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Exploration and reserves, storage, imports and exports, production, prices, sales. This results in a lower number than HHV. The heat value of natural gas varies depending on the source, but is typically between 35 and 50 MJ/m. Net heating value (NHV) is a measure of a fuels ability to produce heat. For just one phase, you'll have a single number, but otherwise, there's going to . In thermodynamics, the term standard heat of combustion corresponds to Gross heating value. The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it.. When calculating the heating value of a fuel, the amount of heat released by combustion is divided by the total number of moles of oxygen required for combustion. Coal characteristics assumed by GREET for hydrogen and Fischer-Tropsch diesel production. Heres a quick guide on how to calculate heating value of natural gas so that you can be more informed about your own energy use. The Hcomb of one mole of methane at 298.15 K is the heat of reaction between CH4 and O2 to form CO2 and H2O, according to Equation 1.Table 1 shows values of Hformation of several natural gas reactants and products.Equations 2 and 3 show the calculation for Hreax of methane from these values.CH4 + 2O2 . where C, H and O represent carbon, hydrogen and oxygen respectively. Gas engines efficiency is typically quoted based upon the LHV of the gas. Generally speaking, natural gas is composed of the following components which are typical but can vary greatly: Ethane 5% Nitrogen 2.5% Carbon Dioxide 1% Propane 1% Isobutane 0.3% n-Butane 0.3% Neopentane 0.1% All Rights Reserved BNP Media. Publisher - Always Right Answers To Community. We would find that its specific gravity is 0.504 and its energy value per gallon is 91,000BTUs/gal . Net BTUs take into account the fact that some of the heat from burning fuel is used to vaporize water in the fuel itself (for example, in gasoline). When we burn fossil fuels in power stations or in our homes, this energy is released as heat. Design, CMS, Hosting & Web Development :: ePublishing. The British Thermal Unit, or BTU, is an energy unit. When water vapor is the product, it is called the lower (or net) heating value (LHV). Natural gas is composed of methane, which is a molecule that contains carbon and hydrogen atoms. We don't collect information from our users. These values can be found in tables provided by most manufacturers. How to Make the Perfect Clove of Garlic:, This website uses cookies to improve your experience. We need to find ways to generate energy without releasing these harmful gases into the atmosphere. hv = Heating value (kJ/kg) Heating value is one of the key calculations in energy industry. Please read AddThis Privacy for more information. {OZN%}k:_M9d>Ij5..N}'8J*GII/?M'/:=-}\^%=} Also the solid fuels will have a similar quality variation for the different classes of fuel. The net or lower heating value is obtained by subtracting the latent heat of vaporization of the water vapor formed by the combustion from the gross or higher heating value. Once you have done this for all of the elements, you can add up all of the results to get the total heating value for the fuel. You need to know or convert the unit cost of electricity by kilowatt-hour (kWh). How do I compare the cost of heating fuels? How to Calculate Bundle Price Best 4 Ways to calculate, Build Your Spiritual Growth Through a Relationship with God, Calculating Crit Values for Genshin Impact Characters, How to Find Amazon Price Glitches Easy 7 Steps to Go, How to Calculate Price and Quantity Impact 4 Best Methods, Waterford Crystal Nativity Set: How to Make a Unique. Estimate the heating cost in your state, for Oil, Natural Gas, Propane, and Electricity, using a Hot Air Furnace, Boiler (standard & condensing), Air Source Clarify math tasks You can find the answer to your question in just 3 seconds with our new search engine. @7HyJ=E"a;C,5zJb]TkGE}t7~woo~sn|o~}yw>{{?|/_?}!as/7_}rUw_n|5M?K[;~C=~'qn!nz_{}{?zqv6QquqCs{o_yqU?Ly~/iQ/vo{}r^'7ooiO0x?z}?_o^%?~&/d:}AHirZ?lgg;SJIzhm~hvAh p[?cw8uS>eDcao FgJ i|.P5a51:B[U}[Bw!7;rAUD#hfEa%1M>13f6~U:H![#yN"sHjnlwIL} y; :kz-$&MjXEOU[}!"mn_pnw~?A{Jwj~I,nA;4MIC"F;[k`x7oA+Wok2O$p1R.^3Xs,Elf',^_o>eZs}p;"NZ(mTiZoQ9MwYo&_JaF[tNu-\E{mhIt PhY}4hNg3p(avN6RbPe /2GAga When liquid water is the product, it is called the higher (or gross) heating value (HHV). You can target the Engineering ToolBox by using AdWords Managed Placements. How the calorific value (CV) of gas is calculated and how we determine the amount of energy transported by shippers and suppliers, which is used to bill gas consumers. It is experimentally measured using an apparatus called a bomb calorimeter. