Dehumidification system and method for recovering waste heat from air compressor using natural wind

Abstract

The present application relates to the technical field of air compressor waste heat recovery, and in particular to a dehumidification system and method for recovering air compressor waste heat using natural wind. The dehumidification system includes an air compression system, a solution dehumidification system, and an air conditioning system. The solution dehumidification system includes a regenerator, a first solution dehumidifier, a second solution dehumidifier, and an air supply pipe. The air supply pipe guides the air flow after passing through the first heat exchanger and the second heat exchanger to the air inlet of the regenerator. The liquid inlet of the first solution dehumidifier and the liquid inlet of the second solution dehumidifier are both connected to the concentrated solution outlet of the regenerator. The liquid outlet of the first solution dehumidifier and the liquid outlet of the second solution dehumidifier are both connected to the dilute solution inlet of the regenerator. The air outlet of the first solution dehumidifier is connected to the air intake of the air compression system. The waste heat generated by the cooling process of compressed air and lubricating oil is recovered by natural wind to drive the regeneration of the dehumidification solution. The regenerated concentrated solution is used for dehumidification of the compressed air inlet and the air conditioning system, thereby reducing the dehumidification energy consumption.

Description

Technical Field

[0001] The present application relates to the technical field of air compressor waste heat recovery, and in particular to a dehumidification system and method for recovering air compressor waste heat using natural wind. Background Art

[0002] Air compression systems, dehumidification systems, and air conditioning systems, as independent energy systems, waste significant energy during use. In related technologies, air compressors, as pneumatic devices with high energy consumption, have their energy consumption and efficiency affected by intake parameters, with intake temperature and humidity being particularly significant. When the air compressor draws in high-temperature, high-humidity air for compression, the exhaust volume and pressure decrease, increasing energy consumption. Generally, only 15% of the energy consumed during air compressor operation is converted into air potential energy, while the remaining 85% is converted into heat energy, which is ultimately dissipated into the environment through water or air. This not only wastes energy but also creates thermal pollution. In traditional air conditioning systems, temperature and humidity are processed together. To meet humidity requirements, condensation dehumidification is often used. The cold water temperature must be lower than the air dew point. This condensation dehumidification method not only requires a low evaporation temperature for the refrigeration unit, resulting in energy waste, but also generates large amounts of condensed water and mold during equipment operation, seriously affecting indoor air quality.

[0003] It can be seen that in the relevant technologies, the air compression system, dehumidification system and air-conditioning system cannot be jointly controlled and energy complementarity cannot be achieved, resulting in high comprehensive energy consumption of each system. Summary of the Invention

[0004] The present application provides a dehumidification system and method for recovering waste heat from an air compressor using natural wind, in order to achieve joint regulation of the air compression system, dehumidification system and air conditioning system, realize energy complementarity and reduce the overall energy consumption of the system.

[0005] In a first aspect, an embodiment of the present application provides a dehumidification system for recovering waste heat from an air compressor using natural wind, the dehumidification system comprising:

[0006] An air compression system comprising a first heat exchanger for cooling lubricating oil, a second heat exchanger for cooling compressed gas, a first fan for driving natural wind through the first heat exchanger, and a second fan for driving natural wind through the second heat exchanger;

[0007] A solution dehumidification system, comprising a regenerator, a first solution dehumidifier, a second solution dehumidifier, and an air supply pipe, wherein the air supply pipe is used to guide the airflow after passing through the first heat exchanger and the second heat exchanger to the air inlet of the regenerator, the liquid inlet of the first solution dehumidifier and the liquid inlet of the second solution dehumidifier are both connected to the concentrated solution outlet of the regenerator, the liquid outlet of the first solution dehumidifier and the liquid outlet of the second solution dehumidifier are both connected to the dilute solution inlet of the regenerator, and the air outlet of the first solution dehumidifier is connected to the air intake of the air compression system;

[0008] The air conditioning system comprises an exhaust pipe, wherein the exhaust pipe connects the exhaust of the air conditioning system with the air inlet of the first solution dehumidifier, and the second solution dehumidifier is used for dehumidifying the air flow passing through the air conditioning system.

[0009] Furthermore, the concentrated solution outlet of the regenerator is connected to a first liquid storage tank, the first liquid storage tank is connected to the first solution dehumidifier through a first concentrated solution pipe, and the first liquid storage tank is connected to the second solution dehumidifier through a second concentrated solution pipe.

[0010] Furthermore, the dilute solution inlet of the regenerator is connected to a second liquid storage tank, the second liquid storage tank is connected to the first solution dehumidifier through a first dilute solution pipe, and the second liquid storage tank is connected to the second solution dehumidifier through a second dilute solution pipe.

[0011] Furthermore, a first regulating valve is provided on the first concentrated solution pipe, and a second regulating valve is provided on the second concentrated solution pipe.

[0012] Furthermore, the dehumidification system for recovering waste heat from the air compressor using natural wind also includes a monitoring module, which includes:

[0013] a first temperature sensor, disposed on the exhaust pipe, for obtaining the temperature of exhaust air from the air conditioning system;

[0014] a second temperature sensor, disposed at the air inlet end of the first solution dehumidifier, for obtaining the air temperature in the atmospheric environment;

[0015] The third temperature sensor is provided on the oil return pipeline connected to the oil outlet end of the first heat exchanger, and is used to detect the return oil temperature of the lubricating oil.

[0016] Furthermore, the monitoring module further includes:

[0017] a first temperature and humidity sensor, disposed between the first solution dehumidifier and the air compression system;

[0018] a second temperature and humidity sensor, disposed between the air outlet side of the second liquid dehumidifier and the heat exchanger of the air conditioning system;

[0019] The third temperature and humidity sensor is arranged at the air outlet of the air conditioning system.

[0020] In a second aspect, an embodiment of the present application provides a dehumidification method for recovering waste heat from an air compressor using natural wind, which is applied to the dehumidification system for recovering waste heat from an air compressor using natural wind provided in the first aspect of the present application. The dehumidification method includes:

[0021] The exhaust temperature of the air conditioning system is detected as T1 and the air temperature in the atmospheric environment is set as T2;

[0022] If T1≤T2, the exhaust pipe is opened, and the exhaust air of the air conditioning system is introduced into the first solution dehumidifier through the exhaust pipe;

[0023] If T1>T2, the exhaust pipe is closed, and air in the atmospheric environment is introduced into the first solution dehumidifier.

[0024] In a third aspect, an embodiment of the present application provides a dehumidification method for recovering waste heat from an air compressor using natural wind, which is applied to the dehumidification system for recovering waste heat from an air compressor using natural wind provided in the first aspect of the present application. The dehumidification method includes:

[0025] detecting a return oil temperature T3 of the lubricating oil in the return oil pipeline connected to the oil outlet end of the first heat exchanger, and obtaining a preset return oil temperature T4 and a preset return oil temperature deviation value ΔT5;

[0026] If T3>T4+ΔT5 is continuously satisfied within the preset time, the frequency of the first fan is increased once;

[0027] If T3 < T4 - ΔT5 is continuously satisfied within the preset time, the frequency of the first fan is reduced once;

[0028] If T4+ΔT5≥T3≥T4-ΔT5 is continuously satisfied within the preset time, the frequency of the first fan remains unchanged.

