A data center container dehumidification and cooling system and method based on waste heat driving
By using a heat pump-driven dehumidifying rotor and indirect evaporative cooling technology, efficient humidity control is achieved by utilizing server waste heat. This solves the problems of high energy consumption and unstable humidity in data centers in high-temperature and high-humidity areas, and provides an energy-saving and stable humidity control solution.
Patent Information
- Application Number
- CN202610220081.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-24
- Publication Date
- 2026-06-05
AI Technical Summary
Existing data centers in high-temperature and high-humidity regions have high energy consumption in their evaporative cooling systems, and server waste heat is not efficiently utilized, resulting in energy waste and unstable humidity control.
A waste heat-driven dehumidification and cooling system is adopted, which uses a heat pump to increase the return air temperature of the server as a regenerative heat source. Combined with a dehumidification rotor and an indirect evaporative cooler, the dehumidification rotor adsorbs hot and humid outdoor air and exchanges sensible heat in the indirect evaporative cooler, thereby achieving efficient humidity control and energy recovery.
It significantly reduces dehumidification energy consumption, stabilizes humidity control, and improves energy efficiency. It is suitable for data centers in high-temperature and high-humidity environments, providing both economy and stability.
Smart Images
Figure CN122161051A_ABST
Abstract
Description
Technical Field
[0001] This invention discloses a waste heat-driven dehumidification and cooling system and method for data center containers, relating to the fields of data center humidity control and refrigeration technology. Background Technology
[0002] With the increasing prevalence of edge computing and modular data centers, evaporative cooling systems face significant challenges when prefabricated containerized data centers are deployed in high-temperature and high-humidity regions such as Southeast Asia and coastal areas. Outdoor air has a high enthalpy, and existing mechanical refrigeration dehumidification systems consume a significant portion of the overall energy. Current refrigeration dehumidification methods involve cooling the air below its dew point using a compressor, then reheating the air before resupplying it, resulting in a cooling-heat offsetting effect. Furthermore, the low-grade waste heat generated by servers is typically directly emitted, leading to low energy efficiency. Summary of the Invention
[0003] This invention addresses the problems of existing technologies by providing a waste heat-driven dehumidification and cooling system and method for data center containers. By efficiently utilizing server waste heat and optimizing the dehumidification and cooling process, it solves the energy waste problem in existing dehumidification technologies and provides key technical support for the construction of green data centers in tropical, coastal and other high-humidity areas.
[0004] The specific solution proposed in this invention is as follows: This invention provides a waste heat-driven dehumidification and cooling method for data center containers, comprising: Step 1: Install a dehumidification and cooling system in the data center container. The system includes a main control PLC, a heat pump condenser, a dehumidification impeller, and an indirect evaporative cooler. The dehumidification impeller includes a regeneration zone and an adsorption zone. The main control PLC is electrically connected to other components to control the dehumidification and cooling process. Step 2: The heat pump condenser raises the temperature of the medium-temperature return air exhausted from the servers in the data center container to 45-60℃, forming a regenerative heat source that is delivered to the regeneration zone of the dehumidifier rotor to recover the air in the regeneration zone. Step 3: The adsorption zone adsorbs humid and hot outdoor air to form dry air, and the heat effect of adsorption raises the temperature of the dry air. The humidity of the dry air at the outlet of the adsorption zone is monitored. When the humidity exceeds a set threshold, the rotation speed of the dehumidification rotor adsorption zone is adjusted. Step 4: The dehumidified dry air is introduced into the dry channel of the indirect evaporative cooler, while the circulating water and regeneration zone air are introduced into the wet channel of the indirect evaporative cooler for direct contact, achieving isenthalpic cooling of the regeneration zone air. The dry air in the dry channel and the airflow in the wet channel exchange sensible heat while isolating moisture exchange, thus cooling the dry air. The inlet and outlet temperatures of the dry air in the dry channel are monitored in real time, and the flow rate of the circulating water and the flow rate of the regeneration air are adjusted according to the temperature difference. Step 5: If the temperature of the dry air cooled by sensible heat exchange meets the air supply requirements, it will be directly sent into the data center container; if not, auxiliary cooling will be performed to bring the temperature of the dry air up to the required level before it is sent into the data center container.