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Because energy used in different countries comes from different places, Btu content of fuels varies slightly from country to country. The HHV takes into account the latent heat of vaporization of water in the products of combustion, while the LHV does not. qs = Heat of combustion at constant volume (kJ/kg). As explained by FERC 3. This calculator is designed to calculate the following for natural gas and other combustible gases : The Gross Calorific Value is called also: Higher Calorific Value HCV, Gross Calorific Value GCV, Higher Heating Value HHV. Includes hydropower, solar, wind, geothermal, biomass and ethanol. For example, if youre calculating HHV for natural gas with an LHV of 39 MJ/kg and 5% water content, you would get: The Lower Heating Value (LHV) is the amount of heat released by a unit of fuel when it is burned at a constant pressure and temperature. 1 short ton (2,000 pounds) of coal (consumed by the electric power sector) = 18,934,000 Btu. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. The heat content of natural gas may vary by location and by . See Heat of combustion for examples of calculation of gross heating values from standard heat of formation of substances. [4] The heating values in units of MJ/kg, are converted from the heating values in units of Btu/lb. (Note that many factors affect the amount of energy a household actually uses for heating, and fuel heat content may vary among locations and suppliers.). Please read AddThis Privacy for more information. Learn more or accept all cookies. Accept The heating values for gaseous fuels in units of Btu/lb are calculated based on the heating values in units of Btu/scf and the corresponding fuel density values. A megajoule per cubic meter (MJ/m) is a decimal multiple of a derived unit of specific energy, heating value, energy content, or heat of combustion per unit volume. Shortly: it shows how much energy (in megajoule) is released while combusting 1 cubic meter of natural gas. By visiting What is the Heat Value of 1 Cubic Meter of Natural Gas? This gives you the molar heat of combustion, which is then multiplied by the molar mass of the fuel to give you the heating value. The Net Calorific Value is called also: heating value LHV, Net Calorific ValueNCV orlower calorific valueLCV. You and your neighbor want to compare the price of the Natural gas is mostly methane (CH4), but it also contains small amounts of other gases like ethane (C2H6), propane (C3H8), butane (C4H10), and pentanes (C5H12). Some of our calculators and applications let you save application data to your local computer. Gasoline conversion calculator gallons Btu megajoules liters 1 gallon = 120,238 Btu ( based on U.S. finished motor gasoline [includes fuel ethanol content] consumption at 5.05 million Btu per barrel in 2021; preliminary) Diesel fuel and heating oil conversion calculator gallons Btu megajoules liters The heating value of a fuel is the heat of combustion (i.e., heat released during combustion) at the reference temperature, T ref = 25C, assuming complete combustion. Common Units Common units for heating value: 1 Btu/lb = 2326.1 J/kg = 0.55556 kcal/kg 1 J/kg = 0.00043 Btu/lb = 2.39x10-4kcal/kg 1 kcal/kg = 1.80 Btu/lb = 4187 J/kg Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! One calorie is also equal to about 4,184 joules. block. How to Calculate Heating Value of Natural Gas | Openlab Chemstation Intelligent Reporting, Find the composition of the natural gas by percentage, The typical composition of natural gas is approximately 85% methane, 10% ethane, 3% propane and 2% butane, Look up the heating value for each component in British Thermal Units per standard cubic foot (Btu/scf), The heating values for methane, ethane, propane and butane are respectively 1,031 Btu/scf, 1,075 Btu/scf, 1,265 Btu/sf and 2,488 Btu/sf, Multiply each components percentage by its heating value to find the total heating value of the natural gas sample, For example: 85% x 1,031 = 876 + 10% x 1,075 = 108 + 3% x 1 ,265 = 38 + 2% x 2 , 488 = 100 In order to calculate the heating value of fuel, you need to know the percentage of each element in the fuel by mass. Fuels are made up of different chemicals, and each fuel has a different chemical composition. Crude oil, gasoline, heating oil, diesel, propane, and other liquids including biofuels and natural gas liquids. To calculate the heat value of natural gas, you need to know the composition of the gas. The heating value of natural gas varies depending on the composition of the gas, but it typically ranges from 950 to 1,050 British Thermal Units (BTUs) per cubic foot. !.R5N4S* % This high energy content coupled with its clean burning nature makes natural gas an attractive choice as a boiler or furnace fuel. