My second ZEC + XMR+ ETH thread builds info links thoughts and photos. - page 39.

AmDD

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Activity: 1027

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Quote from: vg54dett on December 08, 2016, 02:08:14 PM

According to current profitability, I guess most of you guys are now mining Eth (except for the rigs that need to get lower power consumption, where zec can still be interesting).
What pool do you use nowadays ?
Is ethermine still a good choice, with fair payouts ?
Many of use noticed their new zec pool, flypool, was not very fair ...

It depends for me...

I have a number of 2GB cards that cant mine Eth anymore so they are still on ZEC. I have some 7950's (3gb) and while they can mine ETH I get more profit from ZEC so thats where they are. The few rigs I have with 4GB cards are on ETH.

citronick

legendary

Activity: 1834

Merit: 1080

---- winter*juvia -----

Quote from: vg54dett on December 08, 2016, 02:08:14 PM

According to current profitability, I guess most of you guys are now mining Eth (except for the rigs that need to get lower power consumption, where zec can still be interesting).
What pool do you use nowadays ?
Is ethermine still a good choice, with fair payouts ?
Many of use noticed their new zec pool, flypool, was not very fair ...

I will stick to ZEC for awhile more, since mining this power consumption and temps down.

While ETH with CDM 7.4 at ETH mining only - power consumption and temps too high for my comfort.

I am contemplating ZEC to XMR, and last resort back to ETH.

XMR mining with Claymore's Cryptonite miner behaves the same as ZEC, so will continue to enjoy the power savings and lower temps.

With all the speed in latest CZM v9... I am sure Claymore now can leverage what he learnt in ZEC and apply to XMR because both are memory intensive algos. With that.... looking forward to another roller coaster ride with XMR turbo fast and furious journey with Claymore. I hope he will continue to improve his XMR miner.

vg54dett

hero member

Activity: 501

Merit: 500

According to current profitability, I guess most of you guys are now mining Eth (except for the rigs that need to get lower power consumption, where zec can still be interesting).
What pool do you use nowadays ?
Is ethermine still a good choice, with fair payouts ?
Many of use noticed their new zec pool, flypool, was not very fair ...

arielbit

legendary

Activity: 3416

Merit: 1059

Quote from: QuintLeo on December 08, 2016, 02:53:02 AM

Quote from: arielbit on December 07, 2016, 09:40:27 PM

running mining rigs makes the air in my mining room drier than the rest of the house, the water i spilled on the floor evaporated quickly, it is quicker to dry clothes in my mining room compared in drying them outside, and a portion of the room becomes cooler when clothes are being dried. I defrost stake in more or less 5 mins Cheesy

...those observations for me makes me think that swamp cooling here is feasible..i may enjoy the cooler climate now but i know what summer will bring to my mining room

i have no way of measuring humidity here but based from my observations above, a constant pump of water to the cooling pads or columns of towels(custom made Grin

) and a fan would make a difference here.

i haven't researched more about humidity but i think humidity or water in the air helps GPUs to transfer more heat to the air just like how water in the radiator helps transfer heat from the car engine to the radiator..

Humidity level of the air as such has insignificant effect on heat transfer from a heatsink to air.

Your mining room "gets drier" because air can hold more moisture as it gets warmer, so the "relative humidity" drops even if the actual amount of moisture in the air per CC stays the same.

drying clothes acts as an impromptu evaporative cooler.

What area are you in?

i'm in south east asia.

Theres another factor..the water tank, i'm thinking at least 155 liters or more, the water that goes into the mining room and goes down to the dirty kitchen serves as a conduit of heat to the tank (warm water goes back to the tank in loop)...the water will serve as a heat sink too.

Maybe during hotter hours or days i can try to bypass the floater and let the cool tap water trickle, excess water will flow directly to the drain.

