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Determination of Calorific Value (Heating Value) of Gaseous

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dave mon

on 2 October 2014

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Transcript of Determination of Calorific Value (Heating Value) of Gaseous

Determination of Calorific Value (Heating Value) of Gaseous fuel by gas Calorimeter
Objective:
To find the Calorific value or heating value of natural gas using Gas Calorimeter.

Standard reference:
ASTM D1826 – 094(2010): Standard Test Method for Calorific (Heating) Value of Gases in Natural Gas Range by Continuous Recording Calorimeter
Significance:
- Calorific values represent the amount of heat produced during combustion. People use calorific values to determine how efficient and effective fuels are, looking for fuels with high calorific values to use in energy generation.
Background:
Calorific value or the Heating value for gaseous fuels is the measure of the heating power and is dependent upon the composition of the gas
The CV refers to the amount of energy released when a known volume of gas is completely combusted under specified conditions.
Analytically, CV can be obtained using the Dulong's formula

14,600 C + 62,000(H -O/8) + 4000 S

Equipment: Gas Calorimeter, Thermometer, Water container, Weighing Scale, Wet- gas meter, Burner
Procedures:

-With water flowing through the calorimeter, light the burner outside the calorimeter
-adjust the gas flow to give a medium flame and insert the burner in the calorimeter
-get the temperatures of both inlet and outlet of both the water and the gas sample.
Sample data Sheet

1. Weight of water container [kg] = __________
2. Weight of condensate [kg] = __________
3. Weight of water container with water collected [kg] = __________
4. Weight of condensate container with condensate [kg]= __________
5. Dry gas pressure at meter condition = __________
6. Time of flow of water [min] = __________
7. Gas burnt per minute [L/min] = __________
8. Inlet temperature of water [‘C] = __________
9. Outlet temperature of water [‘C] = __________
10. Inlet temperature of Gas [‘C] = __________
11. Outlet temperature of Gas [‘C] = __________


Conclusion

In testing for the Calorific value or the heating value of a gaseous fuel, one can use a gas calorimeter to experimentally get the parameters for calculation or use the Dulong’s formula to make use of the proportion by weight of Carbon, Hydrogen, Oxygen and Sulfur content of a certain gaseous fuel.
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