Blog
From the racks.
Mining hardware, cooling and heat reuse: figures and lessons from our business.
03 / 9 posts
Hydro & waste heat
Plan the cooling circuit and use the heat in your building.
Coolant for hydro miners – manufacturer specifications and what works in practice
Tap water does not belong in a hydro miner. What Bitmain and MicroBT specify, how well radiator antifreeze from the petrol station does the job and how you mix, fill and check.
When waste heat pays off – heating cost savings versus mining revenue
A single number lets you compare a miner with a gas boiler, an immersion heater and a heat pump – the net price per kilowatt hour of heat. This is how you work it out and how you read the result.
Materials in the cooling circuit – why copper and aluminium do not belong together
The cold plates of a hydro miner are made of aluminium, heating pipes mostly of copper. In the same water, one destroys the other. Which materials are allowed in the miner circuit and where copper can stay.
Hydro miner on the heating circuit – setup, temperatures, heat exchanger
Two separate circuits, a plate heat exchanger, a buffer tank – this is how the heat from a hydro miner gets into the heating system. With the manufacturers' temperatures and the question of where the heat goes in summer.
Greenhouse, drying, pool – where miner waste heat is needed all year
A miner delivers the same amount of heat every day. It fits best where heat is needed in summer too. Five applications with the right cooling type and what you need to watch out for.
Heating with miners – explained briefly
A miner turns one kilowatt hour of electricity into one kilowatt hour of heat and earns Bitcoin while doing so. The principle in a few paragraphs.
Sizing a dry cooler – the calculation for 5, 10 and 50 kW
A dry cooler is not bought by kilowatts alone, but by kilowatts at a specific outdoor temperature. The calculation steps for heat load, temperatures, flow rate and air volume, with example values for three sizes.
Choosing the right pump and pipe diameter for the miner circuit
The miner sets the flow rate, the pipe determines the resistance, the pump has to bring the two together. The calculation from flow rate to pipe diameter and to the right pump.
Combining a miner and a heat pump
A miner and a heat pump are not mutually exclusive. Two setups in which they complement each other – side by side on the same tank, or in series, with the miner as the heat pump's heat source.