Engineering Fundamentals
Understand the theory, equations, methods and engineering principles behind ChemProCal calculations.
All Fundamentals
30 ArticlesDimensionless Numbers in Chemical Engineering: Transport Phenomena Guide
Master the essential dimensionless numbers in chemical engineering???Reynolds, Prandtl, Schmidt, Nusselt, Sherwood, Peclet, and Froude. Understand their physical significance, boundary …
Compressor Sizing & Power Calculation: Complete Engineering Guide
Compressor sizing requires thermodynamic analysis of compression paths, gas properties, pressure ratio, efficiency, discharge temperature and driver power. This guide …
Control Valve Sizing for Liquids (ISA 75.01)
Understand liquid Cv calculations, cavitation, and flashing in control valves.
Control Valve Sizing for Gases
Learn about the ISA equations for gas control valves, expansion factors, and choked flow phenomena.
Steam Tables: IAPWS-IF97 Formulations
Understand the international standards for water and steam properties and their application in power cycles.
Compressor Sizing: Polytropic & Isentropic Work
A deep dive into gas compression thermodynamics, efficiency, and absorbed power calculations.
Heat Exchanger Sizing: LMTD & U-Values
Understand the Log Mean Temperature Difference (LMTD), overall heat transfer coefficients, and exchanger area calculations.
Two-Phase Flow: Regimes & Pressure Drop
Learn about Lockhart-Martinelli parameters, flow regimes (slug, annular, stratified), and multiphase pressure drop.
Smart Pipe: Liquid Hydraulics, Friction Loss & Pipeline Sizing Theory
Explore the Darcy-Weisbach equation and Colebrook-White friction factors for precise liquid pipeline sizing.
Gas Pipeline Sizing: Friction & Compressibility
A detailed look at compressible flow equations, including Weymouth and Panhandle, for gas pipeline sizing.
Restriction Orifice Sizing & Choked Flow
Learn the fluid dynamics behind pressure breakdown and flow limitation using restriction orifices.
Centrifugal Pump Hydraulics & NPSH
A comprehensive guide to pump head, fluid power, and Net Positive Suction Head (NPSH) calculations.
Psychrometrics: Air and Moisture Thermodynamics
Understand the relationships between dry bulb, wet bulb, relative humidity, and enthalpy in air-water vapor mixtures.
Equation of State (EOS) & Real Gas Properties Theory: Peng-Robinson & Beyond
Explore the core thermodynamic equations, including Peng-Robinson and SRK, for accurately predicting gas behavior.
Cooling Tower Design & Sizing: Thermodynamic Theory
Learn the core principles of cooling tower heat and mass balance, including evaporative loss, drift, blowdown, and parasitic power calculations.
Gas Scrubber Design & Sizing: Theory, Demister Mechanics & Equations
Learn the core engineering principles behind gas scrubber design, including droplet removal, mist eliminators, and vapor capacity.
Vertical Separator Sizing: Principles & Calculations
A comprehensive overview of vertical separator sizing, analyzing uniform gas flow dynamics, liquid holdup, and space efficiency.
Separator Utilities: Partial Volumes, Interfacial Area and Gas Capacity
A deep dive into the isolated mathematical equations governing horizontal vessel partial volumes and Souders-Brown gas capacity limits.
Knock-Out (KO) Drum Sizing: Gravity Separation Theory & Engineering Calculations
Learn how to size Knock-Out Drums for compressor suction and flare headers, utilizing gravity-based separation principles without internals.
Horizontal Separator Sizing: Principles & Calculations
A detailed guide to the design of two-phase and three-phase horizontal separators, including chord area geometry and Stokes Law settling.
Flash Drum Sizing & Thermodynamics: A Complete Engineering Guide
A comprehensive guide to flash drum thermodynamics, phase splitting, and vessel sizing methodology, including the governing equations and constraints.
How to Calculate Pressure Drop in Pipes: Complete Engineering Guide for Process Engineers
A comprehensive engineering guide covering Bernoulli's equation, Darcy-Weisbach, minor losses, and a full pump discharge calculation example.
Pressure Drop Through Pipe Fittings: Understanding K-Factor, Equivalent Length, 2K Method, and Real-World Hydraulic Design Applications
Learn how to accurately calculate pressure drop through pipe fittings by comparing the K-Factor, Equivalent Length, and 2K/3K methods with …
Two-Phase Flow: Predicting Regimes, Slugging & Line Sizing Hydraulics
A deep dive into the Taitel-Dukler mechanistic model and the complexities of multiphase pressure drop.
Mastering Gas Line Sizing & Compressible Flow: Theory, Equations & Practice
Learn how isothermal gas equations and Mach number limits prevent acoustic vibration and choked flow.
The Fundamentals of Liquid Line Sizing
Discover the hydraulic physics and AI heuristics behind safe and efficient incompressible fluid piping.
Darcy Friction Factor: Colebrook-White, Swamee-Jain & Churchill Compared
Master Darcy and Fanning friction factor calculations in pipe hydraulics. Compare iterative Colebrook-White, explicit Swamee-Jain, and universal Churchill correlations across …
The Schmidt Number (Sc): Viscosity vs. Diffusivity
Decode the Schmidt number, the critical dimensionless parameter that dictates whether momentum or mass diffuses faster in a fluid.
HTU and NTU: Designing Packed Columns
Forget theoretical trays. Learn how to size the height of a packed absorption column using the Height of a Transfer …
Packed Column Hydraulics: Flooding & Pressure Drop
Design absorption scrubbers safely by understanding the Generalized Pressure Drop Correlation (GPDC) and avoiding catastrophic column flooding.