CN115413202A

CN115413202A - Data center airflow processing system and method

Info

Publication number: CN115413202A
Application number: CN202211131059.5A
Authority: CN
Inventors: 秦志; 胡寅; 陈定波; 吴小雨; 马万柏; 李训治
Original assignee: Cloud Frame Co ltd
Current assignee: Cloud Frame Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2022-11-29

Abstract

The invention discloses a data center airflow processing system and a method, comprising a first exhaust device and a first heat energy conveying pipeline; a heat exchange pipeline and a microalgae culture center; the first exhaust device transmits hot air in a hot return air area of the data center to the first heat energy transmission pipeline, and the heat energy transmission pipeline transmits the hot air to the heat exchange pipeline; the heat exchange pipeline is arranged in the pool water or the pool wall of the microalgae culture center. The system also comprises a second heat energy conveying pipeline which is connected with a second air exhaust device arranged in the space above the water in the microalgae culture center pool, and the second heat energy conveying pipeline sends the air in the microalgae culture center back to the air recovery pipeline of the data center. The improved system provides necessary heat for microalgae cultivation by using the waste tail heat of the data center, and provides air for cooling and purifying for the data center by using the microalgae cultivation, so that the energy-saving and consumption-reducing efficiency is improved.

Description

Data center airflow processing system and method

Technical Field

The application relates to the technical field of data centers, in particular to energy-saving and emission-reduction processing of a data center, and specifically relates to an airflow processing system and method for the data center.

Background

Data centers generally consist of computer rooms and supporting spaces, are electronic information storage, processing and distribution centers, generate a large amount of heat by a large amount of Information Technology (IT) equipment, and need to be provided with air conditioning systems and the like to meet the air flow standards (GB 50174-2017) of temperature, humidity, dust concentration, carbon dioxide content, nitrogen oxide content and the like required by the data centers so as to maintain the normal operation and performance of the IT equipment. IT equipment and air conditioning systems are the main energy consuming equipment of a data center, and usually account for 85% of the total energy consumption of the data center. The air conditioning system is usually air conditioning equipment and/or air conditioning equipment with a fresh air system, the air conditioning equipment of the green data center is used for saving energy, the air outlet of the air conditioner is usually corresponding to a cold channel, the return air inlet of the air conditioner is corresponding to a hot channel, most of tail gas exhausted from the return air inlet is directly exhausted outdoors, the tail gas is not utilized, heat energy is wasted greatly, and adverse effects can be caused to the surrounding environment due to the fact that a large amount of heat is contained. Under some climatic conditions, the air conditioning equipment introduced into the fresh air system has the defects that fresh air contains flying floc, pollen or sand dust, and the loss of the air conditioning system is large; or the temperature of the fresh air is too low, so that the problems of power consumption increase and the like are caused.

With the modularized development and scale trend of data centers, larger sites are needed for placing machine rooms, and the data centers are gradually placed in areas with low population density, such as western areas and northern areas in China, where the air temperature is low, the temperature difference is large, the illumination at high altitude is long, and the soil is salinized. How to comprehensively and effectively utilize energy according to local conditions and realize green environmental protection, energy conservation and emission reduction becomes a problem needing to be considered for green data center construction and energy utilization.

Microalgae is an important biological resource, is rich in protein and unsaturated fatty acid, and has wide application in the aspects of preparation of medical health products, aquaculture, water quality improvement, soil improvement and the like. Different algae varieties have different requirements on the environment, but basically prefer alkalinity and need sufficient photo-heat, and the microalgae can also absorb carbon dioxide and nitrogen oxides and release oxygen in the growth process. The northwest region has the characteristics of long illumination at high altitude, salinization of land and the like, and has the advantages of being suitable for microalgae cultivation, but the important problem to be solved for realizing the cultivation of microalgae in a cold high altitude region is that a large amount of energy is consumed for providing enough environment temperature for microalgae cultivation.

Disclosure of Invention

The invention aims to provide a data center airflow processing system and a method, which are used for solving the problems in the data center and microalgae cultivation mentioned in the background technology.

A first aspect of the invention provides a data center airflow handling system, the system comprising, a first exhaust; a first heat energy conveying pipeline and a microalgae culture center; the first exhaust device is connected with the first heat energy conveying pipeline, and tail gas of the data center is exhausted to the first heat energy conveying pipeline through the first exhaust device and is conveyed to the microalgae cultivation center. The airflow containing a large amount of heat exhausted from the data center is thus transferred to the microalgae cultivation center, which requires heat to maintain the growth temperature of the microalgae, and utilized.

In some embodiments, the data center may be operated to produce substances or gases that are harmful to the data center or to the data center personnel, and therefore the exhaust air stream from the data center may contain a concentration of carbon dioxide in addition to the heat generated by the data center equipment, and the heat and substances in the air stream supplied from the data center to the microalgae cultivation center provide the heat and carbon dioxide required for the growth of microalgae, and the growth of the microalgae produces oxygen, which purifies the air.

In some embodiments, the first thermal energy transfer duct within the microalgae cultivation center has a plurality of openings arranged for the flow of air exiting the data center to be conveyed to a location within the microalgae cultivation center that facilitates growth of the microalgae. In this case, the air flow will be distributed into the microalgae culture center through the openings on the pipes, and the positions of the heat energy transfer pipes and the openings can be adjusted in combination with the distribution positions of the microalgae, so as to optimize the specific points of supply of the air flow, i.e., heat energy, carbon dioxide and nitrogen oxides, to facilitate optimizing the microalgae culture, and/or to optimize the air flow circulation to return the purified and cooled air to the data center.

