You are obviously right, I just experimented with my SS 12 and 25° weather. I got better heat at 600 psi than 450 psi at 6 flow.also
more water through same line increases velocity
increases in velocity mean more turbulent flow
more turbulent flow means more heat transfer
It was non-scientific as can be.is that continuous flow?
or on/off trigger duty cycle while cleaning?
(which and can and does vary per operator)
You want to stand beside your truck and trigger the wand while looking at the temp gauge. See how long it maintains the temperature before it begins to drop.It was non-scientific as can be.
I laid on the wand for 30 seconds on each test and noted the temperature.... in my mind, which is clearly a problem.
I went back through the settings/wands a second time because I know my little HX is goofy at low temperature.
My blower was capped off for this
6 flow, 450 psi... max 170 degrees at about 20 seconds. About the same on the second go around.
8 flow, 450 psi... max 182 degrees at about 15 seconds. Again, about the same the second time.
4 flow, 450 psi... max 165 at about 22 seconds. Same the second time.
4 flow at 600 psi got to 185 around 15 seconds.