adjusting cooler 162 has a heat exchange medium flow channel, and the heat exchange medium flow channel is connected to the solar thermal collector 200 or the indirect evaporative chiller 300.

[0043] It is understood that, in a specific embodiment, Figure 1 As shown, the indirect evaporative water chiller 300 is connected to the heat exchange medium flow channel of the thermostatic surface cooler 162, so that the indirect evaporative water chiller 300 provides a cold source for the thermostatic surface cooler 162. Then, the air after dehumidification will flow to the thermostatic surface cooler 162, and the air will exchange heat with the cold source of the thermostatic surface cooler 162, so that the temperature of the air can be reduced to the set requirement, thereby achieving the temperature reduction regulation of the dehumidified air. The thermostatic surface cooler 162 and the pre-cooling surface cooler 161 are arranged in parallel and connected to the indirect evaporative water chiller 300, so that the indirect evaporative water chiller 300 provides a cold source for both the thermostatic surface cooler 162 and the pre-cooling surface cooler 161.

[0044] In another specific embodiment, Figure 2 and Figure 3 As shown, the solar thermal collector 200 is connected to the heat exchange medium flow channel of the thermostatic cooler 162, so that the solar thermal collector 200 provides a heat source for the thermostatic cooler 162, so as to heat up and send out the dehumidified air according to demand. Then, the air flowing out of the dehumidification zone of the dehumidification wheel 120 will flow to the thermostatic cooler 162, and the air will exchange heat with the heat source of the thermostatic cooler 162, so that the temperature of the air can rise to the set requirement, thereby achieving the temperature increase and regulation of the dehumidified air. The thermostatic cooler 162 and the regenerative air cooler 140 are arranged in parallel and connected to the solar thermal collector 200, so that the solar thermal collector 200 can provide a heat source to the thermostatic cooler 162 and the regenerative air cooler 140 at the same time.

[0045] In other embodiments, the near-zero energy dehumidification system further includes a switching device.

[0046] The heat exchange medium flow channel of the temperature-adjusting surface cooler 162 is respectively connected to the solar thermal collector 200 and the indirect evaporative chiller 300, and the switching device is arranged between the heat exchange medium flow channel, the solar thermal collector 200 and the indirect evaporative chiller 300. The switching device is used to switch the heat exchange medium flow channel to be connected to the solar thermal collector 200, or the heat exchange medium flow channel to be connected to the indirect evaporative chiller 300. Specifically, the switching device can be a switching valve, which can control the heat exchange medium flow channel to be switched to one of the solar thermal collector 200 and the indirect evaporative chiller 300, so that the temperature-adjusting surface cooler 162 can obtain a heat source or a cold source, thereby performing temperature adjustment on the dehumidified air.

[0047] In some embodiments, Figures 1 to 3 As shown, the solar thermal collector 200 includes a thermal collector plate assembly 210 , a hot water storage tank 220 , a first water pump 250 and a second water pump 230 .

[0048] The heat collecting plate assembly 210 is connected to the heat storage tank 220 through a first circulation pipeline, and the first water pump 250 is arranged on the first circulation pipeline. When the first water pump 250 is running, the first water pump 250 can provide a driving force for the flow of liquid such as water in the first circulation pipeline. The heat storage tank 220 is connected to the regenerative air cooler 140 through a second circulation pipeline, and the second water pump 230 is arranged on the second circulation pipeline. When the second water pump 230 is working, the second water pump 230 can provide a driving force for the flow of liquid such as water in the second circulation pipeline.

[0049] Specifically, the number of the heat collecting panel assembly 210 is not limited to one, and the heat collecting panel assembly 210 includes a solar heat collecting panel, which can absorb sunlight incident through the transparent cover layer and convert the light energy into heat energy of a heat collecting fluid such as water.

[0050] The hot water storage tank 220 is provided with a first water inlet, a second water inlet, a first water outlet and a second water outlet. The first water outlet of the hot water storage tank 220, the first water pump 250 and the fluid inlet of the heat collecting plate assembly 210 are connected in sequence through pipelines, and the fluid outlet of the heat collecting plate assembly 210 and the first water inlet of the hot water storage tank 220 are connected through pipelines. The second water outlet of the hot water storage tank 220 is connected to a first water supply pipe 241, and the second water inlet of the hot water storage tank 220 is connected to a first water return pipe 242. The first water supply pipe 241 is connected to the inlet of the regenerative air cooler 140, and the first water return pipe 242 is connected to the outlet of the regenerative air cooler 140.

