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What is caloriphic value ?
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Solution

Calorific value is the amount of heat energy present in food or fuel and which is determined by complete combustion of specified quantity at constant pressure and in normal conditions. It is also called calorific power. The unit of calorific value is kilo joule per kilogram i.e. KJ/Kg.

Water vapor is generated in the combustion process and the heat should be recovered by using certain techniques. If the heat contained in the water vapor could be recovered then it has high calorific value. If heat contained in the water vapor could not be recovered then it has low calorific value.

An efficiency of fuel or food mainly depends on the calorific value. If the value is high, it’s efficiency will also be high. If the value is low, it’s efficiency would also be low. Calorific value is directly proportional to its efficiency.


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