QuintLeo

legendary

Activity: 1498

Merit: 1030

Quote from: arielbit on December 07, 2016, 09:40:27 PM

running mining rigs makes the air in my mining room drier than the rest of the house, the water i spilled on the floor evaporated quickly, it is quicker to dry clothes in my mining room compared in drying them outside, and a portion of the room becomes cooler when clothes are being dried. I defrost stake in more or less 5 mins Cheesy

...those observations for me makes me think that swamp cooling here is feasible..i may enjoy the cooler climate now but i know what summer will bring to my mining room

i have no way of measuring humidity here but based from my observations above, a constant pump of water to the cooling pads or columns of towels(custom made Grin

) and a fan would make a difference here.

i haven't researched more about humidity but i think humidity or water in the air helps GPUs to transfer more heat to the air just like how water in the radiator helps transfer heat from the car engine to the radiator..

Humidity level of the air as such has insignificant effect on heat transfer from a heatsink to air.

Your mining room "gets drier" because air can hold more moisture as it gets warmer, so the "relative humidity" drops even if the actual amount of moisture in the air per CC stays the same.

drying clothes acts as an impromptu evaporative cooler.

What area are you in?

ps_jb

hero member

Activity: 742

Merit: 500

Quote from: arielbit on December 07, 2016, 09:40:27 PM

i haven't researched more about humidity but i think humidity or water in the air helps GPUs to transfer more heat to the air just like how water in the radiator helps transfer heat from the car engine to the radiator..

Man - you are going to the right direction. Next stop is cooling with hydrogen gas - best industrial coolant

arielbit

legendary

Activity: 3416

Merit: 1059

Quote from: QuintLeo on December 07, 2016, 09:04:22 PM

Quote from: arielbit on December 07, 2016, 10:22:05 AM

i believe those evap coolers won't be much effective if the whole unit absorbs the heat and becomes almost equal to the heat of the room...where would the heat go? How about if the water from the unit evaporated? How will you replenish supply automatically?

That's why i'm going to customize swamp cooling using water tank, floater (connected to tap water supply), pump, and over flow connected to drainage..

Doesn't significantly matter - the amount of heat input it takes to make water change phase from liquid to vapor is over 500 TIMES the amount of heat input it takes to raise the temp of the same amount of water 1 degree C.
A few degrees difference in the temp of the water in the tank of an evaporative cooler doesn't matter enough to notice.

Humidity of the air being cooled via an evaporative system matters a LOT though - they work a ton better in areas with dry air than areas with humid air.
Kuwait loves them, Malaysia would find them pretty much worthless.

running mining rigs makes the air in my mining room drier than the rest of the house, the water i spilled on the floor evaporated quickly, it is quicker to dry clothes in my mining room compared in drying them outside, and a portion of the room becomes cooler when clothes are being dried. I defrost stake in more or less 5 mins Cheesy

...those observations for me makes me think that swamp cooling here is feasible..i may enjoy the cooler climate now but i know what summer will bring to my mining room

i have no way of measuring humidity here but based from my observations above, a constant pump of water to the cooling pads or columns of towels(custom made Grin

) and a fan would make a difference here.

i haven't researched more about humidity but i think humidity or water in the air helps GPUs to transfer more heat to the air just like how water in the radiator helps transfer heat from the car engine to the radiator..

QuintLeo

legendary

Activity: 1498

Merit: 1030

Quote from: arielbit on December 07, 2016, 10:22:05 AM

i believe those evap coolers won't be much effective if the whole unit absorbs the heat and becomes almost equal to the heat of the room...where would the heat go? How about if the water from the unit evaporated? How will you replenish supply automatically?

That's why i'm going to customize swamp cooling using water tank, floater (connected to tap water supply), pump, and over flow connected to drainage..

Doesn't significantly matter - the amount of heat input it takes to make water change phase from liquid to vapor is over 500 TIMES the amount of heat input it takes to raise the temp of the same amount of water 1 degree C.
A few degrees difference in the temp of the water in the tank of an evaporative cooler doesn't matter enough to notice.

Humidity of the air being cooled via an evaporative system matters a LOT though - they work a ton better in areas with dry air than areas with humid air.
Kuwait loves them, Malaysia would find them pretty much worthless.

CFM on a fan is a function of it's RPM, diameter, and efficiency. A smaller high-RPM fan (think Delta 60x25mm screamer like some CPU coolers used back in the day) can blow more air than a low-RPM higher diameter fan (that 60 CFM screamer turning at around 8000 RPM blew more air than a lot of 120mm fans).

