RU181944U1 - INSTALLATION FOR IMMERSION LIQUID SINGLE-PHASE COOLING DEVICES FOR Cryptocurrency Mining - Google Patents

Abstract

Installation for immersion liquid single-phase cooling of cryptocurrency mining devices. A useful model relates to installations including electronic devices used for mining (mining) of cryptocurrency. Mining farms assembled from video cameras or asics can be used as electronic devices for mining cryptocurrency. The installation for immersion liquid single-phase cooling of cryptocurrency mining devices comprises a sealed tank with cryptocurrency mining devices installed in it, filled with cooling liquid and equipped with inlet and outlet pipes communicating via a pipeline with a pump and a heat exchanger, while using a hydrophobic inert silicone as a cooling liquid liquid with a kinematic viscosity of 5-200 mm / s at a temperature of 25 ° C with the addition of an antistatic additive. The utility model provides maximum heat transfer with the lowest energy consumption.

Description

The utility model relates to installations including electronic devices used for mining (mining) cryptocurrencies. Mining farms collected from video cameras or asics can be used as electronic devices for mining cryptocurrency.

Currently, air cooling is most often used to remove heat from installations that include electronic devices for cryptocurrency mining.

In this case, a contradiction arises due to the fact that air is a heat insulator. The thermal conductivity of air is 0.022 W / m K, and the heat capacity of 1 kJ / kg K for comparison with water is 0.6 W / m K, and 4.2 kJ / kg.

Thus, the thermal conductivity of water is 27.3 times higher, and the heat capacity is 4.2 times higher, respectively, we find that water is 115 times more efficient as a heat carrier. Since the heat capacity is calculated per kilogram, and if you take into account the air density of 1.3 kg \ m3, it turns out that 1 liter of water will replace 88,550 liters of air. For example, take the mine with the consumed email. 100 kW:

For air cooling of the premises in the summer, 30,000 cubic meters are required. meters of air per hour. This is to make the equipment work at maximum thermal conditions. At the same time, the room will still be like in equatorial Africa. For comparison with water cooling, for heat removal from an electric mine. 100 kW power. You will need to connect a half inch central water supply pipe. This connection is made for budget housing.

Let us return to air cooling, ventilation equipment with a flow rate of 30,000 m3 / hour is not a cheap option, but this is not the only problem, it is necessary to achieve a relatively laminar flow, which only high-level specialists can do. Just fans provide turbulence.

The classic system of forced ventilation with heating is arranged as follows. It includes the following equipment:

1. Fan - provides air flow from the street

2. Electric or water cooler - for cooling street air to a predetermined temperature 3. Filtration system - designed to clean the air from dust, dirt, insects, etc. A very important parameter for the equipment to work in a dust-free room.

4. Damper with electric drive - to open / close the channel when turning on / off the ventilation.

5. Automation and control system - designed to control and regulate air flow and temperature.

6. Duct system - supply air is transported through them and distributed to the right places for maximum efficient operation. Effective ventilation and cooling system of mining farms:

For the most efficient and economical cooling system for mining, it is necessary for the chilled air flows to enter the equipment placement area at the entrance, and removal from the zones of the hottest air accumulation.

The disadvantages of air cooling systems include overheating of equipment and, as a result, operation of the equipment at its extreme values, which leads to frequent shutdown, untimely wear, reduced productivity and subsequently equipment failure. If the air cooler is not installed correctly, it is possible to perform subcooling - which leads to the possibility of condensation and also equipment failure.

In connection with the noted drawbacks, liquid cooling is more progressive. The prior art device for single-phase immersion cooling (patent WO 2014165824, IPC Н02Р 11/00, published 09.10.2014), made with the possibility of partial immersion of electronic equipment in a dielectric fluid to remove heat and install this equipment vertically. The device comprises a frame, a container mounted on the frame. In the container is a dielectric fluid. Electronic equipment is cooled by partially immersing it in a dielectric fluid. Heated fluid is pumped through an external heat exchanger.

The prior art also known a device for single-phase immersion cooling (patent US 2015013960, IPC H05K 7/20, published January 15, 2015), made with the possibility of complete immersion of electronic equipment in a dielectric fluid to remove heat and install this equipment vertically. The device contains a container in which there is a dielectric fluid. Electronic equipment is cooled by partially immersing it in a dielectric fluid. Heated fluid is pumped through an external heat exchanger. Heat from the heat exchanger circuit can either be used or dissipated.

The prior art device for single-phase immersion cooling (patent US 2014124174, IPC F28D 15/00, published 08.05.2014), made with the possibility of full or partial immersion of electronic equipment in a dielectric fluid to remove heat. The device contains a separate capacity for each motherboard in which the dielectric fluid is located. Tanks are located in a standard rack horizontally. Capacities are connected between the special one so that the pump simultaneously pumps dielectric fluid through all the containers. The dielectric liquid enters the heat-generating components and removes heat, while the liquid can partially evaporate. The circulation takes place using a pump installed in a separate rack. The condensation of the heat-transfer fluid vapor occurs on the same heat exchanger on which the dielectric fluid is cooled, also located in a separate rack

The disadvantages of the known device are: the low density of the installation of electronic components, the inability to provide hot replacement of faulty units of equipment and operation in difficult conditions, as well as the high level of energy required.

