CN110553327A - Front-mounted dehumidification type data center dew point indirect evaporative cooling system and method - Google Patents
Front-mounted dehumidification type data center dew point indirect evaporative cooling system and method Download PDFInfo
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- CN110553327A CN110553327A CN201910823844.9A CN201910823844A CN110553327A CN 110553327 A CN110553327 A CN 110553327A CN 201910823844 A CN201910823844 A CN 201910823844A CN 110553327 A CN110553327 A CN 110553327A
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- dew point
- evaporative cooling
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- 238000001816 cooling Methods 0.000 title claims abstract description 72
- 238000007791 dehumidification Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title abstract description 5
- 238000005338 heat storage Methods 0.000 claims abstract description 7
- 239000003570 air Substances 0.000 claims description 75
- 238000001179 sorption measurement Methods 0.000 claims description 28
- 239000012080 ambient air Substances 0.000 claims description 20
- 230000008929 regeneration Effects 0.000 claims description 10
- 238000011069 regeneration method Methods 0.000 claims description 10
- 238000004887 air purification Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 239000002918 waste heat Substances 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 239000003463 adsorbent Substances 0.000 description 5
- 238000003795 desorption Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Gases (AREA)
- Central Air Conditioning (AREA)
Abstract
The invention provides a preposed dehumidification type data center dew point indirect evaporative cooling system and a method thereof. The invention adopts a solar energy-waste heat combined utilization technology, namely, a solar hot air device is utilized to raise the temperature of the exhaust air (waste heat) of the data center, and a phase change heat storage device is integrated to be used as a regenerative heat source of a dehumidification device, so that the energy utilization rate is improved, and the energy consumption is reduced. The invention relates to a dew point indirect evaporative cooling system, which is characterized in that a set of dehumidification system is arranged in front of the dew point indirect evaporative cooling system to dry outdoor air, so that the air entering the dew point indirect evaporative cooling system meets the requirement of air humidity for efficient operation.
Description
Technical Field
The invention relates to a dew point indirect evaporative cooling system and a dew point indirect evaporative cooling method for a data center.
background
with the rapid development of informatization, the construction pace of global data centers is obviously accelerated, the total amount of the data centers exceeds 300 thousands, the proportion of power consumption to the total power consumption of the whole world is 1.1% -1.5%, and the problem of high energy consumption thereof has attracted high attention of governments of various countries. China's data centers develop rapidly, the total amount is over 40 ten thousand, annual power consumption is over 1.5% of the power consumption of the whole society, and most of the data centers have PUE which is still more than 2.2 generally, and have larger difference compared with the international advanced level, and the energy-saving potential is huge. The energy consumption of the data center is from IT equipment, a refrigeration system, a power supply and distribution system, other devices (lighting, security and the like) and the like, wherein the energy consumption of the air-conditioning refrigeration system accounts for 30-60% of the total energy consumption of the data center, and the reduction of the energy consumption of the air-conditioning refrigeration system is important for reducing the energy consumption of the data center.
The conventional water-cooling system of the data center has low energy efficiency, and the indirect evaporative cooling technology can obtain cold energy from natural environment, so that compared with common mechanical refrigeration, the energy can be saved by 80-90% in a hot dry area, by 20-25% in a hot humid area and by more than 40% in a medium humidity area. Therefore, the conventional indirect evaporative cooling technology is more suitable for hot and dry areas, and when the technology is used in areas with higher humidity, the energy-saving efficiency is greatly reduced. The common indirect evaporative cooler only can reduce the temperature of air to the temperature of wet balls of the air by using the temperature difference between the dry balls and the wet balls of the air as a cooling driving force; and the dew point indirect evaporative cooler can reduce the temperature of the air to the dew point temperature of the air, thereby realizing the cooling capacity with larger amplitude.
Therefore, a set of dew point indirect evaporative cooling system suitable for different humidity areas is constructed, and the system is one of important ways of fully utilizing natural cold sources, reducing refrigeration energy consumption of data center air conditioners and improving energy utilization efficiency.
Disclosure of Invention
The invention provides a preposed dehumidification type data center dew point indirect evaporative cooling system and a preposed dehumidification type data center dew point indirect evaporative cooling method aiming at the problems in the prior art, so that the preposed dehumidification type data center dew point indirect evaporative cooling system and the method can be suitable for areas with different humidities.