[0005] Furthermore, in step 1 of the waste heat-driven data center container dehumidification and cooling method, the heat pump condenser is connected to the return air plenum of the data center container to receive the medium-temperature return air discharged from the servers collected by the return air plenum. The regeneration zone in the dehumidification rotor is connected to the output end of the heat pump condenser, and receives the regenerated heat source after its temperature has been increased. The indirect evaporative cooler includes a heat exchange core, which has mutually isolated dry and wet channels.
[0006] Furthermore, in step 1 of the aforementioned waste heat-driven data center container dehumidification and cooling method, the adsorption zone of the dehumidification rotor is made of silica gel or molecular sieve adsorption material, achieving a dehumidification efficiency of no less than 80% for outdoor humid and hot air. The dry and wet channels of the heat exchange core are made of corrosion-resistant materials, and the heat transfer coefficient between them is ≥50W / (m²・K).
[0007] Furthermore, in step 1 of the waste heat-driven data center container dehumidification and cooling method, the dehumidification and cooling system further includes a temperature sensor and a humidity sensor. The temperature sensor is respectively installed at the dry channel input end and output end of the indirect evaporative cooler, and the humidity sensor is installed at the adsorption zone outlet. The regeneration zone also includes a filtration unit and a conveying unit. The filtration unit purifies the air in the regeneration zone, and the conveying unit transports the treated regenerated air to a designated area for reuse.
[0008] Furthermore, in step 3 of the aforementioned waste heat-driven dehumidification and cooling method for data center containers, a humidity sensor monitors the humidity of the dry air at the outlet of the adsorption zone, collecting the humidity w1 at the outlet of the adsorption zone. The real-time data w1 is compared with a preset threshold. If it is greater than the threshold, the main control PLC adjusts the rotation speed of the dehumidification rotor adsorption zone; otherwise, the rotation speed of the dehumidification rotor adsorption zone is maintained. The temperature sensor monitors the inlet temperature t1 and outlet temperature t2 of the dry air in the dry channel. It determines whether the inlet and outlet temperature difference Δt = |t1 - t2| is within the preset threshold. If it is, the main control PLC maintains the current flow rate of circulating water and the flow rate of regenerated air; otherwise, it adjusts the flow rate of circulating water and the flow rate of regenerated air.
[0009] This invention also provides a waste heat-driven data center container dehumidification and cooling system, including a main control PLC, a heat pump condenser, a dehumidification impeller, and an indirect evaporative cooler. The dehumidification impeller includes a regeneration zone and an adsorption zone. The main control PLC is electrically connected to other components to control the dehumidification and cooling process. The heat pump condenser raises the temperature of the medium-temperature return air exhausted from the servers in the data center container to 45-60°C, forming a regenerative heat source that is delivered to the regeneration zone of the dehumidifier rotor to recover the air in the regeneration zone. The adsorption zone adsorbs humid and hot outdoor air to form dry air, and the heat effect of adsorption raises the temperature of the dry air. The humidity of the dry air at the outlet of the adsorption zone is monitored; when the humidity exceeds a set threshold, the rotation speed of the dehumidification rotor's adsorption zone is adjusted. Dehumidified dry air is introduced into the dry channel of the indirect evaporative cooler, while circulating water and regeneration zone air are introduced into the wet channel of the indirect evaporative cooler for direct contact, achieving isenthalpic cooling of the regeneration zone air. The dry air in the dry channel and the airflow in the wet channel exchange sensible heat while isolating moisture exchange, thus cooling the dry air. The inlet and outlet temperatures of the dry air in the dry channel are monitored in real time, and the flow rate of the circulating water and the flow rate of the regeneration air are adjusted based on the temperature difference. If the temperature of the dry air cooled by sensible heat exchange meets the air supply requirements, it will be directly sent into the data center container; otherwise, auxiliary cooling will be performed to bring the temperature of the dry air up to the required level before it is sent into the data center container.
[0010] Furthermore, the heat pump condenser of the waste heat-driven data center container dehumidification and cooling system is connected to the return air plenum of the data center container to receive the medium-temperature return air discharged from the servers collected by the return air plenum. The regeneration zone in the dehumidification rotor is connected to the output end of the heat pump condenser, and receives the regenerated heat source after its temperature has been increased. The indirect evaporative cooler includes a heat exchange core, which has mutually isolated dry and wet channels.