[0029] In a fourth aspect, an embodiment of the present application provides a dehumidification method for recovering waste heat from an air compressor using natural wind, which is applied to the dehumidification system for recovering waste heat from an air compressor using natural wind provided in the first aspect of the present application. The concentrated solution outlet of the regenerator is connected to a first liquid storage tank, the first liquid storage tank is connected to the first solution dehumidifier through a first concentrated solution pipe, and the first liquid storage tank is connected to the second solution dehumidifier through a second concentrated solution pipe. The solution dehumidification system also includes a concentrated solution pump provided on the outlet side of the first liquid storage tank. The dehumidification method includes:

[0030] Controlling the air compression system to operate and the air conditioning system to stop, the first concentrated solution pipe to be connected and the second concentrated solution pipe to be blocked;

[0031] Detecting the relative humidity φ1 of the air entering the air compression system, and obtaining a preset relative humidity φ2 and a preset relative humidity deviation value Δφ3 of the air entering the air compression system;

[0032] If φ1>φ2+Δφ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump is increased once;

[0033] If φ1<φ2-Δφ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump is reduced once;

[0034] If φ2+Δφ3≥φ1≥φ2-Δφ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump remains unchanged.

[0035] In a fifth aspect, an embodiment of the present application provides a dehumidification method for recovering waste heat from an air compressor using natural wind, which is applied to the dehumidification system for recovering waste heat from an air compressor using natural wind provided in the first aspect of the present application. The concentrated solution outlet of the regenerator is connected to a first liquid storage tank, the first liquid storage tank is connected to the first solution dehumidifier through a first concentrated solution pipe, and the first liquid storage tank is connected to the second solution dehumidifier through a second concentrated solution pipe. The air conditioning system also includes a surface cooler, a chilled water supply pipe, a chilled water return pipe, and a chilled water pump. The dehumidification method includes:

[0036] Controlling the air compression system to stop and the air conditioning system to operate, the first concentrated solution pipe to be cut off and the second concentrated solution pipe to be connected;

[0037] The flow rate of the concentrated solution is adjusted by changing the frequency of the concentrated solution pump, and the flow rate of the chilled water is adjusted by changing the frequency of the chilled water pump.

[0038] Furthermore, the dehumidification method further comprises:

[0039] Detecting the relative humidity φ4 of the air entering the cooler, and obtaining a preset relative humidity φ5 and a preset relative humidity deviation value Δφ6 of the air entering the cooler;

[0040] If φ4>φ5+Δφ6 is continuously satisfied within the preset time, the frequency of the concentrated solution pump is increased once;

[0041] If φ4<φ5-Δφ6 is continuously satisfied within the preset time, the frequency of the concentrated solution pump is reduced once;

[0042] If φ5+Δφ6≥φ4≥φ5-Δφ6 is continuously satisfied within the preset time, the frequency of the concentrated solution pump remains unchanged.

[0043] Furthermore, the dehumidification method further comprises:

[0044] Detecting the air supply temperature T6 and relative humidity φ7 at the air supply outlet of the air conditioning system, obtaining the air supply target temperature T7, the preset air supply temperature deviation ΔT8, the preset relative humidity φ8, and the preset relative humidity deviation value Δφ9 at the air supply outlet of the air conditioning system;

[0045] If T6>T7+ΔT8 or φ7>φ8+Δφ9 is continuously satisfied within the preset time, the frequency of the chilled water pump is increased once;

[0046] If T6<T7-ΔT8 and φ7<φ8-Δφ9 are continuously satisfied within the preset time, the frequency of the chilled water pump is reduced once;

[0047] If T7+ΔT8≥T6≥T7-ΔT8 and φ8+Δφ9≥φ7≥φ8-Δφ9 are continuously satisfied within the preset time, the frequency of the chilled water pump remains unchanged.

[0048] Furthermore, the dehumidification method further comprises:

[0049] If the condition T6>T7+ΔT8 is continuously satisfied within a preset time after the frequency of the chilled water pump reaches the upper limit of operation, the supply temperature of the chilled water is reduced;

[0050] If T6<T7-ΔT8 is continuously satisfied within a preset time after the frequency of the chilled water pump reaches the lower operating limit, the supply temperature of the chilled water is increased.

[0051] In a sixth aspect, an embodiment of the present application provides a dehumidification method for recovering waste heat from an air compressor using natural wind, which is applied to the dehumidification system for recovering waste heat from an air compressor using natural wind provided in the first aspect of the present application, wherein the solution dehumidification system further includes a concentrated solution pump disposed at the outlet side of the first liquid storage tank. The dehumidification method includes:

[0052] Control the air compression system and air conditioning system to operate simultaneously;

[0053] The first regulating valve and the second regulating valve are opened, and the flow rate of the concentrated solution entering the first solution dehumidifier is adjusted by the opening degree of the first regulating valve and the frequency change of the concentrated solution pump, and the flow rate of the concentrated solution entering the second solution dehumidifier is adjusted by the opening degree of the second regulating valve and the frequency change of the concentrated solution pump.

[0054] Furthermore, the dehumidification method further comprises:

[0055] Detecting the relative humidity φ1 of the air entering the air compression system, and obtaining a preset relative humidity φ2 and a preset relative humidity deviation value Δφ3 of the air entering the air compression system;

[0056] If φ1>φ2+Δφ3 is continuously satisfied within a preset time, the opening of the first regulating valve is increased once and / or the opening of the second regulating valve is decreased once;

[0057] If φ1<φ2-Δφ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump is reduced once;

[0058] If φ2+Δφ3≥φ1≥φ2-Δφ3 is continuously satisfied within a preset time, the opening of the first regulating valve, the opening of the second regulating valve and the frequency of the concentrated solution pump are kept unchanged.

[0059] Furthermore, the dehumidification method further comprises:

[0060] If φ1>φ2+Δφ3 is continuously satisfied within a preset time, the opening of the first regulating valve is 100% and the opening of the second regulating valve is 0%, the frequency of the concentrated solution pump is increased once;

[0061] If φ1<φ2-Δφ3 is continuously satisfied within a preset time and the concentrated solution pump is at the lower frequency limit, the opening of the first regulating valve is reduced once and / or the opening of the second regulating valve is increased once.

[0062] Furthermore, the air conditioning system further comprises a surface cooler, a chilled water supply pipe, a chilled water return pipe and a chilled water pump, and the dehumidification method further comprises:

[0063] Detecting the air supply temperature T6 and relative humidity φ7 at the air supply outlet of the air conditioning system, obtaining the air supply target temperature T7, the preset air supply temperature deviation ΔT8, the preset relative humidity φ8, and the preset relative humidity deviation value Δφ9 at the air supply outlet of the air conditioning system;

[0064] If T6>T7+ΔT8 or φ7>φ8+Δφ9 is continuously satisfied within the preset time, the frequency of the chilled water pump is increased once;

[0065] If T6<T7-ΔT8 and φ7<φ8-Δφ9 are continuously satisfied within the preset time, the frequency of the chilled water pump is reduced once;

[0066] If T7+ΔT8≥T6≥T7-ΔT8 and φ8+Δφ9≥φ7≥φ8-Δφ9 are continuously satisfied within the preset time, the frequency of the chilled water pump remains unchanged and the supply temperature of the chilled water remains unchanged.

