Selection of coal, Biology

Better coal should have following characteristics

(1)   It should have high calorific value.

(2)   It should have low moisture content.

(3)   It should have low ash  content

(4)   It should have high calorific intensity. (Calorific intensity-maximum temperature attainable on complete combustion of coal with theoretical amount of air.)

(5)   Size of coal should be uniform.

(6)   Coking quality should be high (coal on heating gives a coke which is porous, hard, strong. And  suitable for metallurgical needs, then the coal is known as caking coal)

(7)   It should have very low content of sulphur and phosphorous.        

 

 

Posted Date: 7/12/2012 4:23:10 AM | Location : United States







Related Discussions:- Selection of coal, Assignment Help, Ask Question on Selection of coal, Get Answer, Expert's Help, Selection of coal Discussions

Write discussion on Selection of coal
Your posts are moderated
Related Questions
Q. What do you mean by Ulcerative Colitis? Let us understand clearly about ulcerative colitis by reading the following case. Varun, a 48-year-old male, had a very successful

In a Population that is in Hardy-Weinberg equilibrium, the frequency of the recessive Homozygous genotype is 0.49. The frequency of individuals Homozygous for the Dominant allele i

Q. What is the difference between facilitated and simple diffusion? Facilitated by which kind of molecule does the term "facilitated" mean? Simple diffusion is the direct passa

A group working at the University of California, Berkeley has developed "nanothermometers," little nanoparticles that can be injected into cells to measure the temperature in vario

Low Ca ++ in the body fluid may be the cause of: 1.  Tetany 2. Anaemia 3. Angina pectoris 4. Gout  Tetany cause low ca ++

Explain what is Cyanosis and polycythemia? Cyanosis and Polycythemia: Central cyanosis involving the mucous membranes and trunk along with the lips and extremities in absence

Why have biologists and bioinformaticians embraced the Web as a vehicle for disseminating data so quickly, whereas clinicians and clinical informaticians have been more hesitant to

EMBRYOLOGICAL EVIDENCES - A comparative study of embryology of different groups of animals reveals certain features that provide evidences for organic evolution. There ar

Which one of the following is one of the characteristics of a biological community? 1.  Stratification 2. Natality 3. Mortality 4. Sex-ratio   Stratification

Q. What are the final energetic products of every round of the Krebs cycle? And Where is most part of the utile energy at the end of Krebs cycle found? After each round of the