Coal consumption calculation for CFB and BFBC Boilers type

[mayangsari]

Please give me a calculation to count the Coal consumption versus steam flow rate/hours.
Regards
Eka A. Wiyana

 

[rjoaks]

Heating value of coal, Btu/lb of coal x lb. of coal/Hour x Boiler efficency equals the steam enthal.Btu/lb of steam x lb.of steam/Hour.
simple cal. but need to know Btus of saturated and superheated steam, and of feed water.
You can find info by check "Steam Its Generation and Use" by Babcock & Wilcox co. Good Luck.

Regards
rjoaks

 

[macmet]

Check out this link,

http://science.howstuffworks.com/question481.htm

I'm not sure if that's enough detail for you, but it should give you the idea.

Convert KW to BHP by dividing by ~9.7
BHP to lbs/hr of steam * 34.5.

Assuming you are not superheating.