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. ; Finally, all you need to do is sum up all heat values to calculate the energy needed to heat H 2 O. help you have the best experience while on the site. Raw pasta: A new way to enjoy your favorite food? By visiting this website, certain cookies have already been set, which you may delete and block. Monthly and yearly energy forecasts, analysis of energy topics, financial analysis, congressional reports. However, the scale is not that wide: natural gas producers must meet a lot of quality criteria and parameters before exporting their product. To calculate the HHV or LHV of a fuel, we need to know its chemical composition. The HHV figure for liquid hydrogen in Btu/gal is based on personal communication with Ye Wu of Argonne National Laboratory. The gross BTU figure represents the total heat released from burning a given type of fuel including any latent (hidden) heat due to vaporization. Heating value is one of the key calculations in energy industry. Welcome to the Hydrogen Analysis Resource Center. Short, timely articles with graphics on energy, facts, issues, and trends. It depends on the country and the pipelines, so the value can differ from 34 to 52 MJ/m3 (950 to 1,050 BTU/SCF). there can be significant differences in heating value of natural gas based on geography, pipeline characteristics, time of year vitually all sales of natural gas both wholesale and . 1Data source: Monthly Energy Review, May 2022, U.S. Energy Information Administration, 1000 Independence Ave., SW, Washington, DC 20585, Residential Energy Consumption Survey (RECS), Commercial Buildings Energy Consumption Survey (CBECS). If you already know the HHV and composition of your fuel I would apply the following: LHV = HHV - Lv_H2O (H2O_content_w + 9*H_content_w) [MJ/kg] where Lv_H2O = 2.441 MJ/kg 9 is the amount of water. Energy & Financial Markets: What Drives Crude Oil Prices? These materials have been formed over millions of years from the remains of plants and animals, and they contain a lot of energy. KUZ TS The LHV can be calculated using the following formula: data. Therefore, natural gas is an extremely flammable gas, which is odourless and colourless too. Publisher - Always Right Answers To Community, The heating value of a fuel is the amount of heat released when the fuel is burned. For octane, the number of added carbon atoms beyond methane is 8 - 1 . Then enter the value you want to convert and its units, and clickConvertto initiate the conversion. calculate and use these natural gas properties is crucial to reservoir, production, and natural gas process engineering. Copyright 2022 MET.com - All rights reserved. 1 MJ/m3 = 26.83 BTU/SCF (British thermal unit / cubic foot). hbbd``b`$g !H0 [ D@}$)3018Y 0 $ Definition of Lower Heating Value (LHV) Although FERC regulations use lower heating value to measure a unit's energy input from natural gas and oil, the regulations do not specify a formula for calculating lower heating value. &1u1D Moisture reduces the heating value because it takes up space in the molecule that could otherwise be used for combustible material. For most practical purposes, however, either value can be used to compare different fuels. Subscribe to feeds for updates on EIA products including Today in Energy and What's New. The gross heating value (GHV) is the amount of heat released by a fuel when it burns. These applications will - due to browser restrictions - send data between your browser and our server. We can plug those numbers into this formula to calculate the LHV: Has additive manufacturing had any impact on your business? The most common fuels are fossil fuels, such as coal, oil and natural gas. Ash also reduces the heating value because it does not contribute to combustion and actually absorbs some heat during combustion. This value is the higher heating value (HHV). Tools to customize searches, view specific data sets, study detailed documentation, and access time-series data. All Rights Reserved. The heat value of natural gas depends on how effective the thermal energy coming from the natural gas is. What is the Heating Value of Natural Gas? The higher the calorific value, the more heat that is released. all the combustion products remain in gaseous state but the water vapor produced during the combustion is condensed. The higher the heating value, the more heat that is released. The heating value can be calculated using the following equation: hv = qp + qs - qw where: hv = Heating value (kJ/kg) qp = Heat of combustion at constant pressure (kJ/kg) qs = Heat of combustion at constant volume (kJ/kg) Find the gross or higher heating value of the fuel The higher heating value (also known gross calorific value or gross energy) of a fuel is defined as the amount of heat released by a specified quantity (initially