Preferably, the system further comprises a second air exhaust device and a second heat energy conveying pipeline, the second air exhaust device exhausts air of the microalgae cultivation center to the second heat energy conveying pipeline, and the second heat energy conveying pipeline is communicated with the data center.

The air in the microalgae culture center is rich in oxygen through photosynthesis of microalgae, so that the micro-dust is removed, corrosive gas to a data center and substances harmful to personnel and equipment in the data center are removed, and the air has certain humidity and is favorable for removing the electrostatic effect of the data center.

The air flow discharged from the data center is hot air discharged from a hot air return area of the data center, and the hot air provides heat energy for the microalgae culture center to help the microalgae culture center reach the required culture temperature.

Regarding the temperature of the gas stream in the present invention:

in embodiments of the invention, the exhaust from the data center is hot air from a hot return air area, and for most of the time in certain areas, such as the transition seasons between spring and autumn and winter, the exhaust temperature is higher than the outdoor ambient temperature and also higher than the cultivation temperature required to be maintained in the microalgae cultivation center. After the air in the data hot return air area is transmitted to the microalgae culture center, the air is cooled and purified through the environment in the microalgae culture center and then is sent back to the data center, and the air with the temperature closer to that of the cold channel is provided for the data center. For example, the average outdoor ambient temperature in Ningxia winter in China is about 2 ℃ to-10 ℃, and the outdoor ambient temperature in spring is about 6 ℃ to 6 ℃; the culture temperature required to be maintained in the microalgae culture center is approximately between 25 and 35 ℃. The data center hot return air zone temperature is approximately 35 ℃ to 40 ℃, while the data center inlet air zone temperature is approximately 18 ℃ to 27 ℃.

Furthermore, in some embodiments of the invention, the air from the microalgae cultivation center is more suitable as fresh air to be delivered to the data center than the outdoor air most of the time, especially during periods of low outdoor air temperature and poor outdoor air quality. For example, the climate characteristics of the Ningxia region in China have the characteristics of low temperature and large amount of wind and sand in the outdoor air in winter and spring, and the quality of the air recovered from the microalgae culture center to the data center is better than that of the return air of the data center and better than that of the external fresh air in the above conditions, so that the microalgae culture center is suitable for being used as the fresh air or the inlet air in the airflow of the data center.

In some embodiments of the present invention, the gas stream processing system according to the present invention comprises a heat exchange pipeline connected to the first heat energy transmission pipeline in the microalgae cultivation center, and a second heat energy transmission pipeline connected to the heat exchange pipeline, wherein the second heat energy transmission pipeline is communicated with the data center, and air from the data center flows back to the data center after being transmitted to the second heat energy transmission pipeline through the heat exchange pipeline by the first heat energy transmission pipeline. In these embodiments, the exhaust air flow from the data center is not distributed through the outlet in the microalgae cultivation center, but is kept in circulation in the pipeline, and heat energy is exchanged to the microalgae cultivation center through the wall of the heat exchange pipeline, so as to provide heat for the microalgae cultivation center for growing microalgae. And then, the air flow subjected to heat exchange and temperature reduction in the pipe is continuously transmitted and managed to return to an air conditioning system of the data center through second heat energy, and enters a cold channel of the data center after being processed. The air flow flowing back to the data center after heat exchange and temperature reduction of the microalgae culture center reduces the refrigeration energy consumption of the air conditioner.

In some embodiments, the heat exchange conduit is disposed in or on a wall of a tank of a microalgae cultivation center to increase heat exchange efficiency and/or facilitate microalgae growth. More preferably, the heat exchange pipeline is arranged at the bottom of the microalgae culture pond.

Preferably, the first and second thermal energy transfer pipes are made of heat insulating material; the heat exchange tube is made of materials with corrosion resistance, rust resistance, pressure resistance and high heat conductivity coefficient. The heat energy conveying pipeline needs to maintain the heat energy of the air flow circulating in the pipeline, and the loss of the heat energy is reduced. The heat exchange pipeline needs to radiate heat energy of airflow circulating in the pipeline to perform sufficient heat exchange with the microalgae culture center.

Preferably, a sensor is arranged in the microalgae cultivation center and/or the data center and is used for detecting environmental parameters of all parts of the microalgae cultivation center and/or the data center; the system further comprises a control center, wherein the control center controls the opening degrees of the electric air valve and the bypass valve and the starting, stopping and running of the first air exhaust device and/or the second air exhaust device according to environmental parameter information sent by one or more sensors and a preset threshold value. The control center can control the operation of the air exhaust device by comprising the operation speed and/or the operation direction.

Preferably, the environmental parameters detected by the sensors refer to one or more of temperature, humidity, air pressure, oxygen, carbon dioxide and/or nitrogen oxide concentration and dust content, and the sensors respectively or simultaneously detect at least one of the environmental parameters.

Preferably, the control center performs control through PID calculation to maintain the stable temperature, air pressure and/or other environmental parameters of the data center and the microalgae culture center.

Preferably, the gas stream processing system further comprises a bypass line in communication with the second thermal energy transfer line, and the data center controls the opening of a bypass valve in the bypass line such that the bypass line is in communication, partial communication, or isolated from the first thermal energy transfer line. The opening degree of an electric air valve in the first heat energy conveying pipeline is controlled, so that the first heat energy conveying pipeline can be communicated, partially communicated or isolated with the data center exhaust pipeline.

