It also contains hydrogen sulfide and helium in a very little amount. Come test out some of the products still in development and let us know what you think! Some of our partners may process your data as a part of their legitimate business interest without asking for consent. 1228 0 obj <>stream Google use cookies for serving our ads and handling visitor statistics. Choose whether you want to convert to heating value or to mass/volume, and then choose the fuel type. This is a useful quantity, commonly used to represent the energy density of a fuel, or the thermal energy that can be obtained from a fuel. Crude oil, gasoline, heating oil, diesel, propane, and other liquids including biofuels and natural gas liquids. To calculate HHV, start with the LHV and add on the latent heat of vaporization for any water vapor produced during combustion: 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. Heating value is one of the key calculations in energy industry. We don't save this data. To calculate the heat value of natural gas, you need to know the composition of the gas. While Excel requires manual data entry of the sample composition, Openlab Chemstation Intelligent Report can automate the calculation of Heating value in just a few clicks.The calorific values come in different terms, such as superior or inferior, and different units of measurement so one should not be confused when referencing the heating value of each individual compound. 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 We don't save this data. The Net Calorific Value is called also: heating value LHV, Net Calorific ValueNCV orlower calorific valueLCV. For example, in Hungary, the heat value of natural gas has an average of 34.12 MJ/M3. These applications will - due to browser restrictions - send data between your browser and our server. The heating value of a fuel is the amount of heat released during its combustion. fuels for heating your homes on an equal basis. The HHV takes into account the latent heat of vaporization of water in the products of combustion, while the LHV does not. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! The lower heating value (LHV) or higher heating value (HHV) of a gas is an important consideration when selecting a gas engine or CHP plant. 2023 - Know How Community. The contents of this course are as follows: . Short, timely articles with graphics on energy, facts, issues, and trends. Cookies are only used in the browser to improve user experience. 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! data. This can be expressed in British thermal units (BTUs) or in calories. Barrels or gallons for liquid petroleum fuels (such as gasoline, diesel fuel, and jet fuel) and biofuels (ethanol and biodiesel), 1 barrel (b) of crude oil or petroleum products = 42 U.S. gallons, 1 barrel of (U.S.) dry measure = 3.29122 bushels or 4.2104 cubic feet, 1 barrel (42 gallons) of crude oil produced in the United States =, 1 gallon of finished motor gasoline (containing about 10% fuel ethanol by volume) =, 1 gallon of diesel fuel or heating oil (with sulfur content less than 15 parts per million) =, 1 gallon of heating oil (with sulfur content at 15 to 500 parts per million) =, 1 short ton (2,000 pounds) of coal (consumed by the electric power sector) =, 1.039 million Btu per thousand cubic feet. The ideal gas mixture model used here cannot calculate this contribution directly. 1 BTU = 1,055 joules, 252 calories, 0.293 watt-hours, or the energy released by burning one match. One thousand cubic feet (Mcf) of natural gas equals 1.037 MMBtu, or 10.37 therms. We can calculate the heating value . Hence, when performing a cost benefit analysis for . The variation in quality may give heating values within a range 5 -10% higher and lower than the given value. Volumetric Heating Values are based on standard temperatures and pressure of dry gas - 60. 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. FERC's regulations that included the thermal efficiency standard stated that "energy input" in the form of natural gas and oil "is to be measured by the lower heating value of the natural gas or oil." See 18 CFR 292.202(m). Heating value is a quantitative measure of heat content of a natural gas. The heating value of natural gas is a measure of the amount of heat that is released when the gas is burned. 2 It applies to all common types of utility gaseous fuels, for example, dry natural gas, reformed gas, oil gas (both high and low Btu), propane-air, carbureted water gas, coke . The heating value of natural gas is the amount of heat released when the gas is burned. The calculation is demonstrated using both Excel and Openlab Chemstation Intelligent Reporting. The heat content of natural gas may vary by location and by . You can use this calculator to obtain the heating value of a given mass or volume of hydrogen or other fuels, or to calculate the mass or volume given a certain heating value. 