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#Psi drop cold weather calculator download#
#Psi drop cold weather calculator free#

I then recorded the pressure of the balls. I placed two official NFL footballs in our calibrated thermal chamber and let the footballs reach equilibrium at 24 C (75F) - the approximate temperature when the NFL officials tested the pressure of the Pats' balls. Basically I wanted to find out whether or not temperature can actually influence the pressure (measured in psi) of an official NFL football enough to account for what was seen during that infamous Patriots Colts playoff game - so I set up the following test: Again, as an engineer I like to test theories against real-world conditions. Air Flow - Pressure loss in pneumatic tubes - sizes ranging 5 - 36 mm.Deflategate -How Temperature Can Influence Pressure in a FootballĪs an engineer I was intrigued by the #deflategate controversy and theories surrounding the New England Patriots.

#Psi drop cold weather calculator free#

Free Air - Compression Ratio - The ratio of compressed air pressure to free air pressure. Capacity and Operating Pressure - Pressure drop in compressed air pipe lines.

Compressed Air Pipe Lines - Pressure Loss vs.

Compressed Air Pipe Line Capacity - Capacities of compressed air pipelines - pressure ranging 5 - 250 psi (0.5 - 17 bar).

Capacity - Air pipe lines capacities at pressure 100 psi (6.9 bar).

Compressed Air - Pressure Drop Diagrams, Metric Units - Pressure loss in compressed air pipe lines.

Compressed Air - Pipe Line Pressure Drop Diagram - Calculate pressure drop in compressed air pipe lines with a nomograph diagram.

Compressed Air - Friction Loss in Hoses - Friction loss in air hoses vs.

Compressed Air - Air Flow Discharge through Hoses - Discharged air flow volume through hoses with pressure ranging 30 - 90 psi.

Air Tools - Air Consumption - Air consumption of air tools.

Gases and Compressed Air - Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves.

Pressure drops in 100 m (330 ft) compressed air schedule 40 steel pipe lines are indicated in the tables below: Compressed Air Pipeline Pressure Drop Table - Initial gauge Pressure 7 kg/cm 2 (100 psig) You can open, save and modify your own copy of the Google spreadsheet if you are signed into your Google Account. Or, alternatively - Compressed air pipe lines - pressure drop calculations - in Google Docs.

Compressed air pipe line pressure drop diagrams.

The same spreadsheet including different types of pipes (imperial units). Compressed Air Pipeline Pressure Drop SpreadsheetĬalculations can be done for other pressures and/or pipe lengths by using this excel spreadsheet (metric units). The pressure drop for the whole pipe line can also be calculated by summarizing the pressure drops for each part. The final pressure after the last part is the final pressure at the end of the pipe line.

Use final pressures as initial pressures for the next parts. NOTE! - a pressure drop above 1 kg/cm 2 (14-15 psi) is in general not relevant and the formula and calculators above may not be valid.įor a more accurate calculation - or for a longer pipe lines with larger pressure drops - divide the line in parts and calculate the pressure drop and final pressure for each part. Q - air volume flow at atmospheric conditions (FAD) (m 3/min) The calculator below can used to calculate the pressure drop in compressed air pipelines. Make Shortcut to these Calculators on Your Home Screen?.

Online Compressed Air Pipeline Pressure Drop Calculator - Metric Units

#Psi drop cold weather calculator download#

Download and print compressed air pressure drop nomogram!.The nomogram below can be used to estimate pressure drops in compressed air pipe lines with pressure 7 bar (100 psig). A mass must be multiplied with gravity g to be a force (weight). Note! - pressure is "force per unit area" and commonly used pressure units like kg/cm 2 and similar are in principle not correct since kg is a mass unit. Q = air volume flow at atmospheric conditions ( FAD) (m 3/min) The pressure drop in compressed air lines can be calculated with the empirical formula