Re: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs

For anyone that doesn´t know:

As far as I can tell, grcooling is a form of immersion cooling, utilizing a "standard" 1-phase cooling liquid.

This is correct, we use an oil based dielectric coolant, which is much more cost effective than a two phase cooling approach. Two phase cooling fluids typically cost about $200 per gallon, while oil based liquid coolants are orders of magnitude cheaper. We can handle rack densities of over 100 KW per rack, with a cooling overhead energy use of about 3%. We can achieve this in any climate on the globe. If you can find me flat level ground, Available Power, communications and a roof, I can build you one of the most efficient, cost effective data centers on the planet. Please see below a link to a youtube video of what our cooling units typically look like in action.

https://www.youtube.com/watch?v=6IX9U2zaI_I

I would be happy to answer any questions.

Cheers,
Brandon

.... So you're saying you're moving the fluid from rack to roof, cooling it to ambient and back to rack for less than 3KW per rack?

The path of heat flow through the systems works like this: The heat from the boards/ASICs is tranfered to the rack coolant, which is then pumped to a pump module which houses Redundant pumps, controls, and heat exchangers. The heat exchangers have an oil and a waterside. The waterside of the heat exchangers are plumbed into a warm water loop which runs to a simple evaporative cooling tower, which is the most common & cost effective means for final heat rejection.

The whole system has 3 moving parts: 1. Oil/Coolant pump 2. Water pump for Warm Water Loop. 3. Fan on Cooling tower, which may or may not be on due to current weather conditions.

3-4 KW is a typical energy cooling usage for a 100 KW system.

What is your estimated cooling infrastructure $/W for high density hardware like an SP30?

Your site says $1/w but I'm assuming that's not right because that's about twice as expensive as 2 phase immersion cooling.

$1 per watt is on the high end of our pricing model for corporate data centers (tier III / IV) that serve a much different hardware and redundancy requirement profile. Our cooling solutions tailored for miners are substantially cheaper than $1 per watt. The pricing depends on volume. If I am building a single unit, it is going to have a per unit cost that is much more expensive than if I was building you 100 cooling units. How many SP-30s are you considering?