.at what hose length does the water temperature coming out of the solution begin to cool down?
did some tests back in the day
as mentioned, it starts losing heat as soon as it leaves the machine and heads to wand.
also as Matt mentioned, flow rate makes a difference too.
as well as duty cycle trigger time (longer trigger times get more heat than short blasts regardless of heat system)
^^that assumes the flow hasn't over run HX capacity^^
did a winter temp test 20some years ago.
from
memory (which mean numbers may not be "exact" but are close)
air temps in the mid 20s
125ft of sol line, 75ft or more outside across a cold lot.
2 wands identical, one with 04 jets, one w/06
I was measuring temps to "fiber" not wand valve
Temp ATM 270
04 flow wand continuous flow, best it would get to fiber was 125.
06 flow reached mid 140ish
point is... heat lose from TM to wand is a fact and variable from always some to a lot .
but figure 20-40 degree lose from TM to wand @100ft regardless of heat system.
It's not lineal though....meaning 200 ft of sol line doesn't equate to 80 temp lose .
That's variable too contingent on line laying in cold and/or trigger time duty cycle ...temps will stay higher the more the water flows
..L.T.A.