Professional Heat Exchanger
Calculations
Engineering-grade thermal analysis for DX evaporators, condensers, chilled water, hot water, and steam coils. Interactive 3D visualization, 2D technical drawings, and professional PDF reports.
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Five Specialized Calculators
Each calculator uses a dedicated thermal solver with industry-standard correlations, segmented simulation, and automatic energy balance verification.
DX Evaporator
Two-phase evaporation with Chen correlation, superheat zone with Gnielinski. R-410A, R-134a, R-404A, R-407C, R-22, R-449A.
DX Condenser
Three-zone model: desuperheating, condensation, subcooling. Full refrigerant-side pressure drop with Müller-Steinhagen & Heck.
Chilled Water
Wet and dry coil analysis with Threlkeld enthalpy potential method. Glycol correction for water-glycol mixtures.
Hot Water
Heating coil with Gnielinski water-side correlation. Temperature-dependent air and water properties.
Steam Coil
Condensing steam with Nusselt film correlation. Automatic condensate drainage calculation and steam trap sizing.
Dehumidifier Builder
Design complete dehumidification systems with automatic compressor selection from 21 Copeland scroll compressors.
DX Evaporator calculator showing capacity results, performance metrics, and heat transfer coefficients
3D Visualization & Technical Drawings
Interactive 3D models with real-time configuration, precise 2D dimensional drawings, and multi-format export including STL for CAD integration.
Interactive 3D Viewer
Rotate, zoom, and inspect your heat exchanger from any angle. Toggle visibility of tubes, fins, frame, manifolds, and air flow. Configure casing dimensions, header positions, and connection sizes in real-time.
- Real-time rotation, zoom & pan
- Toggle tubes, fins, frame, manifolds
- Configurable casing & header positions
- STL export for CAD integration
Precise 2D Technical Drawings
Three orthographic views (Front, Side, Top) with all critical dimensions. Professional engineering drawing format with dimension lines, annotations, and connection labels. Export as SVG, PNG, or PDF in A3 landscape format.
- Front, Side & Top orthographic views
- All critical dimensions (OAL, FH, FL, CH, CL, CD)
- Supply & Return connection labels
- Export: SVG, PNG, PDF (A3 landscape)
Performance Charts & Analytics
Visualize capacity breakdown, temperature profiles, heat transfer coefficients, fin efficiency, and pressure drops. Every calculation generates detailed charts for engineering analysis and documentation.
- Total capacity breakdown
- Temperature profile visualization
- Heat transfer coefficients (air, ref, overall)
- Fin & surface efficiency analysis
Engineering Features That Matter
Built by engineers, for engineers. Every feature is designed to improve accuracy and productivity.
Segmented Simulation
Element-by-element analysis for accurate wet/dry coil detection and two-phase heat transfer.
Auto Energy Balance
Bisection solver achieves 0.00% energy balance error. Automatic calibration adjustment.
Industry Correlations
Chen, Gnielinski, Threlkeld, Nusselt, Müller-Steinhagen & Heck. Validated against published data.
3D Visualization
Interactive Three.js 3D model with configurable components. STL export for CAD integration.
Technical Drawings
Professional 2D drawings with 3 orthographic views and all critical dimensions. SVG/PNG/PDF export.
PDF Reports
Professional reports with construction details, performance data, dimensions, and technical drawings.
Coil Comparison
Compare up to 4 coils side by side. Analyze capacity, pressure drop, and efficiency differences.
Rating & Sizing Modes
Rating mode for given flow conditions. Sizing mode to find optimal coil for target capacity.
Multi-Language & Units
Full English and Portuguese support. SI and Imperial unit conversion for all parameters.
Complete Project Management
Organize all your heat exchanger calculations in one place with automatic model codes, version history, and team collaboration.
Project Dashboard
All your projects in one place. Filter by coil type, search by name, and track status. Each project stores complete calculation inputs, results, and version history.
Dehumidifier Builder
Design complete dehumidification systems step by step. Select evaporator and condenser coils, then automatically match with the optimal Copeland scroll compressor from a database of 21 models.
- Step-by-step system configuration
- 21 Copeland scroll compressors database
- Automatic compressor matching
- Complete system performance analysis
Built on Industry-Standard Methods
Every correlation and method used in ExCoil is traceable to published engineering references.
Heat Transfer Correlations
Pressure Drop & Friction
Ready to Streamline Your Heat Exchanger Calculations?
Join engineers worldwide using ExCoil for professional thermal analysis. Five calculators, 3D visualization, technical drawings, and PDF reports — all in one platform.
No credit card required • 14-day free trial • Cancel anytime