[0067] Furthermore, the dehumidification method further comprises:

[0068] If the condition T6>T7+ΔT8 is continuously satisfied within a preset time after the frequency of the chilled water pump reaches the upper limit of operation, the supply temperature of the chilled water is reduced;

[0069] If T6<T7-ΔT8 is continuously satisfied within a preset time after the frequency of the chilled water pump reaches the lower operating limit, the supply temperature of the chilled water is increased.

[0070] The above technical solution provided by this application has the following advantages compared with the existing technology:

[0071] An embodiment of the present application proposes a composite dehumidification system that utilizes natural wind to recover waste heat from an air compressor. The system utilizes natural wind to recover waste heat generated during the cooling process of compressed air and lubricating oil to drive the regeneration of a dehumidification solution. The regenerated concentrated solution is used for dehumidification of the compressed air intake and the air-conditioning system, thereby reducing dehumidification energy consumption. The air-conditioning system uses solution dehumidification to separately handle the latent heat load, control indoor humidity, and avoid energy waste. In addition, the solution dehumidification method can also purify the indoor air. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0073] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0074] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0075] Figure 1 A schematic diagram of a dehumidification system for recovering waste heat from an air compressor using natural wind according to an embodiment of the present invention is shown;

[0076] Description of reference numerals:

[0077] 101. Air compressor; 102. Oil-gas separator; 103. First fan; 104. First heat exchanger; 105. Dehumidifier; 106. Gas storage tank; 107. Second fan; 108. Second heat exchanger; 109. Connecting air duct; 110. Oil outlet pipeline; 111. Oil return pipeline;

[0078] 201, regenerator; 202, first liquid storage tank; 203, concentrated solution pump; 204, first regulating valve; 205, first solution dehumidifier; 206, second regulating valve; 207, second solution dehumidifier; 208, dilute solution pump; 209, second liquid storage tank; 210, air supply pipe; 211, first concentrated solution pipe; 212, second concentrated solution pipe;

[0079] 300, air duct; 301, air inlet section; 302, filter; 303, surface cooler; 304, chilled water supply pipe; 305, chilled water return pipe; 306, chilled water pump; 307, third fan; 308, air supply port; 309, exhaust pipe; 310, exhaust valve;

[0080] 401, first temperature sensor; 402, second temperature sensor; 403, third temperature sensor; 404, first temperature and humidity sensor; 405, second temperature and humidity sensor; 406, third temperature and humidity sensor. DETAILED DESCRIPTION

[0081] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0082] The disclosure below provides many different embodiments or examples for implementing different configurations of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0083] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of an element or feature relative to another element or feature as shown in the figures, such as "inside", "outside", "inside", "outside", "below", "beneath", "above", "above", "front", "back", etc. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a position flip or a change in posture or a change in motion state, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device can be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptions used herein will be interpreted accordingly.

[0084] Example 1

[0085] like Figure 1 As shown, the dehumidification system for recovering waste heat from an air compressor using natural wind according to an embodiment of the present invention includes an air compression system, a solution dehumidification system, and an air conditioning system. The air compression system includes a first heat exchanger 104 for cooling lubricating oil, a second heat exchanger 108 for cooling compressed gas, a first fan 103 for driving natural wind through the first heat exchanger 104, and a second fan 107 for driving natural wind through the second heat exchanger 108; the solution dehumidification system includes a regenerator 201, a first solution dehumidifier 205, a second solution dehumidifier 207, and an air supply pipe 210. The air supply pipe 210 is used to guide the air flow after passing through the first heat exchanger 104 and the second heat exchanger 108 to the air inlet end of the regenerator 201. The first solution dehumidifier The liquid inlet of the dehumidifier 205 and the liquid inlet of the second solution dehumidifier 207 are both connected to the concentrated solution outlet of the regenerator 201, the liquid outlet of the first solution dehumidifier 205 and the liquid outlet of the second solution dehumidifier 207 are both connected to the dilute solution inlet of the regenerator 201, and the air outlet of the first solution dehumidifier 205 is connected to the air intake of the air compression system; the air conditioning system includes an exhaust pipe 309, and the exhaust pipe 309 connects the exhaust of the air conditioning system with the air inlet of the first solution dehumidifier 205, and the second solution dehumidifier 207 is used to dehumidify the air flow passing through the air conditioning system.

[0086] In the above embodiment, firstly, the first fan 103 can be used to introduce natural wind through the first heat exchanger 104 to cool the high-temperature lubricating oil, and the second fan 107 can be used to introduce natural wind to cool the high-temperature compressed gas. The heated natural wind is then used to regenerate the dilute solution in the solution dehumidification system, thereby recovering the waste heat of the air compression system and preventing the waste heat from being directly discharged into the environment and causing thermal pollution. Secondly, when the air compression system draws in high-temperature and high-humidity air for compression, the exhaust volume and exhaust pressure decrease, and energy consumption increases. In the dehumidification system of the above embodiment, the first solution dehumidifier 205 can be used to reduce the humidity of the air entering the air compression system, and the exhaust air from the air conditioning system can be introduced through the exhaust pipe 309. The exhaust air from the air conditioning system can be used to lower the temperature of the air entering the air compression system, thereby reducing the energy consumption of the air compression system. Thirdly, using solution dehumidification to dehumidify does not require the cooling source temperature of the air conditioning system to be lower than the dew point temperature of the air. The system no longer generates condensed water, which can prevent the growth of biological pollutants such as mold and improve indoor air quality. In addition, solution dehumidification is similar to a wet dust collector, which can filter dust in the air to a certain extent and purify the air. That is, the dehumidification system in the above embodiment uses natural wind to recover the waste heat generated by the cooling process of compressed air and lubricating oil to drive the regeneration of dehumidification solution. The regenerated concentrated solution is used for dehumidification of the compressed air inlet and the air-conditioning system, thereby reducing the dehumidification energy consumption; the air-conditioning system uses solution dehumidification to separately handle the latent heat load, control the indoor humidity, avoid energy waste, and the solution dehumidification method can also achieve the effect of purifying the indoor air.

