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A 600 MWe coal-fired power station operating at 38% efficiency and 75% overall availability will consume approximately: – Bituminous coal (CV 6000 kcal/kg NAR*): 1.5 Mt/year – Brown coal (CV 2250 kcal/kg NAR*): 4.0 Mt/year *Net As Received Sources: GWC Coal Handbook & IEA Clean Coal Centre


For the dry, ash-free basis GCV calculation, the equation can be defined as given below [52], where c, h, o, n, s are the molar concentrations of carbon, hydrogen, oxygen, nitrogen, and sulfur in kilograms of dry and ash-free coal basis, respectively. The GCV and GCV DAF are defined in …


GCV of coal per unit (million kcal) = Increase in energy consumption due to change in GCV of coal in AY (kW/hr) X GHR of AY X Operating Hours of AY/10^6 Where AY = Assessment Year GHR =Gross Heat Rate (kcal/kWh) GCV =Gross Calorific Value (kcal/kg) Normalized Thermal Energy due to change in GCV of coal for station (million kcal)


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Ministry of Coal, GOI

Coal Grades. The gradation of non-coking coal is based on Gross Calorific Value (GCV), the gradation of coking coal is based on ash content and for semi coking /weakly coking coal it is based on ash plus moisture content, as in vogue as per notification. Grades of Coking Coal. Swipe to view. Grade. Ash Content. Steel Grade - I. Not exceeding 15%.


kJ/kg Kcal/kg kJ/kg .23884 GCV (Kcal/kg) NCV (Kcal/kg) - Equation: GCV=NCV+53H (ii) Where H = % of hydrogen present in the coal sample including hydrogen of moisture and of water of constitution. 6. Bases of Coal Analyses. Coal analyses is reported under different conditions or bases like AR, AD, MF, DB, MAF and DAF.


Where GCV in kcal/kg and moisture, ash, fixed carbon in air dried percentage basis. In the present study, 49 samples were used to develop the regression model and 10 were used to ... 3.3 Experimental Gross Calorific Value of Coal Samples 17 4.1 Experimental GCV and Predicted GCV by Regression Model 22


Since GCV was one of the key factors used for energy billing, Audit compared the GCV 'as billed' by coal companies for coal loaded on to wagons, GCV of coal 'as received' at the unloading point of the power station and GCV of coal 'as fired' in the boilers for a year (from October/November 2012 to September 2013) 26 in the stations ...


pertaining to the quantity of the coal and does not have any impact on the GCV of the coal. 3. GCV of the coal is decreased over a period as a result of the storage in the coal yard. Consequently, CERC Tariff Regulation 2019 has stipulated that GCV of the coal as received in kCal/kg is reduced by 85 Kcal/Kg on


ISO reproducibility values for C(db) 1.00% and GCV(db) 300J/g, converted to as-received basis, are used in the calculation of Uncertainty. Fuel Ratio = Fixed Carbon / Volatile Matter Ballast = Ash(ar) + Total Moisture; Hydrogen in Coal: …


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 Combustion Bureau of Energy Efficiency 2 Ch-01.qxd 2/23/2005 11:18 AM ...


15-A coal sample of HCV 5100 kcal/kg having 3.5% of hydrogen in it, then calculate the LCV LCV = HCV - (9 X H2 X 586) = 5100 – (9 X 3.5% X 586) = 4915.41 kcal/kg 16-A coal sample of GCV 4800 kcal/kg having total moisture 18%, …


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Coal Grades - EnergySector.in

The gradation of non-coking coal is based on Useful Heat Value (UHV), the gradation of coking coal is based on ash content and for semi coking / weakly coking coal it is based on ash plus moisture content. ... Gross Calorific Value GCV (Kcal/ Kg) (at 5% moisture level) A: Exceeding 6200: Not exceeding 19.5: Exceeding 6454: B: Exceeding 5600 but ...


