Multiply cubic x feet 1100 (45.5 cubic feet x 1100 = 50,000 BTU) to get BTU from cubic feet.
How do you figure out how many BTUs a gas has?
General safety warning: inappropriate natural or “LP” gas installation, as well as poor inspection and testing methods, can result in harmful conditions, including fire or explosion.
If you smell gas, leave the building immediately and avoid doing anything that could cause a spark, such as turning on a light switch or dialing a phone number. Call your gas company’s emergency number and/or your local fire department from a safe area. The text supplied here is a rough draft that may be erroneous or incomplete.
Gas meters by American Meter Company are shown at the top and left of the page. The AC250 is at the top of the page, and we have further information about it at the end of this article. The American Meter – Singer Co. AC-95 gas meter is seen above.
How to Calculate, Measure, and Set LP “Bottled” Gas or Natural Gas Pressures & BTUH per Cubic Foot is discussed here.
What are the average pressures in a natural gas or LP fuel system, and how do they differ? What is the distinction between butane, propane, and natural gas? Can we just use butane instead of propane or LPG?
How to calculate the BTU capacity of LP or natural gas fired equipment, heaters, or appliances
Computing BTUH: Technical Note: You can calculate your gas-fired equipment’s BTUs per hour of gas usage. Make sure only one gas appliance is on and keep an eye on the gas meter to see how long it takes to utilize one cubic foot of gas.
The amount you calculate for an appliance’s BTU capacity should be close to the nameplate “input” BTUH on the device.
How many cubic feet of natural gas or propane will a heating furnace or boiler consume per hour?
- In an hour of “burner on” time, a 100,000 BTUh furnace will use around 95 cubic feet of natural gas (100,000 1,050 = 95.21).
- In an hour of “burner on” time, a 100,000 BTUh heater will use around 40 cubic feet of propane (100,000 2500 = 40).
How to calculate the conversion ofgallons of propane or natural gas to pounds or BTUs or to volume of gas
A gallon of propane has around 91,500 BTUs and weighs approximately 4.20 pounds. A pound of propane has around 21,500 BTUs in it. The details of the calculation are listed below.
At 60 degrees Fahrenheit, one gallon of LP-gas (propane or C3H8) weighs about 4.20 pounds, contains about 8.66 cubic feet of gas vapor per pound, burns at 3,595 degrees Fahrenheit in air, and takes 23.86 cubic feet of combustion air to burn correctly.
When converting between cubic feet of gas and liquid gallons, keeping the temperature constant aids in decoding common cubic foot gas meter values.
- At 60 degrees Fahrenheit, 1 gallon of LP gas C3H8 weighs 4.20 pounds and holds 8.66 cubic feet per pound.
- Per gallon of LPG, 4.20 pounds x 8.66 cubic feet/pound Equals 36 cubic feet of gas (at 60F).
- At 60F, 1 cubic foot of LP gasC3H8 equals 1/36 gallon of liquid LP or around 0.3 gallon of liquid LP.
Butane Gas Properties
Butane gas (C4H10) has a different set of numbers. One gallon of butane-based LP gas costs:
- Per pound, 1 gallon of butane contains approximately 6.51 cubic feet of gas vapor (at 60 deg. F),
- to smolder To burn correctly, 1 gallon of butane takes 31.02 cubic feet of combustion air.
Our weights and measures for LP gas were corrected thanks to reader Fred G. Van Orsdol. Additional technical editing was provided by reader Bay Ground Control.
What are the common operating pressures of natural gas and LP or “liquid petroleum” gas in the building gas piping and at the appliance?
There are details on LP gas pressures and natural gas pressures in buildings and in gas-fired appliances.
For natural gas, how many BTUs do I require?
British Thermal Units, or BTUs for short, are used by scientists to measure heat value. The amount of energy required to raise one pound of water one degree Fahrenheit is measured in BTUs. It’s the same temperature as a birthday candle flame.
- Each cubic foot of natural gas contains 1,030 BTUs. One gallon of oil has a heat content of 135 cubic feet.
- Each gallon of kerosene contains 131,890 BTUs. One gallon of oil has a heat content of 1.05 gallons.
- Propane has a BTU content of 91,500 per gallon. One gallon of oil produces 1.52 gallons of heat.
- A kilowatt hour of electricity contains 3,413 BTUs (kwh). One gallon of oil has a heat content of 40.6kwh.
