Practical methods for noise reduction and cooling of ASIC miners

ASIC miner noise not only affects sleep, but also affects physical and mental health, and affects the relationship between neighbors and families. The noise produced by the GPU miner is not bad. The noise produced by the ASIC miner can reach more than 80 decibels. Most of the miners such as Ebit E9, Antminer S9, A3, and D3 use a 120mm cooling fan for heat dissipation, and the speed of the fan can reach Above 6000 RPM. The rapid cutting of the air by the fan blades produces a lot of noise. Take the Antminer S9 as an example: the ambient temperature is greater than 25 degrees, and the noise can reach more than 95 decibels. In the silent night, the noise of the miner can be heard clearly at a distance of 300 meters without being blocked, and it can also be transmitted to the ears of neighbors when the door is closed in the room. In order to reduce the noise of miner rigs, the vast number of miners exerted their superhuman wisdom to produce various noise reduction equipment. The following are more typical noise reduction schemes:

Straight-through noise reduction box

The straight-through noise reduction box is the earliest noise reduction scheme, intuitive and straightforward, and can reduce the noise by more than 20 decibels;

straight-through noise reduction box 

Advantages: simple structure, simple production process;

Disadvantages: large area, low fire safety factor and the miner's control board are prone to overheating in a confined space.

Labyrinth noise reduction box

The labyrinth-type noise reduction box has the best noise reduction effect among all noise reduction schemes, and the sound needs to be turned around several times to come out! So it’s okay to put the miner in the bedroom to sleep. But it weighs more than 80 kilograms, covers an area of more than 1 square, and is difficult and costly to produce.

labyrinth noise reduction box 

Advantages: good mute effect;

Disadvantages: large area, low fire safety factor, high cost, the high temperature displayed by miners.

Water-cooled, oil-cooled noise reducer

Using water or oil as the heat carrier, the heat generated by the hash board chips flows in a fixed pipe, which is the basic principle of this scheme. However, the utilization rate of water-cooled and oil-cooling noise reduction schemes is not high. Due to the influence of the law of conservation of energy, it is still necessary to perform air-cooled fan heating on the water and oil heat carriers. The volume of the air-cooled exhaust required varies according to the miner's power. Generally, miners larger than 1000W need more than 12 fans with a speed of 3000 rpm.

The Antminer S9 Hydro is one of the Antminers that uses water cooling to reduce temperature and noise.

Antminer S9 Hydro 

Advantages: The air-cooled exhaust can be placed outdoors to isolate noise;

Disadvantages: complex production, damage to the miner's warranty, high cost, and finally air-cooled heat dissipation.

Wind tunnel noise reducer

The structure of the wind tunnel noise reducer is straightforward. A fan speed simulator is used to keep the main board working, and then a negative pressure fan with an air volume of more than 650 square meters can be connected. The wind tunnel type has a relatively significant noise reduction effect and a small footprint. A single wind tunnel cannot be used for miners larger than 1600W. It is suitable for the Antminer series, but it requires a large-size wind tunnel for the Whatsmienr series, or the double wind tunnel pushes the wind.

wind tunnel noise reducer 

Advantages: easy installation, noticeable noise reduction effect, no damage to the miner's warranty, low temperature of the miner, stable work;

Disadvantages: Cannot be used for miners with power greater than 1600W.

Immersion type water cooling, oil cooling

Put the miner in water or oil and heat it with a circulating fan. The production difficulty is low, and the effect is ideal. However, immersion oil cooling has tremendous fire pressure; the consequences could be disastrous. The immersion-type water cooling has no fire risk. Still, the requirements for equipment are relatively high, and a deionizer is required to continuously remove ions in the water to keep the water non-conductive.

water cooling 

Advantages: good noise reduction effect, does not destroy the warranty;

Disadvantages: oil-cooling has a high risk of fire prevention and high cost of water-cooling.

ANC Active Noise Canceller

The ANC active noise reduction technology is a little overkill for miners' noise reduction. The realization principle is that 16 microphones are placed around the miners to collect the noise. The waveform opposite the noise is calculated through single-chip computer filtering to cancel the noise. At present, the ANC active noise reducer has more significant shortcomings. There must be a distance greater than 1.5 meters between each device. Otherwise, they will affect each other. The complexity of 16-channel acquisition, calculation, and energy conversion has reached an unimaginable level. If this technology is used on more noisy occasions, it will achieve more significant results.

Advantages: noticeable noise reduction effect;

Disadvantages: large area and high cost.

Miner Mute machine

The most troublesome thing in the home environment is the high pitch produced by the high-speed rotating cooling fan blades. The cargo volume provides the air needed to cool the processor to work safely and minimize the noise level. This product is suitable for cryptocurrency mining in urban areas. You only need to remove the miner’s original fan to use this product, with high heat dissipation efficiency and low noise.

miner mute machine 

Advantages: The miners are silent, effectively preventing the operation of big fans such as the Antminer.

Antminer silencer

The Antminer Silencer adopts pure copper wire, which has the advantages of high wind pressure, low noise, small size, large air volume (150 watts), quietness and durability, etc. There are three high, medium and low speeds, generally high speed. Please see the motor when connecting. Please do not disconnect it, and if it is disconnected, the motor will be burnt out. This integrated silent machine does not have a plug. The adjustable suction interface is suitable for most T17 series, Innosilicon series, Avalon 1066 and other integrated miners, input voltage: 220V, motor power consumption: 150W.

Antminer silencer 

Advantages: wide application range, low noise, large air volume.

 

The content and pictures of this article are from the Internet, compiled and edited by ZEUS MINING.


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