m80 heater
m80 heater
I have a military m80 water heater. at 9 gallons per minute it raises the outlet temp 100 degrees. It is multifuel and I make biodiesel for it. What do you think about using it for my pool in the winter ? Of course more than 9 gallons a minute the max temp would go down. Any body have any comments about it?
-
- Swimming Pool Pro
- Posts: 119
- Joined: Sat 05 Dec, 2009 17:25
- My Pool: Geometric 16K gal shotcrete w/exposed aggregate; Pentair EasyTouch w/wireless, 2 Intellibrites, VS-3050 pump, C&C 200 Filter, IC-40 SWG; Heliocol solar. Rocky's reel
- Location: Space Coast, Florida
m80 heater
Pools take an incredible amount of energy to heat. It takes 8.34 BTUs to raise one gallon of water one degree. 9 gallons a minute implies 4503 BTUs output in one hour. (correct number is 450360 BTUs)
In my pool (16K gallons) - if I wanted to raise the water temp by say 5 degrees I would need to run your heater the following amount of time:
16,000 gallons*8.34BTU/(Gallon-degree)*5 degree=667,200 BTUs to raise 16k gallons 5 degrees
667,200 BTUs / (4503 BTUs/Hour)= 148.17 hours (or 29.67 hours for a one degree rise in temp for a 16K gallon pool).
There are other factors to consider such as evaporation and resultant heat loss, wind/sun, etc., but I figured this was enough to show it wouldn't be economical for use unless the fuel source is free.
edit - forgot your system raises the temp 100 degrees - divide the numbers above by 100 - not as bad as I calculated - math in public sucks
In my pool (16K gallons) - if I wanted to raise the water temp by say 5 degrees I would need to run your heater the following amount of time:
16,000 gallons*8.34BTU/(Gallon-degree)*5 degree=667,200 BTUs to raise 16k gallons 5 degrees
667,200 BTUs / (4503 BTUs/Hour)= 148.17 hours (or 29.67 hours for a one degree rise in temp for a 16K gallon pool).
There are other factors to consider such as evaporation and resultant heat loss, wind/sun, etc., but I figured this was enough to show it wouldn't be economical for use unless the fuel source is free.
edit - forgot your system raises the temp 100 degrees - divide the numbers above by 100 - not as bad as I calculated - math in public sucks
m80 heater
This heater is 400,000 btu's Got it up and running. My pool is 24,000 gallons. It took abour an hour and a half to raise the temp 3.5 degrees. It took about 5 gallons of diesel fuel. Im happy with it.
m80 heater
By the way I started out at water temp 81 degrees. It is 60 degrees outside and the water temp flowing into the pool is 122 degrees
Return to “Solar & Pool Heaters”
Who is online at the Pool Help Forum
Users browsing this forum: No registered users and 4 guests