If you expect a fan to blow hot air out of a space (or cold air into it) you have to have somewhere for replacement air to get into / out of the space. Doesn't do any good to set up a vent fan if there's no other way into or out of the space.

arielbit

legendary

Activity: 3416

Merit: 1059

Quote from: Redrose on December 07, 2016, 05:05:11 PM

Quote from: citronick on December 07, 2016, 05:36:59 AM

I am trying to use this to blow out the hot air in my warehouse.

I have tried many different positions but the temps seems unchanged

I may doing this wrong way or wrong placement

Anybody has seen this in action?

How is exactly your warehouse ? Has it open windows ? Do you have access to a source of fresh air ? Another possibility would be blowing that fresh air directly on the cards, even if I'm not sure that it will work. A solution, complicated, I know, would be to create a network of fans that would push the hot air into a funnel, connected to that machine.

i'm imagining here..

The way it can work is if you have an attic like or a side of the building where you can throw the hot air...that place where you throw hot air should not find a way back and the wall is heat insulated for maximum performance...and then the fresh air comes from the other side, preferrably the cooler side, and just like what phil said the new/fresh air should be cool enough because if that air is just a little bit cooler you may get only a slight decrease in temp

Redrose

hero member

Activity: 756

Merit: 502

Quote from: citronick on December 07, 2016, 05:36:59 AM

I am trying to use this to blow out the hot air in my warehouse.

I have tried many different positions but the temps seems unchanged

I may doing this wrong way or wrong placement

Anybody has seen this in action?

How is exactly your warehouse ? Has it open windows ? Do you have access to a source of fresh air ? Another possibility would be blowing that fresh air directly on the cards, even if I'm not sure that it will work. A solution, complicated, I know, would be to create a network of fans that would push the hot air into a funnel, connected to that machine.

AmDD

legendary

Activity: 1027

Merit: 1005

Quote from: AriesIV10 on December 07, 2016, 08:54:24 AM

Quote from: Charloz24 on December 07, 2016, 08:31:53 AM

Quote from: citronick on December 07, 2016, 08:19:28 AM

Quote from: AriesIV10 on December 07, 2016, 07:12:56 AM

Quote from: citronick on December 07, 2016, 05:36:59 AM

I am trying to use this to blow out the hot air in my warehouse.

I have tried many different positions but the temps seems unchanged

I may doing this wrong way or wrong placement

Anybody has seen this in action?

VERY INTERESTING! Do you have more information on it? CFM? Circumfrence?

65 metre square per minute

https://www.horme.com.sg/product.aspx?id=2915

so a little over 700 CFM

Here is one twice the volume and you get the hose with it: http://www.globalindustrial.com/p/hvac/fans/blower/portable-ventilation-fan-8-inch-with-16-feet-flexible-ducting?infoParam.campaignId=T9F&gclid=CjwKEAiAg5_CBRDo4o6e4o3NtG0SJAB-IatY4NcBO54Q_-EhabNKm8PXtT0XD86LcOMmtBFXVrzbPBoCzYLw_wcB

Sorry for the off topic comment, but I see this site has a few different size fans. They have an 8" 12" and 16". Any idea why the 12" has a higher CFM rating than the 16"? A fan like this could be useful to me in moving heat around to more needed areas this winter.

arielbit

legendary

Activity: 3416

Merit: 1059

Quote from: AriesIV10 on December 07, 2016, 10:07:07 AM

Quote from: arielbit on December 07, 2016, 10:04:07 AM

Quote from: citronick on December 07, 2016, 09:48:52 AM

Quote from: arielbit on December 07, 2016, 09:46:31 AM

Quote from: philipma1957 on December 07, 2016, 09:07:48 AM

what air comes in?
you may need a second unit on to pull air into the warehouse.

and if a recall it is hot where you are.

So if the air temp is 100f in the warehouse and the outside temp is 100f

temps will not drop a lot but the temps in the warehouse may not raise to say 105f

fan cooling helps but when it is really hot you don't drop a lot.

My solar array was at 95f when outside temps were 95f but no fans and I went to 100f

these temperature behavior by using fans is what i'm experiencing...fans can only do much, we have to find a way where we can direct the heat or make the heat transfer to.

Planning to install swamp cooler in my mining room before summer begins.

swamp cooler?