[0087] Optionally, the air compression system may specifically include an air compressor 101, an oil-gas separator 102, a first fan 103, a first heat exchanger 104, a second fan 107, a second heat exchanger 108, a dehumidifier 105, and an air storage tank 106. The air inlet of the air compressor 101 is connected to the air outlet of the first solution dehumidifier 205 via a connecting air duct 109, the compressed air outlet of the air compressor 101 is connected to the inlet of the oil-gas separator 102, the oil outlet of the oil-gas separator 102 is connected to the inlet of the first heat exchanger 104 via an oil outlet pipeline 110, the outlet of the first heat exchanger 104 is connected to the oil return port of the air compressor 101 via an oil return pipeline 111, the air outlet of the oil-gas separator 102 is connected to the air inlet of the dehumidifier 105, and the outlet of the dehumidifier 105 is connected to the air storage tank 106. During operation, air enters the first liquid dehumidifier 205 for dehumidification, significantly reducing the energy consumption of the air compressor 101. The dehumidified air is then passed through the connecting air duct 109 into the air compressor 101 for compression. The compressed oil-gas mixture then enters the oil-gas separator 102 for oil-gas separation. The separated, high-temperature compressed gas is cooled by natural air through the second heat exchanger 108. The cooled compressed gas undergoes a secondary dehumidification process in the dehumidifier 105 and is then passed into the gas storage tank 106 for subsequent system processing. The separated, high-temperature lubricating oil enters the first heat exchanger 104 through the oil outlet line 110 for cooling by natural air. The cooled lubricating oil then returns to the air compressor 101 through the oil return line 111, completing the lubricating oil cycle.

[0088] Optionally, the air-conditioning system may include an air duct 300, in which an air intake section 301, a filter 302, a surface cooler 303, a third fan 307 and an air outlet 308 are arranged in sequence along the air flow direction. The second solution dehumidifier 207 of the solution dehumidification system is arranged in the air duct 300 and is located in front of the surface cooler 303. The surface cooler 303 is correspondingly provided with a chilled water supply pipe 304, a chilled water return pipe 305, and a chilled water pump 306; the chilled water pump 306 drives the chilled water into the surface cooler 303 through the chilled water supply pipe 304, and returns the chilled water that completes heat exchange in the surface cooler 303 through the chilled water return pipe 305. The system can use a high-temperature cold source to control the indoor temperature, and the chilled water supply temperature can be increased from 7°C of a conventional air-conditioning system to 18°C, thereby improving the energy efficiency of the refrigeration host and reducing the energy consumption of the air-conditioning system. During operation, third fan 307 drives air from the air intake section into air duct 300. The air then passes through filter 302, second liquid dehumidifier 207, and surface cooler 303 before being delivered through air outlet 308. The air entering air intake section 301 can be fresh air, return air, or mixed air. The air conditioning system utilizes second liquid dehumidifier 207 to independently handle latent heat loads and control indoor humidity. A higher-temperature cooling source controls indoor temperature, achieving independent control of temperature and humidity and avoiding energy waste. Furthermore, liquid dehumidification also purifies indoor air.

[0089] In some embodiments, the dehumidification system for recovering air compressor waste heat using natural wind further includes a first liquid storage tank 202. The concentrated solution outlet of the regenerator 201 is connected to the first liquid storage tank 202. The first liquid storage tank 202 is in communication with the first solution dehumidifier 205 via a first concentrated solution pipe 211, and the first liquid storage tank 202 is in communication with the second solution dehumidifier 207 via a second concentrated solution pipe 212. Similarly, the dilute solution inlet of the regenerator 201 is connected to a second liquid storage tank 209. The second liquid storage tank 209 is in communication with the first solution dehumidifier 205 via a first dilute solution pipe, and the second liquid storage tank 209 is in communication with the second solution dehumidifier 207 via a second dilute solution pipe.

[0090] The working principle of the solution dehumidification system is as follows: the dilute solution is transported from the second liquid storage tank 209 to the regenerator 201 through the dilute solution pump 208. At this time, the high-temperature natural wind collected from the first heat exchanger 104 and the second heat exchanger 108 enters the regenerator 201 of the solution dehumidification system through the air supply pipe 210. The high-temperature natural wind and the dilute solution are heat exchanged in the regenerator 201, and the dilute solution is regenerated into a concentrated solution. The high-temperature natural wind is discharged into the atmosphere after the temperature is reduced. The prepared concentrated solution enters the first liquid storage tank 202 and is transported to the first solution dehumidifier 205 through the first concentrated solution pipe 211 through the concentrated solution pump 203, and is transported to the second solution dehumidifier 207 through the second concentrated solution pipe 212 through the concentrated solution pump 203 to dehumidify the areas that need dehumidification. The dilute solution produced by the first solution dehumidifier 205 and the second solution dehumidifier 207 will flow back to the second liquid storage tank 209.

[0091] In the embodiment of the present application, the solution dehumidification system is mainly responsible for dehumidifying two areas: one is dehumidifying the air inlet end of the air compression system through the first solution dehumidifier 205, and the other is dehumidifying the air inlet side of the air conditioning system through the second solution dehumidifier 207. The first liquid storage tank 202 provided in the solution dehumidification system is used to store concentrated solution, and the second liquid storage tank 209 is used to store dilute solution. When the air conditioning system and the air compressor 101 system are not running at the same time, the concentrated solution stored in the first liquid storage tank 202 can still be used to dehumidify the air conditioning system, achieving flexible energy storage, that is, the waste heat of the air compressor 101 is stored in the first liquid storage tank 202 in the form of concentrated solution. When the air compressor 101 is not running, but the air conditioning system needs dehumidification, the dehumidification task can still be completed normally.

[0092] In some embodiments, the first concentrated solution pipe 211 is provided with a first regulating valve 204, and the second concentrated solution pipe 212 is provided with a second regulating valve 206. The first regulating valve 204 controls the opening and closing of the first concentrated solution pipe 211 and the flow rate of the fluid therein, while the second regulating valve 206 regulates the opening and closing of the second concentrated solution pipe 212 and the flow rate of the fluid therein. Specifically, the first regulating valve 204 and the second regulating valve 206 can be used to distribute the concentrated solution entering the first solution dehumidifier 205 and the second solution dehumidifier 207, thereby meeting different operating requirements. Both the first regulating valve 204 and the second regulating valve 206 are valves with adjustable opening, preferably electronic regulating valves.

[0093] In some embodiments, the dehumidification system that uses natural wind to recover waste heat from the air compressor also includes a monitoring module, which includes at least one of a first temperature sensor 401, a second temperature sensor 402, a third temperature sensor 403, a first temperature and humidity sensor 404, a second temperature and humidity sensor 405, and a third temperature and humidity sensor 406, wherein: the first temperature sensor 401 is arranged on the exhaust pipe 309, for obtaining the exhaust temperature of the air-conditioning system; the second temperature sensor 402 is arranged at the air inlet end of the first solution dehumidifier 205, for obtaining the air temperature in the atmospheric environment; the third temperature sensor 403 is arranged on the return oil pipeline 111 connected to the oil outlet end of the first heat exchanger 104, for detecting the return oil temperature of the lubricating oil; the first temperature and humidity sensor 404 is arranged between the first solution dehumidifier 205 and the air compression system; the second temperature and humidity sensor 405 is arranged between the air outlet side of the second solution dehumidifier 207 and the heat exchanger of the air-conditioning system; the third temperature and humidity sensor 406 is arranged at the air outlet 308 of the air-conditioning system. The monitoring module is set up to monitor various parameters of the dehumidification system that uses natural wind to recover waste heat from the air compressor in order to achieve automatic control.

