cold war june 2008 ip and si conversions
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7/28/2019 Cold War June 2008 Ip and Si Conversions
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June 2008
IP and SI Conversions
by: Garth Denison
Senior Application Engineer
The Sporlan Division of Parker Hannifin assumes no obligation or liability for any advice furnished or for anyresults obtained with respect to this information. All such advice is given and accepted at users risk. Thisdisclosure of information herein is not a license to operate under, or a recommendation to infringe any patentof Sporlan Division of Parker Hannifin or others.
® Registered trademark of Sporlan Division of Parker Hannifin, Washington, MO 63090 USA
© Copyright 2003 by Sporlan Division of Parker Hannifin, Washington, MO 63090 USA
This document may be copied and distributed for educational purposes only.
Cold W.A.R. Issue 019
A collection of short
pointed topical papers.
®
1 9
W he t he r i t ’ s A i r
Co nd i t io n i ng o r
Re f r ige ra t io n
I f yo u a re v ie w i n
g a co p y, b u t
wo u ld l i ke to rec
e i ve t he mo n t h l y
Co ld W. A . R. d i rec t l y, e -
ma i l
Co ld W a r S V D @ p
a r ke r.co m
to jo i n o u r ma i l i ng l i s
t.
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Education is Just the Beginning
Cold W.A.R. Issue 19 - Page 2
Air Conditioning and RefrigerationIP Inch Pound and SI Metric Converter
Quick Pick Formulas
Celsius °C = 5/9 (°F - 32)
Fahrenheit °F = 9/5 C + 32
Kilojoules 1 kJ = 0.9478 BTU
BTU 1 BTU = 1.055kJ
Megajoules 1MJ=0.278kW•hr
Kilowatt•hours 1kW•hr=3.60MJ
Kilowatts 1 kW = 1.34 HP
Horsepower 1HP=0.746kW
Watts 1W=3.412BTU/hrBTU/hr 1BTU/hr=0.2931W
Kilowatts 1 kW = 0.2843 ton
Tons Rerig. 1 ton = 3.517 kW
Kilopascals 1 kPa = 4.015 in H2O
Inches o water 1 in H2O = 0.2491 kPa
Kilopascals 1kPa=0.3346ftH2O
Feet o water 1ftH2O = 2.989 kPa
Kilopascals 1 kPa = 0.2953 in Hg
Inches o Hg 1inHg=3.386kPa
Kilopascals 1 kPa = 0.145 psi
Lb orce/sq in 1psi=6.895kPa
Meters 1m=3.28ft
Feet 1ft=0.3048m
Millimeters 1 mm = 0.03937 in
Inches 1 in = 25.4 mm
Sq meters 1 m2=10.764ft2
Sq eet 1ft2 = 0.0929 m2
Cubic meters 1 m3=35.31ft3
Cubic eet 1ft3 = 0.0283 m3
Meters/sec 1m/sec=196.9fpmFeet/min 1fpm=0.0051m/sec
Cubic meters/sec 1 m3 /sec=2119cfm
Cubic eet/min 1cfm=0.000472m3 /sec
Cubic meters/hr 1 m3 /hr=0.589cfm
Cubic eet/min 1cfm=1.70m3 /hr
Liters/sec 1l/sec=2.119cfm
Cubic eet/min 1cfm=0.472l/sec
Liters/sec 1 l/sec = 15.81 gpm (US)
GPM/min (US) 1gpm=0.063l/sec
Kilograms 1 kg = 2.20 lb
Pounds 1lb=0.4536kg
Enthalpy: BTU/lbx2.326=kJ/kgor kJ/kg x 0.4299 = BTU/lb
Heat fow rate: BTU/hrx0.2931=WorWx3.412=BTU/h
Tonrefrig.x3.517=kWorkWx0.2843=Tonrefrig.
Pressure: psix6.895=kPaor kPa x 0.145 = psiin H2O x 249.1 = Pa or Pa x 0.004015 = in H
2O
Volume fow: GPM(US)x6.309x10-2=liters/sec
Liters/secx15.85=GPM(US)
CFM x 4.719 x 10-4 = m3 /s
m3 /s x 2119 = CFM
Velocity: ft/minx0.00508=m/sorm/sx196.85=ft/min
ft/secx0.3048=m/sorm/sx3.281=ft/sec
Mass: lbx0.4536=kgor kg x 2.205 = lb