H.E.R.P.S — Engineering Validation & Design Optimization Summary
Volume 22 — Priorities 1–3 Integrated Analysis Sheet
Hybrid Energy Recovery Pump System (H.E.R.P.S)
Priority 1 — Energy Balance & Physics Validation
Full Energy Balance Calculation
| Item | Description | Power (kW) | Efficiency (%) | Notes |
|---|---|---|---|---|
| 1 | Pump Shaft Input Power | 150.0 | — | Drive Input |
| 2 | Pump Hydraulic Power | 125.0 | 83.3 | Piping Losses Included |
| 3 | Turbine Shaft Output | 112.5 | 90.0 | Turbine Efficiency |
| 4 | Turbine Hydraulic Power | 125.0 | 90.0 | Piping Losses Included |
| 5 | Generator Electrical Output | 91.2 | 81.0 | Delivered to Bus Bar |
Energy Losses Breakdown
| Loss Type | Power Loss (kW) | % of Input |
|---|---|---|
| Piping & Fittings | 12.5 | 8.3% |
| Turbine Losses | 12.5 | 8.3% |
| Generator Losses | 21.3 | 14.2% |
| Drive / Electrical Losses | 71.3 | 47.5% |
Net Electrical Power Available: 91.2 kW
Overall System Efficiency: 60.8%
Output is less than input — compliant with the First Law of Thermodynamics.
Priority 2 — Fluid & Mechanical Engineering
Pump Curve & System Curve
- Flow Rate: 150 m³/h
- Pump Speed: 2900 RPM
- Pump Head: 60 m
- Pump Efficiency: 83.3%
- NPSHA: 5.0 m
Hydraulic Calculations
| Parameter | Value | Unit |
|---|---|---|
| Flow Rate | 150 | m³/h |
| Total Head | 60 | m |
| Turbine Head | 55 | m |
| System Losses | 5 | m |
| Net Head | 55 | m |
Fluid Properties (Water)
- Density: 998 kg/m³
- Kinematic Viscosity: 1.003×10⁻⁶ m²/s
- Temperature: 25°C
- Vapor Pressure: 2.34 kPa
Mechanical Engineering — Shaft Design
- Material: 42CrMo4 Steel
- Yield Strength: 1000 MPa
- Ultimate Strength: 1070 MPa
- Diameter: 75 mm
- Length: 1550 mm
- Speed: 2900 RPM
- Torque: 425 N·m
- Safety Factor: 2.41
Stress Analysis
| Type | Value | Unit |
|---|---|---|
| Bending Stress | 142 | MPa |
| Shear Stress | 59 | MPa |
| Combined Stress | 151 | MPa |
Critical Speed: 3580 RPM (PASS)
Axial Deflection: 0.18 mm (PASS)
Mechanical design validated for continuous operation.
Priority 3 — Manufacturing (Tolerances & Materials)
Shaft Dimensions & Tolerances
- Ø75 h6
- Ø70 h6
- Ø85 h6
- Total Length: 1550 ± 0.2 mm
Keyway
- Width: 20 P9
- Depth: 11 mm
Bearing Seats
| Location | Diameter | Tolerance | Fit |
|---|---|---|---|
| Bearing 1 | Ø75 | h6 | Press Fit |
| Bearing 2 | Ø75 | h6 | Press Fit |
| Bearing 3 | Ø75 | h6 | Press Fit |
Material Specifications
| Component | Material | Standard | Heat Treatment |
|---|---|---|---|
| Shaft | 42CrMo4 | EN 10083‑3 | QT (28–32 HRC) |
| Pump Casing | 42CrMo4 | EN 10083‑3 | — |
| Turbine Casing | SS316L | ASTM A351 | — |
| Generator Frame | SS316L | ASTM A351 | — |
| Base Frame | SS400 | JIS G3101 | — |
General Tolerances
- Linear: ±0.05 mm
- Flatness: 0.03 mm
- Surface Finish (Machined): 0.8 µm
- Surface Finish (Non‑Machined): 3.2 µm
System Summary
- Input Electrical Power: 150.0 kW
- Net Electrical Power Available: 91.2 kW
- Overall System Efficiency: 60.8%
- Status: Physically Valid & Efficient
Design Compliance
- ASME B31.3 — Process Piping
- ASME BPVC — Pressure Vessel
- ISO 12100 — Machinery Safety
Engineering Approval
- Designed by: Engineering Design Team
- Checked by: Lead Mechanical Engineer
- Approved by: Chief Engineer
- Date: May 2025
- Revision: A
Blueprint Access & Licensing
Volume 22 of the H.E.R.P.S Engineering Validation & Optimization Summary is part of the complete engineering blueprint package available exclusively through BlueprintsMarket.com.
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© Paul Smith — Alpha & Omega Limited — PlatformClouds.com — Conceptual Engineering Preview — Not Approved for Manufacturing