Suppose you are asked to boil a given quantity of water using cow dung coal and biogas as fuel what will be your order preference and why
Answers
Answer:
Explanation:
Fuel is the source of heat.
There are three kinds of fuel namely solid, liquid and gas. Ideal fuel must have the following qualities:
• it must have high calorific value,
• must burn easily
• should be easy to transport
• should have proper ignition temperature
• must not produce any harmful gases while burning When compared to cow dung and coal, LPG has all the above qualities.
It has more calorific value than cow dung which means it produces more heat. It can burn easily leaving behind no harmful gas.
Fuel is the source of heat.
There are three kinds of fuel namely solid, liquid and gas. Ideal fuel must have the following qualities:
• it must have high calorific value,
• must burn easily
• should be easy to transport
• should have proper ignition temperature
• must not produce any harmful gases while burning When compared to cow dung and coal, LPG has all the above qualities.
It has more calorific value than cow dung which means it produces more heat. It can burn easily leaving behind no harmful gas.
An ideal fuel is cheap, readily available, readily combustible and easy to transport. It has high calorific value. It does not produce gases or residues that pollute the environment.
Fuels differ in their efficiency and cost.
Fuel efficiency is expressed in terms of its calorific value which is expressed in units of kilojoule per kg.
Unburnt carbon particles in air are dangerous pollutants causing respiratory problems.
Incomplete combustion of a fuel gives poisonous carbon monoxide gas.
Increased percentage of carbon dioxide in air has been linked to global warming.
Oxides of sulphur and nitrogen produced by the burning of coal, diesel and petrol cause acid rain which is harmful for crops, buildings and soil.