Moreover, in order to fully utilize renewable energy sources, reduce the cooling energy consumption of the data center and aim at the characteristics of abundant residual heat of the data center, low indoor air humidity and the like, the solar energy and the residual heat are jointly utilized as desorption heat sources, and a heat storage device is added to store heat, so that the energy utilization efficiency is effectively improved, and the cooling energy consumption of the data center is reduced.
in order to achieve the purpose, the invention adopts the technical scheme that:
A front-end dehumidification type data center dew point indirect evaporative cooling system, comprising:
And the inlet end of the dehumidifying device is communicated with ambient air, the outlet end of the dehumidifying device is communicated with a dew point indirect evaporative cooling system of the data center, and the dew point indirect evaporative cooling system can send the prepared cold air into the data center.
Leading dehumidification type data center dew point indirect evaporative cooling system, wherein: the device also comprises an air purification device which can be switched and communicated with the dew point indirect evaporative cooling system and the inlet end of the dehumidification device through valve control and is used for providing clean air.
leading dehumidification type data center dew point indirect evaporative cooling system, wherein: the dehumidification device consists of two adsorption beds which are used and prepared and are used alternately; when one of the adsorption beds is in the working state, the other adsorption bed is in the regeneration state.
Leading dehumidification type data center dew point indirect evaporative cooling system, wherein: the solar hot air device is also arranged and can heat air circulating in the solar hot air device, and the downstream of the solar hot air device is communicated to the dehumidifying device and can heat the two adsorption beds alternately so as to regenerate the adsorption beds alternately.
Leading dehumidification type data center dew point indirect evaporative cooling system, wherein: the upstream of the solar hot air device is communicated with a hot air outlet of the data center.
Leading dehumidification type data center dew point indirect evaporative cooling system, wherein: and a phase change heat storage device is also arranged between the solar hot air device and the dehumidification device.
Leading dehumidification type data center dew point indirect evaporative cooling system, wherein: the adsorption bed is also integrated with a microwave dehumidification device, and the adsorption material can be regenerated by utilizing the microwave oscillation principle.
A preposed dehumidification type data center dew point indirect evaporative cooling method adopts the preposed dehumidification type data center dew point indirect evaporative cooling system, and is characterized in that:
When the humidity of the ambient air is in a proper operation interval of the dew point indirect evaporative cooling device, the ambient air directly enters the dew point indirect evaporative cooling device, and the prepared cold air is sent to the data center;
When the humidity of the ambient air is outside the proper operation range of the dew point indirect evaporative cooling device, the ambient air is dehumidified by the dehumidifying device and then is sent to the dew point indirect evaporative cooling device, and the prepared cold air is sent to the data center.
The invention has the advantages that: a set of dehumidification system is arranged in the dew point indirect evaporative cooling system in front and used for drying outdoor air, so that the air entering the dew point indirect evaporative cooling system meets the requirement of air humidity for efficient operation.
Drawings
Fig. 1 is a schematic structural diagram of a front-mounted dehumidification type data center dew point indirect evaporative cooling system provided by the invention.
Description of reference numerals: valves 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11; an air cleaning device 21; a data center 22; a dew point indirect evaporative cooling system 23; an adsorbent bed 24; a solar hot air device 25; a cabinet 26; a hot air outlet 27; a phase change thermal storage device 28.
Detailed Description
Some specific embodiments of the invention will be described in detail below, by way of example and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.
as shown in fig. 1, the present invention provides a front-end dehumidification type data center dew point indirect evaporative cooling system and method, including:
The air purification device 21 is arranged at an upstream position of a dew point indirect evaporative cooling system 23 of the data center 22, is used for filtering particles in ambient air, is connected with the dew point indirect evaporative cooling system 23, and can provide clean air for the dew point indirect evaporative cooling system 23;
The inlet end of the dehumidifying device is communicated with the air purifying device 21, and the outlet end of the dehumidifying device is communicated with the dew point indirect evaporative cooling system 23, and the dehumidifying device has the functions of: when the humidity of the ambient air is too high, the moisture in the ambient air is adsorbed and removed, so that the humidity of the ambient air entering the dew point indirect evaporative cooling system 23 is reduced, and the energy-saving efficiency of the dew point indirect evaporative cooling system 23 is improved.
In the present invention, in order to maintain the continuous operation capability of the dehumidifying apparatus, the dehumidifying apparatus is composed of two identical adsorption beds 24, and the two adsorption beds 24 are used one by one and used alternately. When one of the adsorption beds 24 is in an operating state, i.e. the adsorbent is used to adsorb moisture in the ambient air, the other adsorption bed 24 is in a regeneration state, i.e. the moisture in the adsorbent is desorbed by heat energy, so that the adsorbent has the capacity of adsorbing moisture again.