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. Hydrogen = 30% We need to find ways to generate energy without releasing these harmful gases into the atmosphere. Copyright 2022 MET.com - All rights reserved. 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). How Do You Calculate the Heat Value of Natural Gas? Design, CMS, Hosting & Web Development :: ePublishing. The heating value of natural gas is the amount of heat released when the gas is burned. The heat content of natural gas might be different in various countries. Once you have these numbers, calculating BTUs is relatively simple: When applied to fuel, it measures the amount of heat that is released when the fuel is burned. How do I compare the cost of heating fuels? Use our online Natural Gas Calorific Value Calculator for SI unit or field unit. Maps, tools, and resources related to energy disruptions and infrastructure. 1 barrel of residual fuel oil = 6,287,000 Btu. this website, certain cookies have already been set, which you may delete and In thermodynamics, the term standard heat of combustion corresponds to Gross heating value. 1 Btu (IT)/lb = 2.3278 MJ/t = 2327.8 J/kg = 0.55598 kcal/kg = 0.000646 kWh/kg. The heating value of a sample of natural gas is very easy to determine if you have the right equipment and standards in place. Some of our calculators and applications let you save application data to your local computer. qs = Heat of combustion at constant volume (kJ/kg). 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 . We'll assume you're ok with this, but you can opt-out if you wish. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Also the solid fuels will have a similar quality variation for the different classes of fuel. There are two types of BTUs net and gross. However, more energy can be extracted from the mixture if this water is condensed. ``l 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. Reports requested by congress or otherwise deemed important. We and our partners use cookies to Store and/or access information on a device. Price of 1 m3 natural gas = volume (m3) x heat value (MJ/m3) x price (Currency/MJ) x VAT. The problem is that burning fossil fuels also releases harmful gases into the atmosphere, such as carbon dioxide and sulphur dioxide. The calorific value of a fuel is the amount of heat that is released when the fuel is burned. %PDF-1.5 % Ash also reduces the heating value because it does not contribute to combustion and actually absorbs some heat during combustion. You can target the Engineering ToolBox by using AdWords Managed Placements. When liquid water is the product, it is called the higher (or gross) heating value (HHV). Publisher - Always Right Answers To Community, The heating value of a fuel is the amount of heat released when the fuel is burned. It is approximately the energy needed to heat one pound of water by 1 degree Fahrenheit. where: AddThis use cookies for handling links to social media. These values can be found in tables provided by most manufacturers. Tools to customize searches, view specific data sets, study detailed documentation, and access time-series data. block. m~fQ[*&Jkaw-]z|O.T~J|2Sp:&+/ kWsN@M7hChO1ONqM+qK5sa9_vbz8D){w3bUz+Z! 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. The calorific value is the total energy released as heat when a substance undergoes complete combustion with oxygen under standard conditions.The chemical reaction is typically a hydrocarbon or other . State energy information, including overviews, rankings, data, and analyses. How to Calculate Heating Value of Natural Gas, Infrared heaters energy use (costs, efficiency, W/sq. This website requires certain cookies to work and uses other cookies to help you have the best experience. When water vapor is the product, it is called the lower (or net) heating value (LHV). 