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To: Iris7
A 1600 MW coal plant burning low sulfur Western coal will consume about 54 tons of coal a minute (not hour). Think 80,000 tons of coal a day.

Where do these figures come from? I calculate 23 to 25 thousand ton/day.

41 posted on 12/30/2005 11:16:18 AM PST by BipolarBob (Yes I backed over the vampire, but I swear I looked in my rearview mirror.)
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To: BipolarBob
Hi, Bob,

You are correct and I was in error.

1600 MW = 1,600,000 KW

1,600,000 Kw * 24 hrs./day = 38,000,000 Kw/hr/day)

38,000,000 Kw/hr/day * 3412 Btu/(Kw/hr) = 130,000,000,000 Btu/day

Western low sulfur coal about 11,000 Btu/lb at 33% efficiency is 3,600 output/11,000 input.

(130,000,000,000 Btu/day)/(3600 Btu/lb) = 36,000,000 lb./day

36,000,000 lb/day * ton/2000lb = 18,000 tons per day. 12.5 tons per minute.

Dang. Was working from memory using info I remember from a different plant. I must have confused pulverizer capacity with full load coal usage. I had better use a pencil, paper and calculator instead of just a calculator these days!

An excuse! An excuse! Quick, blame someone else! At least blame it on coefficient confusion!

Your 25% efficiency is likely more accurate than 33% since you seem to be working from coal to MW/hrs metered into the grid and I was using only coal to generator output.

48 posted on 12/30/2005 12:18:47 PM PST by Iris7 (Dare to be pigheaded! Stubborn! "Tolerance" is not a virtue!)
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