[0011] Furthermore, the adsorption zone of the dehumidification rotor in the waste heat-driven data center container dehumidification and cooling system is made of silica gel or molecular sieve adsorption material, achieving a dehumidification efficiency of no less than 80% for outdoor humid and hot air. The dry and wet channels of the heat exchange core are made of corrosion-resistant materials, and the heat transfer coefficient between them is ≥50W / (m²・K).
[0012] Furthermore, the dehumidification and cooling system of the data center container based on waste heat drive also includes a temperature sensor and a humidity sensor. The temperature sensor is respectively installed at the dry channel input end and output end of the indirect evaporative cooler, and the humidity sensor is installed at the adsorption zone outlet. The regeneration zone also includes a filtration unit and a conveying unit. The filtration unit purifies the air in the regeneration zone, and the conveying unit transports the treated regenerated air to a designated area for reuse.
[0013] Furthermore, the humidity sensor in the waste heat-driven data center container dehumidification and cooling system monitors the humidity of the dry air at the outlet of the adsorption zone, collecting the humidity w1 at the outlet of the adsorption zone. The real-time data w1 is compared with a preset threshold. If it is greater than the threshold, the main control PLC adjusts the rotation speed of the dehumidification rotor adsorption zone; otherwise, the rotation speed of the dehumidification rotor adsorption zone is maintained. Temperature sensors monitor the inlet temperature t1 and outlet temperature t2 of the dry air in the dry channel, and determine whether the inlet and outlet temperature difference Δt = |t1 - t2| is within the preset threshold. If it is, the main control PLC maintains the current flow rate of circulating water and the flow rate of regenerated air; otherwise, it adjusts the flow rate of circulating water and the flow rate of regenerated air.
[0014] The advantages of this invention are: By innovatively combining heat pump-driven dehumidification rotor with indirect evaporative cooling technology, a technological breakthrough has been achieved in the temperature control system of data center containers. Utilizing low-grade waste heat from data center return air at 26-35℃, the system is boosted to 45-60℃ by a high-efficiency heat pump to drive the dehumidification rotor for regeneration. Combined with the dehumidification rotor and indirect evaporative cooler, it can significantly reduce dehumidification energy consumption while ensuring strict isohumidity cooling, enabling stable control of PUE in high-temperature and high-humidity areas. Furthermore, through waste heat cascade utilization technology and high-efficiency rotor dehumidification technology, it not only solves the pain points of large humidity fluctuations and high energy consumption in existing solutions, but also achieves reliable operation in extreme high-temperature and high-humidity environments. This provides a humidity control solution for edge computing and modular data centers that combines energy efficiency, stability, and economy. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram illustrating the principle of the method of this invention.
[0017] Figure 2 This is a schematic diagram of the dry and wet channels in the heat exchange core of the present invention.
[0018] Figure 3 This is a schematic diagram of the control logic in the method of the present invention.
[0019] Figure 4This is a diagram showing the location of the main equipment unit inside the data center container.
[0020] Figure 5 This is a schematic diagram of the internal structure of the device's main unit.
[0021] Figure label: 1 is the water tank, 2 is the server rack, 3 is the main equipment unit, 31 is the dehumidification rotor adsorption area, 32 is the dehumidification rotor regeneration area, 33 is the heat pump condenser, 34 is the data center return air static pressure box, 35 is the indirect evaporative cooler, and 4 is the data center container. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. Example
[0023] This invention provides a waste heat-driven dehumidification and cooling method for data center containers, achieving energy-saving dehumidification and cooling in high-temperature and high-humidity environments. First, a high-efficiency heat pump is used to increase the return air temperature of the data center, serving as the regeneration heat source for the dehumidification impeller, driving its regeneration. Simultaneously, outdoor humid air undergoes deep dehumidification in the adsorption zone of the dehumidification impeller, causing its temperature to rise due to the adsorption heat effect. The regenerated air and circulating water directly contact each other in the wet channel of the heat exchange core, achieving cooling capacity after isenthalpic cooling. The dehumidified dry air flows through the dry channel of the heat exchange core, only being cooled without being humidified. The two airflows exchange sensible heat under the premise of complete isolation from moisture exchange. If the dehumidified air is cooled to the supply air temperature, it is sent to the computer room; if the supply air requirements are not met, mechanical refrigeration is required. The regenerated air can be considered for secondary recycling.