OMG - whats that ?

the concept is the same with the evaporative cooler fans that can be bought at the dept. store..

Swamp cooling is like utilizing water to cool your area/room/garage....you can google for more visuals and explanations

Here is one. Make sure you look at the effectiveness in the Region that you live in the US.

http://www.homedepot.com/p/PORTACOOL-10100-CFM-Variable-Speed-Portable-Evaporative-Cooler-for-2650-sq-ft-PAC2K36HPVS/202221389

i believe those evap coolers won't be much effective if the whole unit absorbs the heat and becomes almost equal to the heat of the room...where would the heat go? How about if the water from the unit evaporated? How will you replenish supply automatically?

That's why i'm going to customize swamp cooling using water tank, floater (connected to tap water supply), pump, and over flow connected to drainage..

ps_jb

hero member

Activity: 742

Merit: 500

Quote from: citronick on December 07, 2016, 09:48:52 AM

swamp cooler?

OMG - whats that ?

That will not work in Germany

AriesIV10

legendary

Activity: 1260

Merit: 1006

Mine for a Bit

Quote from: arielbit on December 07, 2016, 10:04:07 AM

Quote from: citronick on December 07, 2016, 09:48:52 AM

Quote from: arielbit on December 07, 2016, 09:46:31 AM

Quote from: philipma1957 on December 07, 2016, 09:07:48 AM

what air comes in?
you may need a second unit on to pull air into the warehouse.

and if a recall it is hot where you are.

So if the air temp is 100f in the warehouse and the outside temp is 100f

temps will not drop a lot but the temps in the warehouse may not raise to say 105f

fan cooling helps but when it is really hot you don't drop a lot.

My solar array was at 95f when outside temps were 95f but no fans and I went to 100f

these temperature behavior by using fans is what i'm experiencing...fans can only do much, we have to find a way where we can direct the heat or make the heat transfer to.

Planning to install swamp cooler in my mining room before summer begins.

swamp cooler?

OMG - whats that ?

the concept is the same with the evaporative cooler fans that can be bought at the dept. store..

Swamp cooling is like utilizing water to cool your area/room/garage....you can google for more visuals and explanations

Here is one. Make sure you look at the effectiveness in the Region that you live in the US.

http://www.homedepot.com/p/PORTACOOL-10100-CFM-Variable-Speed-Portable-Evaporative-Cooler-for-2650-sq-ft-PAC2K36HPVS/202221389

arielbit

legendary

Activity: 3416

Merit: 1059

Quote from: citronick on December 07, 2016, 09:48:52 AM

Quote from: arielbit on December 07, 2016, 09:46:31 AM

Quote from: philipma1957 on December 07, 2016, 09:07:48 AM

what air comes in?
you may need a second unit on to pull air into the warehouse.

and if a recall it is hot where you are.

So if the air temp is 100f in the warehouse and the outside temp is 100f

temps will not drop a lot but the temps in the warehouse may not raise to say 105f

fan cooling helps but when it is really hot you don't drop a lot.

My solar array was at 95f when outside temps were 95f but no fans and I went to 100f

these temperature behavior by using fans is what i'm experiencing...fans can only do much, we have to find a way where we can direct the heat or make the heat transfer to.

Planning to install swamp cooler in my mining room before summer begins.

swamp cooler?

OMG - whats that ?

the concept is the same with the evaporative cooler fans that can be bought at the dept. store..

Swamp cooling is like utilizing water to cool your area/room/garage....you can google for more visuals and explanations

citronick

legendary

Activity: 1834

Merit: 1080

---- winter*juvia -----

Quote from: arielbit on December 07, 2016, 09:46:31 AM

Quote from: philipma1957 on December 07, 2016, 09:07:48 AM

what air comes in?
you may need a second unit on to pull air into the warehouse.

and if a recall it is hot where you are.

So if the air temp is 100f in the warehouse and the outside temp is 100f

temps will not drop a lot but the temps in the warehouse may not raise to say 105f

fan cooling helps but when it is really hot you don't drop a lot.

My solar array was at 95f when outside temps were 95f but no fans and I went to 100f

these temperature behavior by using fans is what i'm experiencing...fans can only do much, we have to find a way where we can direct the heat or make the heat transfer to.

