Characteristics of a good fuel, Biology

(1)   It should have high "calorific value" or heat content.

(2)   It should have "moderate ignition temperature". (lgnition temperature is the minimum temperature at which it stars burning). The fuel having low ignition temperature catches fire easily and it is difficult to store or transport. High ignition temperature causes difficulties in combustion of fuel i.e. large amount of heat energy is requires.

(3)   It should have "low moisture content" since it reduce the heat value.                                         

(note : it takes away appreciable amount of the liberated heat in the form of latent heat of vaporization. It increases the transport costs. Surface moisture causes difficulty in handling of solid fuel. Anyway, presence of 5-10% moisture is desirables as it produces a uniform fuel bed and less fly ash).

(4)   It should have 'low ash or non combustible matter'.                                                                     

(Note: high percentage of ash is undesirable as it does not contribute to the calorific value Ash i.e., Non-combustible matter causes reduction in heat value, increase the cost of storage and disposal, increase the cost of fuel and also causes environmental problems. In furnace grate, the ash may restrict the passage of air and lower the rate of combustion.

(5)   It should have "harmless products on combustion". (I.e. it should not liberate harmful gases like SO2, CO, H2S, PH3 etc.)        

(6)   It should have "moderate velocity of combustion".                                                                       

(Note: if velocity of combustion is slow, high temperature required cannot be attained. If velocity of combustion is high, major part of energy will be radiated to atmosphere.)

(7)   Fuel should be readily available at low cost.

(8)   Storage cost should be low.

(9)   Size of fuel should be uniform in case of a solid fuel.

(10)  Storage and transportation should be easy.

(11)  It should not burn with long smoky flame and combustion should be controlled.            

Posted Date: 7/12/2012 4:15:26 AM | Location : United States







Related Discussions:- Characteristics of a good fuel, Assignment Help, Ask Question on Characteristics of a good fuel, Get Answer, Expert's Help, Characteristics of a good fuel Discussions

Write discussion on Characteristics of a good fuel
Your posts are moderated
Related Questions
why the small intestine is longer in herbivores as comparison to carnivores animals

Q. What are the major endocrine glands of the human body? The major endocrine glands of the human body are the hypophysis (or pituitary), the pineal gland (or pineal body), the

Explain about the Gel bands detection techniques? Gel bands, resulting from a gel electrophoretic separation, may be detected by staining, radioactive counting or immunoblottin

Q. What are the positions of myosin and actin molecules in the sarcomere before and during the muscle contraction? Schematically actin filaments attached perpendicularly to bot


What is the Bio-medical waste The Bio-medical waste (Management & Handling Rules), 1998 is applicable to all persons, who generate, collect, receive, store, transport, treat,


Name the Associated Foods used in bacillus cereus  Cereal dishes that contain corn and corn starch, mashed potatoes, vegetables, minced meat, liver sausage, milk, cooked meat.

Determine People who are at risk from drug-nutrient interactions? People who are at risk from drug-nutrient interactions are the: 1. Persons who have a poor diet or in other

Parts of a Seed Seed is attached to the fruit by a stalk, the funiculus (funicle). The prolongation of the funiculus running along the seed and terminating at the chalaza is