How much water is produced when burning propane?
In a typical construction heater, propane burning creates 0.98 gallons of water per 100,000 BTUH (less than 100 percent efficiency).
A 100,000 BTUH propane heater, on the other hand, produces around a gallon of water each hour, or about a gallon of water per 100,000 BTUs of heat produced by burning propane. (2017, CHI)
Alternatively from a more scholarly treatment based solely on theory and disregarding heater efficiency,
1,000,000 BTUs of propane equals 1.64 x 11 gallons of water, or approximately 18 US gallons.
Weight of water created when 1 million BTUs of propane are burned = (8.35 lbs/gal x 18 gallons/1MBTUs) = 150.4 pounds
References for Products of Combustion of Propane Gas
- Original source: https://www3.epa.gov/ttnchie1/ap42/ch01/final/c01s05.pdf. LIQUIFIED PETROLEUM GAS COMBUSTIONU.S. EPA, retrieved 2017/10/09, original source: https://www3.epa.gov/ttnchie1/ap42/ch01/final/c01s05.pdf.
When you burn 100,000 btu of natural gas or the equivalent amount of propane, how much water is released into the atmosphere?
How much water is in a cubic meter of natural gas or a gallon of propane, for example?
Question: On 2017-10-08 by Frank – cubic of gases (including water vapor) generated from burning 1000 btus of propane?
Can someone tell me how many cubic feet of gases (including water vapor) are produced when 1000 BTUs of propane are burned?
Reply: On 2017-10-08by (mod) – exhaust gases produced from burningpropane fuel
Because we know that burning a gallon of propane creates 91,000 BTUs of energy (heat) and 1.64 pounds of water, we can calculate that burning 1000 BTUs of propane will yield 1.64/91 gallons of water, or 0.18 gallon of water.
Of course, that water is in the form of vapor, and the volume of that vapor varies depending on temperature and maybe other factors.
We also highlight the additional combustion products and volumes produced by propane combustion.
We avoid giving answers in cubic feet (you didn’t give me a cubic “what” measurement) because the volume of a gas is affected by its pressure (we can assume atmospheric pressure) and temperature (which we don’t know for your heater, but a typical gas furnace will operate between 110 and 140 degrees Fahrenheit depending on when and where the measurement is taken).
What will be the product of burning one cubic foot of propane gas (C3H8)? is a related question that helps us answer your question more thoroughly. Or, to put it another way, what is the result of burning one cubic foot of propane?
When you burn 1 cubic foot of propane, the amount of energy you obtain varies on the pressure at which the gas is delivered (and thus how much propane is present), but it’s around 2516 BTUs of heat. We can make an educated guess at an answer to your query based on that information.
As you’ll see in the constants I’ll provide, we can easily convert between thousands of BTUs and cubic feet of propane.
Now, simplifying because other variables such as ambient air temperature and burner temperatures do make a difference in narrative, metric combustion, let’s go through the following:
Because burning propane gas necessitates combining the propane with oxygen (in the combustion air given) within a range in which the gas will burn, there is no single “right” answer.
To get propane gas to burn, we need to mix it with the correct amount of combustion air. In normal air, we require a propane-air mixture of 2.15 percent to 9.6 percent propane (at sea level). Propane will not burn at other gas-to-air ratios.
The lower (leaner) level of 2.15 percent propane in air means that there will be 2.15 cubic feet of propane and 97.85 cubic feet of air in 100 cubic feet of gas-air mix.
The higher (richer) level of 9.6% propane in air means that in 100 cubic feet of gas-air mix, 9.6 cubic feet of propane and 90.4 cubic feet of air will be present.