at 25C) once it is combusted and the products have returned to a temperature of 25C, which takes into account the latent heat of vaporization of water in the combustion products. Visit our updated, Heat & Corrosion Resistant Materials / Composites, Commercial Heat Treat Capabilities Directory, Practical Heat Treating: Basic Principles. :M]on7qE The Heating Value also affects the price of natural gas. Doing the math give us these results: Example: A natural gas water heater with an EF of .58 and a fuel cost of $0.00000109/therm. It is typically expressed in terms of MJ/kg, or megajoules per kilogram. HHV = LHV + [water vapor] x 2,257 kJ/kg It is approximately the energy needed to heat one pound of water by 1 degree Fahrenheit. By closing this message or continuing to use our site, you agree to the use of cookies. Google use cookies for serving our ads and handling visitor statistics. The calculation is demonstrated using both Excel and Openlab Chemstation Intelligent Reporting. ---------------------------------------------------------------Public Function parameter_link() as string parameter_link = \"C:\\Users\\dell\\Desktop\\Calorific Values.txt\"End functionPublic Function getparameter(compound_name as string) as object Dim comp_name(11) as string ' Numbers of compounds comp_name(0) = \"Hexane\" comp_name(1) = \"Carbon dioxide\" comp_name(2) = \"i-Butane\" comp_name(3) = \"n-Butane\" comp_name(4) = \"i-Pentane\" comp_name(5) = \"n-Pentane\" comp_name(6) = \"Ethane\" comp_name(7) = \"Propane\" comp_name(8) = \"Oxygen\" comp_name(9) = \"Nitrogen\" comp_name(10) = \"Methane\" Dim i as integer For i = 1 to 11 ' Numbers of compounds Select case compound_name Case is = comp_name(i-1) getparameter = System.IO.File.ReadAllLines(parameter_link())(i) End select Next iEnd functionFunction CV_Superior(compound_name as string) as single CV_Superior = val(choose(2, split(getparameter(compound_name), \";\")))End functionFunction CV_Inferior(compound_name as string) as single CV_Inferior = val(choose(3, split(getparameter(compound_name), \";\")))End functionFunction MW(compound_name as string) as single MW = val(choose(4, split(getparameter(compound_name), \";\")))End function ----------------------------------------------------------------------------Learn more about Openlab Chemstation Intelligent Reporting herehttps://www.youtube.com/playlist?list=PLaYUUU64uRTm3O4AWpG1m7nvyMXqeuyQbUseful skills in GC Troubleshooting Serieshttps://www.youtube.com/playlist?list=PLaYUUU64uRTm3O4AWpG1m7nvyMXqeuyQbTips and Tricks for GC Operationhttps://www.youtube.com/playlist?list=PLaYUUU64uRTlMPElafU9KA08ciJ8qZQDj ----------------------------------------------------------------------------Subscribe to my channel to get the full access to my 8+ years of GC experiencehttps://bit.ly/3321KiEReach me at triplettt1719@gmail.com for private consultation ----------------------------------------------------------------------------Gears and Tools using:Openlab Chemstation version: C.01.10TubeBuddy for Keyword searching and SEOhttps://www.tubebuddy.com/learningbydoingwithpetertranBandicam and Bandicut for screen recorder and video edittinghttps://www.bandicam.com/QuietComfort 35 wireless headphones II (Bose) as Microphonehttps://amzn.to/2GirEaV Some of our partners may process your data as a part of their legitimate business interest without asking for consent. LHV(MJ/kg) = -428 + 3528*C + 2240*H 6320*O [1] Financial market analysis and financial data for major energy companies. When it comes to understanding your energy consumption, the first step is knowing how to calculate heating value of natural gas. The Btu content of each fuel provided below (except for crude oil) is the average heat content for fuels consumed in the United States. Lesson plans, science fair experiments, field trips, teacher guide, and career corner. As stated above, the heating value increases approximately 750 Btu for each carbon added beyond methane. This video provides a guideline on How To Calculate Heating Value of Natural Gas with some commonly found compounds. Hydrogen = 30% We knew from the outset that Fallout 76 was going to be the centerpiece of Bethesdas big show. For example, in Hungary, the heat value of natural gas has an average of 34.12 MJ/M3. N&a Cookies are only used in the browser to improve user experience. Not just the maintenance of heating systems, but thermal insulation is also an important factor to have a better heating efficiency. Carbon = 50% We and our partners use cookies to Store and/or access information on a device. Each week, the actual heating value of gas in each BTU area is measured by sampling the gas and analyzing it with a gas chromatograph (except in collection areas, as explained below). International energy information, including