Preferably, the airflow treatment system regulates and treats the introduction and discharge of airflow into and/or from the data center and the microalgae cultivation center and/or further treats the introduced and discharged airflow according to different requirements of the data center and the microalgae cultivation center on environmental parameters.

Preferably, the first exhaust device is communicated with a hot return air area of the data center, and the second heat energy conveying pipeline is communicated with an air inlet area of an air conditioner of the data center.

Preferably, the airflow transmitted to the data center by the second heat energy transmission pipeline is used as air conditioner inlet air or fresh air by the data center.

Preferably, the airflow delivered to the data center by the second thermal energy delivery pipeline is directly discharged to the data center cold aisle.

Another aspect of the invention relates to a method for processing data center airflow using the data center airflow processing system of the invention, comprising the steps of:

discharging airflow exhausted from the data center to a first heat energy conveying pipeline through a first air exhaust device, and conveying the airflow to heat exchange pipelines distributed in the microalgae cultivation center through the first heat energy conveying pipeline so as to supply heat energy in the airflow to the microalgae cultivation center through the heat exchange pipelines;

and (II) cooling the air flow in the heat exchange pipeline in the microalgae culture center through the heat exchange pipeline, and transmitting the cooled air flow to a data center through a second heat energy transmission pipeline connected with the heat exchange pipeline.

In another embodiment, a method for processing airflow using a data center airflow processing system according to the present invention includes the steps of:

the method comprises the following steps that (I) air flow exhausted by a data center is exhausted to a first heat energy conveying pipeline through a first air exhaust device and is conveyed to a microalgae culture center through the first heat energy conveying pipeline and an opening of the first heat energy conveying pipeline;

and (II) the second air exhaust device exhausts the air of the microalgae culture center to a second heat energy conveying pipeline to be conveyed to a data center.

Preferably, a sensor is arranged in the microalgae culture center, an electric air valve is arranged on the first heat energy transmission pipeline and/or the second heat energy transmission pipeline, and the control center controls the opening degree of each electric air valve according to the environmental parameters detected by the sensor and in combination with a preset threshold value; and controlling the starting, stopping and running of each air exhaust device.

The environmental parameter is one or more of temperature, humidity, concentration of oxygen and/or carbon dioxide, dust content.

Preferably, the air in the data center hot channel is recovered to a hot return air area by an air conditioning system and then is discharged to the first heat energy conveying pipeline through the first air discharging device; and air flow in the second heat energy transmission pipeline flows back to the data center air conditioning system, and after treatment, air conditioning air supply is sent to a data center cold channel.

Preferably, the second heat energy transmission pipeline is connected with an air inlet area of a ventilation system, an air conditioning system, a refrigeration system and/or a fresh air system of the data center and used as high-quality return air or fresh air.

According to the system and the method for processing the airflow for the data center, hot air to be discharged in a hot air return area of the data center is discharged to the first heat energy conveying pipeline through the first air exhaust device and introduced into the microalgae culture center, heat energy is exchanged to the microalgae culture center through the heat exchange pipeline, and the temperature of the microalgae culture center is raised by utilizing tail heat energy of the data center; then the airflow with the temperature reduced by heat exchange in the microalgae culture center in the heat exchange pipe is conveyed to a data center. Because the cooled air flow is close to the air outlet temperature required by the data center, the refrigeration power of a refrigeration system and an air conditioning system is reduced, and the energy is saved and the consumption is reduced. Specifically, the temperature of the air flow in the hot return air area required to be discharged by a general data center is about 35 to 40 degrees, and the air flow in the air flow passes through the first thermal energy transmission pipeline and the heat exchange pipeline, so that the temperature of the microalgae culture center can be raised (the temperature required by the microalgae culture center is 25 to 35 degrees, for example). After the heat exchange pipeline exchanges heat in the microalgae culture center, the temperature of the airflow is reduced, and the temperature of the airflow which flows back to the data center through the second heat energy conveying pipeline is close to the temperature of a cold channel required by the data center, namely 18-27 ℃, so that the heat energy contained in the airflow is reasonably and effectively recycled.

In some embodiments, the tail hot air flow discharged from the data center is directly discharged into the microalgae culture center to raise the temperature of the microalgae culture center, and then the air in the space of the microalgae culture center is conveyed to the data center through the second air exhaust device and the second heat energy conveying pipeline to be used as return air or fresh air of the air conditioning system of the data center. Because the microalgae digests carbon dioxide and nitrogen oxides through photosynthesis to produce oxygen and has certain humidity to remove dust particles in the growth process, the air collected from the microalgae culture center and returned to the data center is cooled by the microalgae culture center, and the temperature of the air can meet the requirements of the data center on fresh air and internal circulation return air temperature. And the air purified by the microalgae culture center removes components such as carbon dioxide, nitric oxide, dust and the like harmful to the data center, and simultaneously contains oxygen and proper humidity which are friendly to operators of the data center, thereby providing high-quality fresh air or return air for the data center. Therefore, according to the data center airflow processing system and method for the data center, tail heat and airflow components in the airflow needing to be discharged of the data center are effectively utilized, the advantages that sunshine-grown soil alkalinity in a high-altitude area is suitable for microalgae growth and the like are utilized, necessary heat is provided for microalgae cultivation, the microalgae cultivation center is utilized to provide cooled air and/or purified air for the data center, the energy-saving and consumption-reducing efficiency of the airflow of the data center and the microalgae cultivation center is optimized, and meanwhile the data center and method have the green and environment-friendly effects.