Propane creates CO2 and water vapor when burned perfectly. When propane + oxygen is burned, or C3H8 (g) + 5O2 (g), the following is produced: 3CO2 (g) + 4H2O (g) + energy, or, to put it another way: carbon dioxide + water + energy = propane + oxygen
When 100 cu.ft. of gas-air mixture is burned, around 100 cu.ft. of CO2 and water are produced in complete combustion, together with the remaining unburned or unmodified constituents of that same air (principally nitrogen and oxygen). Of course, you can return to your one cubic foot by dividing by 100. To make writing easier, I utilized 100 cubic feet.
For further information on total combustion of fossil fuels, see COMPLETE COMBUSTION, STOICHIOMETRIC.
GAS BTUH, CUBIC FEET & ENERGY provides information on the energy contained in fuel gases such as LP and natural gas.
For further information on the composition of air, particularly combustion air, see CONCENTRATIONS of GASES in AIR.
Reply:
HEATING OIL EXPOSURE HAZARDS, LIMITS contains health effects, exposure limits, and MSDS data for heating oil, which is practically the same as diesel fuel. Because both Benzene and Kerosene are likely to be present at the same time, an MSDS will normally list exposure limits for both, as shown in the following excerpt from Irving Oil’s Kerosene MSDS sheet (reference below):
Reply: an electric water heater does not naturally produce methane gas but there can be other methane gas sources in a building water supply and other odor sources in a water heater or in water supply
An experienced onsite inspection frequently uncovers additional indicators that aid in precisely diagnosing a problem with the water heater or gas piping in the building, but none of these should include methane generated into the water heater tank interior from the appliance or its fuel piping. Furthermore, simply heating water does not result in the production of methane gas.
Methane gas is not produced by an electric or oil-fired water heater (CH4). A gas-fired water heater does, in fact, use a fuel gas including methane and an odorant. A gas-fired water heater, on the other hand, could leak LP or natural gas into the air, but because traditional water heaters don’t have under-water gas piping, I doubt the fuel gas would leak directly into the water supply or hot water tank from the heater or its gas piping.
How much water is produced when propane is burned?
During the winter, moisture buildup can be a major issue in small areas.
Water from cooking, baths, and breathing can build up and condense on cold walls and windows if there isn’t enough ventilation.
Moisture can lead to mold growth in extreme circumstances.
For every pound of propane burnt, an unvented or “vent-free” propane equipment such as a catalytic heater, “blue flame” burner, or certain quick water heaters adds 1.6 pounds of moisture into your room.
Is water vapor produced when propane is burned?
According to the US Energy Information Administration, propane occurs naturally alongside other petrochemicals and is isolated from natural gas or crude oil during the refining process. Powering car fleets and agricultural equipment, as well as heating the air in hot air balloons and drying crop harvests, are just a few of its many applications. Cooking, water, and interior heating are the most common applications in dwellings. Propane combustion, contrary to popular belief, produces water vapor as a consequence of basic chemical processes.
What is the byproduct of propane combustion?
When propane is completely burned, carbon dioxide and water vapour are produced. When there isn’t enough oxygen to completely burn the propane, carbon monoxide is produced as a by-product of combustion.
When propane-powered equipment is utilized in confined, poorly ventilated locations, carbon monoxide and carbon dioxide constitute risks. Overexposure to carbon monoxide and carbon dioxide causes headaches, tiredness, dizziness, and nausea. Carbon monoxide is a poisonous gas that prevents red blood cells from transporting oxygen. Carbon monoxide poisoning (concentrations greater than 4,000 parts per million (ppm)) can cause coma or death.
Exposure to extremely high amounts (over 100,000 ppm) of carbon dioxide, which is an asphyxiant gas, can result in death. In most workplace conditions, such life-threatening concentrations are quite rare to occur. Headaches, weariness, and dizziness, on the other hand, may indicate that there is insufficient ventilation in the workplace. As carbon dioxide levels rise above 800 to 1,000 ppm, the frequency of complaints of these symptoms rises.
Is water produced when gas is burned?