[0051] The solar thermal collector device 200 is a closed-loop system. When the first water pump 250 is running, the first water pump 250 can extract water from the hot water storage tank 220 and transport it in the direction of the collector plate assembly 210. The water will be heated when flowing through the collector plate assembly 210, so that the water temperature will increase. Then, the heated water will return to the hot water storage tank 220. Therefore, the water can circulate between the collector plate assembly 210 and the hot water storage tank 220 and transfer heat from the collector plate assembly 210 to the hot water storage tank 220.

[0052] At the same time, the second water pump 230 works and can extract hot water in the hot water storage tank 220 and transport the hot water in the direction of the regeneration air cooler 140; when the hot water flows through the regeneration air cooler 140, it will exchange heat with the regeneration air, causing the temperature of the regeneration air to rise and the temperature of the hot water to drop. Then, the hot water will return to the hot water storage tank 220. Therefore, water can circulate between the hot water storage tank 220 and the regeneration air cooler 140 and transfer heat from the hot water storage tank 220 to the regeneration air cooler 140.

[0053] In the case where a temperature-controlled surface cooler 162 is provided and the temperature-controlled surface cooler 162 is connected to the solar thermal collector 200, Figure 2 As shown, the inlet of the thermostatic cooler 162 is connected to the first water supply pipe 241 , and the outlet of the thermostatic cooler 162 is connected to the first water return pipe 242 , so that hot water can flow into the thermostatic cooler 162 to provide heat for the thermostatic cooler 162 .

[0054] Further, such as Figures 1 to 3 As shown, the solar thermal collector 200 further includes an emergency heat dissipation unit 260 and a three-way valve 270 .

[0055] Among them, the emergency heat dissipation unit 260 is provided with a water inlet and a water outlet, the three-way valve 270 is arranged on the first circulation pipeline, the water outlet of the emergency heat dissipation unit 260 is connected to the hot water storage tank 220 or the collector plate assembly 210 through a pipeline, and the water inlet of the emergency heat dissipation unit 260 is connected to the three-way valve 270 through a pipeline.

[0056] It is understandable that the function of the emergency heat dissipation unit 260 is to reduce the temperature of hot water to prevent the hot water temperature in the hot water storage tank 220 from being too high. The emergency heat dissipation unit 260 cools down the hot water by air cooling. Specifically, the emergency heat dissipation unit 260 includes a housing, a coil and a fan. The coil and the fan are arranged in the housing. The housing is provided with an air inlet and an air outlet. The inlet of the coil is connected to the three-way valve 270 through a pipeline, and the outlet of the coil is connected to the inside of the hot water storage tank 220 through a pipeline. Through the switching action of the three-way valve 270, water can flow into the emergency heat dissipation unit 260, and the water and air are heat exchanged to appropriately reduce the temperature of the water.

[0057] In this embodiment, the three-way valve 270 is arranged between the fluid outlet of the heat collecting plate assembly 210 and the first water inlet of the heat storage tank 220, the inlet of the three-way valve 270 is connected to the fluid outlet of the heat collecting plate assembly 210 through a pipeline, the first outlet of the three-way valve 270 is connected to the first water inlet of the heat storage tank 220 through a pipeline, the second outlet of the three-way valve 270 is connected to the water inlet end of the emergency heat dissipation unit 260 through a pipeline, and the water outlet end of the emergency heat dissipation unit 260 is connected to the heat storage tank 220 through a pipeline.

[0058] Then, when the water temperature in the hot water storage tank 220 is too high, the three-way valve 270 is switched to the emergency heat dissipation unit 260, so that the hot water flowing out of the heat collecting plate assembly 210 will flow into the emergency heat dissipation unit 260, and after being cooled by air cooling, the hot water will return to the hot water storage tank 220. When the water temperature in the hot water storage tank 220 does not exceed the set value, the three-way valve 270 does not switch to the emergency heat dissipation unit 260. At this time, the emergency heat dissipation unit 260 is in a shutdown state, and the hot water flowing out of the heat collecting plate assembly 210 will directly flow into the hot water storage tank 220.