1 kcal/kg 0.0041868 mj/kg. 1 metric ton (tonne) 1.10231 short tons. From GAR to NAR. The difference between net and gross as received (NAR v/s GAR) specific energy values is the latent heat of the water vapour which lowers the effective calorific value in the boiler. To convert from GAR to NAR for bituminous coals subtract approximately.


COAL CALCULATOR. 1. Total Moisture (As received basis) Inherent Moisture (Air dried basis) Ash (Air dried basis) Ash (As ... Gross Calorific Value in Kcal/Kg (As received basis) Gross Calorific Value in Kcal/Kg (Dry basis) GULF COAL TRADING LLC. Administration Office: P.O. Box 14677, DM Bldg., Office # 307, Salahuddin Road, Deira, Dubai, United ...


Coal Specifications. We exclusively trade thermal coal of Indonesian origin and offer three main calorific values – GAR 4200 kcal/kg, NAR 4700 kcal/kg and NAR 5500 kcal/kg. The table below indicates the typical specifications of each category of coal under the American Society for Testing and Materials Standard. Specification in ASTM Standard.


1: GCV of coal vs. Efficiency graph for AFBC Boiler Figure 1 shows the relation between efficiency and GCV of the coal. Graph shows how the efficiency of boiler increases when the GCV of the coal is increased. Efficiency has been calculated for 3000, 3300, 3600, 5000 and 5800Kcal/kg GVC of coal and efficiencies are 74.61, 76.30, 77.7, 82.05 and ...


The method of measurement and the calculation of the GCV, defined by CEN/TS 14918, is rather complex and, in many cases, has a time and cost importance. ... The sludge was mixed with coal bottom ...


A Review on Steam Coal Analysis -Calorific Value D. Mahapatra Trimex Industries Pvt. Ltd., Chennai, INDIA I. Introduction Coal includes chemical energy that is converted at a power plant into electric energy with determined efficiency. The efficiency is dependent, among others, on coal quality parameters, since the efficiency of the boiler is a


Calculation of GCV of fuel:-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


Energy conservation table and sample calculation for annual energy consumption in terms of MTOE Sl. No MTOE Calculation 1 1 Kwh 860 Kcal 2 1 kg Coal / coke Gross calorific value as per suppliers (coal Company's) fastest Certificate 3 1 Kg Charcoal 6900 Kcal or as per supplier certificate 4 1 Kg Furnace oil/Residual Fuel Oil/Low Sulphur Heavy Stock – Naptha 10.050


Note 3 Can give erroneous results if coal shipments are a blend of low and high rank coals. 4.1 Dulong's Formula: GCV(db) = 333xC(db) + 1442(H(db) – O(db) / 8) + 93xS(db) GCV is in (kJ/kg dry basis) – C, H, O, S as percent on a dry basis. Other calculations formulas related to CV:


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Gcv of the coal? - Answers

Coal If we know the ultimate analysis of fuel, we can easily calculate its GCV. The basic principle is that there are only 3 components in a fuel which generate heat. These are: Carbon, Hydrogen ...


or, LCV or NCV = (HCV or GCV) – (1/9 H x ΔHv) where, ΔHv = latent heat of steam, which is approximately 587 kcal/kg or cal/g Problem 1: 2 kg of a coal was burnt in a bomb calorimeter. The heat liberated was found to be 14114 kcal. Calculate the calorific value of the coal sample. (Ans: 7057 kcal/kg )


In the chart above, the calorific value of different fuels has been drawn where Petrol, Diesel and Heavy Oil have their calorific values in a similar range, i.e., 11,000 Kcal per Kg. However, studies have shown that Petrol has the maximum one. Anthracite coal and coal gas have 8500 kcal per kg and 76000 Kcal per cubic meters, respectively.


A bomb calorimeter is an apparatus used for measuring the performance of coal in term of heat of combustion. Recent awareness has been created regarding uncertainty of measurement, due to mainly ...