Define the following term. i) Calarific value
ii) Ignition temperature in Calorie & kcal
Answers
Answer:
What is calorific value?
The amount of heat generated, produced, liberated by during from one kilogram of specific substance is Calorific Value. Its unit is Joules /Kilogram. For eg. The calorific value of diesel fuel is roughly 45.5 MJ/kg (megajoules per kilogram), slightly lower than petrol which is 45.8 MJ/kg. However, diesel fuel is denser than petrol and contains about 15% more energy by volume (roughly 36.9 MJ/litre compared to 33.7 MJ/litre). Calorific Value can be calculated by using different types of calorimeter they are: The different types of calorimeters are;
Adiabatic Calorimeters
Reaction Calorimeters
Bomb Calorimeters (Constant Volume Calorimeters)
Constant Pressure Calorimeters
Differential Scanning Calorimeters
Answer:
The ignition temperature of a substance is the least temperature at which the substance starts combustion. ... Substances which spontaneously ignite in a normal atmosphere at naturally ambient temperatures are termed pyrophoric.
calorific value is
the energy contained in a fuel or food, determined by measuring the heat produced by the complete combustion of a specified quantity of it. This is now usually expressed in joules per kilogram.
"double the calorific value of coal"