Quote from: philipma1957 on January 09, 2016, 12:04:10 AM

Quote from: Entropize on January 08, 2016, 10:24:27 PM

I'm trying to build ducting to get heat from 4 s7s out of the basement through the exhaust for the dryer and want to know if it's big enough or needs to be widened? Should the exhaust have it's own fans pulling air?

1 watt = about 3.4 btu

so 1000 watts = 3400 btu

200 watts = 680 btu

thus the s-7 is close to a 4000btu heater

the cfm is about 200 at 4000 rpm fan speed

Does all the 1000W get converted to heat? I had an HVAC guy mention to me that even though the unit takes 1000W, if the antminer is 80% efficient (for example), then only 200W is released as heat.

I'm not clear on efficiency of the power useage for the antminer, nor how much of the 1000W actually is converted into heat.

Any ideas?