CN212901798U

CN212901798U - Heat pipe type indirect evaporation natural cooling system of data center

Info

Publication number: CN212901798U
Application number: CN202021045323.XU
Authority: CN
Inventors: 肖峰
Original assignee: Jietong Wisdom Technology Co ltd; Tibet Ningsuan Information Technology Co ltd; Tibet Ningsuan Technology Group Co ltd
Current assignee: Jietong Wisdom Technology Co ltd; Tibet Ningsuan Information Technology Co ltd; Tibet Ningsuan Technology Group Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-04-06
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a can realize indirect evaporation data center cooling system of heat pipe formula of year-round natural cooling for data center relates to heat energy technical field, include: the device such as multistage heat pipe evaporation zone, multistage heat pipe condensation segment, side fan, secondary side fan, spray set, filter screen, controller, sensor once can realize the complete natural cooling throughout the year, does not need mechanical refrigeration to it is extravagant to reduce the energy, improves energy utilization and rates, and is energy-concerving and environment-protective.

Description

Heat pipe type indirect evaporation natural cooling system of data center

Technical Field

The utility model relates to a heat energy technical field, concretely relates to an indirect evaporation data center cooling system and control mode thereof that is used for data center's realization year round natural cooling's heat pipe formula relates to heat energy technical field.

Background

With the rapid development of cloud computing and big data technology, the data center is larger and larger in scale, and the power consumption is higher and higher. Research shows that the energy consumption of the data center accounts for about 2% of the national electricity consumption and is in a rising trend. In addition, research also shows that the energy consumption of the air conditioning system accounts for about 70% of the energy consumption of the data center, except for IT equipment, and the demand for reducing the energy consumption of the air conditioning system of the data center is very urgent.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can realize complete natural cooling's indirect evaporative cooling system and control and working method thereof, can realize not using mechanical refrigeration throughout the year in the region that the weather suits to it is extravagant to reduce the energy, improves energy utilization and rates, and is energy-concerving and environment-protective.

And simultaneously, the utility model also provides a control method according to outdoor meteorological condition subregion to expand data center air conditioner natural cooling's working range by a wide margin.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

the utility model provides a data center heat pipe formula indirect evaporation natural cooling system, includes air conditioning unit 20 and computer lab module 30, air conditioning unit 20 and computer lab module 30 pass through tuber pipe 40 and connect its characterized in that: the machine room module 30 comprises an IT equipment cabinet 1, a cold channel 2, a hot channel 3 and a return air suspended ceiling layer 4; the air conditioning unit 20 comprises a group of multistage heat pipes 6 and a spraying device; the spraying device is arranged above the multistage heat pipe condensation section 61; indoor air enters the cold channel 2 through the primary side fan 7, the IT equipment in the IT equipment cabinet 1 generates heat to heat the air, the IT equipment exhausts air to the hot channel 3, the air in the hot channel 3 is sucked into the air conditioning unit 20 through the return air ceiling layer 4, and enters the multistage heat pipe evaporation section 62 after being filtered by the return air filter screen 8, and then enters the machine room module cold channel 2 after heat exchange is finished, so that the whole primary side air circulation is finished; the air on the secondary side enters the multistage heat pipe condensation section 61 after being sucked from the outside, and is sprayed by the spraying device; in the multistage heat pipe condensation section 61, the heat pipe brings the heat absorbed by the primary side to the secondary side air and water, and heat exchange is carried out on the surface of the multistage heat pipe 6; after heat exchange, secondary side air is discharged outdoors through a secondary side fan 9; the system further comprises a controller 5, wherein the controller 5 is in communication connection with the air conditioning unit 20 and the machine room module 30, and the system is controlled to operate.

Further, in the above technical solution, the primary side fan 7 may be disposed before or after the return air filter screen 8; the secondary side fan 9 may be disposed before or after the multi-stage heat pipe 6.

Further, in the above technical scheme, the spraying device includes a spraying or shower head 10, a water pump 11, and a water collecting tray 12, the water pump 11 is connected with the controller 5 in a communication manner, and the controller controls the water pump to operate.

Further, in the above technical scheme, the spraying device further comprises a flow equalizing and water distributing device, which is arranged between the spraying or spraying head 10 and the multi-stage heat pipe 6.

Further, in the above technical solution, 1 temperature and humidity sensor 13 is disposed in the air conditioning unit according to the air path, and is disposed before the secondary air enters the multi-stage heat pipe condensation section; 1 temperature sensor is arranged in front of the secondary side air exhaust chamber; a differential pressure sensor is arranged on the inner side and the outer side of the filter screen; and the sensors are in communication connection with the controller and used for acquiring the operating parameters of the air conditioning unit.

