Documentation & Guides
Comprehensive guides for every calculator and feature in ExCoil. Learn how to design heat exchangers, use the 3D viewer, configure circuitry, and integrate via API.
Calculators
Chilled Water Coil Calculator
Complete guide to designing and sizing chilled water coils for air handling units, fan coil units, and central cooling systems.
Hot Water Coil Calculator
Step-by-step guide for sizing hot water heating coils, including glycol mixtures, flow rates, and pressure drop analysis.
DX Evaporator Calculator
Detailed guide for direct expansion evaporator coil design: refrigerant selection, superheat control, two-phase heat transfer, and capacity balancing.
DX Condenser Calculator
Comprehensive guide for air-cooled condenser coil design: desuperheating, condensation, subcooling zones, and performance optimization.
Steam Coil Calculator
Guide for steam heating coil selection and sizing: steam pressure, condensate management, face velocity, and coil configuration.
Dry Cooler / Fluid Cooler Calculator
Guide for dry cooler and fluid cooler sizing: approach temperature, glycol concentration, fan power, and ambient conditions.
Shell & Tube Heat Exchanger Calculator
Comprehensive guide for designing, rating, and sizing shell and tube heat exchangers using the Bell-Delaware method with TEMA standards.
Features & Tools
2D Technical Drawings
How to generate, customize, and export 2D technical drawings with dimensions, annotations, and multiple views.
3D Viewer & STEP/STL Export
Interactive 3D visualization of heat exchangers with orbit controls, section views, and export to STEP and STL formats for CAD integration.
Coil Circuitry Designer
Design and optimize coil tube circuitry: circuit count, feed/return positions, counter-flow vs parallel-flow, and visualization of tube connections.
Bill of Materials & Cost Estimation
Automatic BOM generation with material quantities, weights, and cost estimation based on configurable material prices.
API Key Management
How to generate, manage, and use API keys for programmatic access to ExCoil calculations from your ERP or custom systems.