In an application scene with lower outdoor temperature, the temperature caused by tail hot air flow discharged by the data center provides a proper temperature environment for the growth of microalgae in the microalgae culture center. The temperature of the air after heat exchange of the green alga culture cabin is lower than that of tail gas discharged by a data center machine room, but is much higher than that of the air outside, so that the energy consumption is reduced. For example, when the outdoor temperature is below zero in a winter scene in the northwest region, the temperature of the air recovered from the microalgae culture center is 25-30 ℃. The air recovered from the air of the microalgae culture center is the air purified by the microalgae, the discharged carbon dioxide and nitrogen oxides promote the growth of the microalgae through the photosynthesis of the microalgae, the air is purified after being converted into oxygen, favorable working conditions are provided for data center workers, the air of the microalgae pool has proper humidity, the electrostatic effect of the data center is favorably removed, and the air is the humid oxygen-enriched purified air required in winter. Therefore, the air returned to the data center machine room is delivered to the microalgae culture center, and the fresh air with low energy consumption and high quality is provided for the data center machine room.

Drawings

The features of the solution according to the invention are illustrated below with reference to the accompanying drawings:

FIG. 1 illustrates an exemplary view of the airflow profile of a prior art data center (2).

Fig. 2 shows a schematic view of an air flow treatment system (1) for a data center (2) and a microalgae cultivation center (5) according to an embodiment of the invention.

Fig. 3 shows a schematic view of an air flow treatment system (1) for a data center (2) and a microalgae cultivation center (5) according to another embodiment of the present invention.

Fig. 4 illustrates a control flow diagram of the airflow control system of the data center (2) according to the present invention.

Fig. 5 shows a schematic view of an embodiment of the tail heat flow of multiple data centers (2) to a microalgae cultivation center (5) according to the invention.

Detailed Description

The invention is further described in detail below with reference to the figures and examples.

The following specific examples are provided only for illustrating the present invention and are not to be construed as limiting the invention. For convenience of description, the drawings show only those portions relevant to the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

FIG. 1 illustrates an exemplary view of the airflow profile of a prior art data center (2). With reference to data center design specifications (GB 50174-2017), racks or cabinets (15) in a data center (2) may be arranged in a face-to-face, back-to-back manner. The front surface of the frame or the cabinet (15) is provided with a cold channel (16), and the back surface is provided with a hot channel (17). The cold and hot channels are isolated. The cold air enters the cabinet (15) from the front side of the cabinet and flows out of the cabinet (15) from the back side of the cabinet (15). The temperature range of the air inlet area of the cabinet (15) is 18-27 ℃. The temperature difference between the air supply and the return air is 8-15 ℃. The hot aisle (17) airflow is directed by the data center (2) air conditioning system to a hot return air zone (18) that is at a temperature of approximately 35 ℃ to 40 ℃. The heat of the data center is directly discharged to the outside without being utilized. These hot gas streams are not utilized, heat energy is wasted in large quantities, and the surrounding environment may be affected. The direction of the airflow of the data centre (2) is indicated by arrows.

It should be understood that the cold and hot air channels of the data center (2) in the prior art may also be arranged in other ways, such as closing the cold channel (16) or closing the hot channel (17), in this configuration, the outlet air of the air conditioner of the data center (2) is also sent to the cold channel (16), and the return air inlet collects the hot return air from the hot channel (17). The heat of the data center is directly discharged to the outside without utilization.

Fig. 2 shows a schematic diagram of an airflow handling system (1) for a data center (2) according to an embodiment of the invention.

In fig. 2, a hot return air area (18) of the data center (2) is provided with a first exhaust device (3). The first air exhaust device (3) is communicated with a hot return air area (18) of the data center (2) and exhausts hot air in the hot return air area (18) to the first heat energy conveying pipeline (4). The first exhaust device (3) is connected with the first heat energy conveying pipeline (4). The first thermal energy transfer pipe (4) is made of a heat insulating material, and the thermal energy of the hot air circulating therein is maintained. The first heat energy transmission pipeline (4) is continued from the data center (2) to the microalgae cultivation center (5) and is communicated with a heat exchange pipeline (9) in the microalgae cultivation center (5), and hot air is transmitted from the first heat energy transmission pipeline (4) to the heat exchange pipeline (9).

In the embodiment, the microalgae culture center (5) is provided with a culture pond (20). The heat exchange pipeline (9) is made of materials with corrosion resistance, rust resistance, pressure resistance and high heat conductivity coefficient, and the surface of the pipe wall of the heat exchange pipeline can be provided with fins or corrugated contact surfaces for increasing the heat exchange surface area. Heat exchange pipeline (9) of being connected at the air current upper reaches with first heat energy transfer pipe way (4) extend to the bottom of breeding pond (20), the hot-air in the pipeline carries out indirect heat transfer through the solution in pipe wall and the breed pond (20), the little algae solution that presses close to heat exchange pipeline (9) is because of being heated the volume expansion that rises of temperature, form the form of turning up naturally in breeding pond (20), breed the interior little algae solution that is not heated of pond (20) simultaneously and can sink to heat exchange pipeline (9) surface again naturally, so reciprocal, can make the interior solution circulation even heating of whole breed pond (20), guaranteed the timely exchange of pond oxygen and carbon dioxide simultaneously. These are all very beneficial to the growth of microalgae. The tail heat of the data center (2) provides required temperature for microalgae cultivation, and is utilized.

