The quantity of thermal energy (gross calorific value) determines its grade. Fig1.Location of different mines in Singrauli coal field 2. MATERIALS AND METHODS A. Collection and preparation coal Sample The samples of coal have been collected from the Singrauli coalfield, located in the Singrauli district, India. These coalfields are

The gross calorific value (GCV) of coal is a key. yardstick for many end users purchasing coal from suppliers, as it. pr ovides a clear measure of the useful energy content of a coal. Several ...

Heliyon. Volume 10, Issue 1, 15 January 2024, e23395. Prediction of gross calorific value from coal analysis using decision tree-based bagging and boosting …

Bituminous coal, for example, has a higher calorific value than sub-bituminous or lignite coal. It can range from about 24 to 35 megajoules per kilogram (MJ/kg). Natural Gas: Natural gas has a calorific value that can vary, but it is typically around 45 to 55 megajoules per cubic meter (MJ/m³) or 1,000 to 1,200 BTU per cubic foot.

Estimation of Gross Calorific Value of Bituminous Coal using various Coal Properties and Reflectance Spectra, International Journal of Coal Preparation and Utilization, DOI: 10.1080/19392699.2019. ...

The Calorific Value varies on the geographical age, formation, ranking and location of the coal mines. It is expressed as kJ/kg, Kcal/kg or BTU/lb. in the SI unit system. Coal contains moisture ...

NIRS, XRF and NIRS-XRF fusion spectrum were separately used to establish partial least squares (PLS) regression models for coal calorific value, and better prediction performance was obtained by ...

Assessments, such as calorific value, ultimate analysis, and proximate analysis determine the energy quality of coal. The weight percentages of ash (C A), moisture (C M), fixed carbon (F C), and volatile matter (V m) are measured by proximate analysis [2]. These four components involve 100 % of all chemical constituents of coal.

In this study, the gross calorific value (GCV) of coal has been estimated using two types of coal analysis data. These are proximate data and spectral reflectance data in visible to near infrared ...

Coal is the primary fuel for producing Electricity. Some of the characteristics of coal have profound influence on the day to day working and economics of the power plant. This article discusses Calorific Value and Moisture. Calorific value is the most important parameter that determines the economics of the power plant operation.

The gross calorific value (GCV) of coal is a key yardstick for many end users purchasing coal from suppliers, as it provides a clear measure of the useful energy …

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 …

In India utilities usually get coal from multiple sources and coal is priced essentially on the basis of gross calorific value (GCV). During combustion, GCV contributes only to the maximum possible heat release, though heat release rate is mostly controlled by coal proximate parameters i.e. ash, volatile matter, moisture and fixed …

Part 2 Determination of calorific value Part 3 Determination of sulphur Part 4 Ultimate analysis: Section 1 - Determination ofcarbon and hydrogen Section 2 - Determination of nitrogen Part 5 Special Impurities 0.4 In reporting the result ofa test or analysis made in accordanee with this standard, if the final value, observed or calculated is to ...

The gross calorific value (GCV), also known as the higher heating value (HHV) of coal is the amount of heat emitted upon complete combus-tion of coal. The GCV of coal is …

Gross calorific value (GCV) or higher heating value (HHV) is the calorific value under laboratory conditions. The difference is essentially the latent heat of the water vapour produced; ash content can vary from 1% to 50% or even higher. Many standards do not define material with >50% ash as being 'coal'.

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, tedious, …

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.

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 Calorific Value of Fuel 3. Experimental Determination of Calorific Value of a Fuel 4. Determination of Calorific Value of Fuels Using Bomb Calorimeter 5. Calorific Value of …

Coal, the most important fossil fuel in India, accounts for 75% of India's total electricity requirement in Dec 2020 and 51.65% of energy requirement overall as on Dec 2021. Coal contains varying amounts of fixed carbon, volatile matter, ash, moisture, and sulphur. The available coal's specific properties and reduced emissions of impurities …

contributes ~ 80% of coal production in India. Generally, Indian coals have low calorific value and high levels of inorganic impurities. Also, coal ash is difficult to remove beyond a certain level due to non-homogenously mix nature. The typical characteristics of Indian coal being used for power generation are given in Table 1. Table 1 Typical ...

The calorific value of coal has a linear dependence on the ash content in coal. Results of determination of the calorific value by the correlation method fitted well at the medium moisture samples ...

India, the world's third largest coal producing country, is expected to maintain strong dependency on coal for the coming few decades. The gross calorific value (GCV) of coal is a key yardstick for many end users purchasing coal from suppliers, as it provides a clear measure of the useful energy content of a coal. Several methods are …

There are also studies using the RF method to predict the calorific value. These studies focused on the calorific value prediction of producer gas from biomass gasification [1], pyrolytic bio-oil from fast pyrolysis of biomass [4], municipal solid waste [13], biomass-biochar-hard coal [24], torrefied biomass [25], coal [26].

India, the world's third largest coal producing country, is expected to maintain strong dependency on coal for the coming few decades. The gross calorific value (GCV) of coal is a key yardstick ...

The calorific value (CV) as an indicator of the chemically stored energy in coal is a very important parameter in the assessment of its value as a fuel [4], [5], and potentially could be a basis for the purchase of coal [6]. CV (heating value) is the amount of energy per unit mass released upon complete combustion [7]. CV of coal as a rank ...

Calorific value is the amount of energy released when a specific quantity of a substance, typically a fuel or food, undergoes complete combustion or metabolism. It is measured in units such as kilojoules (kJ) or kilocalories (kcal). In this article, we will cover the meaning and definition of calorific value, how to calculate with the formula of …

2.2 Coal samples. The samples listed in Table 1 were 36 powdery bituminous coal samples, which were selected from commercial coals in coal-fired power plants of Huadian Power International Corporation LTD. The calorific value was determined on dry basis using national standard laboratory test [].All coal samples were …

The calorific value of any fuel is one of the crucial parameters to grade fuel's burning capability. The bomb calorimeter has historically been used to calculate coal's gross calorific value (GCV). However, for many years, engineers and scientists were trying to measure coal's GCV without a bomb cal …