Planning to install swamp cooler in my mining room before summer begins.

swamp cooler?

OMG - whats that ?

citronick

legendary

Activity: 1834

Merit: 1080

---- winter*juvia -----

Thanks Phil for getting the bigger picture into perspective _ I now know what I'm up against.

38-39c is 100F, so I am nearly at the limits.

The GPU rigs are still OK overall .... but 2 rigs 5x390s and 6xRX480 rigs are acting up due to Claymore stopping a GPU from overheating ... then the whole rig stops mining.

I dread the time to go back to ETH mining because thats where temps and power goes up.

I think I will stay mining ZCASH for awhile more, then if that fails.... XMR, then last resort ETH with lowest intensity.

arielbit

legendary

Activity: 3416

Merit: 1059

Quote from: philipma1957 on December 07, 2016, 09:07:48 AM

what air comes in?
you may need a second unit on to pull air into the warehouse.

and if a recall it is hot where you are.

So if the air temp is 100f in the warehouse and the outside temp is 100f

temps will not drop a lot but the temps in the warehouse may not raise to say 105f

fan cooling helps but when it is really hot you don't drop a lot.

My solar array was at 95f when outside temps were 95f but no fans and I went to 100f

these temperature behavior by using fans is what i'm experiencing...fans can only do much, we have to find a way where we can direct the heat or make the heat transfer to.

Planning to install swamp cooler in my mining room before summer begins.

philipma1957

legendary

Activity: 4256

Merit: 8551

'The right to privacy matters'

if 65 meter squared = 700 cfm it is far too weak

you need to pull 2000 cfm

fast search 1550 cfm below

https://www.zoro.com/air-systems-international-portable-fan-12-in-220vac-cvf-12ac50/i/G0286155/

note this:

Maximum Flow in Free Air: 1555 cfm

so the tube will lower it

~~so yours is 700 cfm seem too weak~~

also what air replaces the air you pull out.

okay I found more info

http://www.metric-conversions.org/volume/cubic-feet-to-cubic-meters.htm

if you do 65 m3 it is 2300 cfm

So how much power is in your mine 6kwatts

or more like 16kwatts

the pdf below show the unit can suck or blow air

http://www.globalindustrial.com/site/images/universal/product_extras/portableventilatorfanoperationmanual.pdf

so you are using yours to pull air out of the warehouse.

what air comes in?
you may need a second unit on to pull air into the warehouse.

and if a recall it is hot where you are.

So if the air temp is 100f in the warehouse and the outside temp is 100f

temps will not drop a lot but the temps in the warehouse may not raise to say 105f

fan cooling helps but when it is really hot you don't drop a lot.

My solar array was at 95f when outside temps were 95f but no fans and I went to 100f

citronick

legendary

Activity: 1834

Merit: 1080

---- winter*juvia -----

Quote from: AriesIV10 on December 07, 2016, 08:54:24 AM

Quote from: Charloz24 on December 07, 2016, 08:31:53 AM

Quote from: citronick on December 07, 2016, 08:19:28 AM

Quote from: AriesIV10 on December 07, 2016, 07:12:56 AM

Quote from: citronick on December 07, 2016, 05:36:59 AM

I am trying to use this to blow out the hot air in my warehouse.

I have tried many different positions but the temps seems unchanged

I may doing this wrong way or wrong placement

Anybody has seen this in action?

VERY INTERESTING! Do you have more information on it? CFM? Circumfrence?

65 metre square per minute

https://www.horme.com.sg/product.aspx?id=2915

so a little over 700 CFM

Here is one twice the volume and you get the hose with it: http://www.globalindustrial.com/p/hvac/fans/blower/portable-ventilation-fan-8-inch-with-16-feet-flexible-ducting?infoParam.campaignId=T9F&gclid=CjwKEAiAg5_CBRDo4o6e4o3NtG0SJAB-IatY4NcBO54Q_-EhabNKm8PXtT0XD86LcOMmtBFXVrzbPBoCzYLw_wcB

the one that I got is 300mm (the largest one they have) and 2800 RPM and 10m hose sold separately.

Topic: My second ZEC + XMR+ ETH thread builds info links thoughts and photos. - page 39. (Read 147923 times)