Guide
Engineering Units
Absolute vs Gauge Pressure: Conversions and Common Input Errors
Absolute pressure is measured from a perfect vacuum, while gauge pressure is measured from the local atmospheric pressure, related by p(abs) = p(gauge)…
ENGINEERING TOPIC
Engineering Units
Unit conversions, dimensional analysis, and absolute and gauge pressure.
07 RESOURCES
Resources
Guide
Engineering Units
Converting Pressure Difference to Fluid Head
To convert a pressure difference to fluid head, divide the pressure change by the fluid's weight density: h = ΔP/(ρg). For fresh water…
Guide
Engineering Units
How to Check Engineering Equations with Dimensional Analysis
Dimensional analysis checks that both sides of an engineering equation carry the same dimensions: a mismatch proves the equation is wrong, while a…
Guide
Engineering Units
Significant Figures and Rounding in Engineering Calculations
Significant figures are the digits in a number that carry meaningful information about its precision, and rounding trims calculated results so they do…
Guide
Engineering Units
Engineering Unit Conversions: A Practical Guide for Process Calculations
Unit conversion is the backbone of every chemical‑process calculation. This guide explains the fundamentals of engineering units, how to read and apply conversion…
Guide
Engineering Units
Temperature vs Temperature Difference: Celsius, Kelvin, and Fahrenheit
A temperature is a position on a scale whose zero may be an arbitrary convention; a temperature difference is a change with a…
Guide
Engineering Units
Chemical Engineering Calculations: Units, Methods, and Worked Examples
Chemical engineering calculations convert descriptions of processes into dependable numbers using three tools: consistent units, conservation laws for mass and energy, and reliable…