- Location
- Indiana-Missouri
Folks....
who here can provide an answer for me on something.....
I'm putting together a production powder-coating line...The washing equipment requires heated water for wash chemicals to be most effective. Wash stage tanks will be emptied/re-filled periodically.
City water fills the tanks, and washing cannot (should not) continue until washing stage water is up to temp.
An idea was presented that I'm skeptical of, i don't think it will have much effect.
The idea was, run the 1 1/2" city line along the upper ceiling of the cure oven. Another manufacturer/end user we toured claims to have done this with measured results. This is supposed to take the edge off the 52-55 degree city water temp on its way to the washer tank. Tabnk water heater supposedly doesn't have to burn as much gas. I call BS.
So here's what info I'd like, and I don't know if there is some simple equation. I cannot find an online calc anywhere....
let's take 1 1/2" water pipe, schedule 40. Let's figure 60 GPM flow rate. water temp at the point of entry into the oven space (hot air) is 55 degrees. ambient air temp in the oven is 425 degrees. water travels in the pipe for 100 feet.
what is the temperature rise as it exits the oven after 100 feet?
I'm expecting the answer to be minimal. My guess is only a few degrees of rise.
I'd just like to know what the calculation ends up being.
I am very much aware that I can do all sorts of clever things to increase transfer efficiency....that naturally comes at the cost of introducing exchangers, pumps, plumbing, copper, etc,etc. It also introduces the opportuntiy for the line to fail, drenching the oven and production parts, and most definitly damage the oven itself from the effects of flash-cooling.
I just need the answer to "chill" someone less-knowledgeable out....
because really.......if it were a cost effective innovation, the equipment manufacturer would build them like this and market the hell out of it as some kind of "green initiative"....
what say you naxja science geeks?
who here can provide an answer for me on something.....
I'm putting together a production powder-coating line...The washing equipment requires heated water for wash chemicals to be most effective. Wash stage tanks will be emptied/re-filled periodically.
City water fills the tanks, and washing cannot (should not) continue until washing stage water is up to temp.
An idea was presented that I'm skeptical of, i don't think it will have much effect.
The idea was, run the 1 1/2" city line along the upper ceiling of the cure oven. Another manufacturer/end user we toured claims to have done this with measured results. This is supposed to take the edge off the 52-55 degree city water temp on its way to the washer tank. Tabnk water heater supposedly doesn't have to burn as much gas. I call BS.
So here's what info I'd like, and I don't know if there is some simple equation. I cannot find an online calc anywhere....
let's take 1 1/2" water pipe, schedule 40. Let's figure 60 GPM flow rate. water temp at the point of entry into the oven space (hot air) is 55 degrees. ambient air temp in the oven is 425 degrees. water travels in the pipe for 100 feet.
what is the temperature rise as it exits the oven after 100 feet?
I'm expecting the answer to be minimal. My guess is only a few degrees of rise.
I'd just like to know what the calculation ends up being.
I am very much aware that I can do all sorts of clever things to increase transfer efficiency....that naturally comes at the cost of introducing exchangers, pumps, plumbing, copper, etc,etc. It also introduces the opportuntiy for the line to fail, drenching the oven and production parts, and most definitly damage the oven itself from the effects of flash-cooling.
I just need the answer to "chill" someone less-knowledgeable out....
because really.......if it were a cost effective innovation, the equipment manufacturer would build them like this and market the hell out of it as some kind of "green initiative"....
what say you naxja science geeks?