In order to provide the heat for regeneration to the adsorption bed 24, the present invention has a solar hot air device 25, which can use a tool capable of absorbing solar radiation and converting the solar radiation into heat, such as a solar heat pipe or a black heat absorbing material, to heat the air flowing through the solar hot air device, and many of such products can be freely purchased and obtained in the market, and the detailed structure thereof is not described herein. The downstream of the solar hot air device 25 is communicated to the dehumidifier, and the two adsorption beds 24 can be heated alternately to be regenerated alternately.
In order to further improve the energy utilization, the present invention also utilizes the waste heat generated by the data center 22. After cold air generated by the dew point indirect evaporative cooling system 23 enters the data center 22, each cabinet 26 in the data center 22 is cooled and converted into hot air, and the upstream of the solar hot air device 25 is communicated with a hot air outlet 27 of the data center 22, so that waste heat generated by the data center 22 is effectively utilized, and an energy-saving effect is achieved.
A phase change heat storage device 28 is further disposed between the solar hot air device 25 and the dehumidifier, and the phase change heat storage device 28 can store the surplus heat when the temperature of the hot air output by the solar hot air device 25 is high (for example, when the sunlight is sufficient in the daytime), and release the stored heat when the temperature of the hot air output by the solar hot air device 25 is insufficient (for example, when the temperature of the hot air output by the solar hot air device 25 is insufficient in the night), so as to provide stable heat energy for the dehumidifier.
In order to cope with the extreme case of insufficient solar energy or excessive environmental humidity, a microwave dehumidifying device (not shown) is further integrated on the adsorption bed 24, and the microwave dehumidifying device can regenerate the adsorption material by using the microwave oscillation principle.
When the dew point indirect evaporative cooling device is used, as shown in fig. 1, when the ambient air humidity meets the suitable operation interval of the dew point indirect evaporative cooling device for a long time, the valves 9 and 10 are opened, the valves 1, 2 and 11 are closed, the ambient air is purified by the air purification device 21 and then enters the dew point indirect evaporative cooling device, and the prepared cold air is sent to the data center 22.
When the ambient air humidity does not meet the high-efficiency operation interval of the dew point indirect evaporative cooling device, the valves 9 and 10 are closed, the related valves of the dehumidifying device are opened and closed, the dehumidified air is sent to the dew point indirect evaporative cooling device, and the cold air is prepared and sent to the data center 22. The two adsorbent beds 24 of the adsorption system operate alternately, and for convenience of description, the a and B beds are referred to hereinafter. When the bed A is adsorbed, the bed B is regenerated at the same time, when the adsorption is saturated, the valve is automatically switched, and the functions of 2 adsorption beds 24 are exchanged, namely the bed A is regenerated and the bed B is adsorbed. The specific switching mode of the relevant valves of the dehumidifying device is as follows: assuming that the initial scene is adsorption of the bed A and regeneration of the bed B, the valves 1, 3, 6 and 8 are opened, the valves 2, 4, 5 and 7 are closed, the ambient air is purified by the air purification device 21 and then enters the bed A for dehumidification through the valve 1, and the dehumidified air is sent to the dew point indirect evaporative cooling device through the valve 3; meanwhile, hot air (called regeneration air) from the combination of solar energy and waste heat enters the B bed through the valve 6 to regenerate the adsorption bed 24, and the regeneration air carries moisture and is discharged to the outside. When the moisture absorption amount of the bed A is saturated, the valves 2, 4, 5 and 7 are opened, the valves 1, 3, 6 and 8 are closed, the ambient air enters the bed B for dehumidification through the valve 2 after being purified by the air purification device 21, and the dehumidified air is sent to the dew point indirect evaporative cooling device through the valve 4; meanwhile, hot air (called regeneration air) from the combination of solar energy and waste heat enters the A bed through the valve 5 to regenerate the adsorption bed 24, and the regeneration air carries moisture and is discharged to the outside. The operation is repeated in a circulating way.
the return air of the data center 22 has heat, when the return air is introduced into the solar hot air device 25, the temperature of the return air is further raised, and then the return air enters the phase change heat storage device 28, partial heat is stored by using the phase change energy storage technology, and then the hot air enters the dehumidification device as regeneration air to be regenerated.
In the invention, a set of dehumidification system is arranged in the dew point indirect evaporative cooling system 23 in front for drying outdoor air, so that the air entering the dew point indirect evaporative cooling system 23 meets the requirement of air humidity for efficient operation.