- Anthracite coal has a BTU content of 12,000 per pound. One gallon of oil has a heat content of about 12 pounds.
Remember to include any taxes, meter or service charges that the gas or electric companies apply to the bill when comparing unit costs for the various fuels.
Knowing the Cost to Convert from Oil to Gas
Consider the expense of switching from oil to gas before making your selection! There are a number of factors that influence the cost of a conversion, including:
Additionally, here are some things we want our customers to know before making the move from oil to gas:
- According to the US Department of Energy, the US has only 4% of the world’s natural gas reserves, with the remaining 73% concentrated in Russia, Eurasia, and the Middle East.
- According to the international group Methane to Markets, natural gas system losses account for 18 percent of total global methane emissions.
- Fuel conversion, according to the Consumer Energy Council of America, is a “expensive gamble,” and instead of switching fuels, households should modify their oil equipment to accomplish conservation. Conversion is more expensive than updating, and the chances of significant savings are slim.
- Natural gas is highly flammable, and leaks can be quite dangerous. Natural gas heating systems are also the major source of carbon monoxide deaths that are not caused by fire.
- In most cases, neither preventive maintenance nor emergency service are provided by gas utilities. As a result, gas users may be squandering fuel by using improperly tuned equipment, and they may be without aid in the event of a power outage.
How can you figure out how much natural gas you have?
Divide the appliance input by the average Btu (kW. h) heating value per cubic foot of gas to get the cubic feet per hour of gas required. The Btu per cubic foot average is 1,100.
A cubic foot of natural gas contains how many BTUs?
Natural gas can be priced in dollars per therm, dollars per MMBtu, or dollars per cubic foot in the United States.
1 To translate these costs from one price basis to another, the heat content of natural gas per physical unit (such as Btu per cubic foot) is required. The annual average heat content of natural gas provided to consumers in the United States in 2020 was around 1,037 Btu per cubic foot. As a result, 100 Ccf of natural gas equals 103,700 Btu, or 1.037 therms. A thousand cubic feet (Mcf) of natural gas equals 1.037 million British thermal units (MBtu), or 10.37 therms.
These calculations can be used to convert natural gas prices from one pricing basis to another (assuming a heat content of 1,037 Btu per cubic foot):
Natural gas heat content varies by location and type of natural gas customer, as well as with time. For information on the heat content of the natural gas they supply to their clients, consumers and analysts should contact natural gas distribution firms or natural gas suppliers. Customers’ invoices may include this information from some natural gas distribution providers or utilities.
1 Natural gas was measured in cubic feet by the US Energy Information Administration from 1964 to 1964 at a pressure of 14.65 psia (poundspersquareinchabsolute) at 60 degrees Fahrenheit. Since 1965, the pressurebase has been 14.73 psia at 60 degrees Fahrenheit.
How many BTU per square foot do I require?
The cooling capacity of window air conditioners typically ranges from 5,000 to 12,500 British thermal units (Btu/hr.). An air conditioner requires 20 Btu per square foot of living area as a rule of thumb.
However, other factors such as ceiling height and the size of your windows and doorways may necessitate greater cooling capacity.
Multiply the length by the width to determine the size of your room. Because the air conditioner will need to cool both spaces, add the sizes of rooms that aren’t separated by doors. Adjustments are recommended by Energy Star for the following situations:
- If the room is usually occupied by more than two individuals, add 600 Btu for each extra person.
How can you figure out your overall gas load?
Gather detailed information on the make, model, and MJ/hr rating of each appliance by consulting the specification notes. The MJ/hr value indicates how much gas the appliance uses per hour. The total appliance gas load is calculated by summing the MJ/hr ratings of all gas appliances together.
What is the BTU value of a kW?
The fundamental method breakdown of the BTU to kW equation is used by physicists. Engineers developing air conditioners and other HVAC systems use the outtakes. When comparing the energy output of natural gas and electric garage heaters, knowing how many BTUs equals 1 kW is useful.
This translates to 3412 BTU/h for 1 kW. Here’s where you can simply convert kW to BTU.
Divide the BTU by around 3,000 to get a kW figure. You’d figure the power for a 10,000 BTU portable air conditioner to be around 3.3 kW, right? To be precise, it’s 2.93 kW, but 3.3 kW is a decent estimate.
In any event, be certain you purchase a powerful enough air conditioner to chill specific areas of your home.