WEBVTT

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i freaking knew that this was gonna happen

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it is so bloody hot in the server room here in my new house it's a confined

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space it's insulated to keep all the noise away from the rest of the house

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and it is chock full of computers and the worst part is that this ain't even

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the half of it we're gonna add five more systems for the land gaming room and

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maybe another one yeah maybe another one for the family room and when that

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happens if anyone has the audacity to actually game on these machines they're

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going to cook now here's the thing we have cooling in here this is an

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hvac system we got air conditioning but that would be crazy this heat isn't

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worthless it's energy and when there are so many parts of this house that require

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hot water like the hot water faucets or the in-floor heating why would i pay

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money to generate heat and then pay extra money to get rid of it Jake and i

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came up with a devious plan using those pipes right there we're gonna carry the

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heat away from this server rack and dump it in the pool but the way we're gonna

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do it is a little different different like our

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we've got two main problems to solve one is how to transport that thermal energy

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from the server room to the pool efficiently enough that we aren't just

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losing it all to the environment around us and two is how to dump that thermal

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energy into the pool water now the simplest way on the surface would be to

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just plumb an extra couple of pipes in and use the pool water as a gigantic

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reservoir but this raises some serious

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issues first and foremost is that pool water is freaking nasty imagine if you

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will a microfin arrangement like this but full of dead skin cell goo

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hair bits of leaves and bird

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gross and it gets even worse

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pc water cooling components contain all manner of different materials in this

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system alone we've got petg copper nickel and rubber in the o-rings that

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seal everything up so even if i could filter out all of the debris i'd still

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be running a very high risk of a reaction between all those materials and

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the chlorine and other chemicals that are added to pool water a risk we don't

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have to take i'ma walk you through our original plan these pipes from the

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server room we're gonna run into a heat exchanger and when i say heat exchanger

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you probably think of one of these which is designed to take hot water and

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dissipate that heat to the surrounding air but there's a different kind of heat

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exchanger called a fluid heat exchanger where what you're actually doing is

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you're taking one cold fluid and one hot fluid and exchanging heat between them

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they're super cool and actually really affordable unfortunately this one's made

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of steel which is going to be a problem for well everything i think the good

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news is that you can get heat exchangers made out of more exotic materials including

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titanium which would have been perfect for our application so easy peasy right

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you got your fresh distilled water going back to the server room here you got

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your heat exchanger right here you got your trench down to the pool cold side

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hot side bobs your uncle you're done at least that's what i thought until i

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talked to the pool contractors i'm going okay your existing filtration system in

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the pool house i want to plumb in the heat from the solar panels and the heat

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from the server room and it's all like integrated and intelligently switches

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and they looked at me and they're like what which led me to a truly big brain idea

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if pool water is causing all of my problems corroding my computers or

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adding filtration complexity to my dual loop heat exchanger concept why don't i

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not pump it at all i'll just take my fresh water completely closed loop

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system plum it into a more traditional radiator and then just let the water

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passively exchange heat with the fins they haven't even poured the concrete

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yet so i could do like a little all-cove or something put bars on it so that you

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know nobody accidentally sticks their foot in it it'd be freaking perfect i

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mean sort of perfect that that's pretty janky which is when i had a brain flash

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and my brain went from big to galaxy

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remember when i showed you guys the in-floor hydronic heating system here at

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the new house you probably see where i'm going with this if i can use one of

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these to heat up water run it through plastic tubes encased in

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concrete and heat up the air well then surely i could do the same thing in

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water right the plan then is to have our plumber who actually says he's done

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something like this before really take yeah i know right take pvc tubing and

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run it inside the rebar once that's done

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the way they apply concrete to these is not actually to put a mold down and pour

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it they actually shoot it like someone's got a big hose on their shoulder and

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then someone else is feeding yeah it's called shot cream so once that's done

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our tubes will be completely encased in the concrete which is where

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this guy comes in because getting all of

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these separate systems to work together requires temperature sensors

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relays valves yeah so it's gonna get a little

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complicated when we have three heat sources at this point and one of the

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heat sources the server room we actually have to make sure it doesn't get too hot

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right we don't want the computers overheating here's the plan we're gonna do two separate loops yeah the roof is

