Solar Radiation Data Manual for Buildings

Table of Contents

Appendix - Methodology

Unit Conversion Factors

To ConvertInto  Multiply By
  Btu per square foot  kilowatt-hours per square meter      0.003152
  Btu per square foot  megajoules per square meter      0.01135
  Btu per square foot  Langleys      0.2712
  Btu per square foot  calories per square centimeter      0.2712
  degrees Fahrenheit  degrees Centigrade      (°F-32)/1.8    
  degree days (base 65 degrees Fahrenheit)  degree days (base 18.3°C)      0.5556
  degrees (angle)  radians      0.017543
  feet  meters      0.3048
  lux  foot-candles      0.0929
  miles per hour  meters per second      0.4470
  pounds per square inch  atmospheres      0.06804
  pounds per square inch  millibars      68.97
  pounds per square inch  kilograms per square meter      703.1
  pounds per square inch  kilopascals      6.897


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