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Here, we complete the coal quality modeling by mapping calorific values and the results of ultimate analysis. 2. Methodology. The calorific value can be considered a ratio scale attribute. For example, an increase by a factor of 2 in the calorific value will allow increasing to the same temperature a volume of water twice as large.
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Calculation Procedure. Since the elements of solid fuels can be bound in various ways, it is not possible to calculate exactly the Lower Calorific Value. Therefore an empirical …
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calorific value dry basis (GCV) and the element com-position (C,H,N,S and O). As for the GCV and the ele-ment analysis the value of the net calorific value on dry basis NCV was calculated. Table 1 summarizes the methodologies used and the main summary infor-mation of the analytic parameters measured in this study. The analyzed samples are ...
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International Journal of Coal Preparation and Utilization Latest Articles. Submit an article Journal homepage. 83 ... A crucial factor in determining coal's quality is its gross calorific value (GCV). GCV is generally determined experimentally using an adiabatic bomb calorimeter. But the laboratory measurement process is complicated, …
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Moisture content is an important parameter in coal analysis. It is needed for determining the calorific (heating) value and handling properties of a coal. The moisture value given for a proximate analysis is the moisture measured as mass lost from a sample under specified conditions after heating in a moisture oven to 104 to 110°C (ASTM …
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The following article will guide you about how to calculate the calorific value of fuels. Learn about:- 1. Meaning of Calorific Value of Fuels 2. Theoretical Determination of …
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A scan rate of 5°/min and range of 2θ = 5–90°, along with the ICDD PDF-2 database, were used to determine the main mineral composition. The C species content of the samples was measured using an X-ray photoelectron spectrometer (XPS). ... which is beneficial to the preparation of high-calorific value and high-energy density DAC …
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condensed. Fuels should be compared based on the net calorific value. The calorific value of coal varies considerably depending on the ash, moisture content and the type of coal while calorific value of fuel oils are much more consistent. The typical Gross Calorific Values of some of the commonly used liquid fuels are given below: 1. Fuels and ...
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This set of Engineering Chemistry Multiple Choice Questions & Answers (MCQs) focuses on "Determination of Calorific Value of Solid and Non-Volatile Liquid Fuels – 1". 1. What is the use of a bomb calorimeter? a) To calculate the calorific value of a volatile liquid. b) To calculate the calorific value of a gas.
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The results indicate that the calorific value of the charcoal dust briquette by using cow dung as binder was 3744.3 kcal/kg. It is observed that the calorific value of the briquettes made from charcoal dust and biomass combinations with cow dung as binder were varying between 3468.6 - 3744.3 kcal/kg.
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Abstract This paper deals with determination of the ethanol concentration and its heating value (calorific value in local distilled Ethiopian Areki, which is extracted from Maize, Dagussa (Sorghum) and Gibto (Lupin). The primary target of this paper is assessing the energy potential of some locally produced Ethiopian alcohols by identifying the major …
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The calorific value of fuel is the amount of heat produced by the complete combustion of 1 kg of fuel. Weight of fuel burnt = 4.5 kg. Heat produced by 4.5 kg of fuel = 180,000 kJ. Step 2: Finding the calorific value of the fuel. Calorific value = Amount of heat produced Weight of fuel burnt. Calorific value = 180000 kJ 4. 5 kg = 40, 000 kJ kg-1
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1 Scope. This European Standard specifies a method for the determination of the gross calorific value of a solid biofuel at constant volume and at the reference temperature 25 …
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A bomb calorimeter is used to determine the Higher Calorific Value of a coal sample. The mass of the sample is 1.08 g.The total equivalent mass of water is 1.82 kg.The increase in temperature after ignition is 6.7 K.1.7 g of water was found in the calorimeter after it had cooled. Calculate the Higher and Lower Calorific values.
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Calculation Procedure. Since the elements of solid fuels can be bound in various ways, it is not possible to calculate exactly the Lower Calorific Value. Therefore an empirical equation, developed by Boie [1] can be used instead: QL = 34.8c + 93.9h + 6.3n + 10.5s– 10.8o –2.5w (in MJ / kg fuel) (1) Note that, inorganic materials such as ash ...
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Q1 = Q2. m1 * CV = m2 * specific heat of water * ( T2-T1) For example, let us calculate specific heat of fuel. for 100 gm fuel and 2 kg water, temperature difference recorded is 5 degree. Calorific value of fuel = …
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Calorific Value. The calorific value of coal is measured for almost all coal samples. It is a measure of the heating ability of a coal and is needed to estimate the amount of coal needed to produce a desired amount of heat. Calorific values are also used to define coal rank in low- and medium-rank coals below the rank of medium-volatile ...