[0094] Example 2

[0095] Based on the dehumidification system for recovering waste heat from an air compressor using natural wind in the aforementioned embodiment 1, this embodiment provides a dehumidification method for recovering waste heat from an air compressor using natural wind. Specifically, the dehumidification method mainly includes the following steps:

[0096] The exhaust temperature of the air conditioning system is detected as T1 and the air temperature in the atmospheric environment is set as T2;

[0097] If T1≤T2, the exhaust pipe 309 is opened, and the exhaust air of the air conditioning system is introduced into the first solution dehumidifier 205 through the exhaust pipe 309;

[0098] If T1>T2, the exhaust pipe 309 is closed, and air in the atmospheric environment is introduced into the first solution dehumidifier 205.

[0099] A first temperature sensor 401 is provided on the exhaust pipe 309 of the air-conditioning system, and the temperature detected by the first temperature sensor 401 is the temperature of the exhaust air of the air-conditioning system. A second temperature sensor 402 is provided at the air inlet end of the first solution dehumidifier 205, and the temperature detected by the second temperature sensor 402 is the temperature of the air in the atmospheric environment, which is set as T2. There are two sources of air entering the first solution dehumidifier 205, namely, the exhaust air of the air-conditioning system introduced through the exhaust pipe 309, and the air directly introduced into the atmospheric environment. The dehumidification method in this embodiment is to determine whether to introduce the exhaust air of the air-conditioning system into the first solution dehumidifier 205. When T1≤T2, the exhaust air of the air-conditioning system can be used to lower the temperature of the air entering the air compression system, thereby reducing the energy consumption of the air compressor 101.

[0100] Preferably, if T1≤T2 is continuously satisfied within the preset time, the exhaust pipe 309 is opened, and the exhaust air of the air-conditioning system is introduced into the first solution dehumidifier 205 through the exhaust pipe 309; the preset time can be set as needed, for example, it can be 600s, and an exhaust valve 310 can be set in the exhaust pipe 309 to drive the exhaust air into the first solution dehumidifier 205 and control the air volume.

[0101] Preferably, if T1>T2 is continuously satisfied within a preset time, the exhaust pipe 309 is closed, and air in the atmospheric environment is introduced into the first solution dehumidifier 205, wherein the preset time can be set as needed, for example, 600s.

[0102] Example 3

[0103] Based on the dehumidification system for recovering waste heat from an air compressor using natural wind in the aforementioned embodiment 1, this embodiment provides a dehumidification method for recovering waste heat from an air compressor using natural wind. Specifically, the dehumidification method mainly includes the following steps:

[0104] Detecting the return oil temperature T3 of the lubricating oil in the return oil pipeline 111 connected to the oil outlet of the first heat exchanger 104, and obtaining a preset return oil temperature T4 and a preset return oil temperature deviation value ΔT5;

[0105] If T3>T4+ΔT5 is continuously satisfied within the preset time, the frequency of the first fan 103 is increased once;

[0106] If T3<T4-ΔT5 is continuously satisfied within the preset time, the frequency of the first fan 103 is reduced once;

[0107] If T4+ΔT5≥T3≥T4-ΔT5 is continuously satisfied within the preset time, the frequency of the first fan 103 remains unchanged.

[0108] A third temperature sensor 403 is provided on the lubricating oil return line 111. The temperature detected by the third temperature sensor 403 is the lubricating oil return temperature T3. The target set temperature of the lubricating oil is the preset return oil temperature T4. The set temperature deviation value is the preset return oil temperature deviation value ΔT5, wherein T4 and ΔT5 are set as needed. By controlling the dehumidification method in this embodiment, it can be ensured that the lubricating oil temperature will not be too high to affect the operating efficiency of the compressor, and it can also be ensured that the lubricating oil temperature will not be too low to affect the return oil, and energy can be fully saved.

[0109] Preferably, if T3>T4+ΔT5 is continuously satisfied within the preset time, the frequency of the first fan 103 is increased once; the preset time can be set as needed, for example, it can be 60s, and the value by which the frequency of the first fan 103 is increased each time is determined according to needs, for example, it can be 1 Hz, until the frequency operating upper limit.

[0110] Preferably, if T3<T4-ΔT5 is continuously satisfied within the preset time, the frequency of the first fan 103 is reduced once; the preset time can be set as needed, for example, it can be 60s, and the value by which the frequency of the first fan 103 is reduced each time is determined according to needs, for example, it can be 1 Hz, until the lower limit of the frequency operation is reached.

[0111] Example 4

[0112] Based on the dehumidification system for recovering waste heat from an air compressor using natural wind in the aforementioned embodiment 1, this embodiment provides a dehumidification method for recovering waste heat from an air compressor using natural wind, wherein the concentrated solution outlet of the regenerator 201 of the dehumidification system is connected to a first liquid storage tank 202, the first liquid storage tank 202 is connected to the first solution dehumidifier 205 via a first concentrated solution pipe 211, and the first liquid storage tank 202 is connected to the second solution dehumidifier 207 via a second concentrated solution pipe 212. The solution dehumidification system further includes a concentrated solution pump 203 provided on the outlet side of the first liquid storage tank 202. Specifically, the dehumidification method mainly includes the following steps:

[0113] Control the air compression system to operate and the air conditioning system to stop, the first concentrated solution pipe 211 to be connected and the second concentrated solution pipe 212 to be blocked;

[0114] Detecting the relative humidity φ1 of the air entering the air compression system, and obtaining a preset relative humidity φ2 and a preset relative humidity deviation value Δφ3 of the air entering the air compression system;

[0115] If φ1>φ2+Δφ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump 203 is increased once;

[0116] If φ1<φ2-Δφ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump 203 is reduced once;

[0117] If the condition φ2+Δφ3≥φ1≥φ2-Δφ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump 203 remains unchanged.

[0118] After the first solution dehumidifier 205, a first temperature and humidity sensor 404 is installed on the connecting air duct 109 before it enters the air compressor 101. Based on the detected temperature and humidity values of the air in the connecting air duct 109, the first temperature and humidity sensor 404 calculates the relative humidity and sets this relative humidity as the relative humidity φ1 of the air entering the air compression system, where φ2 and Δφ3 are set as needed. This dehumidification method operates when the air compression system is operating while the air conditioning system is not. First regulating valve 204 is fully opened, second regulating valve 206 is closed, and the concentrated solution flow rate is adjusted by varying the frequency of concentrated solution pump 203. This maximizes energy savings while meeting demand.

[0119] Preferably, if φ1>φ2+Δφ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump 203 is increased once; the preset time can be set as needed, for example, it can be 60s, and the value by which the frequency of the concentrated solution pump 203 is increased each time is determined according to needs, for example, it can be 1 Hz, until the frequency operating upper limit.

[0120] Preferably, if T3<T4-ΔT5 is continuously satisfied within the preset time, the frequency of the first fan 103 is reduced once; the preset time can be set as needed, for example, it can be 60s, and the value by which the frequency of the concentrated solution pump 203 is reduced each time is determined according to needs, for example, it can be 1 Hz, until the frequency operating lower limit is reached.