After heat exchange, the temperature of water in the microalgae culture pond (20) rises, and the temperature of air in the heat exchange pipeline (9) falls. The cooled air is returned to the data centre (2) via a second heat transfer line (8) connected downstream in the air flow to the heat exchange line (9). The second heat energy transfer pipeline (8) can also be made of a heat-insulating material, so that the temperature of the air flow in the pipeline can be maintained. The air flow in the second heat energy conveying pipeline (8) is conveyed to the data center (2), can be processed by an air conditioning system and is discharged into a cold channel (16) of the data center through an air conditioning air outlet. The temperature of the cooled air is much lower than that of the hot return air area of the air system and is close to the air temperature required by the cold channel (16); in cold weather, the temperature is far higher than the outdoor temperature, so that the energy consumption of air-conditioning refrigeration or heating is reduced, and the energy-saving effect of the data center (2) is achieved.

A sensor (10) can be arranged in the microalgae culture center (5) and/or the data center (2) to detect environmental parameters such as temperature, humidity, carbon dioxide concentration, oxygen concentration and dust content in the microalgae culture center (5). In this embodiment, a temperature sensor (10) is installed near a microalgae culture pond (20), a carbon dioxide concentration sensor (10) is installed in the upper space of the microalgae culture pond (20), and a pressure sensor (10) and a temperature sensor (10) are installed in a cold path (16) and a hot path (17) of a data center (2). According to the requirement of heat exchange speed, the heat exchange pipeline (9) can be also set into a multi-path network to increase the heat exchange area.

An electric air valve (11) is arranged in the first heat energy transmission pipeline (4), and the opening degree of the electric air valve (11) can control the closing, opening and/or partial opening of the first heat energy transmission pipeline (4).

A control unit (12) can be arranged in the data center (2), the control unit (12) receives signals from the sensors (10), and can control the closing, opening or partial opening of the first thermal energy transmission pipeline (4) through an electric air valve (11) arranged in the pipeline and control the starting, stopping and running of the air exhaust devices (3,7, 19) according to preset threshold values. When the electric air valve (11) in the first heat energy transmission pipeline is closed, the air flow in the first heat energy transmission pipeline cannot be transmitted to the heat exchange pipeline (9).

Furthermore, the control unit (12) can also control the operation and start-stop of the first exhaust device (3) to control the speed of the air flow discharged from the data center (2) to the first thermal energy transfer pipeline (4), and start-stop.

The microalgae culture center (5) is also provided with a third air exhaust device (19) which is used for exhausting the air in the culture bin (5) to the outside when necessary. The control center (12) can control the start, stop and operation of the third air exhaust device.

In other embodiments, a bypass pipeline (13) can be communicated between the first thermal energy conveying pipeline (4) and the second thermal energy conveying pipeline (8). When the opening degree of the electric air valve (11) in the first heat energy conveying pipeline (4) is reduced or closed, the bypass valve (14) is opened or increased, the air flow discharged from the first air discharging device (3) is shunted or diverted to the bypass valve (14), flows to the second heat energy conveying pipeline (8) and reaches the data center (2), and the adjustment effect is achieved.

The data center airflow control system (1) can also test the temperature of pool water in the culture pool (20) and the air pressure and temperature of a cold and hot channel of the data center (2) according to sensors (10) distributed in the data center (2) and the microalgae culture center (5), and transmit the air pressure and temperature to the control center, and the control center controls the airflow processing system (1) according to a preset threshold value.

Fig. 3 shows a schematic diagram of an airflow handling system for a data center (2) according to another embodiment of the invention. Similar to the embodiment of fig. 2, the hot return air area (18) of the data center (2) is provided with a first air exhaust device (3), hot air in the hot return air area (18) is exhausted to a first thermal energy conveying pipeline (4) through the first air exhaust device (3), and the first thermal energy conveying pipeline (4) conveys the hot air to the microalgae culture center (5). The present embodiment is provided with a second thermal energy transfer line (8). The second heat energy conveying pipeline (8) conveys the airflow exhausted from the microalgae culture center (5) to an air conditioning system of the data center (2). The air conditioning system of the data center (2) processes the airflow and discharges the airflow to a cold channel (16) of the data center (2). The data center (2) and the microalgae culture center (5) can also be provided with a plurality of sensors (10) for detecting various environmental parameters, and an electric air valve (11) and a bypass valve (14) are arranged in the heat energy conveying pipeline (4,8) and the bypass pipeline (13). The control center controls the electric air valve (11), the bypass valve (14) and the exhaust device according to the signal of the sensor (10) and a preset threshold value, and controls the starting, the stopping and the operation of the electric air valve, so that the speed and the direction of the air flow are controlled. The following mainly describes the differences between the embodiment of fig. 3 and the embodiment of fig. 2.

The embodiment in fig. 3 differs from the embodiment in fig. 2 in that:

in the embodiment shown in fig. 2, the air flow always circulates in the pipeline, and exchanges heat with the microalgae culture center (5) through the pipe wall of the heat exchange pipeline and the water in the microalgae culture pond to raise the temperature in the microalgae culture center (5) and reduce the temperature of the air flow flowing back to the data center (2).

