Turnkey mining-container fabricators?

[BambooSynergy]

Hey everyone,

I’m looking for some engineering feedback on ruggedized, off-grid ASIC deployments.
My team is scaling out a global infrastructure project (Bamboo Synergy Technology). We manufacture skid-mounted, continuous biomass pyrolysis reactors (the BambooCore B500).
We deploy these units in highly remote, non-arable mountain terrains across the tropics to process massive amounts of bamboo into biochar for carbon sequestration and biochar terraforming.
The byproduct of this process is continuous, high-volume syngas. Each decentralized B500 node generates a steady 0.5 MW of continuous baseload power.

Because a large number of the units are deployed deep off-grid (often airlifted into terrain where running transmission lines is financially impossible), we are sitting on massive amounts of stranded, 100% renewable energy.
One of the most elegant solutions to monetize this power without building grid infrastructure is with containerized Bitcoin mining rigs directly at the B500 nodes.

My questions for the heavy-duty miners here:

• For a steady 0.5 MW baseload, what is the most robust setup with the lowest Capex (used units ok)? We estimate about about 20% for cooling.
• Has anyone here run containerized immersion-cooling setups in high-humidity/tropical environments?
• Any recommendations for turnkey mining-container fabricators who build specifically for extreme off-grid modularity?

I appreciate any insights.

[philipma1957]

Interesting question.

So think 400kwatt not 500.

Rugged immersion setups would be very niche.

But 100 air cooled s19s are cheap maybe 40k

they would do 10ph which is 300 dollars a day so in 150 days you have 45k.

the s19s would be fairly disposable since they are cheap.

Immersion is a costly setup.  You need good fluids which cost and large tanks which cost.

You need to watch the pumps.  When a pump goes a tank will over heat really fast.

You could lose a lot of miners fast.


https://www.ebay.com/itm/227160694575?


you should contact the seller above as he does have a lot of equipment for immersion.


you could kick over ideas with him.

[FP91G]

If you have free electricity, it's easier to use air miners. You need speed and ease of maintenance, not energy efficiency. I'd start with air cooling.

Why use containers if you can build a cheap hangar and mine? Containers are necessary if you move frequently or if there are risks involved.

[BambooSynergy]

Excellent! So used S19s in a small and well ventilated hollow block building would work? Just filtered air and no dehumidification? Anybody doing that already somewhere?

[FP91G]

Excellent! So used S19s in a small and well ventilated hollow block building would work? Just filtered air and no dehumidification? Anybody doing that already somewhere?

You need to experiment; I don't know how high your humidity is. For example, when I started mining in a humid room, I dried it out first. It's important to prevent water from dripping from the ceiling. Later, the equipment worked perfectly with open windows for years, while the humidity outside can reach 80%.
If you don't have condensation, then in theory, ASICs can operate with humidity up to 90%.

[philipma1957]

Excellent! So used S19s in a small and well ventilated hollow block building would work? Just filtered air and no dehumidification? Anybody doing that already somewhere?

Forum member mikeywith has mined in Asian high humid spots.

I will send him a pm to read this thread.

I asked him to read this thread as he did a lot of mining in Malaysia which is humid.


I gave you a merit to help get you started keep posting.

[BambooSynergy]

We are starting out in the Philippines with a few facilities across the archipelago. During the dry season, we don't have much concern, only the rainy season with high humidity seems critical. We have been in contact with the team from Mara Inc., they are also always looking for alternative mining locations, but I think they only operate the fancy new miners.

Excellent! So used S19s in a small and well ventilated hollow block building would work? Just filtered air and no dehumidification? Anybody doing that already somewhere?

You need to experiment; I don't know how high your humidity is. For example, when I started mining in a humid room, I dried it out first. It's important to prevent water from dripping from the ceiling. Later, the equipment worked perfectly with open windows for years, while the humidity outside can reach 80%.
If you don't have condensation, then in theory, ASICs can operate with humidity up to 90%.

[mikeywith]

@Phil, sorry, I just saw your message.

@OP, you can't dehumidify the massive volume of air you're going to be pulling from outside, so don't even go that route.

Just run your miners and they will be fine regardless of the humidity outside. You have to understand that what matters here is relative humidity, not absolute humidity. Your mining farm will be hotter than the outside, and every 1°C increase will translate to roughly a 3–4% drop in RH.

If the outside temperature is 20°C with 80% RH, your farm will easily be around 30°C, which brings RH down to roughly 40–50%(perfect for your miners).

