Engineering Resources
Educational material for HVAC engineers. Each topic links to the relevant ExCoil tool for hands-on practice.
View Full Documentation & GuidesPsychrometrics Explained
Understanding moist air properties, humidity ratio, wet bulb temperature, enthalpy, and dew point. How HVAC engineers use psychrometric charts for system design.
Topics covered
Heat Exchanger Basics
Introduction to finned-tube heat exchangers: tube geometry, fin types, tube patterns, and thermal performance parameters.
Topics covered
Cooling Coil Design
How to size cooling coils for air conditioning: sensible and latent heat, SHR, apparatus dew point, and coil selection methodology.
Topics covered
Dehumidification Theory
Understanding dehumidification in HVAC systems: cooling-based dehumidification, desiccant systems, and hybrid approaches.
Topics covered
Refrigeration Fundamentals
Vapor compression cycle, refrigerant properties, evaporator and condenser design, COP, and superheat/subcooling.
Topics covered
Coil Circuiting Explained
How coil circuiting affects thermal performance, pressure drop, and refrigerant distribution. Same-side vs opposite-side connections.