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gonna go into the walls conveniently i already asked for extra insulation on

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the pool apparently they don't normally put foam in here is that just because we have such a moderate cloud yeah it

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doesn't really leak out the sides so we already have extra insulation which

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means that our heating loop the really hot one is going to not lose too much

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heat that way it should mostly go into the pool then we're going to do a second

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loop in the bottom so the server room is mostly just going to be about cooling

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the water and less about heating the pool right hopefully we can cool it

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enough that we basically don't have to use external radiators although we'll

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have them just in case so this would be hot no matter which way it goes in the

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event that the pool is drained we would have our cold come back from the

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radiator now what do you what are these servers also go burr oh that makes sense

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alex usually does a better job basically we've got two independent

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loops number one is taking heat from the sun using it to heat up the water in the

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solar panels which incidentally makes them run more efficiently and they make

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electricity water cooled solar panels so we've got the hot water from that that

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runs to this pump which is running on a relay that

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is triggered by the temperature of the pool water you've got your hot water

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going into this loop that goes around the walls of the pool and then cold goes

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back up to the solar panels noise then

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going into the floor of the pool we've got our cold water going to a check

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valve to make sure that this never runs in reverse it doesn't backflow that

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would be super terrible especially because we have two zones cold water

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comes into our server and there are a number of different ways that we can tackle this Jake and i have talked about

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everything from running individual water blocks to the machines with just a big

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manifold on the wall to doing one of those big water cooled doors like they

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have at sfu so that takes just the hot air from the room exchanges it with this

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cold water the water doesn't even need to be that cold that would probably be

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the best way to do it yeah anyway we heat up the water somehow it

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goes to this pump which will run all the time unless i need to perform

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maintenance yeah yeah pump in here or pump out there probably just put it in

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here and then we can put it on battery backup too because the servers can't be

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on and the pump off unless it's a cold door if it's a cold door that's fine

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glad we thought of that okay yes inside then we've actually got a t here oh so

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it'll go one of two ways if the pool is calling for heat then it will go to the

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pool and this one would be our priority we want to dump all of our pool heat in

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from this one yeah then if the pool is not calling for heat it can actually

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kick in this additional radiator so this is not really a one or the other this is

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a this or this and this do you have a way to get water yeah right right there

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oh hi hose though yeah i know how to use that

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one we tried to get it out of here we're end up doing like a wet t-shirt contest

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here speaking of which this t-shirt available lttstore.com

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we could just walk over to the sink you know

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um yeah i could wait oh

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oh crap um yeah it's probably actually not best to

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introduce a bunch of air into that loop he's not breaking things i swear this

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probably isn't the best time for me to tell you that there's an insurance slate

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she's here to do a walk through you saw

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nothing hey look it's not leaking andy

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that's good burn me coming through

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some good pressure some thick pumping right there we just

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need some kind of temperature sensor in the water this isn't a temperature sensor

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this is actually a water leak sensor but we're just going to pretend like it's a

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temperature sensor because look oh that water is really hot it's pretty juicy

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spicy hot water ah there you go pump turned on we got our radiators getting

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nice and cool you'll probably have noticed that this is kind of similar to

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the hydronic heating system in the house right we just have two zones one for the

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radiator and one for the pool we could totally use a system like this valves

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just like this with like a manifold and this would be pool and this one would be

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radiator well that's the thing that made me think oh this isn't such a crazy idea

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after all because we're not reinventing the wheel this is a wheel that is

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extremely well established and reliable

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there's got to be like two zone manifolds you can get i wouldn't even be

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surprised if they just like custom make these and you know what they have four

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leads on there two of them are for opening and closing the valve but the

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other two are to send a signal to something so rather than like having to

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smart control the pump you could just take those two leads to trigger the pump

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and then it's like analog so if that valve's open it turns on the pump that's

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the same system we use here for the boiler there's no electrical control of

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the boiler it's just using that so this isn't the most compelling demo ever but

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come on guys the pool's not even built what do you expect

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enjoyed this video maybe check out the one where we did the solar panel install

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or actually they could do the one where we did the demo with the smart control

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ducts for the air conditioning