Calculating pipe spacings

[jayc89]

Assuming you know the heat loss and the mean water temperature of the system (open loop, no mixing), is there a mathematical formula used to calculate the most efficient pipe spacings? Assuming 16mm PERT. I've seen nomograph's used to work it out, so presumable there is a known equation? 

[Andehh]

I'd opt for closer spacing to speed up heating and run a lower temperature!!

[JohnMo]

Once you get below 15W/m2 there basically nearly no difference in flow temp between different centres. Something like 2 or 3 degs between 300 and 100mm centres. As mentioned the only difference is response time. With thick screed the response time is many hours per 0.1 Deg anyway. So I just did 300mm centres. Easy to install, 8 loops over a 195m2, batch charge overnight on E7 at 35 deg flow temp.

[Conor]

Loopcad