Furthermore, in the above technical solution, the multistage heat pipe is a gravity separation heat pipe with gas-liquid pipe separation, or an integrated heat pipe with a liquid absorption core; the surface of each stage of heat pipe is provided with heat exchange strengthening measures.

Furthermore, in the above technical scheme, a plurality of air conditioning units are in a group, installed on the side surface or the top surface of the machine room module, and connected with the machine room module through the air pipes.

The utility model discloses following beneficial effect has:

the system can completely utilize outdoor fresh air to indirectly evaporate to cool the data center in certain regions, expands the completely natural cooling range, improves the cooling effect of the data center, improves the energy utilization rate, reduces the energy consumption of the data center, saves the cost, accords with the environmental protection and energy saving concept, and reduces the environmental pressure.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a psychrometric chart of the present invention defining the range of air delivery parameters for an air conditioning unit;

FIG. 3 is a psychrometric chart of the outdoor temperature, humidity and weather conditions defining the range of the present invention;

FIG. 4 is a schematic diagram of embodiment 1 of the present invention;

fig. 5 is a schematic diagram of embodiment 2 of the present invention.

Detailed Description

As shown in fig. 1, the indirect evaporative cooling system capable of achieving complete natural cooling operates in the following manner: air processed by the air conditioning unit 20 enters the data center cold channel 2, the IT equipment in the IT equipment cabinet 1 generates heat to heat the air, the IT equipment exhausts air to the hot channel 3, the air in the hot channel 3 is sucked into the air conditioning unit 20 through the return air ceiling layer 4, and enters the multistage heat pipe evaporation section 62 after being filtered by the return air filter screen 8, and then enters the machine room module cold channel 2 after heat exchange is completed, so that the whole primary side air circulation is completed.

The primary side fan 7 in the air conditioning unit can be arranged in front of the return air filter screen 8 or behind the return air filter screen 8.

The utility model discloses the secondary side air is by outdoor suction back, gets into multistage heat pipe condensation segment 61, and its upper portion has spray set's shower head 10, does to have the water distribution device that flow equalizes etc..

In the multistage heat pipe condensation section 61, the heat pipe takes the heat absorbed at the primary side to the secondary air and water, and heat exchange is performed on the surface of the heat pipe. And after the secondary side air heat exchange is finished, the secondary side air is discharged out of the unit through a secondary side fan 9.

The utility model discloses an one of the key characteristics lies in adopting multistage heat pipe, and each level heat pipe surface can have the heat transfer to strengthen the measure. The advantage of a multi-stage heat pipe over a single-stage heat pipe is that the wet bulb efficiency between the primary and secondary side can be improved. The multistage heat pipe can be a gravity separation heat pipe with gas-liquid pipe separation or an integrated heat pipe with a liquid absorption core.

The secondary side fan 9 may be behind the multi-stage heat pipes 6 or in front of the multi-stage heat pipes 6.

The spraying device is composed of a spraying or shower head, a water pump, a water collecting tray and the like.

Referring to fig. 2, two ranges are defined for the indoor air supply parameters of the air conditioning system of the data center for the IT equipment, wherein one range is a recommended range, and the other range is an allowable range, and the recommended range is smaller than or equal to the allowable range.

As shown in fig. 3, all outdoor temperature, humidity and weather conditions can be divided into different areas according to different recommended ranges and allowable ranges.

According to the utility model discloses the data center that defines is totally natural cooling, can divide all outdoor humiture meteorological conditions into three regions such as ABC, and wherein C is for making the data center work in the region of recommended scope, and A is for making the data center work in the region outside the allowed range, and other are for making the data center work in the region between recommended scope and allowed range.

Complete natural cooling, the hou mian based on data center place regional meteorological parameter distributes and satisfies following condition:

the number of hours per year for the a area where the outdoor weather conditions are outside the allowable range is less than a certain value, and the number of hours per year for the B area where the outdoor weather conditions are between the recommended range and the allowable range is less than a certain value.

In the psychrometric chart, the determination method of each region is as follows:

the A area is a range in which the air enthalpy value determined by an isenthalpic line and an enthalpy diagram boundary determined by the temperature T0 determined according to the following formula and the intersection point of 100% equal relative humidity lines is higher than the isenthalpic line, wherein the temperature upper limit TH of the allowable range, the return air temperature difference delta T and the unit wet bulb heat exchange efficiency N are determined according to the following formula.

T0＝TH+ΔT*(1-N^-1)

The C area is the temperature upper limit TM of the recommended range, the return air temperature difference delta T and the unit wet bulb heat exchange efficiency N, and the air enthalpy value determined by the equal enthalpy line determined by the intersection point of the temperature T1 and the 100% equal relative humidity line and the enthalpy value determined by the enthalpy diagram boundary is lower than the equal enthalpy line range.