overviews, rankings, data, and analyses. Continue with Recommended Cookies, Use our online Natural Gas Calorific Value Calculator based on the ISO 6976 (2016) Natural gas Calculation of calorific values, density, relative density and Wobbe index from composition. all the combustion products remain in gaseous state including the water vapor produced during the combustion is condensed. Read More. where: L L L is the latent heat. For example, if your sample has 85% methane and 15% ethane, then its heat value would be approximately 1,030 BTUs per cubic foot (or 2,860 kilojoules per cubic meter). Greenhouse gas data, voluntary reporting, electric power plant emissions. The contents of this course are as follows: . How to Calculate Heating Value of Natural Gas, Infrared heaters energy use (costs, efficiency, W/sq. and cookie policy to learn more about the cookies we use and how we use your The Tool calculates the adjusted flow rate and corresponding heat content (Btu) value of landfill gas (LFG) after adjusting a wellfield to meet the inlet specifications for RNG treatment/processing technology. In the case of natural gas the ratio of HHV to LHV is approximately 1.108:1. What is the heat value of natural gas? Physical units are measures of distances, areas, volumes, heights, weights, mass, force, and energy. Cookies are only used in the browser to improve user experience. Maps, tools, and resources related to energy disruptions and infrastructure. By visiting this website, certain cookies have already been set, which you may delete and block. Is the heating value of natural gas decreasing? We use different physical units to measure different types of energy or fuels: To compare fuels with each other, we need to convert their measurements to the same units. As time goes on, people will start to recognize that the heating value of natural gas is decreasing. The formula is simple: Price of 1 m3 natural gas = volume (m3) x heat value (MJ/m3) x price (Currency/MJ) x VAT. U.S. Some of our calculators and applications let you save application data to your local computer. Only emails and answers are saved in our archive. ISO 6976 (1995) Natural gas - Calculation of calorific values, density, relative density and Wobbe index from composition You can compare the average of fuel prices over the winter (October through March) in dollars per million Btu by dividing the average of the monthly winter prices for natural gas and for heating oil per unit of the fuels by the Btu content of the fuels in million Btu per unit. Come test out some of the products still in development and let us know what you think! 1 gallon of heating oil (with sulfur content at 15 to 500 parts per million) = 138,500 Btu. Maps by energy source and topic, includes forecast maps. An example of data being processed may be a unique identifier stored in a cookie. When choosing between different types of fuels, its important to know which one is being referred to. The heat content of natural gas might be different in various countries. [6] Coal characteristics assumed by GREET for electric power production. The British Thermal Unit, or BTU, is a unit of measurement for heat energy. EIA's free and open data available as API, Excel add-in, bulk files, and widgets. Natural gas has a high heating value, which makes it an efficient fuel for heating homes and businesses. Does EIA have forecasts or projections for energy production, consumption, and prices for individual states? The heating value is the amount of heat released when a fuel is burned. 1.1 This practice covers procedures for calculating heating value, relative density, and compressibility factor at base conditions (14.696 psia and 60F (15.6C)) for natural gas mixtures from compositional analysis. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! 2023 - Know How Community. Btu/gal and the corresponding fuel density values. the amount of heat produced by combustion a unit quantity of a fuel, all products of the combustion are cooled down to the temperature before the combustion, the water vapor formed during combustion is condensed, subtracting the latent heat of vaporization of the water vapor formed by the combustion. H2 Tools is intended for public use. Natural gas mostly contains methane (91.3%), ethane (5%), propane (1.8%), butane (1%), nitrogen and carbon dioxide. Once you have these numbers, calculating BTUs is relatively simple: Methane is the main component of natural gas, and it has a high heating value about 50 MJ/kg. This video provides a guideline on How To Calculate Heating Value of Natural Gas with some commonly found compounds. Comprehensive data summaries, comparisons, analysis, and projections integrated across all energy sources. PEC8J366 NBS Referencebooknottobe 1 library, TECHNICALNOTE 299 CalculationoftheHeatingValue