Supplementary Material, Appendix E – E.14

APPENDIX E – Air-Water Interface

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Surge Analysis and the Wave Plan Method

Supplementary Material: Example Problems and Solutions

Appendix E – Problem 14

E.14 When used as a unit of flow, CFM refers to cubic feet per minute. However, when referring to flow of air in HVAC systems or flow of air through air valves on water pipeline systems, it is common to use either SCFM or ACFM to represent the flow units.

a. Explain what SCFM and ACFM stand for.

b. What is the difference between those two flow units?


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