The data center 22 needs to continuously operate all the year round, the IT equipment can continuously release heat, and the waste heat resource is rich, so that the IT equipment is used as one of the sources of desorption heat sources; meanwhile, due to the design and construction characteristics of the data center 22, the indoor air has low and stable relative humidity, and the indoor air is very suitable for carrying away moisture when the dehumidification system is used for desorption. Meanwhile, most areas in China have abundant solar energy resources, and the solar energy is used as renewable energy, and heat generated by solar energy is used for desorbing heat sources, so that the solar energy heat-source desorption device is an important means for improving the energy utilization rate and reducing the energy consumption. Therefore, the solar energy and the waste heat of the data center 22 are combined together to be used as a desorption heat source, and then the phase change energy storage technology is added, so that the energy utilization efficiency can be improved.
Claims (8)
1. A front-end dehumidification type data center dew point indirect evaporative cooling system, comprising:
And the inlet end of the dehumidifying device is communicated with ambient air, the outlet end of the dehumidifying device is communicated with a dew point indirect evaporative cooling system of the data center, and the dew point indirect evaporative cooling system can send the prepared cold air into the data center.
2. The front-end dehumidification type data center dew point indirect evaporative cooling system of claim 1, wherein: the device also comprises an air purification device which can be switched and communicated with the dew point indirect evaporative cooling system and the inlet end of the dehumidification device through valve control and is used for providing clean air.
3. The front-end dehumidification type data center dew point indirect evaporative cooling system of claim 1, wherein: the dehumidification device consists of two adsorption beds which are used and prepared and are used alternately; when one of the adsorption beds is in the working state, the other adsorption bed is in the regeneration state.
4. The front mounted dehumidification-type data center dew point indirect evaporative cooling system of claim 3, wherein: the solar hot air device is also arranged and can heat air circulating in the solar hot air device, and the downstream of the solar hot air device is communicated to the dehumidifying device and can heat the two adsorption beds alternately so as to regenerate the adsorption beds alternately.
5. The front mounted dehumidification-type data center dew point indirect evaporative cooling system of claim 4, wherein: the upstream of the solar hot air device is communicated with a hot air outlet of the data center.
6. The front mounted dehumidification-type data center dew point indirect evaporative cooling system of claim 5, wherein: and a phase change heat storage device is also arranged between the solar hot air device and the dehumidification device.
7. The front mounted dehumidification-type data center dew point indirect evaporative cooling system of claim 4, wherein: the adsorption bed is also integrated with a microwave dehumidification device, and the adsorption material can be regenerated by utilizing the microwave oscillation principle.
8. A front dehumidification type data center dew point indirect evaporative cooling method, which adopts the front dehumidification type data center dew point indirect evaporative cooling system as claimed in any one of claims 1 to 7, and is characterized in that:
When the humidity of the ambient air is in a proper operation interval of the dew point indirect evaporative cooling device, the ambient air directly enters the dew point indirect evaporative cooling device, and the prepared cold air is sent to the data center;
When the humidity of the ambient air is outside the efficient operation range of the dew point indirect evaporative cooling device, the ambient air is dehumidified by the dehumidifying device and then is sent to the dew point indirect evaporative cooling device, and the prepared cold air is sent to the data center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910823844.9A CN110553327A (en) | 2019-09-02 | 2019-09-02 | Front-mounted dehumidification type data center dew point indirect evaporative cooling system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910823844.9A CN110553327A (en) | 2019-09-02 | 2019-09-02 | Front-mounted dehumidification type data center dew point indirect evaporative cooling system and method |
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| CN110553327A true CN110553327A (en) | 2019-12-10 |
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| CN201910823844.9A Pending CN110553327A (en) | 2019-09-02 | 2019-09-02 | Front-mounted dehumidification type data center dew point indirect evaporative cooling system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264662A (en) * | 2022-06-21 | 2022-11-01 | 同济大学 | Dehumidification air-conditioning system based on temperature-sensitive gel and indirect evaporative cooling and application method |
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| US20120168119A1 (en) * | 2010-12-30 | 2012-07-05 | Munters Corporation | Ventilation device for use in systems and methods for removing heat from enclosed spaces with high internal heat generation |
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| CN115264662A (en) * | 2022-06-21 | 2022-11-01 | 同济大学 | Dehumidification air-conditioning system based on temperature-sensitive gel and indirect evaporative cooling and application method |
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Application publication date: 20191210 |
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