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- Q523647 subject Q8880462.
- Q523647 abstract "Standard cubic feet per minute (SCFM) is the volumetric flow rate of a gas corrected to "standardized" conditions of temperature and pressure thus representing a fixed number of moles of gas regardless of composition and actual flow conditions. It is related to the mass flow rate of the gas by a multiplicative constant which depends only on the molecular weight of the gas. There are different standard conditions for temperature and pressure, so care is taken when choosing a particular standard value. Worldwide, the "standard" condition for pressure is variously defined as an absolute pressure of 101,325 pascals, 1.0 bar (i.e., 100,000 pascals), 14.73 psia, or 14.696 psia and the "standard" temperature is variously defined as 68 °F, 60 °F, 0 °C, 15 °C, 20 °C, or 25 °C. The relative humidity (e.g., 36% or 0%) is also included in some definitions of standard conditions.The temperature variation has the largest effect. In Europe, the standard temperature is most commonly defined as 0 °C, but not always. In the United States, the standard temperature is most commonly defined as 60 °F or 70 °F, but again, not always. A variation in standard temperature can result in a significant volumetric variation for the same mass flow rate. For example, a mass flow rate of 1,000 kg/h of air at 1 atmosphere of absolute pressure is 455 SCFM when defined at 32 °F (0 °C) but 481 SCFM when defined at 60 °F (16 °C).In countries using the SI metric system of units, the term "normal cubic metre" (Nm3) is very often used to denote gas volumes at some normalized or standard condition. Again, as noted above, there is no universally accepted set of normalized or standard conditions.".
- Q523647 wikiPageExternalLink S05910.html.
- Q523647 wikiPageExternalLink S05921.html.
- Q523647 wikiPageExternalLink S05925.html.
- Q523647 wikiPageExternalLink S06036.html.
- Q523647 wikiPageExternalLink atmos.html.
- Q523647 wikiPageExternalLink ACFM_to_SCFM_vs_ICFM.pdf.
- Q523647 wikiPageExternalLink ACFM-versus-SCFM.html.
- Q523647 wikiPageExternalLink fluden.html.
- Q523647 wikiPageExternalLink www.onlineflow.de.
- Q523647 wikiPageExternalLink scfm_v_acfm.htm.
- Q523647 wikiPageExternalLink gas-flow-calculator.
- Q523647 wikiPageWikiLink Q102145.
- Q523647 wikiPageWikiLink Q1058834.
- Q523647 wikiPageWikiLink Q1077153.
- Q523647 wikiPageWikiLink Q1134348.
- Q523647 wikiPageWikiLink Q11466.
- Q523647 wikiPageWikiLink Q11475.
- Q523647 wikiPageWikiLink Q11579.
- Q523647 wikiPageWikiLink Q12495902.
- Q523647 wikiPageWikiLink Q1366187.
- Q523647 wikiPageWikiLink Q14943143.
- Q523647 wikiPageWikiLink Q1545979.
- Q523647 wikiPageWikiLink Q207488.
- Q523647 wikiPageWikiLink Q30.
- Q523647 wikiPageWikiLink Q33438.
- Q523647 wikiPageWikiLink Q379231.
- Q523647 wikiPageWikiLink Q39552.
- Q523647 wikiPageWikiLink Q41509.
- Q523647 wikiPageWikiLink Q44395.
- Q523647 wikiPageWikiLink Q46.
- Q523647 wikiPageWikiLink Q4677824.
- Q523647 wikiPageWikiLink Q523647.
- Q523647 wikiPageWikiLink Q626299.
- Q523647 wikiPageWikiLink Q736895.
- Q523647 wikiPageWikiLink Q8067817.
- Q523647 wikiPageWikiLink Q8880462.
- Q523647 comment "Standard cubic feet per minute (SCFM) is the volumetric flow rate of a gas corrected to "standardized" conditions of temperature and pressure thus representing a fixed number of moles of gas regardless of composition and actual flow conditions. It is related to the mass flow rate of the gas by a multiplicative constant which depends only on the molecular weight of the gas.".
- Q523647 label "Standard cubic feet per minute".