[0059] Of course, it is not excluded that in other embodiments, the three-way valve 270 is arranged between the fluid inlet of the heat collecting plate assembly 210 and the first water outlet of the heat storage tank 220, the inlet of the three-way valve 270 is connected to the first water outlet of the heat storage tank 220, the first outlet of the three-way valve 270 is connected to the fluid inlet of the heat collecting plate assembly 210, the second outlet of the three-way valve 270 is connected to the water inlet end of the emergency heat dissipation unit 260, and the water outlet end of the emergency heat dissipation unit 260 is connected to the fluid inlet of the heat collecting plate assembly 210.

[0060] Then, when the temperature of the hot water in the hot water storage tank 220 exceeds the set value, the three-way valve 270 switches to the emergency heat dissipation unit 260, so that the hot water flowing out of the hot water storage tank 220 will first flow into the emergency heat dissipation unit 260, causing the temperature of the hot water to drop to a certain extent; then, the hot water flows to the solar collector assembly 210 and absorbs the heat from the sunlight, causing the temperature of the hot water to rise; finally, the hot water returns to the hot water storage tank 220.

[0061] Furthermore, the solar thermal collector 200 also includes a first temperature sensor.

[0062] Among them, the first temperature sensor is arranged in the hot water storage tank 220, and the function of the first temperature sensor is to collect the first water temperature data in the hot water storage tank 220. The first temperature sensor, the three-way valve 270 and the emergency heat dissipation unit 260 are electrically connected to the control device 500 respectively. The first temperature sensor transmits the collected first water temperature data to the control device 500, and the control device 500 determines the comparison result between the first water temperature data and the first set temperature data. If the first water temperature data is greater than the first set temperature data, the control device 500 sends a control instruction to the three-way valve 270 and the emergency heat dissipation unit 260, so that the three-way valve 270 can switch and the emergency heat dissipation unit 260 can operate. The three-way valve 270 is configured to switch the water inlet end of the emergency heat dissipation unit 260 when the first water temperature data is greater than the first set temperature data, so that hot water can flow into the emergency heat dissipation unit 260, so that the temperature of the hot water can be reduced, and the water temperature in the hot water storage tank 220 is prevented from being too high.

[0063] In some embodiments, Figure 1 and Figure 2 As shown, the indirect evaporative chiller 300 includes at least one indirect evaporative chiller 310 and a third water pump 320 .

[0064] Among them, at least one indirect evaporative chiller 310 is connected to the precooling surface cooler 161 through a third circulation pipeline, and the third water pump 320 is arranged on the third circulation pipeline. Specifically, the outlet of the indirect evaporative chiller 310 is connected to the second water supply pipe 331, and the inlet of the indirect evaporative chiller 310 is connected to the second water return pipe 332, the second water supply pipe 331 is connected to the inlet of the precooling surface cooler 161, and the second water return pipe 332 is connected to the outlet of the precooling surface cooler 161. The third water pump 320 is arranged on the second water supply pipe 331.

[0065] When the third water pump 320 is running, the cooling water produced by the indirect evaporative chiller 310 can flow to the precooling cooler 161 to provide cooling capacity, and the cooling water exchanges heat with the air to be dehumidified flowing to the precooling cooler 161, so that the temperature of the cooling water increases; then, the cooling water returns to the indirect evaporative chiller 310 for cooling. Therefore, the cooling water can circulate between the indirect evaporative chiller 310 and the precooling cooler 161, and transfer heat from the precooling cooler 161 to the indirect evaporative chiller 310. The indirect evaporative chiller 300 can cool the returned cooling water according to the water temperature control requirements (that is, the cold source requirements of the rotary dehumidifier 100).

[0066] In the case where a temperature-controlled surface cooler 162 is provided and the temperature-controlled surface cooler 162 is connected to the indirect evaporative water chiller 300, Figure 1 As shown, the inlet of the temperature-controlled surface cooler 162 is connected to the second water supply pipe 331 , and the outlet of the temperature-controlled surface cooler 162 is connected to the second water return pipe 332 , so that cooling water can flow into the temperature-controlled surface cooler 162 to provide cooling capacity for the temperature-controlled surface cooler 162 .

[0067] In some embodiments, Figure 3 As shown, the indirect evaporative chiller 300 further includes a cold water storage tank 340 , a fourth water pump 350 and a three-way regulating valve 360 ​​.

