Oil has the higher BTU rating
Depends. If it is Liquified Nat. Gas then it has the higher rating.
102,000 BTU = 1 ccf
Typically, use 5 * the volume in cubic feet to get BTU/hour for natural gas heaters. For this shop, that works out to 180,000 BTU/hr. Lower ceilings would make a big difference here...
The answer to this depends on the cost of natural gas. In my area, natural gas is about $11 US per 1000 Cubic Feet or basically 1.1 cents per cubic foot. At the same time, electricity in my area is 10.9 cents per kilowatt hour. Neither of these costs include taxes and customer charges so the actual cost is actually higher. To answer the question though, one kilowatt is the equivalent of 3416 Btu. One cubic foot of natural gas has 1030 Btu per cubic foot. So we need 3416/1030 or 3.3 cubic feet of natural gas. At 1.1 cents per cubic foot that is 3.63 cents of natural gas. Now if you were using these to heat water, an electric heating element transfers about 98% of it's energy to the water. A natural gas heater only transfers about 65% of it's energy to the water while the rest goes out the flue pipe. So the 1 kilowatt of electricity transfers 3348 Btu to the water. To get the same heating with natural gas would require 3348/.65 or 5150 Btu of natural gas. So 5150/1030 is 5 cubic feet or 5.5 cents of natural gas. Still considerably cheaper than using electricity in my area.
one cubic feet = 1028 Btu
No... that would be underfiring it, causing the inside of the furnace to become a dangerous, sooty mess. If you are looking to save fuel I would say the proper way to go is to have a Manual J heat load calculation done on your home and then if indicated switch to a smaller or more efficient furnace. Furnace size is indicated on the mfr`s unit tag as BTU Input (fuel required to produce stated output). The BTU Output rating is the rated Output after allowing for inefficiency losses (what is lost up the chimney). For example a furnace with an input rating of 100,000 BTU and an output rating of 80,000 BTU is an 80% efficient furnace. Supposing your Heat Load calculation says an 80,000 output is what you need, you can save by switching to a 90% efficient 90,000 Input furnace which will have an Output of 81000 BTU/hour (90,000 x 90%) same Output/less Input (fuel). Input is the fuel usage rating, ie Natural Gas provides 1000 BTU/hour per cubic foot used. Therefore with the 100,000 BTU/hour Input furnace, you will use 100 cubic feet of gas for every hour it is running, You can see this on your gas meter, First note the BTU input of your furnace from the tag, divide that # by 1000 (1000 BTU/hour per cubic ft) then divide the result by 60 (60 minutes in an hour) = X cubic feet. Then with the furnace being the only gas appliance in the house operating watch your meter for 60 seconds and if everything is operating properly the reading you get will equal X.Then do the math in reverse X times 60 times 1000 and you should have the Input # you started with. Now going back to the 100,000 80% furnace vs the 90% efficient furnace, it is easy to see one would save 10 cubic feet of gas per hour of run time by upgrading to the 90% or better. In my neck of the woods that equates to a savings of $1.28 for every 10 hours of run time.
natural gas
138,700 btu's
For the purpose of gas rating 1040 btu's/ft3
The BTU (British Thermal Unit) rating of natural gas typically ranges from 950 to 1,100 BTUs per cubic foot. This measurement indicates the energy content of natural gas and is used to determine its heating value.
btu of natural gas to btu of propane
The number on a gas torch usually refers to the British Thermal Unit (BTU) rating, which indicates the heat output of the torch. Higher BTU numbers generally mean a higher heat output, which can affect the torch's performance and suitability for specific tasks. It's important to consider the BTU rating when choosing a gas torch for your intended applications.
102,000 BTU = 1 ccf
Ther are 1,050 BTU in one cubic foot of natural gas.
Natural gas has a heating value of about 1,000 BTU/ft3 (gross) or about 900 BTU/ft3 (net). Acttual values can range about 100 BTU/ft3 higher or lower than the average. So 1,750x106 BTU would be about 2,000 ft3
2500
Federal Energy Regulatory Commission
Specifically 1013.2 btu per standard cubic foot, for pure methane.