Rapid Determination of Gross Calorific Value of Coal Using …
In this study, the gross calorific value (GCV) of coal was accurately and rapidly determined using eight artificial intelligence models based on big data of 2583 observations of coal samples in the Mong Duong underground coal mine (Vietnam). Accordingly, the volatile matter, moisture, and ash were considered as the key variables …
Efficiency Improvement Opportunity in Boiler Without …
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 ...
Estimation of coal gross calorific value based on various …
Thus, estimation of GCV based on the composition of fuel could be one of the basic steps in performance modeling and calculations on combustion systems and evaluate errors of analysis [10]. The main advantage of the GCV prediction is; providing an easy and quick estimation that saving the efforts involved in the experimental …
Prediction of gross calorific value of coal based on …
Gross calorific value (GCV) of coal was predicted by using as-received basis proximate analysis data. Two main objectives of the study were to develop prediction models for GCV using proximate ...
1. FUELS AND COMBUSTION
Introduction to Fuels, Properties of Fuel oil, Coal and Gas, Storage, handling and preparation of fuels, Principles of Combustion, Combustion of Oil, Coal, and Gas This chapter is a prelude to boilers and furnaces 1.1 Introduction to Fuels The various types of fuels like liquid, solid and gaseous fuels are available for firing in
How to Calculate the Coal Quantity Used in a Power Plant
Energy Content in Coal. The basic function of the power plant is to convert energy in coal to electricity. Therefore, the first thing we should know is how much energy there is in coal. Energy content of coal is given in terms of KiloJoules (kJ) per Kilogram (kg) of coal as the Gross calorific value (GCV) or the Higher Heating value (HHV) of ...
Estimation of gross calorific value based on coal analysis …
As an indicative standard for coal stored energy, gross calorific value (GCV) has been modeled by many different artificial intelligence "AI" methods such as a feed-forward artificial neural network (FANN), random forest (RF), and support vector regression (SVR) (GCV could be considered for the primary evaluation of coal prices) (Chelgani ...
EFFICIENCY WITH DIFFERENT GCV OF COAL AND …
EFFICIENCY WITH DIFFERENT GCV OF COAL AND EFFICIENCY IMPROVEMENT OPPORTUNITY IN BOILER Chetan T. Patel1, ... coal feeding rate, steam pressure, steam generation per hour, flue gas analysis, and weather any heat ... Result of Boiler Efficiency Calculation Indian Lignite coal Semi bituminous coal Theoretical air requirement (kg/kg …
Steam Coal
Steam coal. We have expertise in sourcing steam coal internationally for supply to end-users and traders. Our goal is to be a key business partner for our suppliers and customers through delivering desired shipments on-time and at the right price, and demonstrating high reliability, strong business values and agility.
Boiler calculations for Boiler operation Engineer Exam (BOE)
% of heat loss = 127.15 X 100 / Coal GCV = 18424 / 3900 =3.26%. 14-A coal fired Boiler's fly ash collected at APH & analyzed for unburnt. Report shows 22% of unburnt & 750 kcal/kg GCV. Calculate the heat loss due to this unburnt. Consider coal GCV 4700 kcal/kg & ash Percentage in coal 6%. Total ash present in 1 kg of coal = 1 X 6% = 0.06 kg
Gross Calorific Value of Indian Coals and its
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.
Exploring relationships of gross calorific value and …
The mean value of Y concentration in NKCs is around 7.57 × 10 −6 (Table 1) which is lower than the average reported for the world (8.6 × 10 −6) and Chinese coal (18 × 10 −6) [18].Pearson correlation is used to determine affinity of Y by assessing its relationship with organic (carbon) and inorganic (ash) matters of coal samples. "r" …
A Review on Steam Coal Analysis-Moisture
Fly ash from steam coal may have high electrical resistivity, making it difficult to collect in electr ostatic precipitators. Mineral matter in lignite is largely organically bound and inseparab ...
Net Calorific Value Calculator
To use this online calculator for Net Calorific Value, enter Gross Calorific Value (GCV), Weight of Water Vapour (m) & Latent Heat of Vaporization of Water (λ) and hit the calculate button. Here is how the Net Calorific Value calculation can be explained with given input values -> 0.37 = 400000-(15*2000).
