Cooling System Flow Rate & Heat Rejection Estimator
System Specifications
Cooling Analysis & Recommendations
Flow Rate
0
m³/h
Pump Power
0
kW
Annual Cost
0
USD
System Performance Metrics
System Efficiency
Cost Efficiency
Maintenance Score
Performance
System Parameters Overview
Technical Specifications
Flow Rate (L/s): 0
Flow Rate (GPM): 0
Temperature ΔT: 0 °C
Heat Exchanger Area: 0 m²
Recommended Pump: -
Based on thermodynamic principles and engineering standards.
Recommended Pumps
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Analyzing cooling requirements...
Core Calculation Formula
The calculator uses thermodynamic principles to determine cooling system requirements:
Mass Flow Rate = Heat Load / (Specific Heat × Temperature Difference)
Volume Flow Rate = Mass Flow Rate / Coolant Density
Step-by-Step Calculation Process
- Input Collection
- Application Type (Marine Engine, Generator, Industrial, etc.)
- Heat Load (kW)
- Inlet Temperature (°C)
- Outlet Temperature (°C)
- Coolant Type (Fresh Water, Sea Water, Glycol, etc.)
- System Pressure (bar)
- Environment (Standard, Marine, High Temp, etc.)
- Safety Factor (%)
- Operating Hours (hrs/day)
- Thermodynamic Calculations
- Temperature Difference (ΔT) = Outlet Temp – Inlet Temp
- Mass Flow Rate (kg/s) = Heat Load / (Specific Heat × ΔT)
- Volume Flow Rate (m³/h) = Mass Flow Rate × 3600 / Coolant Density
- Application-Specific Adjustments
- Heat Load Factor (varies by application type)
- Flow Rate Factor (varies by application type)
- Safety Factor adjustment
- Environment factors (fouling, temperature, maintenance)
- Pump Power Calculation
- Pump Power (kW) = (Flow Rate × Density × Gravity × Head) / (Efficiency × 1000)
- Head = System Pressure × 10 (meters of water)
- Heat Exchanger Area Calculation
- Area (m²) = (Heat Load × 1000) / (Heat Transfer Coefficient × ΔT × Heat Exchanger Factor)
Coolant Properties Database
| Coolant Type | Specific Heat (kJ/kg°C) | Density (kg/m³) | Efficiency | Cost Factor |
|---|---|---|---|---|
| Fresh Water | 4.186 | 1000 | 0.85 | 1.0 |
| Sea Water | 3.93 | 1025 | 0.75 | 1.2 |
| 50% Glycol | 3.56 | 1060 | 0.90 | 2.5 |
| 30% Glycol | 3.85 | 1040 | 0.88 | 1.8 |
| Oil | 1.88 | 900 | 0.82 | 3.0 |
Application Factors
| Application | Heat Load Factor | Flow Rate Factor | Safety Factor | Typical ΔT |
|---|---|---|---|---|
| Marine Engine | 1.2 | 1.1 | 1.3 | 10°C |
| Generator | 1.0 | 1.0 | 1.2 | 8°C |
| Industrial | 1.1 | 1.05 | 1.25 | 12°C |
| Hydraulic | 0.9 | 0.95 | 1.15 | 15°C |
| Air Conditioning | 0.8 | 0.9 | 1.1 | 5°C |
| Power Plant | 1.3 | 1.2 | 1.4 | 7°C |
Environment Factors
| Environment | Temperature Factor | Fouling Factor | Maintenance Factor |
|---|---|---|---|
| Standard | 1.0 | 1.0 | 1.0 |
| Marine | 0.9 | 0.7 | 1.3 |
| High Temp | 0.8 | 0.8 | 1.2 |
| Corrosive | 0.95 | 0.6 | 1.5 |
| Clean Room | 1.1 | 1.2 | 0.9 |
Key Formulas
- Mass Flow Rate:
Heat Load / (Specific Heat × ΔT) - Volume Flow Rate:
Mass Flow Rate × 3600 / Density - Pump Power:
(Flow Rate × Density × 9.81 × Head) / (Efficiency × 1000) - Heat Exchanger Area:
(Heat Load × 1000) / (Heat Transfer Coefficient × ΔT) - Annual Energy Cost:
Pump Power × Operating Hours × 365 × Energy Cost per kWh
Performance Metrics
- System Efficiency: Based on coolant properties and environmental factors
- Cost Efficiency: Annual energy cost relative to system performance
- Maintenance Score: Based on corrosion factors and environmental conditions
- Performance: Based on temperature difference relative to typical values
Pump Recommendations
Based on calculated requirements:
- Centrifugal pumps for standard applications
- Positive displacement for viscous fluids
- Marine-certified for marine environments
- Recommendations include flow range, head range, and price estimates
Technical Implementation
- Uses Chart.js for visualization
- jQuery for DOM manipulation
- Bootstrap for responsive design
- Client-side JavaScript processing
- Input validation and error handling
- Thermodynamic calculations with proper unit conversions