- 1 What type of fuel has a greater heat value?
- 2 Where can I find HHV?
- 3 What is heating value of fuel?
- 4 How do I get LHV?
- 5 How do you calculate LHV?
- 6 What is net calorific value?
- 7 Why hydrogen is not used as a fuel?
- 8 Which fuel causes least pollution?
- 9 What fuel has the highest energy density?
- 10 What are the 3 types of fuel?
- 11 Which has highest fuel value?
- 12 Which heating value is more important?
What type of fuel has a greater heat value?
For hydrocarbons the difference depends on the hydrogen content of the fuel. For gasoline and diesel the higher heating value exceeds the lower heating value by about 10% and 7%, respectively, and for natural gas about 11%.
Where can I find HHV?
HHV= 0.3491(C) + 1.1783(H) + 0.1005(S) + 0.1034(O) + 0.0151(N) +0.021(A).
What is heating value of fuel?
The heat value of a fuel is the amount of heat released during its combustion. Also referred to as energy or calorific value, heat value is a measure of a fuel’s energy density, and is expressed in energy (joules) per specified amount (e.g. kilograms).
How do I get LHV?
Under this formula, the relationship between the lower heating value of a fuel and the higher heating value of that fuel is: LHV = HHV – 10.55(W + 9H) Where: LHV = lower heating value of fuel in Btu/lb, HHV = higher heating value of fuel in Btu/lb, W = Weight % of moisture in fuel, and H = Weight % of hydrogen in fuel.
How do you calculate LHV?
To calculate the LHV you must subtract the heat of vaporization of H2O from the HHV. Long ago the heat of vaporization of water was 550 cal/g or (X the Mole wt of 18) 9900 cal/mole. Now it is (multiplying by 4.184 J/cal) 41,422J/mole or 41.4 kJ/mole (thanks to Mr. Metric).
What is net calorific value?
The heat produced by combustion of unit quantity of a solid or liquid fuel when burned, at a constant pressure of 1 atm (0.1 MPa), under conditions such that all the water in the products remains in the form of vapor.
Why hydrogen is not used as a fuel?
Hydrogen has the highest calorific value so it can be considered as the best fuel but it is highly inflammable so it is diificult to store, transport and handle so it is used as a fuel only where it is absolutely necessary.
Which fuel causes least pollution?
Natural gas is the cleanest fuel and causes the least pollution when burnt compared to petrol, diesel and coal.
What fuel has the highest energy density?
The highest energy content fuel is hydrogen, which is also the simplest chemical component in existence. Gasoline, which is derived from refining crude oil, contains much more energy than coal (twice than the lower grade bituminous) or wood (three times).
What are the 3 types of fuel?
There are three types of fossil fuels which can all be used for energy provision; coal, oil and natural gas.
Which has highest fuel value?
Hydrogen has the highest calorific value of (141,790 KJ/kg) thus have highest fuel value. Calorific value of charcoal, natural gas and gasoline are (29,600; 43,000; 47,300 kJ/ kg) respectively. Natural gas majorly consists of methane.
Which heating value is more important?
If water is present as liquid, then heating value is called gross calorific value. If water is present as vapor, then the heating value is called net calorific value. In real operating situations, water in exhaust gases is present as vapor, so net calorific value is more important for energy efficiency calculations.