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The theoretical calculation of calorific value H of a substance, or heat of combustion, is determined via a process known as bomb calorimetry. This process relies on knowing …
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Measuring the calorific value accurately is crucial for various industries and research fields. By employing specialized methods such as bomb calorimetry, oxygen bomb, or DSC, …
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Two main values are used to calculate the calorific value: Gross Calorific Value (GCV) and Net Calorific Value (NCV). The Gross Calorific Value is the total heat produced …
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Bomb calorimeter is used to calculate calorific value. 1 g of fuel sample is burnt in the crucible by providing oxygen supply at a pressure of 20 kg/cm 2. The corresponding temperature change of the water in the device is observed, and the calorific value of the briquette sample is computed using energy balance. 2.2.6. Water boiling test
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Calorific Values 1 calories = 4.1868 Joules 1 BTU = 1055.06 Joules 1 BTU = 251.996 calories 1 BTU / lb = 2.326 Joules / gram 1.8 BTU / lb = 1.0 calories / gram The heat energy measured in a bomb calorim-eter may be expressed either as calories (cal), British thermal units (BTU) or Joules (J), with the Interna-tional Steam Table calorie as the ...
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Calorific Value is the heat produced on complete combustion of 1 kg of fuel. Calorific Value is mainly used to determine the efficiency of the fuels. Greater the calorific value, greater is the efficiency of the fuel and better the fuel. The amount of heat generated by different types of fuels varies, depending on the nature of the element and ...
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For calculation of GCV of fuel we need to analysis of fuel and get the constituent of fuel on weight basis. Based on the enthalpy of formation we may estimate calorific value of fuel. C+ O2 —- CO2 + 8137.5Kcal/kg of carbon. H2 +.5O2—-H20 + 28905 Kcal/Kg of hydrogen. S +O2—SO2+ 2181 Kcal/kg of Sulphur.
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Understanding both the Higher Calorific Value and Lower Calorific Value is important for accurately evaluating the energy content of fuels and optimizing the efficiency of …
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study was to determine the energy content of Ethiopian distilled alcohol (Areki) made from maize, sorghum, and gibto (Lupin). The work entails determining the concentration of ethanol, the gross calorific value, and the acidity of Areki in liquid states. The ethanol content and gross
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6. Low Calorie Vegetables and Fruits (< 100 Kcal) 104 7. Vegetable and Fruits with High Calorie Value (> 100 Kcal) 105 8. Approximate Calorific Value of Some Cooked Preparations 106 9. ALA Content of Foods (g/100g) 110 10.Glycemic Index of Common Foods 111 11.Exercise and Physical Activity 112 12.Removal of the Pesticide Residues …
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Mechanical Engineering questions and answers. In an experiment to determine the calorific value of oil fuel by means of a bomb calorimeter, the mass of the sample of the fuel is 0.75 grams, mass of water surrounding the bomb 1.8kg, water equivalent of bomb and fittings 460 grams, and the rise in the temperature is 3.3 C.
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The calorific value defines the energetic content of the materials; it is the amount of heat a substance produces after complete combustion. You can express it as the gross calorific value (GCV) or high heating value. Also, the calorific value of a substance (generally, solid biofuel or food) is the specific energy of combustion for a unit mass.
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To determine the difference in calorific value between groups, a 2 × 2 factorial ANOVA was used. The energy content was determined using an oxygen bomb calorimeter (Model 6200 isoperibol ...
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work is to determine the ethanol concentration and calorific value of different Ethiopian local distilled alcohols (Areki) as a first step towards identifying its suitability as alternative fuel ...
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conditions, the operative heat of combustion to be used is the net calorific value of the fuel at constant pressure. The net calorific value at constant volume may also be used; formulae are given for calculating both values. General principles and procedures for the calibrations and the biofuel experiments are presented in the main
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The calorific value of a substance, usually a fuel or food, is the amount of heat that it releases during combustion. The calorific value is usually expressed in terms of the quantity of heat released per unit of weight of the substance. The calorific value of a substance can be determined experimentally by burning the substance in a bomb ...
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The higher heating value of produced activated biochar is 28.17 MJ kg-1, accounting for 42.7 % improvement in the calorific value when compared to its untreated counterpart.
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Abstract At present, the calorific values of a variety of combustible solid or liquid substances are determined at commercial laboratories with conventional combustion bomb calorimetric techniques using gram‐size samples. This paper describes the process to calculate the calorific value of Municipal Solid Waste (MSW). Samples of raw refuse …
DetailsShow More. Next: What is an Ideal Fuel? → Go Ad-free. Calorific value = Heat Produced on burning (complete combustion) of 1 Kg of fuel Calorific value = Heat Kg Heat It is measured in Kilo Joules Amount of fuel consumed in kg.
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Procedure to Calculate Calorific Value. It is the measurement of the heat value or amount of energy released and is either measured in gcv or ncv. Gross calorific value (GCV) …
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The calibration process generally involves combusting a substance of known calorific value and comparing this to the standard. The International Organization for Standardization (ISO 1928) specifies combustion of certified benzoic acid as the preferred method for bomb calorimeter calibration [ 4 ].
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The carbon content and calorific value are related to the pyrolysis temperature. When the chestnut shells are pyrolyzed at 750 °C, the yield and calorific value of the char are 44.31 wt% and 35.48 MJ/Kg, respectively. The calorific value of the char is higher than that of first-level cleaned coal (30.00 MJ/Kg).
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The bomb calorimeter is used to determine the calorific values of solid and liquid fuels. It consists of a strong steel shell known as a bomb. It consists of a base which supports the platinum crucible and is screwed to the body of the bomb. The top of the bomb carries an oxygen supply connection and a valve to release the product.
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