Due to the significant water requirements of production, including oil and gas well drilling, waterflooding, and hydraulic fracturing; processing, including compression and transportation; refining, including steam production for process heat; and utilization, including cooling water in power plants, hydrocarbon fuel production and utilization are widely considered to be water intensive processes. As people become more conscious of the interconnectedness of energy and water, more research into the energy-water nexus is being done. Water requirements for oil, gas, and coal production have been estimated through life cycle assessments (LCAs) and other research initiatives, with a focus on water withdrawal and consumption at each stage of the fuel’s life cycle. Water consumption has been calculated at each stage of conventional and shale oil and gas production, including consumption from well drilling, cementing, fracturing, gas processing, and transportation, as well as water savings from flowback water recycling and captured generated water. For LCAs, the water sources and sinks during the generation of hydrocarbon fuels are often well described. However, a vital feature of combustion is frequently overlooked: water generation. The oxidation of hydrogen in hydrocarbon fuels produces water, which is then added to the hydrologic cycle and atmospheric water storage. Hydrocarbon fuel combustion LCA frameworks often report on greenhouse gas emissions and other environmental consequences, but not on water created. The goal of this study is to learn more about how much water is produced annually as a result of hydrocarbon burning around the world. This water may be produced on the same site as the fuel, but it is more likely to be distributed and/or far away from the fuel production site, therefore not directly offsetting the water intensity of fuel production. As a result, understanding the magnitude of water production is critical from the perspective of atmospheric stores, which influence climate and weather, as well as assessing the potential for combustion water harvesting, which, while not widely implemented at the moment, has the potential to offset the water intensity of fuel production. While the study’s conclusions cannot be used to determine the technoeconomic feasibility of water harvesting, they can be used to inform such investigations.
How much water is created when natural gas is burned?
Two water molecules are usually given off as steam or water vapor during the reaction, and one molecule of methane (the referred to above means it is in gaseous form) reacts with two oxygen molecules to form a carbon dioxide molecule, and one molecule of methane (the referred to above means it is in gaseous form) reacts with two oxygen molecules to form a carbon dioxide molecule, and one molecule of methane (the referred to above means it is in gase
Natural gas is the most environmentally friendly fossil fuel. The other fossil fuels, coal and oil, are more chemically complex than natural gas and generate a variety of potentially dangerous air pollutants when combusted. Only carbon dioxide and water are released when methane is burned. Natural gas combustion produces less byproducts than other fossil fuels because it is mainly methane.
Because this is a chemical reaction, the amount of water created when methane is burned can also be measured.
The method is described as follows by the US Department of Energy:
When one molecule of methane is burned, two molecules of water vapor are produced.
When moles are translated to pound/mole, we see that every pound of methane fuel burned creates 2.25 pound of water vapor, which accounts for nearly 12% of the overall exhaust weight.
How much water is created by natural gas combustion relative to the amount of water required to develop it?
Given what we know about the chemistry involved, that’s a rather simple calculation.
As previously stated, a typical natural gas well will require five million gallons of water to develop.
If we estimate that 80% of it stays underground, we’re talking about four million gallons out of the water cycle.
As seen in the following Penn State chart (keeping in mind that the curves are improving with time with greater technology), that same well may generate up to two billion cubic feet of gas in ten years:
When it comes to propane and water, what is the mole ratio?
This means that the propane reacts with oxygen gas (O2) to produce carbon dioxide (CO2) and water (H2O), resulting in the imbalanced equation:
We must now balance this equation to determine the mole ratio for the reactant and product in question (i.e. propane and water)
If we have an even number of atoms, I usually start with carbon and hydrogen atoms to balance combustion reactions:
We multiply the pairs of hydrogen in water by four to produce eight hydrogens on the product side.
On the product side, we now sum up our oxygen atoms; it appears that we have a total of 10, making the next step simple!
The ratio of products to reactants is determined by a balanced equation; for every mole of propane, we obtain 4 moles of water. As a result, the answer will be our propane moles multiplied by four.