1203 0 obj <> endobj 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. The HHV is higher than the LHV because it takes into account the latent heat of vaporization of water. The British Thermal Unit, or BTU, is an energy unit. By visiting this website, certain cookies have already been set, which you may delete and block. The net heating value is an important factor in determining the efficiency of a boiler or furnace. Heating value is one of the key calculations in energy industry. When choosing between different types of fuels, its important to know which one is being referred to. Raw pasta: A new way to enjoy your favorite food? We don't collect information from our users. If there's a transition from ice to water, we're considering the latent heat of fusion, whereas for the phase change from a liquid into steam, it's the latent heat of vaporization. The most common type of natural gas used in North America has a heat value of around 40 MJ/m. Therefore, 100 cubic feet (Ccf) of natural gas equals 103,700 Btu, or 1.037 therms. Calorific Value of Natural Gas (MJ/m3 and BTU/SCF). If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. For most practical purposes, however, either value can be used to compare different fuels. Doing the math give us these results: 1218 0 obj <>/Filter/FlateDecode/ID[<8B176F5595F3534592C77465809F5513><7ECE73F70DDBF2499313D7D7D6226EFA>]/Index[1203 26]/Info 1202 0 R/Length 79/Prev 190049/Root 1204 0 R/Size 1229/Type/XRef/W[1 2 1]>>stream Btu = British thermal units; scf = standard cubic feet. all the combustion products remain in gaseous state but the water vapor produced during the combustion is condensed. Financial market analysis and financial data for major energy companies. The higher the heating value, the more energy the gas contains. You have a natural gas furnace in your home that used 67,000 cubic feet of natural gas for heating last winter. 1.4.2 Firing Practices3-5 There are three major types of boilers used for natural gas combustion in commercial, industrial, and utility applications . PEC8J366 NBS Referencebooknottobe 1 library, TECHNICALNOTE 299 CalculationoftheHeatingValue ofaSampleofHighPurityMethane forUseasaReferenceMaterial GeorgeT.Armstrong 4 Q Z /***"'. 1 gallon of heating oil (with sulfur content at 15 to 500 parts per million) = 138,500 Btu. Natural gas mostly contains methane (91.3%), ethane (5%), propane (1.8%), butane (1%), nitrogen and carbon dioxide. The components of natural gas determine the heat value of this fossil fuel. NationalBureauofStandards Ubrar Admin.Bldg. !(b2fc5jQ(&+ NPYY4Wn[jWt*575,~$s]chB=+]u2k^|6GQ'"ozN;pFa^sZ)6PHnTIj|P+gqAWl74$ &7}QUesvjvV,J^cri-kIh,Ic4j-4~~QZd #8W:=@CkCtU>7"}2SOft[_mtE";QN5sjR7g<8. A British thermal unit (Btu) is a measure of the heat content of fuels or energy sources. {OZN%}k:_M9d>Ij5..N}'8J*GII/?M'/:=-}\^%=} This video provides a guideline on How To Calculate Heating Value of Natural Gas with some commonly found compounds. Natural gas has a high heating value, which makes it an efficient fuel for home heating and other uses. The average gross heating value of natural gas is approximately 1,020 British thermal units per standard cubic foot (Btu/scf), usually varying from 950 to 1,050 Btu/scf. You can then use a simple formula to calculate the heating value. The GHV takes into account all of the heat released, including the latent heat of vaporization from water in the products of combustion. Welcome to the Hydrogen Analysis Resource Center. Physical units are measures of distances, areas, volumes, heights, weights, mass, force, and energy. Most people are familiar with the term BTU, but fewer know how to calculate the heating value of fuel. What is the Heating Value of Natural Gas? 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. 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.. [5] For solid fuels, the heating values in units of Btu/lb are converted from the heating values in units of Btu/ton. 2023 - Know How Community. Biodiesel, renewable diesel, and other biofuels. HHV and LHV are two different ways of measuring the energy content in a given quantity of fuel. The gross BTU figure represents the total heat released from burning a given type of fuel including any latent (hidden) heat due to vaporization. Raw Shrimp: What Are They, and What Does It Mean? Coal characteristics assumed by GREET for electric power production. This website requires certain cookies to work and uses other cookies to For most fuels, NHV will be about 2-5% lower than GHV. You can use this calculator to obtain the heating value of a given mass or volume of hydrogen or other fuels, or to calculate the mass or volume given a certain heating value. We knew from the outset that Fallout 76 was going to be the centerpiece of Bethesdas big show. One calorie is also equal to about 4,184 joules. Your neighbor has a furnace that burns heating oil that used 500 gallons of heating oil last winter. LHV(MJ/kg) = -428 + 3528*C + 2240*H 6320*O [1] Some popular units for comparing energy include British thermal units (Btu), barrels of oil equivalent, metric tons of oil equivalent, metric tons of coal equivalent, and terajoules. Comprehensive data summaries, comparisons, analysis, and projections integrated across all energy sources. &1u1D 1.4.2 Firing Practices3-5 There are three major types of boilers used for natural gas combustion in commercial, industrial, 1 short ton (2,000 pounds) of coal (consumed by the electric power sector) = 18,934,000 Btu. Manage Settings How to Make the Perfect Clove of Garlic:, This website uses cookies to improve your experience. Has additive manufacturing had any impact on your business? The LHV, or lower heating value, takes into account the fact that some of the heat from combustion is used to vaporize water in the fuel. (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.). 