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I have no way of proving the accuracy of the meter but given that two of these miners are heating a four bed house I don't doubt they're chewing through power :) Edited to add - well they're at least heating the hall, landing, back spare room and my office to an uncomfortable level :)

Lol :) the figures come from plugging it in via a meter which records watts, amps etc. Those are Max figures but the miner runs close most of the time. :)

I'll grant that there isn't a huge body of information out there :) Some seem to be able to make it work, more as a hobby or for the fun of it. One company selling kits is http://www.pugetsystems.com/submerged.php however they're not exactly pushing hard given they don't know when they'll be...

Given the other topics posted on the page you linked to I strongly suspect that they're not going to be very interested in advising on connecting a heat source to the central heating / DHW system. :)

I don't think that logic works given that 1) Oil can move more heat than air and so you need a lower flow for a given amount of heat to be removed 2) Heat sinks exist which don't required a fan so I can use one of these if the heat removal is an issue (though this will add yet more expense to...

I think the actual technology to oil cool the computer is established, if not without some issues - especially around resale, the tricky but is about 1) getting the heat into the house heating/hot water supply and 2) understanding the calculations about doing so and 3) the methods to do this...

Andy Thanks for the words of caution, they are appreciated. Many of the problems above are negated by the solid state nature, no discs etc. The mechanical connections comment is worrying - can you expand on it?

Failure of the pump would be an issue as the computers would then cook in their own heat do I will need a control system to check this, there will also need to be a Thermostat to send the content to an external rad if the heat store isn't cooling the oil enough. Both should be fairly simple...

Hence my thoughts about possibly combining it with existing, unformed, plans to do solar hot water, I fully accept that on its own the financial case might be a challenge! :) The level of heat available / cooling required is an uncertainty though - I'm very interested in how much I need to...

Wow! Really? That's amazingly low - is this the optimum for performance? Thanks Miles

OK in principle I can do this, but not for a few weeks. In the mean time the watts the systems are drawing at the wall will be mainly being converted into heat surly? There's some noise and kinetic energy losses in the fans (5 chassis fans and 10 on the cards) as there's no hard drive etc...

The graphics cards are the hot bits and at the moment they are controlled to 80 degrees Celsius however I think that when people use water cooling they tend to be at around 50, maybe lower. The honest answer is that until I build a prototype I will not know for sure but I'm expecting it to be...

This maybe true, I'd like to understand how to check this and the alternative is to just dump the heat outside or worse yet be baked inside by the current site cooling! :) If the heat store (assuming this is used) is costed as part of the solar hot water buy then element will be reduced... Man...

Sorry, knew I'd missed something out! I'm using immersion cooling where the whole thing is immersed in oil so I don't need to fanny around with individual components and can pump as much oil as I need using robust technologies rather than plastic pipes and fittings.

I have a bunch of computers which currently put out an uncomfortable amount of heat into the air. Not only isn't this very nice but it is wasteful. I have been kicking around the idea of trapping the heat by liquid cooling and feeding this hot fluid (probably oil) into a heat exchanger to play...