With that said, you must be extra careful about these points:

1. Air intake (grill, window, or whatever you use) must be placed at a safe distance so it doesn't pull rain directly toward the miners. It shouldn't be exposed to rain, so you'll need to build some kind of shade or cover around the intake so rain can't enter directly.

2. Your firmware MUST keep generating heat even if there is no internet connection or pool connection. Many custom firmware versions stop hashing to save energy, but that killed dozens of gears. Remember: if your farm becomes as cold as the outside while pushing high-speed air into the miners, water can easily condense at the miner intake , and it's game over.

3. If your farm is turned off for any reason and the room temperature drops to the outside temperature while RH is above 80%, lower the fan speed until the temperature builds up inside the farm.

And here is some golden advice: use Whatsminers. They are tanks. The last Antminer that was truly built to last was the S9 series. Whatsminers are much more robust.

If you need advice on designing the farm building or layout, feel free to reach out. My partner and I have extensive experience mining in forest areas as well as extremely hot deserts.

[FP91G]

We are starting out in the Philippines with a few facilities across the archipelago. During the dry season, we don't have much concern, only the rainy season with high humidity seems critical. We have been in contact with the team from Mara Inc., they are also always looking for alternative mining locations, but I think they only operate the fancy new miners.

Excellent! So used S19s in a small and well ventilated hollow block building would work? Just filtered air and no dehumidification? Anybody doing that already somewhere?

You need to experiment; I don't know how high your humidity is. For example, when I started mining in a humid room, I dried it out first. It's important to prevent water from dripping from the ceiling. Later, the equipment worked perfectly with open windows for years, while the humidity outside can reach 80%.
If you don't have condensation, then in theory, ASICs can operate with humidity up to 90%.

If you start mining outside the rainy season, your hangar will be free of humidity. ASICs generate a lot of heat, and you won't have subzero temperatures outside.
The main secret of this type of mining is to keep the temperature in your hangar constant and avoid humidity issues. Hurricanes and floods are common in the Philippines, and I see this as a major hazard.

[mikeywith]

If you start mining outside the rainy season, your hangar will be free of humidity.

A minor correction, higher temps don't decrease humidity, the water in the air will be the same outside and inside the mining farm and that in simple terms is called (humidity), what changes here is relative humidity, hot air can hold more water before condescending starts and thus when you measure RH inside it will be lower.

[FP91G]

If you start mining outside the rainy season, your hangar will be free of humidity.

A minor correction, higher temps don't decrease humidity, the water in the air will be the same outside and inside the mining farm and that in simple terms is called (humidity), what changes here is relative humidity, hot air can hold more water before condescending starts and thus when you measure RH inside it will be lower.

The ASIC operates on the principle of a fan heater; heating causes relative humidity to drop, which is known as the "dry air" effect.
The secret is to maintain an optimal room temperature using ventilation. This can be done through calculations, or you can try it experimentally on old ASICs. After all, electricity is free.

[BambooSynergy]

Absolutely outstanding advice! Thank you very much. Highly appreciated. We will do exactly that.

[mikeywith]

I did not disgree with the general principle, you said his farm will be free of humidity, I corrected the "term".

humidity does not go away with higher temp

If the outside temp is 20c the maximum amount of water per cubic meter the air can hold is 17.3 g/m³ that gives it an RH of 100%, if your meter reads 50% RH it simply means there is 8.65 grams of water per cubic meter in the air.

Now go an heat that air to 100c, how much water/humidity will be in the air? the same 8.65 grams of water, however, since air at 100c can hold 598 grams of water per m3, then 8.65 grams / 598 grams gives you 1.45%, so RH drops from 50% to 1.45% but actual/absolute humidity doesn't change.

Now speaking of low RH, there is a HUGE risk of ESD when running electronics at low RH, when we ran our closed-AC-cooled farm we ran into low RH issues because ACs do lower absolute humidity which lowers RH, on most universal standards they say don't go below 20% RH, I contacted one of MicroBT's engineers and he said I could safely ignore that and go to as low as 5%, ours was at about 7% and we wanted to keep it above 10% to stay safe, we used a very unsophisticated mechanism to bring bring RH to 10%, we just dropped a few large buckets full of water  and filled them with water once in a while, ideally you want something with huge surface but we just used what we got and had RH almost always above 10% and never had a problem despite many professionals advising against it.