[0121] Example 5

[0122] Based on the dehumidification system for recovering air compressor waste heat using natural wind in the aforementioned embodiment 1, this embodiment provides a dehumidification method for recovering air compressor waste heat using natural wind, wherein the concentrated solution outlet of the regenerator 201 of the dehumidification system is connected to a first liquid storage tank 202, the first liquid storage tank 202 is connected to the first solution dehumidifier 205 via a first concentrated solution pipe 211, and the first liquid storage tank 202 is connected to the second solution dehumidifier 207 via a second concentrated solution pipe 212. The air conditioning system further includes a surface cooler 303, a chilled water supply pipe 304, a chilled water return pipe 305, and a chilled water pump 306. The dehumidification method includes:

[0123] Control the air compression system to stop and the air conditioning system to operate, the first concentrated solution pipe 211 to be cut off and the second concentrated solution pipe 212 to be connected;

[0124] The flow rate of the concentrated solution is adjusted by changing the frequency of the concentrated solution pump 203 , and the flow rate of the chilled water is adjusted by changing the frequency of the chilled water pump 306 .

[0125] The dehumidification method of this embodiment is a working method when the air compression system is not running and the air conditioning system is running, wherein the first regulating valve 204 is closed and the second regulating valve 206 is opened to the maximum. The concentrated solution flow rate can be adjusted by changing the frequency of the concentrated solution pump 203, and the chilled water flow rate can be adjusted by changing the frequency of the chilled water pump 306. Under the premise of meeting the demand, energy saving can be achieved as much as possible.

[0126] In some embodiments, the dehumidification method further comprises:

[0127] Detecting the relative humidity φ4 of the air entering the surface cooler 303 , and obtaining a preset relative humidity φ5 and a preset relative humidity deviation value Δφ6 of the air entering the surface cooler 303 ;

[0128] If φ4>φ5+Δφ6 is continuously satisfied within the preset time, the frequency of the concentrated solution pump 203 is increased once;

[0129] If φ4<φ5-Δφ6 is satisfied continuously within the preset time, the frequency of the concentrated solution pump 203 is reduced once;

[0130] If the condition φ5+Δφ6≥φ4≥φ5-Δφ6 is continuously satisfied within the preset time, the frequency of the concentrated solution pump 203 remains unchanged.

[0131] A second temperature and humidity sensor 405 is installed after the second liquid dehumidifier 207 in the air conditioning system and before the surface cooler 303. The relative humidity calculated from the detected temperature and humidity is set as the relative humidity φ4 of the air entering the surface cooler 303. The target relative humidity of the air before entering the surface cooler 303 is set to φ5, and the relative humidity deviation is set to Δφ6, where φ5 and Δφ6 are set as needed. The dehumidification method of this embodiment operates when the air compression system is not operating and the air conditioning system is operating. The first regulating valve 204 is closed, and the second regulating valve 206 is fully opened. The concentrated solution flow rate can be adjusted by varying the frequency of the concentrated solution pump 203, thereby achieving maximum energy savings while meeting demand.

[0132] Preferably, if φ4>φ5+Δφ6 is continuously satisfied within the preset time, the frequency of the concentrated solution pump 203 is increased once; the preset time can be set as needed, for example, it can be 60s, and the value by which the frequency of the concentrated solution pump 203 is increased each time is determined according to needs, for example, it can be 1 Hz, until the frequency operating upper limit.

[0133] Preferably, if φ4<φ5-Δφ6 is continuously satisfied within the preset time, the frequency of the concentrated solution pump 203 is reduced once; the preset time can be set as needed, for example, it can be 60s, and the value by which the frequency of the concentrated solution pump 203 is reduced each time is determined according to needs, for example, it can be 1 Hz, until the frequency operating lower limit is reached.

[0134] In some other embodiments, the dehumidification method further comprises:

[0135] Detecting the air supply temperature T6 and relative humidity φ7 at the air supply outlet 308 of the air conditioning system, obtaining the air supply target temperature T7, the preset air supply temperature deviation ΔT8, the preset relative humidity φ8, and the preset relative humidity deviation value Δφ9 at the air supply outlet 308 of the air conditioning system;

[0136] If T6>T7+ΔT8 or φ7>φ8+Δφ9 is continuously satisfied within the preset time, the frequency of the chilled water pump 306 is increased once;

[0137] If T6<T7-ΔT8 and φ7<φ8-Δφ9 are continuously satisfied within the preset time, the frequency of the chilled water pump 306 is reduced once;

[0138] If T7+ΔT8≥T6≥T7-ΔT8 and φ8+Δφ9≥φ7≥φ8-Δφ9 are continuously satisfied within the preset time, the frequency of the chilled water pump 306 remains unchanged.

[0139] A third temperature and humidity sensor 406 is installed at the air outlet 308 of the air conditioning system. The detected temperature is set as the supply air temperature T6 at the air outlet 308 of the air conditioning system. The relative humidity is calculated based on the temperature and humidity values detected by the third temperature and humidity sensor 406, and this relative humidity is set as the supply air relative humidity φ7 at the air outlet 308 of the air conditioning system. T7, ΔT8, φ8, and Δφ9 can be set as needed. The dehumidification method of this embodiment operates when the air compression system is not operating and the air conditioning system is operating. The first regulating valve 204 is closed, the second regulating valve 206 is fully opened, and the chilled water flow rate is adjusted by varying the frequency of the chilled water pump 306. This achieves maximum energy savings while meeting demand.

[0140] Preferably, if T6>T7+ΔT8 or φ7>φ8+Δφ9 is continuously satisfied within a preset time, the frequency of the chilled water pump 306 is increased once, wherein the preset time can be set as needed, for example, 60 seconds, and the value by which the frequency of the chilled water pump 306 is increased each time is determined as needed, for example, 1 Hz, until the frequency operating upper limit. More preferably, if T6>T7+ΔT8 is still continuously satisfied within the preset time after the frequency of the chilled water pump 306 reaches the operating upper limit, the supply temperature of the chilled water is reduced, and the amount of reduction in the supply temperature can be set as needed, for example, 0.5°C.

[0141] Preferably, if T6 < T7 - ΔT8 and φ7 < φ8 - Δφ9 are continuously satisfied within a preset time, the frequency of the chilled water pump 306 is reduced once; the preset time can be set as needed, for example, 60 seconds, and the value by which the frequency of the chilled water pump 306 is reduced each time is determined as needed, for example, 1 Hz, until the frequency operating lower limit. Further preferably, if T6 < T7 - ΔT8 is continuously satisfied within a preset time after the frequency of the chilled water pump 306 reaches the operating lower limit, the supply temperature of the chilled water is increased, and the increased supply temperature can be set as needed, for example, 0.5°C.

