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[DOC File]Technical Specifications of Air Compressor
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Air delivery : 71 CFM . Working pressure at outlet of Integrated Refrigeration Type Air Dryer : 5.5 Kg. / cm2. Receiver Air tank capacity: 500 liters minimum. Compressor should be designed for continuous duty and fitted with Deep finned cast iron cylinder with Aluminum cooler tubes and …
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[DOCX File]DFD HVAC DESIGN CRITERIA - DOA Home
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Control of pressure relationships between chemical use labs and lower hazard adjacent spaces shall be accomplished by volumetric tracking of exhaust and supply air terminal units with a differential cfm offset. Through-the-wall type pressure sensing controls shall not be used to control pressure relationships between labs and adjacent spaces.
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[DOC File]Air Flow, Air Systems, Pressure, and Fan Performance
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Standard air is defined as clean, dry air with a density of 0.075 pounds per cubic foot, with the barometric pressure at sea level of 29.92 inches of mercury and a temperature of 70 (F. Selecting a fan to operate at conditions other then standard air requires adjustment to both static pressure and brake horsepower.
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[DOC File]VENTILATION IN NAIL SALONS
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As a rough indicator, 700 ppm of carbon dioxide corresponds to about 25 cfm of outside air per person. To avoid spreading chemical vapors to neighboring businesses, nail salons should not share the same ventilation system with another business and should be under negative air pressure in relation to adjacent spaces.
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[DOC File]Fan Configuration and Airflow Impedance
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Venturi meters are designed following strict standards set by ASME to measure flowrates. The general idea behind them is that the faster the air flows, the greater the pressure drop through the venturi. Thus, if the pressure drop across the venturi is measured, the CFM through it can be determined either by using standard ASME equations or graphs.
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[DOCX File]buildingenergymodel.files.wordpress.com
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At 4PM the building return air to the inlet of the VAV fans is 236,619 CFM as shown by the bottom chart and 75F return air as shown by top chart. Mixed with 47,386 CFM of fresh air at 101F resulting in an air mixed temperature of 79.34F and 284,005 CFM of air to the inlet of the VAV fans as shown by
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[DOC File]A VBASIC SPREADSHEET TO CALCULATE DUCT DIAMETER
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Design air flow will therefore typically be less than 15,000 cfm. Referring to reference 1, figure 9, the recommended range for dp100 is .08 to .6 inches of water (iw) per 100’ of duct. Experience shows that selecting a target dp100 near the low end of this range - .09 to .1 iw/100’ results in low energy use at a reasonable material cost.
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[DOCX File]Air Compressors - University of Dayton
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Low pressure blowers provide compressed air at pressures up to 20 psig using much less electrical power than traditional air compressors, which generate 4-5 scfm/hp when compressing air to 100 psig. For example, a positive displacement blower requires 43 bhp to provide 310 scfm at 20 psig, and 17.7 bhp to provide 423 scfm at 5 psig.
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[DOC File]FORMULA SHEET - Homestead
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Latent + Sensible BTUH = 4.5 x CFM x Enthalpy. Air Flow rate derived from heat flow. CFM = BTUH (Sensible) 1.08 * temp. change Temperature difference of air based on heat flow and CFM. Temp. Change = BTUH (Sensible) CFM * 1.08 Where BTUH = British Thermal Units Per Hour RH =. Relative Humidity Percentage T = Temperature CFM = Cubic Feet Per Minute SENSIBLE HEAT FORMULA
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[DOC File]Flow in Pipes
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Pressure is normally expressed in terms of force per unit area (e.g. pounds per square inch, psi). However, pressure may also be expressed in terms of a height or . head. of water. Applying a pressure of 1 psi to a surface is the same as having a 2.31 ft column of water resting on top of that surface. Thus. 1 foot head = 0.433 psi. 1 psi = 2.31 ...
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Air pressure cfm calculation