ACADEMY SERIES · EPISODE 1Psychrometrics & Sizing

Moisture Load Calculation

Selecting an industrial dehumidifier starts with an accurate moisture load calculation. This episode walks through the seven moisture sources, a worked infiltration example and how the target dew point drives the choice of technology.

Published: 4 October 2026Narration: Turkish and English4:12

In this video

  • Relative humidity changes with temperature, so moisture load calculations are carried out with the humidity ratio (g/kg dry air).
  • The moisture load of a space comes from seven independent sources: infiltration, planned ventilation, water evaporation, occupants, building diffusion, hygroscopic materials and combustion.
  • In the worked example, a 600 m³ production area with 0.25 air changes per hour and a 4.4 g/kg humidity ratio difference gives an infiltration load of 792 g/h.
  • A safety factor of 15–25% is added to the total; margins above 50% lead to oversizing and short cycling.
  • Refrigerant dehumidifiers work efficiently above a +10 °C dew point but cannot go much below +5 °C; lower targets require silica gel rotor systems, down to a −60 °C dew point.

Related

More from this series

Relative Humidity and Health4:58
Academy Series · Ep. 2
Relative Humidity and Health

We usually judge indoor comfort by temperature alone, yet relative humidity shapes our health, productivity and the life of the building just as much. This episode uses the Sterling chart to cover the effects of low and high humidity, the ideal range and how humidity is controlled in both directions.

Health & Indoor Climate · 3 October 2026
Dehumidification Technologies4:59
Academy Series · Ep. 3
Dehumidification Technologies

There are three main technologies for industrial dehumidification: desiccant rotor, condensing and pool units. This episode compares their operating principles, achievable dew points, strengths and limits, and shows how the target dew point and the ambient temperature drive the right choice.

Technology Selection · 4 October 2026
Dehumidifier Selection4:52
Academy Series · Ep. 4
Dehumidifier Selection

Selecting an industrial dehumidifier is never just a single capacity figure. This episode covers eight criteria, from target relative humidity and dew point, moisture load and technology to reactivation energy, casing, automation and service, and a five-step decision process.

Equipment Selection · 4 October 2026
How to Calculate Humidification Load5:46
Academy Series · Ep. 5
How to Calculate Humidification Load

In winter, heated indoor air can drop below 15% relative humidity. This episode calculates the humidification load step by step from the absolute humidity difference and the volume of air entering the space, works through two examples with Türkiye climate data, and covers economisers, unit selection and the energy budget.

Humidification Load · 5 October 2026
Humidity Control in Swimming Pools5:14
Academy Series · Ep. 6
Humidity Control in Swimming Pools

In an indoor pool, the heated water surface evaporates all day; this evaporation cannot be prevented, only controlled. This episode calculates evaporation with the VDI 2089 formula, works through a 32 m² villa pool example, and covers hall conditions, chloramines and corrosion, unit selection, air distribution and maintenance.

Pool Humidity Control · 5 October 2026
Electrode or Resistive?5:25
Academy Series · Ep. 7
Electrode or Resistive?

Both steam humidifier technologies use about 0.75 kWh per kilogram of steam; the difference lies in water quality, control accuracy and maintenance. This episode covers how each technology works, the water conductivity band, scale management, ten years of consumables and a decision flow for selection.

Steam Humidification · 5 October 2026

More videos

← All videos