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. We don't collect information from our users. where: L L L is the latent heat. Does EIA publish energy consumption and price data for cities, counties, or by zip code? Coal characteristics assumed by GREET for hydrogen and Fischer-Tropsch diesel production. Btu/gal and the corresponding fuel density values. J1J!cs(}K51pJ4+FAb@y(LkPo)Yl CZ"*`,. 0 Copyright 2023. @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 Subscribe to feeds for updates on EIA products including Today in Energy and What's New. If you do not agree to the use of cookies, you should not navigate 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). 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). What is the heat value of natural gas? 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). As time goes on, people will start to recognize that the heating value of natural gas is decreasing. The energy that is released from natural gas can be used to heat homes, power businesses and generate electricity. 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. 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. 4, Add all of the products together to find the total heating value of natural gas as 876 + 108 + 38 + 100 = 1120 Btu/scf. hk7J~,{wak3HjV. The gross heating value (GHV) is the amount of heat released by a fuel when it burns. Energy-Related Carbon Dioxide Emissions, Energy-Related Carbon Dioxide Emissions at the State Level, through 2018, Monthly Crude Oil and Natural Gas Production, Annual Solar Photovoltaic Module Shipments Report, Midwest and Rocky Mountain Transportation Fuels Markets, East Coast and Gulf Coast Transportation Fuels Markets. Compressibility Factor Calculator for Natural Gas. The heating value of the mixture Hm is defined as (2.2.13) where Nc = the number of components yi = the mole fraction of component i Hi = the heating value of component i What is the heat value of natural gas? Natural gas is composed of methane, which is a molecule that contains carbon and hydrogen atoms. All Rights Reserved BNP Media. Subscribe our newsletter to stay updated. By closing this message or continuing to use our site, you agree to the use of cookies. The. Is the heating value of natural gas decreasing? These applications will - due to browser restrictions - send data between your browser and our server. 3. Uranium fuel, nuclear reactors, generation, spent fuel. Because energy used in different countries comes from different places, Btu content of fuels varies slightly from country to country. the standard to natural gas and oil. We'll assume you're ok with this, but you can opt-out if you wish. Copyright 2022MET.com - All rights reserved. where C, H and O represent carbon, hydrogen and oxygen respectively. The lower heating value (also known as net calorific value) of a fuel is defined as the amount of heat released by combusting a specified quantity (initially at 25C) and returning the temperature of the combustion products to 150C, which assumes the latent heat of vaporization of water in the reaction products is not recovered. You can target the Engineering ToolBox by using AdWords Managed Placements. BTU is often used as a point of reference for comparing . As stated above, the heating value increases approximately 750 Btu for each carbon added beyond methane. To calculate the HHV or LHV of a fuel, we need to know its chemical composition. CO2 + 2H2 O LHV = H reax at 298.15 K 1) Hcomb = Hrx = Hf of CO2 + 2Hf of H2O Hf . Moisture reduces the heating value because it takes up space in the molecule that could otherwise be used for combustible material. This means that each fuel will have a different calorific value. uf+}sBC]:QxwErX=Mh?5Gw>Vp+`}y}@i&-m7wvltY`Wol#5{{,eFWX.+8t2VpP/}ap^O^xW,X1;`8Emau`Hk6@6Q%-9tz! You need to know or convert the unit cost of electricity by kilowatt-hour (kWh). For example, even tap water is colder in winter, so it takes more time to boil it. 365 X .4105/.58 X $1.09 (the cost of natural gas on the Energy Label) = $282. Therefore, natural gas is an extremely flammable gas, which is odourless and colourless too. 