ofaSampleofHighPurityMethane forUseasaReferenceMaterial GeorgeT.Armstrong 4 Q Z /***"'. The net heating value accounts for this latent heat and therefore gives a more accurate picture of how much useful energy is actually produced by burning a given fuel. Then, you need to look up the heating values for each element on a chart and multiply them by the percentage of that element in the fuel. The heating value of natural gas is the amount of heat released when the gas is burned. The heat produced by the combustion of a fuel is called its heating value, which is equal to the value of Hcomb but of opposite sign. Fuels with a high calorific value are said to be high-energy fuels. How to Make the Perfect Clove of Garlic:, This website uses cookies to improve your experience. Copyright 2022MET.com - All rights reserved. AddThis use cookies for handling links to social media. By browsing this site, you approve cookies being used and stored on your computer/device. It is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. If your first bedroom is at least 120 square feet, you get to call your second bedroom a bedroom if it's at least 70 square feet with 7' on a side. Raw pasta: A new way to enjoy your favorite food? Does EIA publish energy consumption and price data for cities, counties, or by zip code? Choose whether you want to convert to heating value or to mass/volume, and then choose the fuel type. Btu = British thermal units; scf = standard cubic feet. Subscribe our newsletter to stay updated. hk7J~,{wak3HjV. T1 = Temperature of water before heating (C). By closing this message or continuing to use our site, you agree to the use of cookies. Oxygen = 20% It is the quantity of heat required to raise the temperature of one pound of liquid water by 1 degree Fahrenheit at the temperature that water has its greatest density (approximately 39 degrees Fahrenheit). Forms EIA uses to collect energy data including descriptions, links to survey instructions, and additional information. Coal characteristics assumed by GREET for electric power production. Required natural light and air: 8% of floor area of natural light, and 4% of floor area of air (operable window).Indiana Egress Window Code. The net or lower heating value is obtained by. The heating values in units of MJ/kg, are converted from the heating values in units of Btu/lb. LHV = 50.025 MJ/kg The LHV is calculated assuming that water remains in the gas phase. There are two types of heating values: the higher heating value (HHV) and the lower heating value (LHV). The HHV is higher than the LHV because it takes into account the latent heat of vaporization of water. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. This can be expressed in British thermal units (BTUs) or in calories. To calculate gross BTUs, simply multiply together the specific gravity and energy value figures without performing any further calculations.. 1 gallon of propane = 91,452 Btu. A tool called chromatograph is measuring the quality of the natural gas and is able to determine the exported fossil fuels components, therefore its heating value will also be known. For most fuels, NHV will be about 2-5% lower than GHV. How Do You Calculate the Heat Value of Natural Gas? The price is not set by the quantity of natural gas, but the quality and the heating value will determine how much an individual (or a country) will pay for this fuel. uf+}sBC]:QxwErX=Mh?5Gw>Vp+`}y}@i&-m7wvltY`Wol#5{{,eFWX.+8t2VpP/}ap^O^xW,X1;`8Emau`Hk6@6Q%-9tz! 1 barrel of residual fuel oil = 6,287,000 Btu. A British thermal unit (Btu) is a measure of the heat content of fuels or energy sources. Heating value is the number of British Thermal Units (BTUs) in one cubic foot of natural gas. AddThis use cookies for handling links to social media. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Mechanical Engineering Thermodynamics Lec 32, pt 3 of 3: Heating Values, Find the gross or higher heating value of the fuel, This is the amount of heat released when the water vapor in the combustion products is condensed to liquid form, Subtract the latent heat of vaporization of water from the gross heating value to find the net or lower heating value, This is the amount of heat released when there is no condensation of water vapor in the combustion products, Divide by 1000 to convert units from British thermal units per pound (Btu/lb) to kilocalories per gram (kcal/g). The higher the heating value, the more heat that is released. Therefore: Natural gas is a fossil fuel that is formed when layers of buried plants and animals are exposed to intense heat and pressure over millions of years. Compressibility Factor Calculator for Natural Gas. Other factors that can affect a fuels heating value include its moisture content and ash content.