How much AC BTU's needed for mining?

KiraRR

newbie

Activity: 25

Merit: 0

Quote from: PovertyByte on March 19, 2017, 09:33:11 PM

I may go into an apartment with electric covered. I would only be mining on 2 GTX 1070's and 1 GTX 1080 so it won't be insane heat running them all at 50% TDP which would be 270w after PSU efficiency during the hotter months. How many BTU's should be sufficient to cool a room that would get usual summer heat plus the heat output of those GPU's?

My friend has the same problem. Well outside air typically hits around 80 degrees in the garage. The 7 GPU's get hotter than the outside air so he moved her entire rig out to the garage! Now if you get winter and need heat you can move them back in but as he is in New Zealand and he uses this system: http://fonko.co.nz/commercial-home/cool-and-freezer-rooms/ BTW the RX 480 max temp is 90 degrees Celsius that is 194 degrees Fahrenheit so being in the garage has not affected the temperature of the cards by more than 2-3 degrees Celsius.

Za1n

legendary

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Its roughly 3.41 BTU per watt, so assuming you have a 500 watt total draw (measured at the wall) for the system you would be generating an extra 1,705 BTU/hr in heat. Simply use the AC room size recommendations and get one 2,000 BTU watt higher using this example. Here is a AC sizing guide for various room sizes: http://www.apartmenttherapy.com/what-size-air-conditioner-do-i-need-191400

So say you have 600 sq ft of apartment space to cool down, they recommend a 14,000 BTU unit. Then add your mining overhead to this using 3.41 watts/BTU mentioned earlier, so using the 500 watt system example, you would want something in the 16,000 BTU range. Also make note of that sites recommendations if your apartment gets a lot of sun, or if it will have additional people, as these factors will also add additional capacity requirements.

PovertyByte

sr. member

Activity: 420

Merit: 250

Quote from: fanatic26 on March 20, 2017, 03:41:58 PM

Be aware that the AC will basically eat up most of your mining profits when you pay for electricity which is why everyone is recommending against it. Since you state the the apartment covers electricity this shouldnt be an issue for you. The rigs put off a fair amount of heat but in a small room a 7500 BTU AC should still be able to keep up.

Electric cost is fixed in this place, its a non issue. Only logical debate I saw against AC in the thread was air flow in the room

fanatic26

hero member

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Be aware that the AC will basically eat up most of your mining profits when you pay for electricity which is why everyone is recommending against it. Since you state the the apartment covers electricity this shouldnt be an issue for you. The rigs put off a fair amount of heat but in a small room a 7500 BTU AC should still be able to keep up.

PovertyByte

sr. member

Activity: 420

Merit: 250

There would be no AC through the rest of the apartment to pull cool air into the room. There is also very strong wind that is on and off in the area. A window fan until on exhaust will work while there is no wind but if wind gut come through while I am away it would overpower the fans exhaust and wind up breaking it.

It's AC or bust

I would use a venting technique if it was that simple but window fan units on exhaust are prone to get broken. Intake would pull humidity into the room. dehumidifiers produce heat so that's a losing case

ccccccc7

full member

Activity: 223

Merit: 100

As probably all have and will say - AC is useless for this purpose

Need air movement

Fresh (cool) air should be drawn in to your mining room and stale (hot) air should be sucked out

This principle can be displayed by opening a window/door on either side of your house and let the wind do the work (depends if your location is windy enough).

If there is a huge amount of heat being generated then add large fans to enact the above

acostaja

newbie

Activity: 18

Merit: 0

NO A/C as other said dont worth, enclose your rig/gpu on something (allow airintake from your room) and duct the heat to the outside moreless like a chime.

greaterninja

hero member

Activity: 924

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You need about 12000-14000 BTU from a portable AC for every 3000-3500 watts used in a small space.
Secondly, it really comes down to your heat removal techniques used.
Anyway, its cheaper to just vent that heat out of your apartment somehow or have fans suck in and suck out hot air. Best thing would be to put in garage or outside shed.

adaseb

legendary

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Merit: 1723

Its not smart using AC for mining. You need to vent the exhaust properly.

PovertyByte

sr. member

Activity: 420

Merit: 250

I may go into an apartment with electric covered. I would only be mining on 2 GTX 1070's and 1 GTX 1080 so it won't be insane heat running them all at 50% TDP which would be 270w after PSU efficiency during the hotter months. How many BTU's should be sufficient to cool a room that would get usual summer heat plus the heat output of those GPU's?

Topic: How much AC BTU's needed for mining? (Read 1486 times)