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• Calculators
  • Pipe Calculations
    • Pipe friction loss calculation
    • Heating pipe pressure loss calculation
    • Steam Pipe Calculation
    • Natural gas pipe pressure loss calculation
    • Potable water pressure loss calculation
    • Waste water pipe calculation
      • EU values (Evacuation Units)
    • VRF System Pipe Diameter Calculation
  • Chimney Calculation
    • Chimneys serving one appliance
    • Chimneys serving multiple appliance
  • Air Ducts
    • Air duct calculation
    • Flexible air duct calculation
    • Air grille calculation
    • Diffuser selection
    • Elbows
      • Elbow pressure loss calculation
      • Elbow, smooth radius, splitter vane
    • Air Duct Tee Loss
      • Air duct tee loss - supply
        • 45° entryBranch,diverging
        • Rectangular main to round tap,diverging
        • Rectangular Cross, Diverging
        • Rectangular Wye, Diverging
        • Heel-Tapped Elbow, 90 Degree
      • Air duct tee loss - exhaust, return
        • 45° entry branch, converging
        • Round tap to rectangular main, converging
    • Reduction Transition
      • Transition-Supply Air Systems
        • Round to Rectangular
        • Rect., Two Sides Parallel, Symmetrical
      • Transition-Exhaust_Systems
        • Pyramidal, Exhaust/Return Systems
        • Rect., Two Sides Parallel, Symmetrical
  • Air Conditioning
    • Psychrometric diagram parameters
  • Gas Calculation
    • Gas Pipe Sizing
    • Gas Flow Unit Convert
    • Real Gas
  • Equation Solver
    • Nonlinear equation system solver
    • Linear equation system solver
    • Cubic equation solver
    • Quartic equation solver
    • Quintic equation solver
    • Sextic equation solver
  • Differential Equation Solution
    • Differential equation solution
    • Higher order differential equation solve
• Unit Conversion
  • Dimension system basic units
  • CGS units
  • USCS units
• Reference
• Curriculum vitae