[0068] The cold water storage tank 340, the fourth water pump 350 and the three-way regulating valve 360 ​​are all arranged on the third circulation pipeline, the third water pump 320, the cold water storage tank 340, the fourth water pump 350 and the three-way regulating valve 360 ​​are sequentially connected in series through the pipeline, and the third water pump 320 is arranged near the inlet end of at least one indirect evaporative chiller 310. Therefore, the cooling water flowing out of the indirect evaporative chiller 310 will flow through the third water pump 320, the cold water storage tank 340, the fourth water pump 350 and the three-way regulating valve 360 ​​in sequence, and flow into the pre-cooling surface cooler 161; the cooling water returns to the indirect evaporative chiller 310 after completing the heat exchange in the pre-cooling surface cooler 161. Moreover, the outlet end of at least one indirect evaporative chiller 310 is connected to the three-way regulating valve 360 ​​through a bypass pipeline, so that the cooling water flowing out of the cold storage water tank 340 can flow to one of the pre-cooling surface cooler 161 and the bypass pipeline, or flow into the pre-cooling surface cooler 161 and the bypass pipeline respectively.

[0069] In this embodiment, the third water pump 320, the cold water storage tank 340, the second water pump 230 and the three-way regulating valve 360 ​​are all installed on the second water supply pipe 331, the inlet of the three-way regulating valve 360 ​​is connected to the outlet of the second water pump 230 through a pipeline, the first outlet of the three-way regulating valve 360 ​​is connected to the inlet of the precooling surface cooler 161 through a pipeline, one end of the bypass pipeline is connected to the second outlet of the three-way regulating valve 360, and the other end of the bypass pipeline is connected to the second return water pipe 332.

[0070] It can be understood that when the cooling capacity of the indirect evaporative chiller 300 is greater than the cooling capacity consumed by the rotary dehumidifier 100, the opening of the three-way regulating valve 360 ​​can be controlled so that a part of the cooling water flowing out of the cold water tank 340 passes through the first outlet of the three-way regulating valve 360 ​​and enters the pre-cooling surface cooler 161 of the rotary dehumidifier 100. After completing the heat exchange, the cooling water will flow to the second return pipe 332. The other part of the cooling water flowing out of the cold water tank 340 passes through the second outlet and the bypass line of the three-way regulating valve 360 ​​in turn, and is mixed with the cooling water in the second return pipe 332, and then returns to the indirect evaporative chiller 310.

[0071] When a temperature-controlled surface cooler 162 is provided and connected to the indirect evaporative chiller 300 , a portion of the cooling water flowing out of the cold storage water tank 340 enters the pre-cooling surface cooler 161 and the temperature-controlled surface cooler 162 of the rotary dehumidification unit 100 through the first outlet of the three-way regulating valve 360 ​​.

[0072] Furthermore, the indirect evaporative chiller 300 also includes a second temperature sensor.

[0073] Among them, the second temperature sensor is arranged in the cold storage water tank 340. The function of the second temperature sensor is to collect the second water temperature data in the cold storage water tank 340. The second temperature sensor and the three-way regulating valve 360 ​​are respectively electrically connected to the control device 500. The second temperature sensor transmits the collected second water temperature data to the control device 500. The control device 500 determines the comparison result between the second water temperature data and the second set temperature data. If the second water temperature data is less than the second set temperature data, the control device 500 sends a control instruction to the three-way regulating valve 360, so that the three-way regulating valve 360 ​​can be operated to adjust its opening size. The three-way regulating valve 360 ​​is configured to conduct the bypass pipeline when the second water temperature data is less than the second set temperature data, and adjust the flow in the bypass pipeline, so as to adjust the cold amount flowing to the pre-cooling surface cooler 161, so as to avoid the air in the dehumidification channel from having too low a temperature after cooling.

[0074] It is understandable that a third temperature sensor is provided in the dehumidification channel and the regeneration air channel of the rotary dehumidification unit 100 to detect the real-time temperature of the air.

[0075] In some embodiments, the indirect evaporative chiller 300 can provide cooling for the photovoltaic power generation device 400 to cool the photovoltaic panel 410 of the photovoltaic power generation device 400, ensure that the photovoltaic panel 410 has high power generation efficiency, and avoid the temperature of the photovoltaic panel 410 being too high and affecting the power generation efficiency.