While fig. 3 shows an embodiment without the heat exchange piping (9), the first thermal energy transfer piping (4) has a plurality of openings (6) in the microalgae cultivation center (5), the air flow in the first thermal energy piping is distributed in the position favorable for microalgae cultivation through these openings (6), the hot air from the data center (2) is mixed with the air in the microalgae cultivation center (5), raising the temperature in the microalgae cultivation center (5) and bringing carbon dioxide required for the growth of the microalgae; in the growing process of the microalgae, oxygen is released to remove dust particles, the temperature and the humidity are favorably adjusted, and the air is purified. In the embodiment, a second air exhaust device (7) is arranged in the microalgae culture center (5), and air in the microalgae culture center (5) is exhausted to a second heat energy conveying pipeline (8) and conveyed to an air conditioning system of a data center (2) and is exhausted into a data center cold channel (16) after being processed by the air conditioning system. The air in the microalgae culture center (5) is lower than the temperature of the hot air return area of the data center (2) and is closer to the temperature of the cold channel of the data center (2).

Fig. 4 illustrates a control flow diagram of the airflow control system of the data center (2) according to the present invention. In the embodiment, the sensor (10) tests the temperature of the pool water, the pressure sensor tests the air pressure of the cold and hot channels of the data center, and the measured data are transmitted to the control center (12). After the system is started, in an initial mode, the rotating speed of the first exhaust device (3) is 50%, the opening degrees of the bypass valve (14) and the electric air valve (11) are 50%, and the set temperature SP of pool water is obtained; run time t1 under this condition. After the time T1, the sensor (10) tests the temperature of the water in the culture pond (20), and the control center calculates the difference delta T between the temperature PV of the water in the pond and the set temperature SP. Performing PID (proportion integration differentiation) split-range operation, readjusting the start-stop and operation of the first exhaust device (3) and the opening degree of the bypass valve (14) and the electric air valve (11) according to the delta T and a preset threshold value, namely closing the electric air valve (11) and increasing the bypass valve (14) when the delta T is positive deviation, reducing the rotating speed of the first exhaust device (3), and keeping the lower limit of the rotating speed of the first exhaust device (3) to be not lower than a minimum set value; when the delta T is a negative deviation, the electric air valve (11) is increased, the bypass valve (14) is reduced, the rotating speed of the first air exhaust device (3) is increased, and the upper limit of the rotating speed of the first air exhaust device (3) is as follows: and keeping the pressure difference of the cold and hot channels not higher than the maximum set value of the pressure difference. Through the control flow, the temperature and the pressure difference of the cold and hot channels of the data center airflow processing system (1) are kept stable.

In the present embodiment, the main control parameter is the pool temperature PV, and the pool temperature value SP is set. Through PV and SP parameter calculation, the control center needs to control: starting, stopping and operating the first exhaust device (3), and opening degree of an electric air valve (11) and/or a bypass valve (14) in the first thermal energy conveying pipeline (4). And performing PID operation according to the PV value and the SP value. When the system is loaded, the electric air valve (11) and the bypass valve (14) in the first heat energy conveying pipeline (4) are adjusted firstly, then the first air exhaust device (3) is adjusted, when the system is unloaded, the first air exhaust device (3) is adjusted firstly, then the electric air valve (11) and the bypass valve (14) in the first heat energy conveying pipeline (4) are adjusted, and the system is adjusted in a reciprocating mode in operation, so that the system is balanced.

Specifically, after the control center (12) is started, the system firstly enters an initial mode, at the moment, the rotating speed of the first exhaust device (3) is 50%, the opening degrees of the electric air valve (11) and the bypass valve (14) in the first heat energy conveying pipeline (4) are 50% (adjustable), and the air flow processing system (1) firstly circulates for a time t0, such as 3 minutes (adjustable). t0, e.g., 3 minutes (adjustable) time has elapsed, the system enters an automatic adjustment mode, in which each device is adjusted based on the values calculated by the PID and predetermined thresholds. If the difference value delta T between the pool water temperature PV and the set temperature SP is negative deviation compared with the preset threshold value, firstly reducing the rotating speed of the first air exhaust device (3), and when the rotating speed is reduced to the minimum rotating speed, the lower limit of the rotating speed of the first air exhaust device (3) is to keep the pressure difference of the cold and hot channels not lower than the minimum set value, and then reducing the opening degree of an electric air valve (11) in the first heat energy conveying pipeline (4); the opening degree of the bypass valve (14) is increased, and the correspondence relationship between the two valve opening degrees is in inverse proportion. If the difference Δ T between the pool water temperature PV and the set temperature at this time is a positive deviation from a predetermined threshold value, then the loading of the system (1) at this time is loaded in two situations, first: when the loading demand is lower, an electric air valve (11) and a bypass valve (14) in the first heat energy conveying pipeline (4) are adjusted, the rotating speed of the first exhaust device (3) is reduced to the minimum rotating speed, and the lower limit of the rotating speed of the first exhaust device (3) is to keep the pressure difference of the cold and hot channels not lower than the minimum set value. Secondly, the method comprises the following steps: when the loading demand is high, the electric air valve (11) and the bypass valve (14) in the first heat energy conveying pipeline (4) do not meet the requirement that delta T is at a target value after adjustment, at the moment, the electric air valve (11) in the first heat energy conveying pipeline (4) is opened to the maximum, the bypass valve (14) is closed, the rotating speed of the first air exhausting device (3) is adjusted, the rotating speed is increased to the maximum rotating speed, and the upper limit of the rotating speed of the first air exhausting device (3) is as follows: and keeping the pressure difference of the cold and hot channels not higher than the maximum set value of the pressure difference. According to the loading and unloading mode, the temperature and the air pressure required by the system are stabilized through dynamic adjustment.