[0024] The process can be referenced as follows: Step 1: Install a dehumidification and cooling system in data center container 4. Data center container 4 also houses server rack 2 and water tank 1. The dehumidification and cooling system within the main equipment unit 3 includes a main control PLC, a heat pump condenser 33, a dehumidification impeller, and an indirect evaporative cooler 35. The dehumidification impeller includes a regeneration zone 32 and an adsorption zone 31. The main control PLC is electrically connected to other components to control the dehumidification and cooling process. Step 2: The heat pump condenser 33 raises the temperature of the medium-temperature return air (26-35℃) exhausted from the servers in the data center container to 45-60℃, forming a regenerative heat source that is delivered to the regeneration zone 32 of the dehumidifying impeller to recover the air in the regeneration zone. The return air, driven by a regeneration fan, flows through the condenser of the heat pump condenser 33. The heat pump condenser 33 consumes electrical energy and, through a reverse Carnot cycle, upgrades the low-grade waste heat in the return air to high-grade heat energy, heating it to a high-temperature regeneration hot air of 45-60℃. This hot air is then sent to the regeneration zone 32 of the dehumidifying impeller to purge the impeller, causing the water to separate and achieving continuous regeneration of the impeller. The high-temperature, high-humidity exhaust gas generated after regeneration, i.e., the regeneration exhaust air, can be introduced into the wet passage of the indirect evaporative cooler 35 as secondary air for reuse.
[0025] Step 3: Adsorption zone 31 adsorbs hot and humid outdoor air to form dry air. The heat effect of adsorption raises the temperature of the dry air. The humidity of the dry air at the outlet of the adsorption zone is monitored. When the humidity exceeds a set threshold, the rotation speed of the dehumidification rotor adsorption zone is adjusted. Simultaneously with the regeneration process, hot and humid outdoor fresh air enters under the drive of the process fan and flows through the adsorption zone 31 of the dehumidification rotor. At this point, the adsorption material on the surface of the dry rotor section that just exited the regeneration zone 32 strongly adsorbs water vapor from the fresh air, significantly reducing the moisture content of the outlet air and achieving deep dehumidification. This process is accompanied by the release of adsorption heat, which raises the temperature of the dehumidified air, forming hot and dry air.
[0026] Step 4: Dehumidify the dry air and send it into the dry channel of the indirect evaporative cooler. Send the circulating water and the air in the regeneration zone into the wet channel of the indirect evaporative cooler to directly contact each other and achieve isenthalpic cooling of the air in the regeneration zone. The dry air in the dry channel and the airflow in the wet channel exchange sensible heat under the premise of isolating moisture exchange, so as to achieve cooling of the dry air. The inlet and outlet temperatures of the dry air in the dry channel are monitored in real time, and the flow rate of the circulating water and the flow rate of the regeneration air are adjusted according to the temperature difference.
[0027] The high-temperature, dry air discharged from the adsorption zone 31 immediately enters the dry channel of the indirect evaporative cooler 35. Simultaneously, air from the regeneration zone enters the wet channel driven by a secondary fan. A circulating water pump connected to the water tank 1 pumps water to evenly distribute it across the wet channel walls. The air in the regeneration zone comes into contact with the water film, undergoing isenthalpic evaporative cooling and absorbing a large amount of heat, causing the wet channel wall temperature to drop to near the outdoor wet-bulb temperature. The dry air in the dry channel exchanges sensible heat with the cold wall through the wall surface, resulting in a significant temperature decrease while maintaining a strictly constant moisture content, thus efficiently completing the core isohumid cooling process.
[0028] Step 5: If the temperature of the dry air cooled by sensible heat exchange meets the air supply requirements, it will be directly sent into the data center container 4; if not, auxiliary cooling will be performed to bring the temperature of the dry air up to the required level before it is sent into the data center container 4. Example
[0029] Based on Example 1, in step 1, the heat pump condenser 33 is connected to the return air plenum 34 of the data center container 4 to receive the medium-temperature return air discharged from the server collected by the return air plenum 34. The regeneration zone 32 in the dehumidification rotor is connected to the output end of the heat pump condenser 33, and receives the regenerated heat source after its temperature has been increased. The indirect evaporative cooler 35 includes a heat exchange core, which has a dry channel and a wet channel that are isolated from each other.