[0076] In the near-zero energy consumption dehumidification system provided by the embodiment of the present invention, the solar thermal collector 200 and the photovoltaic power generation device 400 can work independently and store energy through their own energy storage devices such as the hot water storage tank 220 and the battery 430, and the indirect evaporative chiller 300 and the rotary dehumidifier 100 work together. The rotary dehumidifier 100 uses a low-temperature regenerated dehumidification wheel 120, which can treat the air to a lower humidity than the refrigeration dehumidifier, which can make up for the traditional high-temperature regenerated rotary dehumidifier 100's strict requirements for high-grade cold and heat sources, and the power consumption during the dehumidification process is much lower than that of the traditional dehumidifier.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0078] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A near-zero energy consumption dehumidification system, characterized in that: include: A rotary dehumidifier unit, comprising a dehumidification rotary wheel, a precooling surface cooler and a regeneration air surface cooler, wherein the dehumidification rotary wheel has a dehumidification zone and a regeneration zone, the precooling surface cooler is used to precool the air flowing to the dehumidification zone, and the regeneration air surface cooler is used to heat and regenerate the regeneration zone; A solar heat collecting device, which is used to provide a heat source for the regenerative air cooler; An indirect evaporative water chiller, which is used to provide a cold source for the precooling surface cooler; The photovoltaic power generation device is used to provide electric energy for the rotary dehumidification unit, the solar heat collection device and the indirect evaporative chiller.

2. The near-zero energy consumption dehumidification system according to claim 1, characterized in that: The rotary dehumidifier unit also includes a temperature-adjustable surface cooler, which is used to adjust the temperature of the air flowing out of the dehumidification area. The temperature-adjustable surface cooler has a heat exchange medium flow channel, and the heat exchange medium flow channel is connected to the solar energy collector or the indirect evaporative chiller.

3. The near-zero energy consumption dehumidification system according to claim 2, characterized in that: It also includes a switching device, which is arranged between the heat exchange medium flow channel, the solar energy collector and the indirect evaporative chiller, and is used to switch the heat exchange medium flow channel to be connected to the solar energy collector, or the heat exchange medium flow channel to be connected to the indirect evaporative chiller.

4. The near-zero energy consumption dehumidification system according to claim 1, characterized in that: The solar thermal collector device includes a heat collecting plate assembly, a heat storage tank, a first water pump and a second water pump. The heat collecting plate assembly and the heat storage tank are connected via a first circulation pipeline, and the first water pump is arranged on the first circulation pipeline. The heat storage tank and the regenerative air cooler are connected via a second circulation pipeline, and the second water pump is arranged on the second circulation pipeline.

5. The near-zero energy consumption dehumidification system according to claim 4, characterized in that: The solar thermal collector device also includes an emergency heat dissipation unit and a three-way valve. The emergency heat dissipation unit is provided with a water inlet and a water outlet. The three-way valve is arranged on the first circulation pipeline. The water outlet is connected to the hot water storage tank or the thermal collector plate assembly through a pipeline, and the water inlet is connected to the three-way valve through a pipeline.

6. The near-zero energy consumption dehumidification system according to claim 5, characterized in that: The solar thermal collector also includes a first temperature sensor, which is used to collect first water temperature data in the hot water storage tank. The three-way valve is configured to switch on the water inlet when the first water temperature data is greater than a first set temperature data.

7. The near-zero energy consumption dehumidification system according to claim 1, characterized in that: The indirect evaporative chiller includes at least one indirect evaporative chiller and a third water pump. At least one of the indirect evaporative chillers is connected to the precooling surface cooler via a third circulation pipeline, and the third water pump is arranged on the third circulation pipeline.

8. The near-zero energy consumption dehumidification system according to claim 7, characterized in that: The indirect evaporative chiller also includes a cold water tank, a fourth water pump and a three-way regulating valve. The cold water tank, the fourth water pump and the three-way regulating valve are all arranged on the third circulation pipeline. The third water pump, the cold water tank, the fourth water pump and the three-way regulating valve are connected in series in sequence. The third water pump is arranged close to the inlet end of at least one of the indirect evaporative chillers, and the outlet end of at least one of the indirect evaporative chillers is connected to the three-way regulating valve through a bypass pipeline.

9. The near-zero energy consumption dehumidification system according to claim 8, characterized in that: The indirect evaporative chiller also includes a second temperature sensor, which is used to collect second water temperature data in the cold water tank. The three-way regulating valve is configured to open the bypass pipeline and adjust the flow in the bypass pipeline when the second water temperature data is less than the second set temperature data.

10. The near-zero energy consumption dehumidification system according to claim 1, characterized in that: It also includes a control device, the photovoltaic power generation device is electrically connected to the control device, and the control device is electrically connected to the rotary dehumidification unit, the solar energy collection device and the indirect evaporative chiller respectively.

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