Darcy-Weisbach Equation Explained
Darcy-Weisbach equation explained for pipe pressure drop calculations, including friction factor, Reynolds number, pipe roughness, fittings, valves, and total pressure loss in real piping systems.
Ing. Ivet Miranda
Ing. Ivet Miranda is a chemical engineer with 20+ years of experience in chemical engineering, process safety, and plant engineering.
Purging vs Inerting vs Blanketing: Differences
Purging replaces the atmosphere, inerting reduces oxygen below flammable limits, and blanketing maintains a protective inert gas pressure over time.
Nitrogen Purging and Inerting Calculators
Engineering calculators for vacuum purging, pressure purging, and nitrogen flushing, developed to estimate oxygen reduction during inerting and purging operations
5 Things to Know About Reynolds Number
The Reynolds number is one of the most important parameters in fluid mechanics. This article explains what it represents, how it is calculated, and why engineers use it to distinguish laminar and turbulent flow.
Shell and Tube Heat Exchanger Design
A shell and tube heat exchanger transfers heat between two separated fluids using a tube bundle inside a cylindrical shell. This article explains its construction, flow arrangements (1–1 and 1–2), and key design principles used in chemical engineering.
The 4 Laws of Thermodynamics
The four laws of thermodynamics establish the physical boundaries of engineering systems, defining equilibrium, energy conservation, irreversibility, and absolute entropy.
Bernoulli Principle Example: Venturi Meter
A clear Bernoulli principle example illustrating the Venturi effect and the relationship between pressure, velocity, and pipe geometry.
The Law of Poiseuille and Laminar Pipe Flow
Poiseuille’s law explains why pressure continuously decreases in laminar pipe flow due to viscous energy dissipation, even in pipes with constant diameter and steady velocity.
LOPA & SIL: Practical Examples
A LOPA analysis is required only when the residual frequency of a major accident scenario remains too high after all independent protection layers are considered. This article explains how HAZOP identifies the hazardous scenarios, how LOPA quantifies the risk gap, and when a SIL-rated safety function becomes necessary—illustrated through two practical process examples.
Safety Interlocks: From P&ID to Control Logic
Cryogenic VOC abatement systems are highly effective but face operational limits when CO₂ or water freezes at low temperatures. This article explores how molecular sieves complement cryogenic units by removing critical impurities and ensuring safer, cleaner, and more efficient gas purification across complex industrial vent streams.