Temperature rise at miner outlet is variable based upon multiple variables, inlet temp, flow, overclocking, cooling capacity, etc.

Max discharge shouldn’t exceed 65-70 deg c as to mimic air cooling chip temps.  Personally I wouldn’t want to exceed 50-55 personally.  The discharge temp should be adjusted to make sure miner chip temps don’t exceed 60-65.  I plan to experiment to see what the watt/TH is with cooler temps.

I am in the process of building my hydro cooling setup.  I have understand radiant heat in my shop where Bitcoin miners are housed, will use heat from miners to either heat slab of shop, send heat to my house, or send outdoors to a radiator.  I am in Ohio, USA where heating seasons are longer and such a setup makes sense.  My current deployment will provide more than enough heat to heat both buildings in the coldest of winters and have plans to expand once conversion to water cooling is complete.  It is a no brainer for home use.  A little costly, but a slam dunk on efficiency.