[0030] The adsorption zone 31 of the dehumidifying rotor is made of silica gel or molecular sieve adsorption material, and its dehumidification efficiency for outdoor hot and humid air is no less than 80%. The dry and wet channels of the heat exchange core are made of corrosion-resistant materials, and the heat transfer coefficient between them is ≥50W / (m²・K). Example
[0031] Based on Examples 1 and 2, the dehumidification cooling system host 3 in step 1 further includes a temperature sensor and a humidity sensor. The temperature sensor is respectively installed at the dry channel input end and output end of the indirect evaporative cooler 35, and the humidity sensor is installed at the outlet of the adsorption zone 31. The regeneration zone 32 also includes a filtration unit and a conveying unit. The filtration unit purifies the air in the regeneration zone, and the conveying unit delivers the treated regenerated air to a designated area for reuse.
[0032] In step 3, the humidity sensor monitors the humidity of the dry air at the outlet of adsorption zone 31, and collects the humidity w1 at the outlet of adsorption zone 31. The real-time data w1 is compared with a preset threshold. If it is greater than the threshold, the main control PLC adjusts the speed of the dehumidifying rotor adsorption zone; otherwise, the speed of the dehumidifying rotor adsorption zone is maintained. The temperature sensor monitors the inlet temperature t1 and outlet temperature t2 of the dry air in the dry channel. It determines whether the inlet and outlet temperature difference Δt = |t1 - t2| is within the preset threshold. If it is, the main control PLC maintains the current flow rate of circulating water and the flow rate of regenerated air; otherwise, it adjusts the flow rate of circulating water and the flow rate of regenerated air. Example
[0033] This invention also provides a waste heat-driven data center container dehumidification and cooling system, including a main control PLC, a heat pump condenser, a dehumidification impeller, and an indirect evaporative cooler. The dehumidification impeller includes a regeneration zone and an adsorption zone. The main control PLC is electrically connected to other components to control the dehumidification and cooling process. The heat pump condenser 33 raises the temperature of the medium-temperature return air exhausted from the servers in the data center container 4 to 45-60°C, forming a regenerative heat source that is delivered to the regeneration zone 32 of the dehumidifier rotor to recover the air in the regeneration zone. The adsorption zone 31 adsorbs humid and hot outdoor air to form dry air, and the adsorption heat effect raises the temperature of the dry air. The humidity of the dry air at the outlet of the adsorption zone 31 is monitored, and the rotation speed of the dehumidification impeller in the adsorption zone 31 is adjusted when the humidity exceeds a set threshold. The dehumidified dry air is introduced into the dry channel of the indirect evaporative cooler 35, while the circulating water and regeneration zone air are introduced into the wet channel of the indirect evaporative cooler 35 for direct contact, achieving isenthalpic cooling of the regeneration zone air. The dry air in the dry channel and the airflow in the wet channel exchange sensible heat under the premise of isolating moisture exchange, thereby achieving cooling of the dry air. The inlet and outlet temperatures of the dry air in the dry channel are monitored in real time, and the flow rate of the circulating water and the flow rate of the regeneration air are adjusted according to the temperature difference. If the temperature of the dry air cooled by sensible heat exchange meets the air supply requirements, it will be directly sent into data center container 4; otherwise, auxiliary cooling will be performed to bring the temperature of the dry air up to the required level before it is sent into data center container 4.
[0034] The information interaction and execution process of the various components in the above system are based on the same concept as the method embodiment of the present invention, and the specific details can be found in the description of the method embodiment of the present invention, and will not be repeated here.
