☁ Dryers

🗂 Design & topic

Drying Process Engineering Calculators

Practical design tools for material / heat balances, hot-air furnaces, dedusting, rotary drum dryers, molecular-sieve adsorption dryers, heat-exchange networks (steam / thermal-oil) and cost evaluation.

Calculation Tools

Convection Drying Theory

Mass & heat balance over a hot-air dryer, plus hot-air furnace, dedusting and single-drum dryer sizing.

Conduction Drying Theory

Conduction drying via hot-air exchange or steam exchange, with wall heat-exchanger area.

Rotary Drum Dryer

Thermal process for a barrel dryer: throughput, evaporation, heat per kg of water, coal & gas consumption.

Heat & Piping Calculator

Heat conversion kcal/kW, thermal-oil flow, pipe diameter, steam / natural gas / LPG consumption.

Molecular-Sieve Dryer

Adsorber tower diameter (Ergun), water per cycle, bed height and regeneration-gas flow.

Two-Stage Drying (Steam/Oil)

Heating + isothermal evaporation stages, LMTD, heat duty and heat-transfer area for steam or thermal oil.

General Drying Calculation

Evaporation and theoretical/actual dry-air consumption with heat balance (kcal basis).

Spray-Drying Cost

Added operating cost of spray drying with coal vs. natural-gas firing, per ton of product.

General & Selection

Dew Point & Humidity Converter

Convert dew point / humidity: relative humidity to dew point (Magnus), moisture content in vol%, ppm and absolute humidity.

Moist-Air Psychrometrics

From temperature & humidity: moisture content, dew point, enthalpy, adiabatic saturation temperature of humid air.

Drying Rate & Time

Constant-rate and falling-rate drying periods, estimate total drying time from critical and equilibrium moisture.

Drying Scheme Comparator

Compare convection, conduction and spray drying on heat demand, energy cost and efficiency for the same evaporation task.

Engineering Unit Converter

Convert flow, pressure, heat, power, temperature, length and mass units used in drying engineering.

Dryer Series Selection

Selection table for sample dryers (MDH / DM / ME / MD / PD / HD) by flow, power and dew point.

Dry Air Properties

Density, specific heat, thermal conductivity, viscosity and Prandtl number of dry air vs. temperature.