The technical problem is the elimination of the noted drawbacks and the creation of a cooling unit for cryptocurrency mining devices, which ensures maximum heat transfer with the lowest energy consumption and the creation of an effective environmentally friendly cooling system.

The technical result of the utility model is to ensure maximum heat transfer with the lowest energy consumption.

The installation provides silent operation, ensuring the functioning of the system in difficult conditions of increased dust content, as well as in the field, increasing fire and environmental safety through the use of an inert liquid with the addition of an antistatic additive, which ensures maximum heat transfer with the lowest energy consumption.

The technical problem is solved, and the technical result is achieved by the fact that the installation for immersion liquid single-phase cooling of cryptocurrency mining devices contains a sealed tank with cryptocurrency mining devices installed in it, filled with coolant, and equipped with inlet and outlet pipes communicating with the pump and a heat exchanger, while a hydrophobic inert silicone fluid with kinematic elm is used as a coolant awn 5-200 mm ² / s at 25 ° C with the addition of antistatic additives Sigbol in an amount of 0.02-0.05% by volume.

Each of the cryptocurrency mining devices located in the coolant reservoir is configured to connect to the server via an Ethernet network.

In FIG. 1 shows the proposed device, where 1 is a sealed tank, 2 - sectors of the internal space of the tank 1, exhaust pipe 3. inlet pipe 8.

In FIG. 2 shows the proposed device, where 3 is the outlet pipe of the coolant, the shutoff valve 4 is connected via a pipeline to the circulation pump 5, the heat exchanger 6, which on the other hand is connected via a pipeline through the second shutoff valve 7 to the inlet pipe 8.

The inner space of the sealed reservoir 1 by the inner walls divides the inner space into sectors 2, in each of which there is an electronic device for cryptocurrency mining (not shown), which is connected to the electric network. The tank is filled with coolant, which is used hydrophobic inert silicone fluid with a kinematic viscosity of 5-200 mm ² / s at 25 ° C with the addition of an antistatic additive. The viscosity range is selected from the condition of optimal thermal conductivity during operation of the installation in a temperature regime of 40-50 ° C. As an additive, for example, additive SN 2547 Sigbol (TU 38.101741-78) in an amount of 0.02-0.05 volume% can be used, which is associated with the need to relieve electrostatic stress caused by intermolecular dielectric friction in a liquid.

Silicone fluids are polydimethylsiloxanes. Silicone fluid is characterized by the following properties:

1. high thermal and thermo-oxidative resistance and excellent resistance to temperature from -60 to 300 ° C;

2. A slight change in viscosity with a significant change in temperature;

3. resistance to electromagnetic particles, as well as UV, alpha, beta and gamma radiation;

4. low surface tension, high fluidity;

5. good hydrophobicity (water-repellent properties);

6. good dielectric properties;

7. chemical inertness;

8. low freezing temperature;

9. high temperature flash;

Each of the devices located in the coolant reservoir is configured to connect to the server via an Ethernet network.

The outlet pipe 3 of the coolant is located above the level of the walls of the sectors and through a shut-off valve 4 is connected via a pipe to a circulation pump 5 and a heat exchanger 6, which on the other hand is connected by a pipe through a second shut-off valve 7 to the inlet pipe 8.

Installation works as follows. The temperature of the coolant hydrophobic inert silicone fluid in the sealed tank 1 is maintained in the operating mode of 40-50 ° C. Coolant is circulated through the exhaust pipe 3, a pipeline with a circulation pump 5 and a heat exchanger 6, regulating the flow of cooling water through the heat exchanger 6. At the outlet of the heat exchanger and the direction through the inlet pipe 8 to the sealed tank 1, the temperature of the cooling dielectric fluid is 20-25 ° C.

The proposed installation can provide heat removal of the order of 82, 5 kW, which requires 4 m ^{3 of} water per hour.

Claims (2)

1. Installation for immersion liquid single-phase cooling of cryptocurrency mining devices, comprising a sealed tank with cryptocurrency mining devices installed therein, filled with coolant, and equipped with inlet and outlet pipes communicating via a pipeline with a pump and a heat exchanger, characterized in that as coolant used inert hydrophobic silicone fluid has a kinematic viscosity of 5-200 mm ² / s at 25 ° C with the addition of anti-static cal additives in an amount of about 0.02-0.05. % 2. Installation for immersion liquid single-phase cooling according to claim 1, characterized in that each of the cryptocurrency mining devices located in the coolant reservoir is configured to connect to the server via an Ethernet network.

Images