[0035] Similarly, this invention achieves a technological breakthrough in data center container temperature control systems by innovatively combining a heat pump-driven dehumidification impeller with indirect evaporative cooling technology. It utilizes low-grade waste heat from data center return air at 26-35℃, which is then boosted to 45-60℃ by a high-efficiency heat pump to drive the dehumidification impeller for regeneration. Combined with the dehumidification impeller and indirect evaporative cooler, it significantly reduces dehumidification energy consumption while ensuring strict isohumidity cooling, enabling stable PUE control in high-temperature and high-humidity areas. Furthermore, through waste heat cascade utilization technology and high-efficiency impeller dehumidification technology, it not only solves the pain points of large humidity fluctuations and high energy consumption in existing solutions but also achieves reliable operation in extreme high-temperature and high-humidity environments. This provides a humidity control solution for edge computing and modular data centers that combines energy efficiency, stability, and economy.
[0036] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.
Claims
1. A waste heat-driven dehumidification and cooling method for data center containers, characterized in that: include: Step 1: Install a dehumidification and cooling system in the data center container. The system includes a main control PLC, a heat pump condenser, a dehumidification impeller, and an indirect evaporative cooler. The dehumidification impeller includes a regeneration zone and an adsorption zone. The main control PLC is electrically connected to other components to control the dehumidification and cooling process. Step 2: The heat pump condenser raises the temperature of the medium-temperature return air exhausted from the servers in the data center container to 45-60℃, forming a regenerative heat source that is delivered to the regeneration zone of the dehumidifier rotor to recover the air in the regeneration zone. Step 3: The adsorption zone adsorbs humid and hot outdoor air to form dry air, and the heat effect of adsorption raises the temperature of the dry air. The humidity of the dry air at the outlet of the adsorption zone is monitored. When the humidity exceeds a set threshold, the rotation speed of the dehumidification rotor adsorption zone is adjusted. Step 4: The dehumidified dry air is introduced into the dry channel of the indirect evaporative cooler, while the circulating water and regeneration zone air are introduced into the wet channel of the indirect evaporative cooler for direct contact, achieving isenthalpic cooling of the regeneration zone air. The dry air in the dry channel and the airflow in the wet channel exchange sensible heat while isolating moisture exchange, thus cooling the dry air. The inlet and outlet temperatures of the dry air in the dry channel are monitored in real time, and the flow rate of the circulating water and the flow rate of the regeneration air are adjusted according to the temperature difference. Step 5: If the temperature of the dry air cooled by sensible heat exchange meets the air supply requirements, it will be directly sent into the data center container; if not, auxiliary cooling will be performed to bring the temperature of the dry air up to the required level before it is sent into the data center container.
2. The waste heat-driven dehumidification and cooling method for data center containers according to claim 1, characterized in that: In step 1, the heat pump condenser is connected to the return air plenum of the data center container to receive the medium-temperature return air discharged from the servers, which is collected in the return air plenum. The regeneration zone in the dehumidification rotor is connected to the output end of the heat pump condenser, and receives the regenerated heat source after its temperature has been increased. The indirect evaporative cooler includes a heat exchange core, which has mutually isolated dry and wet channels.
3. The waste heat-driven dehumidification and cooling method for data center containers according to claim 2, characterized in that: In step 1, the adsorption zone of the dehumidifying rotor is made of silica gel or molecular sieve adsorption material, with a dehumidification efficiency of no less than 80% for outdoor humid and hot air. The dry and wet channels of the heat exchange core are made of corrosion-resistant materials, and the heat transfer coefficient between them is ≥50W / (m²・K).
4. The waste heat-driven dehumidification and cooling method for data center containers according to claim 1, characterized in that: The dehumidification and cooling system in step 1 also includes a temperature sensor and a humidity sensor. The temperature sensor is installed at the inlet and outlet of the dry channel of the indirect evaporative cooler, respectively, and the humidity sensor is installed at the outlet of the adsorption zone. The regeneration zone also includes a filtration unit and a conveying unit. The filtration unit purifies the air in the regeneration zone, and the conveying unit transports the treated regenerated air to a designated area for reuse.
5. The waste heat-driven dehumidification and cooling method for data center containers according to claim 1, characterized in that: In step 3, the humidity sensor monitors the humidity of the dry air at the outlet of the adsorption zone, and collects the humidity w1 at the outlet of the adsorption zone. The real-time data w1 is compared with a preset threshold. If it is greater than the threshold, the main control PLC adjusts the speed of the dehumidifying rotor adsorption zone; otherwise, the speed of the dehumidifying rotor adsorption zone is maintained. The temperature sensor monitors the inlet temperature t1 and outlet temperature t2 of the dry air in the dry channel. It determines whether the inlet and outlet temperature difference Δt = |t1 - t2| is within the preset threshold. If it is, the main control PLC maintains the current flow rate of circulating water and the flow rate of regenerated air; otherwise, it adjusts the flow rate of circulating water and the flow rate of regenerated air.