T1＝TM+ΔT*(1-N^-1)

The rest is B area.

In the system, a controller, a T/H temperature and humidity sensor, a differential pressure sensor and a temperature sensor are further arranged to control the operation of the unit. Specifically, according to the air path, 1 temperature and humidity sensor 13 is arranged in the air conditioning unit and is arranged before secondary air enters the multistage heat pipe condensation section; 1 temperature sensor is arranged in front of the secondary side air exhaust chamber; a differential pressure sensor is arranged on the inner side and the outer side of the filter screen; temperature sensors are respectively arranged in the cold channel and the hot channel; and the sensors are in communication connection with the controller and used for acquiring the operating parameters of the air conditioning unit. The rotating speed of the fan is controlled according to the temperature difference of the returned air or the parameters of the return air, the air supply temperature, the air supply pressure and the like. Particularly, in a C area, the operation of a secondary side fan is controlled by taking the stable supply air temperature or return air temperature as a control target; in the AB area, the secondary fan runs at full speed; the primary side fan is used for matching the output cold quantity of the unit with the load, and a control mode of keeping the return air temperature stable or the return air temperature difference stable is adopted.

As shown in fig. 4 and 5, the air conditioning unit 20 of the present invention may be a group of a plurality of air conditioning units, which are installed on the side surface or the top surface of the machine room module 30 and connected to the machine room module 30 through the air duct 40.

Claims

1. The utility model provides a data center heat pipe formula indirect evaporation natural cooling system, includes air conditioning unit (20) and computer lab module (30), air conditioning unit (20) and computer lab module (30) are connected through tuber pipe (40), its characterized in that: the machine room module (30) comprises an IT equipment cabinet (1), a cold channel (2), a hot channel (3) and a return air ceiling layer (4); the air conditioning unit (20) comprises a group of multistage heat pipes (6) and a spraying device; the spraying device is arranged above the multistage heat pipe condensation section (61);

indoor air enters the cold channel (2) through the primary side fan (7), the IT equipment in the IT equipment cabinet (1) generates heat to heat the air, the IT equipment exhausts air to the hot channel (3), the air in the hot channel (3) is sucked into the air conditioning unit (20) through the return air ceiling layer (4), and enters the multistage heat pipe evaporation section (62) after being filtered by the return air filter screen (8), and then enters the machine room module cold channel (2) after heat exchange is finished, so that the whole primary side air circulation is finished;

secondary side air is sucked from the outside and then enters a multi-stage heat pipe condensation section (61), and the spraying device sprays; in the multistage heat pipe condensation section (61), the heat pipe brings the heat absorbed by the primary side to the secondary side air and water, and the heat exchange is carried out on the surface of the multistage heat pipe (6); after heat exchange, secondary side air is discharged outdoors through a secondary side fan (9);

the system further comprises a controller (5), wherein the controller (5) is in communication connection with the air conditioning unit (20) and the machine room module (30), and the system is controlled to operate.

2. The heat pipe type indirect evaporative natural cooling system of the data center as claimed in claim 1, wherein: the primary side fan (7) is arranged in front of or behind the return air filter screen (8); the secondary side fan (9) is arranged in front of or behind the multi-stage heat pipe (6).

3. The heat pipe type indirect evaporative natural cooling system of the data center as claimed in claim 1, wherein: the spraying device comprises a spraying or shower head (10), a water pump (11) and a water collecting tray (12), wherein the water pump (11) is in communication connection with a controller (5), and the controller controls the water pump to operate.

4. The heat pipe type indirect evaporative natural cooling system of claim 3, wherein: the spraying device also comprises a flow equalizing and water distributing device which is arranged between the spraying or spraying head (10) and the multi-stage heat pipes (6).

5. The heat pipe type indirect evaporative natural cooling system of the data center as claimed in claim 1, wherein: according to the air path, 1 temperature and humidity sensor (13) is arranged in the air conditioning unit and is arranged before secondary air enters the multistage heat pipe condensation section; 1 temperature sensor is arranged in front of the secondary side air exhaust chamber; a differential pressure sensor is arranged on the inner side and the outer side of the filter screen; and the sensors are in communication connection with the controller and used for acquiring the operating parameters of the air conditioning unit.

6. The heat pipe type indirect evaporative natural cooling system of the data center as claimed in claim 1, wherein: the multistage heat pipe is a gravity type separation heat pipe with gas-liquid pipe separation or an integrated heat pipe with a liquid absorption core; the surface of each stage of heat pipe is provided with a heat exchange strengthening structure.

7. The heat pipe type indirect evaporative natural cooling system of the data center as claimed in claim 1, wherein: a plurality of air conditioning units are in a group, are installed on the side surface or the top surface of the machine room module and are connected with the machine room module through air pipes.