Heat Transfer
Posted By basicmech

What is Lower Calorific Value and Higher Calorific Value


Mainly two types of calorific values are there – Higher Calorific Value and Lower Calorific Value .

This Site Higher Calorific Value (HCV) or useful site Higher Heating Value (HHV) or http://www.formamentis.net/1420-dtit46047-donna-cerca-jesolo.html Gross Calorific Value: When 1 kg of a fuel is burnt, the heat obtained by the complete combustion after the products of the combustion are cooled down to room temperature (usually 15 degree Celsius) is called higher calorific value of that fuel.

lower calorific value and higher calorific value

read here Lower Heating Value (LLV) or Lower Calorific Value (LCV) or  Net Calorific Value: When 1 kg of a fuel is completely burned and the products of combustions are not cooled down or the heat carried away the products of combustion is not recovered and the steam produced in this process is not condensed then the heat obtained is known as the Lower Calorific Value.

Relation between Higher and Lower Calorific Value.

Answer: The amount of Lower Calorific Value can be obtained by subtracting the amount heat carried away by the combustion products especially the heat carried away by the steam

LCV = HCV – Heat carried away by the steam.

For further deep study go through the mechanical engineering questions and answers.


Basic Mechanical Engineering is a small endeavor for the mechanical engineering students and fresh graduates. All the articles are written by mechanical "rocking" engineers \m/

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