Calculator Instructions
Return to Calculator Tab
Cross Flow Turbine Design Calculator - Borst Engineering & Construction LLC
Penstock Design Flow Rate (GPM, GPM=448.8 x CFS)
Penstock Design Inlet Pressure (PSI)
Penstock Design Elevation Change (Feet)
Penstock Design Hydraulic Diameter (Inches)
Penstock Design Length (Feet)
Penstock Design Hazen-Williams Friction Coefficient (Steel Pipe is 130)
Penstock Design Friction Head Loss (Feet)
Turbine Design Speed (RPM)
Turbine Nozzle Velocity Coefficient (0.95-1.0 typical)
Water Jet Angle of Attack (Degrees, 16 typical)
Number of Blades (18 is typical)
Blade Thickness (Inches, from Blade Stress Analysis Calculator)
Shaft Diameter (Inches, from Shaft Stress Analysis Calculator)
Expected Turbine Efficiency (%, 60-90 typical)
Expected Generator Efficiency (%, 90 typical for PMG)
Maximum Theoretical Power (KW, HP=KW/0.745)
Estimated Power (KW, HP=KW/0.745)
Estimated Energy (KWH/Month)
Maximum Steady Shaft Torque (Ft-Lbs)
Turbine Specific Speed (Metric Power Method, 20-200 typical)
Penstock Minimum Hydraulic Diameter (Inches)
Penstock Actual Flow Rate (GPM, CFS=GPM/448.8)
Penstock Actual Velocity (FPS)
Penstock Actual Reynolds Number (4600 or more required)
Head Available at Site (Feet)
Head Available at Site (PSI)
Penstock Actual Friction Head Loss (Feet)
Penstock Actual Friction Head Loss (PSI)
Penstock Specific Friction Head Loss (Feet per 100 Feet of Pipe)
Penstock Specific Friction Head Loss (PSI per 100 Feet of Pipe)
Head Available at Penstock Outlet (Feet)
Head Available at Penstock Outlet (PSI)
Turbine Nozzle Water Velocity (FPS)
Turbine Nozzle Water Jet Thickness (Inches)
Runner Entrance Channel Width (Inches)
Turbine Runaway Speed (RPM)
Banki Experimental Coefficient (0.075-0.100 typical)
Runner Length (Inches)
Runner Exterior Diameter (Inches)
Runner Interior Diameter (Inches)
Runner Hub Width (Inches)
Water Jet Thickness Inside Runner (Inches)
Water Jet Clearance from Shaft (Inches)
Water Jet Clearance from Runner Interior Diameter (Inches)
Blade Inlet Angle (Degrees, 30 is typical)
Blade Curvature Radius (Inches)
Blade Width (Inches)
Blade Pitch Circle Diameter (Inches)
Blade Pitch on Blade Pitch Circle Diameter (Inches)
Blade Spacing on Runner Exterior Diameter (Inches)
Blade Spacing on Runner Interior Diameter (Inches)
Blade Pipe Exterior Diameter (Inches)
Blade Pipe Section Angle (Degrees)
Number of Blades per Pipe Section
Blade Pipe Section Length (Inches)
Number of Blade Pipe Sections
Blade Pipe Total Length (Inches)
Weight of Runner (Lbs)
Maximum Blade Force (Lbs)
Maximum Shaft Force (Lbs)
Maximum Blade Bending Moment (In-Lbs)
Maximum Shaft Bending Moment (In-Lbs)
Borst Engineering & Construction LLC
Terms of Use