CHEMISTRY Module – III FUELS
N = 0.6 %, O = 8.4 %. Find GCV using Dulong's Formula. (Ans: GCV=8965.25 kcal/kg) Problem 7: Calculate GCV and NCV of coal sample having the following composition: C = 80%, H = 7%, S= 3.5 %, N = 2.1%, ash = 4.4%. (Ans: GCV=8828.02 kcal/kg and NCV= 8458.2 kcal/kg) Calculation of theoretical air for the combustion of a fuel
Coal Calculations | SGS India
Accurate and precise calculations are vital to the success of your coal operation. These calculations are used to calculate various skeleton parameters including ash and calorific value that let you determine the …
Coal Conversion Facts
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
Prediction of gross calorific value from coal analysis using …
The other usual laboratory assessment is the gross calorific value (GCV), a fundamental property when coal is planned to be employed as fuel. GCV is coal's most influential rank property and depends on the composition of minerals and maceral . The most exact measurement is GCV generated from a coal sample in a laboratory using an …
Net Calorific Value
Biomass and agricultural residues for energy generation. Eija Alakangas, in Fuel Flexible Energy Generation, 2016. 3.3.3.2 Calorific value. The net calorific value of solid fuels for dry matter is determined in accordance with standards ISO 1928 and EN 14918/ISO 18125 (for solid biofuels).. Gross calorific value is the absolute value of the specific energy of …
Applied Chemistry Questions and Answers – Dullong's Formula
Calculate the net calorific value of a coal sample having the following composition: ... oxygen and hydrogen. So, substitute all the given values in the formula and calculate so that you will get HCV (or) GCV as 8094.9cal/g and then apply the formula NCV=(GCV-0.09H*587), her 587cal/g is the latent heat of steam then you will get NCV=7830.75cal ...
Coal Calculations
Various parameters of coal can be estimated from the Ultimate Analysis and Calorific Value determinations, using Seyler's formula, and other similar calculations (e.g. Dulong's formula). ISO 1928 2009 Determination of Gross Calorific Value
Gross Calorific Value
Occasionally for gas fuels calorific value is quoted on a volumetric basis (Formula F7.2) having units of either kJ/m 3 or kl/scm. The scm (standard cubic meter) is the amount of …
Prediction of gross calorific value from coal analysis using …
The other usual laboratory assessment is the gross calorific value (GCV), a fundamental property when coal is planned to be employed as fuel. GCV is coal's most influential rank property and depends on the composition of minerals and maceral [6]. The most exact measurement is GCV generated from a coal sample in a laboratory using an …
FOrmula to calculate gcv of coal?
NCV and GCV of coal? net calorific value and gross calorific value GCV to NCV conversion: - Using the following IPCC formulae determine the NCV of those fortnightly samples - NCV = GCV - 0.212H - 0.0245M - 0.0008O - Where H - Percentage of Hydrogen, M - Percentage of Moisture and O - Percentage of Oxygen (as determined …
Modeling of gross calorific value based on coal properties …
Gross calorific value (GCV) is one the most important coal combustion parameters for power plants. Modeling of GCV based on coal properties could be a key for estimating the amount of coal consumption in the combustion system of various plants. In this study, support vector regression (SVR) as a powerful prediction method has been …
How to Calculate Industrial Boiler Coal Consumption
It can be seen that the calculation of industrial coal fired boiler coal consumption needs: thermal efficiency, how much steam needs to be generated and coal calorific value. From the empirical data, 1 tons coal can produce 6.5 ton to 7.2 ton steam, and 1 ton steam coal consumption can be 120 to 150Kg.
Solved Calculate the gross calorific value (GCV) and net | Chegg…
Question: Calculate the gross calorific value (GCV) and net calorific value (NCV) of a coal sample containing C % carbon, H % hydrogen and O % oxygen and S % sulfur. Heats of formation of CO2 (g), SO2 (g) and H2O (l) are 393.5, 296.9 and 285.8 MJ/Kmol, respectively. Basis: 100 Kg of
(PDF) Method for Calculating the Gross Calorific …
a moist ash-free basis is calculated from the following. formula: (2) where Wmax is the maximum moisture capacity of. coal, %, and A is the ash content of coal on an as. received basis, %. An ...
Estimation of Gross Calorific Value of Bituminous Coal using …
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 …