What is the airflow in CFM through a 10 inch by 20 inch duct with a total pressure of 0.15 inches wc and a static pressure of 0.1 inches wc?

What will be an ideal response?


0.15 – 0.1 = 0.05 inches wc velocity pressure
4005 x ?0.05 = 896 CFM

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Find the estimated emissions listed below for a spreader stoker cogeneration facility that burns 10,000 tons of bituminous coal per year with a 3% by weight sulfur content. Use the EPA’s AP-42 (Volume 1, 5th ed.), Chapter 1: External Combustion Sources Emission factors for Bituminous and Subbituminous Coal Combustion.

a. Tons of SOx emitted per year b. Tons of NOx emitted per year c. Tons of CO emitted per year What will be an ideal response?

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Wall panels cast on a floor slab can be tilted up when they reach _____.

a. full design strength b. 75 percent of design strength c. one-half of design strength d. 25 percent of design strength

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Show rules usually require that all grooming products be _____.

Fill in the blank(s) with the appropriate word(s).

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Antilock braking systems (ABS) can do all of the following EXCEPT:

A. increase engine power B. reduce stopping distances on slippery road surfaces C. improve vehicle stability during braking D. decrease wheel slippage

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