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 heat value of natural gas depends on how effective the thermal energy coming from the natural gas is. Our Heating Cost Calculator uses THERMS to estimate the cost of heating with natural gas. Then enter the value you want to convert and its units, and clickConvertto initiate the conversion. The heat value of natural gas varies depending on the source, but is typically between 35 and 50 MJ/m. The heating values in units of MJ/kg, are converted from the heating values in units of Btu/lb. Fuel Gases - Heating Values Combustion heat values for gases like acetylene, blast furnace gas, ethane, biogas and more - Gross and Net values. In the case of natural gas the ratio of HHV to LHV is approximately 1.108:1. By browsing this site, you approve cookies being used and stored on your computer/device. ; Finally, all you need to do is sum up all heat values to calculate the energy needed to heat H 2 O. When it comes to understanding your energy consumption, the first step is knowing how to calculate heating value of natural gas. Net heating value (NHV) is a measure of a fuels ability to produce heat. Subscribe our newsletter to stay updated. The Heating Value of Natural Gas varies depending on the composition of the gas, but it is typically between 35 and 55 MJ/kg. The heat content of natural gas is not related to the colour of the flame in the stove, nor to its colour or price. 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. The higher the Heating Value, the more heat that can be released from a given quantity of natural gas. 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. 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. Sponsored Links Fuel gases gross and net heating values: 1 Btu/ft3= 8.9 kcal/m3= 3.73x104J/m3 Example: A natural gas water heater with an EF of .58 and a fuel cost of $0.00000109/therm. hb```6 ea.O+chXMY>vg\A> e2L4/O:4& The higher the heating value, the more heat that is released. calculate and use these natural gas properties is crucial to reservoir, production, and natural gas process engineering. The Heating Value of Natural Gas is a measure of the amount of heat that can be released from a given quantity of natural 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% The average gross heating value of natural gas is approximately 1,020 British thermal units per standard cubic foot (Btu/scf), usually varying from 950 to 1,050 Btu/scf. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'engineeringunits_com-large-mobile-banner-1','ezslot_4',126,'0','0'])};__ez_fad_position('div-gpt-ad-engineeringunits_com-large-mobile-banner-1-0');The Gross calorific Value is the amount of heat produced by a complete combustion of specified unit of quantity of fuel at constant pressure and all the products of the combustion are cooled down to the initial temperature before the reaction. N&a The higher the calorific value, the more heat that is released. 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. However, since every gas company uses their own units of calculating your cost of gas, it is important that you provide the correct unit cost, to get an accurate estimate. U.S. Visit our privacy The more carbon a fuel has, the more heat it will release when combusted. All Rights Reserved. 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 to calculate the btu at one of the base conditions below, multiply by factor desired base factor 14.735-60-dry 1.o177 14.73-60-saturated 0.9996 This video provides a guideline on How To Calculate Heating Value of Natural Gas with some commonly found compounds. The higher the heating value, the more energy that is available for use. It is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. This is because carbon-carbon bonds are very stable and require a lot of energy to break them apart. Reserves, production, prices, employment and productivity, distribution, stocks, imports and exports. hv = Heating value (kJ/kg) The heating value of a gas can be estimated from the composition of the gas and heating values associated with each component of the gas. 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 HHV, or higher heating value, refers to the amount of heat released when a fuel is burned completely and the resulting gases are allowed to cool to room temperature. Fuels with a high calorific value are said to be high-energy fuels. If you want read more standardized definition of the two above terminology Net calorific Value and Gross Calorific Value you can check the iso standards 6976. Read More. All Rights Reserved. Notes: ---------------------------------------------------------------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
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