It should be understood that the scheme of controlling the temperature and the pressure difference of the cold and hot passages in the above embodiments is not to be construed as limiting the present invention. According to the system and the method, various environmental indexes such as air pressure, temperature, humidity, carbon dioxide content, oxygen content and/or dust content in the gas flow processing system (1) can be controlled according to actual needs by adjusting the types and the number of the sensors (10), adjusting the preset threshold value and/or using other calculation methods.

Fig. 5 shows a schematic view of an embodiment of the tail heat flow of multiple data centers (2) to a microalgae cultivation center (5) according to the invention. In the embodiment, hot air flows of hot air return areas (18) of three data centers (2) are sent to respective first heat energy conveying pipelines (4) through respective first air exhausting devices (3), and are converged outside a microalgae cultivation center (5) to one heat energy conveying pipeline to be sent to the microalgae cultivation center (5). The airflow in the microalgae culture center (5) can be as shown in fig. 2, namely, the airflow transmitted from the first heat energy transmission pipeline (4) flows to the heat exchange pipeline (9) connected with the first heat energy transmission pipeline (4), the heat flow in the pipeline can be exchanged with the pond water at the bottom of the microalgae culture pond (20) through the surface of the heat exchange pipe, so that the temperature of the pond water is increased, the temperature of the airflow in the pipeline is reduced, and then the airflow after heat exchange is continuously led to the second heat energy transmission pipeline (8) connected with the heat exchange pipeline (9), transmitted to the outside of the microalgae culture center (5) and divided into three parts to be transmitted to the three data centers (2). Air conditioning systems of the three data centers (2) process airflow returning from the microalgae culture center (5) and then discharge the airflow to the cold channel (16).

Wherein sensors (10) are arranged at each of the microalgae culture center (5) and the data center (2) to detect environmental parameters, electric air valves (11) are arranged in respective first heat energy transmission pipelines and second heat energy transmission light paths of the three data centers (2), and bypass valves (14) are arranged in respective bypass pipelines (13). The control center controls the opening degree of each electric air valve (11) and each bypass valve (14) of the three data centers (2) and each first exhaust device (3) according to the environmental parameters transmitted by the sensors (10) and by combining preset threshold values, so that the direction and the speed of air flow in the system are controlled.

The direction of airflow in this embodiment is also shown by the arrows.

The above are merely preferred embodiments of the present application and are not intended to limit the present application. Various modifications, combinations, and variations may occur to those skilled in the art. For example, the position of the sensor test, the environmental parameters of the sensor test, the calculation mode and the threshold setting can be changed according to actual needs. The matching between the data center and the microalgae culture center is also adjusted according to the specific environment. In addition, the position of the electric air valve can be adjusted according to the condition of the pipeline. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Reference numerals

1. Gas stream treatment system

2. Data center

3. First air exhaust device

4. First heat energy conveying pipeline

5. Microalgae culture center

6. Opening of the container

7. Second air exhaust device

8. Second heat energy conveying pipeline

9. Heat exchange pipeline

10. Sensor with a sensor element

11. Electric air valve

12. Control unit

13. Bypass line

14. Bypass valve

15. Machine cabinet

16. Cold channel

17. Heat tunnel

18. Hot return air zone

19. Third air exhaust device

20. A microalgae culture pond.

Claims

1. A data center (2) airflow handling system (1), comprising: the system comprises a first exhaust device (3), a first heat energy conveying pipeline (4) and a microalgae culture center (5); the first exhaust device (3) is connected with the first heat energy conveying pipeline (4), and air in the data center is exhausted to the first heat energy conveying pipeline (4) through the first exhaust device (3) and is conveyed into the microalgae culture center (5).

2. The data center (2) airflow treatment system (1) according to claim 1, characterized in that the first thermal energy transfer piping (4) has a plurality of openings (6) in a section located within the microalgae cultivation center (5), which section is arranged for conveying air from the data center (2) to a location where microalgae cultivation is facilitated.

3. The data center (2) air flow processing system (1) according to claim 2, characterized in that the air flow processing system (1) comprises a second exhaust device (7) and a second thermal energy transfer duct (8), the second exhaust device (7) discharging air of the microalgae cultivation center (5) to the second thermal energy transfer duct (8), the second thermal energy transfer duct (8) being in communication with the data center (2).

4. The data center (2) airflow treatment system (1) according to claim 1, wherein the microalgae cultivation center (5) comprises a heat exchange pipeline (9) connected with the first heat energy transmission pipeline (4) and a second heat energy transmission pipeline (8) connected with the heat exchange pipeline (9), the second heat energy transmission pipeline (8) is communicated with the data center (2), and air from the data center (2) passes through the first heat energy transmission pipeline (4) and then passes through the heat exchange pipeline (9) to exchange heat with the microalgae cultivation center (5), and then is transmitted to the second heat energy transmission pipeline (8) to flow back to the data center (2).

5. The data center (2) airflow handling system (1) according to claim 4, characterized in that the microalgae cultivation center (5) has a microalgae cultivation pond (20), the heat exchange pipeline (9) being arranged in the pond water or on the pond wall of the microalgae cultivation center (5).

6. The data center (2) airflow treatment system (1) according to claim 5, characterized in that the heat exchange line is located at the bottom of the pool water.

7. The data center (2) air flow processing system (1) according to claim 4, characterized in that the first thermal energy transfer piping (4) and the second thermal energy transfer piping (8) are made of heat insulating material; the heat exchange pipeline (9) is made of materials with corrosion resistance, rust resistance, pressure resistance and high heat conductivity coefficient.

8. The data center (2) air flow processing system (1) as claimed in claim 4, characterized in that the heat exchange line (9) surface has a ribbed or corrugated contact surface for increasing the heat exchange surface area.

