On Fri, 21 Sep 2018 08:29:17 -0700 (PDT), trader_4 wrote
I have 5% which I think gives me about ~15 gallons of propane. [IMG]
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I ran the math that Ed Pawlowski gave me, after looking at the sticker on the water tank which is 40 gallons and 37,000 BTU per hour.
40 gallons water x 8.3 pounds per gallon x (120 - 70 degrees) = 16,600 BTU
Checking for how many gallons are used per 40 gallon cycle
16,600 BTU x 1 gallon propane/91,000 BTU ~= 0.2 gallons of propaneDoublechecking for time to fill up that 40 gallon tank
16,600 BTU x 1 hour/37,000 BTU ~= 0.4 hours (which is about right)If I did the math right that Ed gave me, 15 gallons of propane should last about 74 full hotwater heater cycles.
15 gallons propane x 1 cycle/0.2 gallons = 75 hotwater heater cyclesDoes my math from Ed's numbers look right to you?