Retired Defense Industry Engineer xxx
- Reaction score
- New England
Depends on how close the tubing is to the surface...the probe you have is probably located between the runs, or on the wall. Peak temperatures right over the tubing could be considerably higher than that midpoint between two runs. You're measuring average, not peak temperatures. It could become especially problematic if heating a cold slab verses one that has stabilized at the desired temperature...the difference between peak and average temperatures would be much greater...you have to account for these boundary conditions if you want a safe system, thus the lower input temperatures. You have to realize it will take awhile to bring a large mass up to temp.