9. The data center (2) air flow processing system (1) according to one of the claims 1 to 8, characterized in that sensors (10) are provided at the microalgae cultivation center (5) and/or the data center (2) for detecting environmental parameters in the microalgae cultivation center (5) and/or the data center (2); an electric air valve (11) is arranged in the first heat energy transmission pipeline (4) and/or the second heat energy transmission pipeline (8), the air flow processing system (1) further comprises a control center (12), and the control center (12) controls the starting, stopping and running of the electric air valve (11) according to information sent by the sensor (10) and in combination with a preset threshold value.

10. The airflow handling system (1) of a data center (2) according to claim 9, characterized in that the environmental parameter is one or more of temperature, humidity, concentration of oxygen and/or carbon dioxide, dust content, at least one of the environmental parameters is detected by one or more of the sensors (10) separately or simultaneously, and the control center (12) further controls the start-stop and operation of the first exhaust device (3) and/or the second exhaust device (7) according to the environmental parameter.

11. The data center (2) air flow processing system (1) according to claim 9, further comprising a bypass line (13) communicating with the first thermal energy transfer line (4) and with the second thermal energy transfer line (8), respectively, and a bypass valve (14) is provided in the bypass line (13), the bypass valve (14) being activated, deactivated and operated under the control of the control center (12) such that the bypass line (13) communicates, partially communicates or is spaced apart from the first thermal energy transfer line (4).

12. The data center (2) airflow handling system (1) according to claim 11, characterized in that when the bypass valve (14) in the bypass line (13) is opened, the airflow in the first thermal energy transfer line is introduced into the bypass line (13) and flows to the second thermal energy transfer line (8) before being sent to the data center.

13. A data center (2) air flow handling system (1) as claimed in any one of claims 3 to 8 or 10 to 12 wherein said first air exhaust means (3) communicates with a hot return air zone (18) of the data center (2) and receives air flow from a hot aisle (17) of the data center, and said second heat energy transfer duct (8) is connected to an air conditioning system of said data center (2) wherein the air flow is treated by the air conditioning system and enters a cold aisle (16) of the data center.

14. The data center air stream (2) handling system (1) according to one of the claims 4 to 8, characterized in that the air returned to the data center (2) through the second thermal energy transfer line (8) is used by an air conditioning system as high quality return air and/or fresh air.

15. The data center (2) airflow processing system (1) of claim 9, characterized in that the control center (12) calculates the difference between the temperature of the pond water in the microalgae culture pond (20) and the set temperature and the air pressure difference between the cold channel (16) and the hot channel (17), controls the start and stop and the operation of each exhaust device and the opening degree of the bypass valve and/or the electric air valve according to preset threshold values, and maintains the temperature and the pressure of the data center airflow processing system (1) stable.

16. A method of processing an airflow using the airflow processing system (1) of the data center (2) according to any one of claims 1-15, comprising the steps of:

the method comprises the following steps that (I), air exhausted from a data center (2) is exhausted to a first heat energy conveying pipeline (4) through a first air exhaust device (3) and conveyed to heat exchange pipelines (9) distributed in a microalgae cultivation center (5) through the first heat energy conveying pipeline (4), so that heat energy in the air flow is provided to the microalgae cultivation center (5) through the heat exchange pipelines (9);

and (II) cooling the air flow in the heat exchange pipeline in the microalgae culture center (5) through heat exchange of the air flow in the heat exchange pipeline, and transmitting the cooled air flow to a data center through a second heat energy transmission pipeline (8) connected with the heat exchange pipeline (9).

17. A method of processing an airflow using the airflow processing system (1) of the data center (2) according to any one of claims 1-15, comprising the steps of:

the method comprises the following steps that (I) air exhausted by a data center (2) is exhausted to a first heat energy conveying pipeline (4) through a first air exhaust device (3) and is conveyed to a microalgae culture center (5) through the first heat energy conveying pipeline (4) and an opening (6) of the first heat energy conveying pipeline;

and (II) the second air exhaust device (7) exhausts the air of the microalgae culture center (5) to a second heat energy conveying pipeline (8) and transmits the air to the data center (1).

18. A method for treating a gas stream according to claim 15 or 16, further comprising providing sensors (10) in the microalgae cultivation center (5), providing electric dampers (11) in the first thermal energy transfer piping (4) and/or the second thermal energy transfer piping (8), and controlling the start, stop and operation of each electric damper (11) by the control center (12) according to the environmental parameters detected by one or more of the sensors (10) in combination with a predetermined threshold value.

19. The method of treating a gas stream according to claim 15 or 16, wherein the environmental parameter is one or more of temperature, humidity, concentration of oxygen and/or carbon dioxide, dust content.

20. A method of handling air flow as claimed in claim 15 or 16, characterised in that the air in the hot aisle (17) of the data centre is recovered by an air conditioning system into a hot return air zone and discharged through the first exhaust means (3) into the first thermal energy transfer duct (4); and the airflow in the second heat energy transmission pipeline (8) flows back to the data center air conditioning system, and is sent to the data center cold channel (16) after being processed.

21. The method for treating an air flow according to claim 15 or 16, characterized in that the control center (12) calculates the difference between the pool water temperature and the set temperature and the air pressure difference of the cold and hot air passage, and adjusts the start and operation of the exhaust device, the opening of the bypass valve and/or the electric air valve according to the preset threshold value, so as to maintain the temperature and the pressure of the data center air flow treatment system (1) stable.