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Food Calorific Combustion Values

Reference data and engineering information about food calorific combustion values for combustion applications.

foodcalorificcombustionvalues

Overview

Engineering reference data for Food Calorific Combustion Values in combustion engineering.

Key Formulas

Heat Release

Q=m˙HVQ = \dot{m} \cdot HV

Fuel energy release rate.

Air-Fuel Ratio

AF=mairmfuelAF = \frac{m_{air}}{m_{fuel}}

Mass of air per mass of fuel.

Excess Air

EA=O221O2×100%EA = \frac{O_2}{21 - O_2} \times 100\%

From flue gas oxygen measurement.

Variables

SymbolDescriptionUnit
QQHeat release rateW
m˙\dot{m}Mass flow ratekg/s
HVHVHeating valueJ/kg
AFAFAir-fuel ratio

Data Table

The following table lists the calorific combustion values of common foods.

14 rows
Calorific combustion values for selected foods.
Food
Calorific Combustion Value(MJ/kg)
Butter30.5
Cheese14.6
Curd2.5
Egg, yolk5.4
Egg, white14
Fish5.2
Ghee37.6
Meat12
Milk, buffalo4.9
Milk, cow2.2
Potatoes4
Rice16.7
Soyabean18.1
Sugar16

Source: engineeringtoolbox.com

Key Concepts

  • Definition: The calorific (or combustion) value is the total amount of heat energy released when a substance undergoes complete combustion with oxygen.
  • Unit: This value is commonly expressed in MegaJoules per kilogram (MJ/kg).
  • Application Context: This data is relevant for nutritional energy content and for comparing the energy density of different food items. As a reference point, a typical daily energy requirement for a young adult male is approximately 10 MJ.

References