6. A waste heat-driven dehumidification and cooling system for data center containers, characterized in that: It includes a main control PLC, a heat pump condenser, a dehumidifying impeller, and an indirect evaporative cooler. The dehumidifying impeller includes a regeneration zone and an adsorption zone. The main control PLC is electrically connected to other components and controls the dehumidification and cooling process. The heat pump condenser raises the temperature of the medium-temperature return air exhausted from the servers in the data center container to 45-60°C, forming a regenerative heat source that is delivered to the regeneration zone of the dehumidifier rotor to recover the air in the regeneration zone. The adsorption zone adsorbs humid and hot outdoor air to form dry air, and the heat effect of adsorption raises the temperature of the dry air. The humidity of the dry air at the outlet of the adsorption zone is monitored; when the humidity exceeds a set threshold, the rotation speed of the dehumidification rotor's adsorption zone is adjusted. Dehumidified dry air is introduced into the dry channel of the indirect evaporative cooler, while circulating water and regeneration zone air are introduced into the wet channel of the indirect evaporative cooler for direct contact, achieving isenthalpic cooling of the regeneration zone air. The dry air in the dry channel and the airflow in the wet channel exchange sensible heat while isolating moisture exchange, thus cooling the dry air. The inlet and outlet temperatures of the dry air in the dry channel are monitored in real time, and the flow rate of the circulating water and the flow rate of the regeneration air are adjusted based on the temperature difference. If the temperature of the dry air cooled by sensible heat exchange meets the air supply requirements, it will be directly sent into the data center container; otherwise, auxiliary cooling will be performed to bring the temperature of the dry air up to the required level before it is sent into the data center container.
7. A waste heat-driven data center container dehumidification and cooling system according to claim 6, characterized in that: The heat pump condenser is connected to the return air plenum of the data center container, receiving the medium-temperature return air discharged from the servers collected in the return air plenum. The regeneration zone in the dehumidification rotor is connected to the output end of the heat pump condenser, and receives the regenerated heat source after its temperature has been increased. The indirect evaporative cooler includes a heat exchange core, which has mutually isolated dry and wet channels.
8. A waste heat-driven data center container dehumidification and cooling system according to claim 7, characterized in that: The adsorption zone of the dehumidifying rotor is made of silica gel or molecular sieve adsorption material, and its dehumidification efficiency for hot and humid outdoor air is no less than 80%. The dry and wet channels of the heat exchange core are made of corrosion-resistant materials, and the heat transfer coefficient between them is ≥50W / (m²・K).
9. A waste heat-driven data center container dehumidification and cooling system according to claim 1, characterized in that: The dehumidification and cooling system also includes a temperature sensor and a humidity sensor. The temperature sensor is located at the dry channel inlet and outlet of the indirect evaporative cooler, respectively, and the humidity sensor is located at the outlet of the adsorption zone. The regeneration zone also includes a filtration unit and a conveying unit. The filtration unit purifies the air in the regeneration zone, and the conveying unit transports the treated regenerated air to a designated area for reuse.
10. A waste heat-driven data center container dehumidification and cooling system according to claim 1, characterized in that: A humidity sensor monitors the humidity of the dry air at the outlet of the adsorption zone, collecting the humidity w1 at the outlet. The real-time data w1 is compared with a preset threshold. If it exceeds the threshold, the main control PLC adjusts the rotation speed of the dehumidifying rotor adsorption zone; otherwise, the rotation speed of the dehumidifying rotor adsorption zone is maintained. Temperature sensors monitor the inlet temperature t1 and outlet temperature t2 of the dry air in the dry channel, and determine whether the inlet and outlet temperature difference Δt = |t1 - t2| is within the preset threshold. If it is, the main control PLC maintains the current flow rate of circulating water and the flow rate of regenerated air; otherwise, it adjusts the flow rate of circulating water and the flow rate of regenerated air.