Created By : Rina Nayak

Reviewed By : Phani Ponnapalli

Last Updated : May 15, 2023

Make use of our best heat of combustion tool that helps you to estimate the heat released during the combustion process. As this tool is for free, use of this is also easy. Just give the inputs in the input field and click on the calculate button that gives you the answer instantaneously.

Lower Heating Value(LHV)
MJ/kg
Heat Of Vaporization(Hv)
MJ/kg
Number Of Moles Of Water Vaporized(nH20 )
moles (mol)
Number Of Moles Of Fuel Combusted(NFuel)
moles (mol)
Heat Of Combustion(HC)
MJ/kg

### What is Heat of Combustion?

The heat of combustion is the amount of energy released when a particular fuel undergoes combustion. This heat of combustion goes by several names like higher heating value, higher calorific value, and upper heating value.

Here is the formula used for combustion is,

HC = LHV + Hv * ( NH20 / NFuel)

where,

HC is the heat of combustion

LHV is the lower heating value

Hv is the heat of vaporization

NH20 is the No.of moles of water vaporized

NFuel is the No.of moles of fuel combusted

### How do you Calculate the Heat of Combustion?

Take a look at the steps that are given below to calculate the heat of combustion easily.

• Enter the values that were given in the problem.
• Determine the values of heat of combustion and lower heating value, the heat of vaporization.
• Then apply the formula, i.e., HC = LHV + Hv * ( NH20 / NFuel)
• Finally, get the answer to the heat of combustion.

Example:

Question: Calculate the heat of combustion of methane given its lower heating value is `40 MJ/kg` and it releases 10 moles of water vapor when 4 moles of fuel are combusted.

Solution:

Given values, LHV = `40 MJ/kg`

NH20 = 10moles, NFuel = 4 moles.

As we know, heat of vaporization for water as `2.257 MJ/kg.`

Apply the formula,

HC = LHV + Hv * ( NH20 / NFuel)

HC = 40 + 2.257 * ( 10 / 4)

= 45.64 Mj/Kg

Therefore the heat of combustion is 45.64 Mj/Kg.

Use our calculator tool that helps you to learn the concept along with free usage of the calculator. Check out our link chemistrycalculatorpro.com

### FAQs on Heat of Combustion Calculator

1. What is the heat of combustion?

The heat of combustion is the measure of the total energy released by a substance or fuel during combustion.

2. How to use Heat of Combustion Calculator?

Simply give the inputs in the input fields and click on the calculate button that provides you the answer easily.

3. How to Calculate the Heat of Combustion?

Heat of combustion can be calculated by using the formula, HC = LHV + Hv * ( NH20 / NFuel).

4. What is combustion?

Combustion is the chemical reaction of substances along with oxygen that releases heat as energy and gaseous products.