Important Units Conversions for HVAC Engineers As Mechanical & HVAC professionals, quick unit conversions are essential in daily calculations, troubleshooting, and system design. Here is a quick reference list of commonly used engineering conversions. "To supplement your understanding of this subject, we highly recommend watching this comprehensive video guide. You can access the full video by clicking here." LENGTH 1 m = 3.28 ft 1 ft= 12 in = 0.305 m 1 in= 25.4 mm FLOW 1 L/s =2.12 cfm 1 L/s = 15.85 U.S. gpm 1 L/s = 3.6 m³/h PRESSURE 1 Bar = 105 Pa 1 Bar = 14.5 psi 1 Bar = 10 m.w.g 1 Bar = 750 mm Hg 1 in.w.g = 249.09 Pa VOLUME 1 m³ =35.28 ft³ 1 m³ = 1000 L 1 U.S. gal = 3.785 L 1 U.K. gal = 4.55 L MASS 1 kg = 1000 g 1 kg = 35.27 oz 1 kg = 2.2 lb 1 tonne = 1000 kg TEMPERATURE °C =°K+273.15 °F = (°C x 1.8) + 32 COOLING LOAD 1 kW = 3415 Btu/hr 1 RT 3.517 kW 1 RT = 12,000 Btu/hr 1 MBH = 1000 Btu/hr 1 MBH = 0.29 kW VELOCITY / SPEED 1 m/s = 197 fpm 1 fpm = 1 cfm/ft² ENERGY 1 Btu...
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