Nov 25, 2015 · The first fan has a higher static pressure rating than the second and they both have an equal maximum volume flow (on paper), yet the second fan is a better selection for use as a case fan as it ...
With Design Master, as you draft you can set the CFM required for each diffuser, whether each duct is sized to maintain velocity, pressure drop, or static pressure, as well as how and whether the shape of the duct changes during sizing.
4700 CFM fan rating Powerful 1 HP motor Built in wheels and handle for easy relocation BLOWER 700 CFM 3 Year Warranty* Static Pressure 0.125 0.25 0.375 4600 4450 4300 0.5 4000 CFM Dimensions (LxWxH) 26" x 24.5" 4700 Fan Rating 4,700 CFM Motor 1 / 115 v *See sureflame.ca/warranty for coverage. SUREFLAME.CA 1-800-661-1162
Mar 09, 2019 · For low static pressure, leaky ductwork is often the cause, though a weak HVAC blower fan can also be to blame. Improperly sized ductwork can also cause a low static pressure reading. The Bottom Line. Being able to measure and calculate static pressure is a basic, yet important, skill for any HVAC professional. For example, suppose fan #4 from Table 7 (see the fan performance data section above) is drying 10 tons of hay and the static pressure reading in the attached duct is 1 inch of water. The fan performance data in Table 7 shows that fan #4 provides 2,775 cubic feet of air per minute (cfm) against a pressure of 1 inch.