[0142] Example 6

[0143] Based on the dehumidification system for recovering air compressor waste heat using natural wind in the aforementioned embodiment 1, this embodiment provides a dehumidification method for recovering air compressor waste heat using natural wind, wherein the concentrated solution outlet of the regenerator 201 of the dehumidification system is connected to a first liquid storage tank 202, the first liquid storage tank 202 is connected to the first solution dehumidifier 205 via a first concentrated solution pipe 211, and the first liquid storage tank 202 is connected to the second solution dehumidifier 207 via a second concentrated solution pipe 212. The air conditioning system further includes a surface cooler 303, a chilled water supply pipe 304, a chilled water return pipe 305, and a chilled water pump 306. The solution dehumidification system further includes a concentrated solution pump 203 provided on the outlet side of the first liquid storage tank 202. The dehumidification method includes:

[0144] Control the air compression system and air conditioning system to operate simultaneously;

[0145] The first regulating valve 204 and the second regulating valve 206 are opened, and the flow rate of the concentrated solution entering the first solution dehumidifier 205 is adjusted by the opening degree of the first regulating valve 204 and the frequency change of the concentrated solution pump 203, and the flow rate of the concentrated solution entering the second solution dehumidifier 207 is adjusted by the opening degree of the second regulating valve 206 and the frequency change of the concentrated solution pump 203.

[0146] The dehumidification method of this embodiment operates when the air compression system and the air conditioning system are operating simultaneously. Prioritizing dehumidification is performed on the air intake of the air compressor 101 to ensure normal operation of the air compressor 101. The first regulating valve 204 and the second regulating valve 206 are both open. The concentrated solution flow rate can be adjusted by varying the openings of the first regulating valve 204 and the second regulating valve 206 and the frequency of the concentrated solution pump 203, thereby achieving maximum energy savings while meeting demand.

[0147] In an optional embodiment, the dehumidification method for recovering waste heat from an air compressor using natural wind includes:

[0148] Detecting the relative humidity φ1 of the air entering the air compression system, and obtaining a preset relative humidity φ2 and a preset relative humidity deviation value Δφ3 of the air entering the air compression system;

[0149] If φ1>φ2+Δφ3 is continuously satisfied within a preset time, the opening of the first regulating valve 204 is increased once and / or the opening of the second regulating valve 206 is decreased once;

[0150] If φ1<φ2-Δφ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump 203 is reduced once;

[0151] If φ2+Δφ3≥φ1≥φ2-Δφ3 is continuously satisfied within the preset time, the opening of the first regulating valve 204, the opening of the second regulating valve 206 and the frequency of the concentrated solution pump 203 are kept unchanged.

[0152] After the first solution dehumidifier 205, a first temperature and humidity sensor 404 is provided on the connecting air duct 109 before entering the air compressor 101. The relative humidity of the air in the connecting air duct 109 is calculated based on the temperature and humidity values detected by the sensor, and this relative humidity is set as the relative humidity φ1 of the air entering the air compression system, where φ2 and Δφ3 are set as needed. The dehumidification method of this embodiment is a working method of the air compression system when the air compression system and the air conditioning system are running at the same time. At this time, the air inlet end of the air compressor 101 is preferentially dehumidified to ensure that the air compressor 101 can operate normally. The first regulating valve 204 and the second regulating valve 206 are both open. The concentrated solution flow rate can be adjusted by changing the opening of the first regulating valve 204 and the second regulating valve 206 and the frequency of the concentrated solution pump 203. Under the premise of meeting the needs, energy saving can be achieved as much as possible.

[0153] Preferably, if φ1>φ2+Δφ3 is continuously satisfied within a preset time, the opening of the first regulating valve 204 is increased once and / or the opening of the second regulating valve 206 is decreased once; the preset time can be set as needed, for example, 60 seconds, and the amplitude of each increase in the opening of the first regulating valve 204 and the amplitude of each decrease in the opening of the second regulating valve 206 are determined as needed, for example, 5%, until the opening of the first regulating valve 204 is 100% and the opening of the second regulating valve 206 is 0%. More preferably, if φ1>φ2+Δφ3 is continuously satisfied within the preset time, the opening of the first regulating valve 204 is 100% and the opening of the second regulating valve 206 is 0%, the frequency of the concentrated solution pump 203 is increased once, and the value of each increase in the frequency of the concentrated solution pump 203 is determined as needed, for example, 1 Hz, until the frequency operating upper limit is reached.

[0154] Preferably, if φ1 < φ2 - Δφ3 is continuously satisfied within a preset time, the frequency of the concentrated solution pump 203 is reduced once; the preset time can be set as needed, for example, 60 seconds, and the value by which the frequency of the concentrated solution pump 203 is reduced each time is determined as needed, for example, 1 Hz, until the frequency operating lower limit is reached. More preferably, if φ1 < φ2 - Δφ3 is continuously satisfied within the preset time and the concentrated solution pump 203 is at the frequency lower limit, the opening of the first regulating valve 204 is reduced once and / or the opening of the second regulating valve 206 is increased once. The magnitude of each reduction in the opening of the first regulating valve 204 and the magnitude of each increase in the opening of the second regulating valve 206 are determined as needed, for example, 5%.

[0155] Based on the above embodiment, the dehumidification method further includes coordinated control of the air conditioning system. Specifically, regardless of whether φ1>φ2+Δφ3, φ1<φ2-Δφ3, or φ2+Δφ3≥φ1≥φ2-Δφ3, the dehumidification method further includes:

[0156] Detecting the air supply temperature T6 and relative humidity φ7 at the air supply outlet 308 of the air conditioning system, obtaining the air supply target temperature T7, the preset air supply temperature deviation ΔT8, the preset relative humidity φ8, and the preset relative humidity deviation value Δφ9 at the air supply outlet 308 of the air conditioning system;

[0157] If T6>T7+ΔT8 or φ7>φ8+Δφ9 is continuously satisfied within the preset time, the frequency of the chilled water pump 306 is increased once;

[0158] If T6<T7-ΔT8 and φ7<φ8-Δφ9 are continuously satisfied within the preset time, the frequency of the chilled water pump 306 is reduced once;

[0159] If T7+ΔT8≥T6≥T7-ΔT8 and φ8+Δφ9≥φ7≥φ8-Δφ9 are continuously satisfied within the preset time, the frequency of the chilled water pump 306 remains unchanged and the supply temperature of the chilled water remains unchanged.

[0160] A third temperature and humidity sensor 406 is installed at the air outlet 308 of the air conditioning system. The detected temperature is set as the supply air temperature T6 at the air outlet 308 of the air conditioning system. The relative humidity is calculated based on the temperature and humidity values detected by the third temperature and humidity sensor 406, and this relative humidity is set as the supply air relative humidity φ7 at the air outlet 308 of the air conditioning system. T7, ΔT8, φ8, and Δφ9 can be set as needed. The dehumidification method of this embodiment is an operating method of the air conditioning system when the air compression system and the air conditioning system are operating simultaneously. The first regulating valve 204 and the second regulating valve 206 are both open. The flow rate of the chilled water pump 306 can be adjusted by changing the frequency of the chilled water pump 306. This can achieve maximum energy savings while meeting demand.

[0161] Preferably, if T6>T7+ΔT8 or φ7>φ8+Δφ9 is continuously satisfied within a preset time, the frequency of the chilled water pump 306 is increased once, wherein the preset time can be set as needed, for example, 60 seconds, and the value by which the frequency of the chilled water pump 306 is increased each time is determined as needed, for example, 1 Hz, until the frequency operating upper limit. More preferably, if T6>T7+ΔT8 is still continuously satisfied within the preset time after the frequency of the chilled water pump 306 reaches the operating upper limit, the supply temperature of the chilled water is reduced, and the amount of reduction in the supply temperature can be set as needed, for example, 0.5°C.

