I am thinking of changing from propane gas in my house to natural gas. Before I do that I want to compare prices. So I need to know the formula for converting liquid gallons of propane to gas cubic feet of propane before I make the switch. Can anyone help?
2006-12-31 01:16:21 · 8 answers · asked by T. J. M 2 in Science & Mathematics ➔ Engineering
There are 231 cubic inches in one gallon, or roughly 7.5 gallons per cubic foot. Propane is about 95000 btu's per gallon, and a natural gas "therm" means 100000 btu's. So a natural gas therm is roughly equivalent energy to one gallon of propane. When comparing prices also consider the cost of converting all of your appliances from LPG to NG. Orifices will have to be changed and air adjustments made. Good Luck
2006-12-31 01:42:20 · answer #1 · answered by questionable reality 3 · 2⤊ 0⤋
Here is a website that does conversions for you. Keep in mind that when converting gallons to cubic feet and back that you must be talking about no change in phase. That is a gallon of propane under pressure as a liquid will expand to many times that volume if released to the atmosphere as a gas.
So one gallon of liquid is equal to 7.48 cubic feet of liquid, but not as a vapor.
2006-12-31 09:43:50 · answer #2 · answered by richard Alvarado 4 · 0⤊ 0⤋
The propane supplier is correct. You just want to compare dollars per Therm which is the resulting cost for the energy that you use. You do not need to convert the propane and natural gas into the same volume units.
2006-12-31 02:36:40 · answer #3 · answered by rscanner 6 · 0⤊ 0⤋
Propane has a density of 0.1160 lb.ft^3 at 70 degrees and one atmosphere. Therefore 100 lbs will occupy 862 cubic feet.
2016-03-29 01:54:30 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Try asking your Propane Gas dealer. They should be pleased to help if it means gaining a potential long term customer.
2006-12-31 01:21:53 · answer #5 · answered by dawleymouse 4 · 0⤊ 0⤋
Use google calculator. For example
http://www.google.com/search?hl=en&lr=&q=10+gallons++in+cubic+feet&btnG=Search
2006-12-31 02:17:38 · answer #6 · answered by mlpkr 2 · 0⤊ 0⤋
Being a liquid I think it will be the same as water which if my memory serves me right is 6.25 gall cu ft approx
2006-12-31 01:58:32 · answer #7 · answered by intgregory 1 · 0⤊ 0⤋
HOW YUCKLER KNOWS ANY THING OTHER THAN COW'S DUNG
2006-12-31 05:29:28 · answer #8 · answered by Ishfaq A 3 · 0⤊ 0⤋