Electricity and Fluids (CONTAM Elementalization of Dampers)


1. Electrical

  - V=IR

  - R=ρL/A


2. Fluid

  - Q=vA

  - △P=ζ × Pd=ζ × 0.5ρv^2=ζ × 0.5ρ(Q/A)^2=(ζρ/A^2) × Q^2

  - △P=R'Q^2 (R'=ζρ/A^2)


3. Electricity and fluids

  - △P=R'Q^2

  - V=IR

  - V ≒ △P

  - I ≒ Q^2

  - R(ρL/A)≒ R'(ζρ/A^2)


4. CONTAM elementrization of the damper

  - R' = ζρ/A^2  

  - Real: A=variable, ζ=variable

  - CONTAM : Based on the performance test results (Q, △P, R') and full open cross-sectional area (A) of a specific damper --> Extract the maximum and minimum values of Terminal loss coefficient (ζ) to apply to the CONTAM program of a specific damper.




* Back to Main Procedures : General COMTAM Simulation Procedure for Pressure differential system(Mainly High-rise building) (contamsmulationlab.blogspot.com)





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