[0162] Preferably, if T6 < T7 - ΔT8 and φ7 < φ8 - Δφ9 are continuously satisfied within a preset time, the frequency of the chilled water pump 306 is reduced once; the preset time can be set as needed, for example, 60 seconds, and the value by which the frequency of the chilled water pump 306 is reduced each time is determined as needed, for example, 1 Hz, until the frequency operating lower limit. Further preferably, if T6 < T7 - ΔT8 is continuously satisfied within a preset time after the frequency of the chilled water pump 306 reaches the operating lower limit, the supply temperature of the chilled water is increased, and the increased supply temperature can be set as needed, for example, 0.5°C.

[0163] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0164] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0165] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A dehumidification method for recovering waste heat from an air compressor using natural wind, which is applied to a dehumidification system for recovering waste heat from an air compressor using natural wind, characterized in that: The dehumidification system that uses natural wind to recover waste heat from the air compressor includes: An air compression system comprising a first heat exchanger for cooling lubricating oil, a second heat exchanger for cooling compressed gas, a first fan for driving natural wind through the first heat exchanger, and a second fan for driving natural wind through the second heat exchanger; The solution dehumidification system includes a regenerator, a first solution dehumidifier, a second solution dehumidifier, a concentrated solution pump and an air supply pipe, wherein the air supply pipe is used to guide the air flow after passing through the first heat exchanger and the second heat exchanger to the air inlet end of the regenerator, the liquid inlet of the first solution dehumidifier and the liquid inlet of the second solution dehumidifier are both connected to the concentrated solution outlet of the regenerator, the liquid outlet of the first solution dehumidifier and the liquid outlet of the second solution dehumidifier are both connected to the dilute solution inlet of the regenerator, the air outlet of the first solution dehumidifier is connected to the air intake of the air compression system, the concentrated solution outlet of the regenerator is connected to a first liquid storage tank, the first liquid storage tank is connected to the first solution dehumidifier through a first concentrated solution pipe, the first liquid storage tank is connected to the second solution dehumidifier through a second concentrated solution pipe, the first concentrated solution pipe is provided with a first regulating valve, the second concentrated solution pipe is provided with a second regulating valve, and the concentrated solution pump is provided on the outlet side of the first liquid storage tank; an air conditioning system, comprising an exhaust duct, the exhaust duct communicating exhaust air from the air conditioning system with an air inlet of the first solution dehumidifier, the second solution dehumidifier being configured to dehumidify airflow passing through the air conditioning system; The dehumidification method comprises: Controlling the simultaneous operation of the air compression system and the air conditioning system; opening the first regulating valve and the second regulating valve; adjusting the flow rate of the concentrated solution entering the first solution dehumidifier by changing the opening degree of the first regulating valve and the frequency of the concentrated solution pump; and adjusting the flow rate of the concentrated solution entering the second solution dehumidifier by changing the opening degree of the second regulating valve and the frequency of the concentrated solution pump; Detecting the relative humidity φ1 of the air entering the air compression system, and obtaining a preset relative humidity φ2 and a preset relative humidity deviation value △φ3 of the air entering the air compression system; If φ1>φ2+△φ3 is continuously satisfied within the preset time, the opening of the first regulating valve is increased once and / or the opening of the second regulating valve is reduced once; if φ1<φ2-△φ3 is continuously satisfied within the preset time, the frequency of the concentrated solution pump is reduced once; if φ2+△φ3≥φ1≥φ2-△φ3 is continuously satisfied within the preset time, the opening of the first regulating valve, the opening of the second regulating valve and the frequency of the concentrated solution pump are kept unchanged.

2. The dehumidification method for recovering waste heat from an air compressor using natural wind according to claim 1, characterized in that: The dilute solution inlet of the regenerator is connected to a second liquid storage tank, the second liquid storage tank is connected to the first solution dehumidifier through a first dilute solution pipe, and the second liquid storage tank is connected to the second solution dehumidifier through a second dilute solution pipe.

3. The dehumidification method for recovering waste heat from an air compressor using natural wind according to claim 1 or 2, characterized in that: The dehumidification system for recovering waste heat from the air compressor using natural wind also includes a monitoring module, which includes: a first temperature sensor, disposed on the exhaust pipe, for obtaining the temperature of exhaust air from the air conditioning system; a second temperature sensor, disposed at the air inlet end of the first solution dehumidifier, for obtaining the air temperature in the atmospheric environment; The third temperature sensor is provided on the oil return pipeline connected to the oil outlet end of the first heat exchanger, and is used to detect the return oil temperature of the lubricating oil.

4. The dehumidification method for recovering waste heat from an air compressor using natural wind according to claim 3, characterized in that: The monitoring module also includes: a first temperature and humidity sensor, disposed between the first solution dehumidifier and the air compression system; a second temperature and humidity sensor, disposed between the air outlet side of the second liquid dehumidifier and the heat exchanger of the air conditioning system; The third temperature and humidity sensor is arranged at the air outlet of the air conditioning system.

5. The dehumidification method for recovering waste heat from an air compressor using natural wind according to claim 1, characterized in that: The dehumidification method further comprises: If φ1>φ2+Δφ3 is continuously satisfied within a preset time, the opening of the first regulating valve is 100% and the opening of the second regulating valve is 0%, the frequency of the concentrated solution pump is increased once; If φ1<φ2-Δφ3 is continuously satisfied within a preset time and the concentrated solution pump is at the lower frequency limit, the opening of the first regulating valve is reduced once and / or the opening of the second regulating valve is increased once.

6. The dehumidification method for recovering waste heat from an air compressor using natural wind according to claim 1 or 5, characterized in that: The air conditioning system further includes a surface cooler, a chilled water supply pipe, a chilled water return pipe and a chilled water pump, and the dehumidification method further includes: Detecting the air supply temperature T6 and relative humidity φ7 at the air supply outlet of the air conditioning system, obtaining the air supply target temperature T7, the preset air supply temperature deviation ΔT8, the preset relative humidity φ8, and the preset relative humidity deviation value Δφ9 at the air supply outlet of the air conditioning system; If T6>T7+△T8 or φ7>φ8+△φ9 is continuously satisfied within the preset time, the frequency of the chilled water pump is increased once; If T6<T7-△T8 and φ7<φ8-△φ9 are continuously satisfied within the preset time, the frequency of the chilled water pump is reduced once; If T7+△T8≥T6≥T7-△T8 and φ8+△φ9≥φ7≥φ8-△φ9 are continuously satisfied within the preset time, the frequency of the chilled water pump remains unchanged and the supply temperature of the chilled water remains unchanged.

7. The dehumidification method for recovering waste heat from an air compressor using natural wind according to claim 6, characterized in that: The dehumidification method further comprises: If the frequency of the chilled water pump reaches the upper limit of operation and T6>T7+△T8 is continuously satisfied within the preset time, the supply temperature of the chilled water is reduced; If the condition T6<T7-ΔT8 is continuously satisfied within a preset time after the frequency of the chilled water pump reaches the lower operating limit, the supply temperature of the chilled water is increased.

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