Weighted average of oil consumed:
(rate of oil A * quantity of oil A) + (rate of oil B * quantity of oil B)
Quantity of oil (A+B)
GCV of oil consumed:
(GCV * quantity of oil A) + (GCV * quantity of oil B)
Quantity of oil (A+B)
yyyyyyyyyyyyyyy=GCV-(IM/9+5)*53
GCV, gross calorific value, is the quantity of heat produced by combustion. UHV, useful heat value, is the gradation of non-coking 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 from the ultimate analysis report) - Please note that here GCV and NCV are in Mega Joule/kg, therefore it is required to do the necessary unit adjustments (1kcal/kg = (4.186/10^3) = 0.004186 MJ/kg) Assuming GCV = 18.4017MJ/kg, O =9.23%, H = 3.63%, M=7.45% (Source: Coal analysis report conducted independent testing laboratory - ' National Council for cement and building materials')
Coal hasn't a chemical formula; the major and useful component of coal - carbon - has the chemical symbol C.
Formula: C Its Carbon
By Dulong formula
yyyyyyyyyyyyyyy=GCV-(IM/9+5)*53
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 and Sulphur. According to Dulong's formula gross calorific value of a fuel is; GCV = ((35.5 x C + 114.8 x H + 9.5 x S - 14.5 x O) x 1000) / (100 x 4.1868) Each multiple of carbon, hydrogen and sulphur represents heat generated by its one mole. The formula gives GCV in kcal/kg. Simple isnt it !
to produce 1 ton of steam how many GCV of coal is required?
Gross calorific value of coal
Useful heat value(UHV) pricing mechanism of coal deducted ash and moisture content from standard formula and in this coal is categorised into 7 grades. Gross calorific value(GCV) of coal has 17 grades and prices are linked to the actual calorific value/quality of coal-by latika joshi
Theorotical value can be calculated using the results of ultimate analysis of coal . Based on the GCV of combustible value of coal.
3300
I do not think that there can be a way to calculate GCV from the UHV. UHV is calculated by taking into account the percentage of two Proximate components of coal i.e. Ash and Moisture. But GCV is calculated using the percentage of ultimate components such as C, H, O, S. UHV(Kcal/Kg) = 8900-138(A+M) GCV is calculated using Dulong's Formula GCV(KJouls/kg) = 333xC + 1442(H -O/ 8) + 93 x S (GCV and all components in dry basis) {| style="width: 81pt; border-collapse: collapse" width="108" |- style="height: 28.5pt; mso-height-source: userset" | class="xl64" style="border: 0px black; width: 81pt; height: 28.5pt; background-color: transparent" width="108" height="38" | |}
GCV, gross calorific value, is the quantity of heat produced by combustion. UHV, useful heat value, is the gradation of non-coking coal.
gross calorific value
(uhv + 3645 -75.4 m)/1.466