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Common Relationships of Physical Properties

Physical Properties - Common Relationships:
Property Units Water Organic Liquids Steam Air Organic Vapors
Heat Capacity KJ/kg-C 4.2 1.0 - 2.5 2.0 1.0 2.0 - 4.0
  Btu/lb-F 1.0 0.239 - 0.598 0.479 0.239 0.479 - 0.958
Density kb/m3 1000 700 - 1500   1.29 @ STP  
  lb/ft3 62.29 43.6 - 94.4   0.08 @ STP  
Latent Heat KJ/kg 1200 - 2100 200 - 1000      
  Btu/lb 516 - 903 86 - 430      
Thermal Cond. W/m-C 0.55 - 0.70 0.10 - 0.20 0.025 - 0.070 0.025 - 0.05 0.02 - 0.06
  Btu/hr-ft-F 0.32 - 0.40 0.057 - 0.116 0.0144 - 0.040 0.014 - 0.029 0.116 - 0.35
Viscosity cP 1.8 @ 0 C See Below 0.01 - 0.03 0.02 - 0.05 0.01 - 0.03
    0.57 @ 50 C        
    0.28 @ 100 C        
    0.14 @ 200 C        
Prandl Number   1 - 15 10 - 1000 1.0 0.7 0.7- 0.8

 

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