Calorific Value Concepts and Calculations

The video tutorial explains the concept of calorific value, its types, and units. It introduces gross calorific value (GCV) and net calorific value (NCV), comparing them to salary components to illustrate the difference between total and actual received heat. The tutorial provides definitions, a formula relating GCV and NCV, and discusses the units used in different measurement systems.

What is the calorific value a measure of?

• The amount of heat produced by burning a unit mass or volume of fuel

• The amount of light produced by a fuel

• The amount of fuel consumed in a reaction

• The amount of oxygen required for combustion

Which of the following is also known as the higher calorific value?

• Gross Calorific Value

• Calorific Efficiency

• Fuel Efficiency

• Net Calorific Value

What analogy is used to explain the difference between GCV and NCV?

• Gross and net weight

• Gross and net salary

• Gross and net volume

• Gross and net speed

In the definition of GCV, what happens to the products of combustion?

• They are mixed with other fuels

• They are cooled to 15 degrees Celsius

• They are allowed to escape into the atmosphere

• They are burned again

What is the main reason for the difference between GCV and NCV?

• The presence of carbon in the fuel

• The amount of oxygen available

• The escape of water vapor carrying heat

• The type of fuel used

What is the formula to calculate GCV from NCV?

• GCV = NCV - 0.09 * h * latent heat of water

• GCV = NCV + 0.09 * h * latent heat of water

• GCV = NCV * 0.09 * h * latent heat of water

• GCV = NCV / 0.09 * h * latent heat of water

What is the latent heat of water used in the GCV and NCV formula?

• 587 calorie per gram

• 500 calorie per gram

• 600 calorie per gram

• 550 calorie per gram

In the CGS system, what is the unit of calorific value for solid fuels?

• Joules per kilogram

• Calorie per gram

• Calorie per liter

• Kilocalorie per kilogram

Which system uses joules per kilogram as a unit for calorific value?

• SS system

• MKS system

• None of the above

• CGS system

For gaseous fuels in the MKS system, what is the unit of calorific value?

• Calorie per liter

• Joules per meter cube

• Calorie per gram

• Kilocalorie per meter cube