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Introduction

in Science of the drying

INDEX

Science of the drying – Table of Contents
- Ⅰ. Basic knowledge of the drying
  - 1.How does the drying progress?
  - 2.Property of the humid air
- Ⅱ. Hot air drying and Infrared ray drying

More quickly, More uniformly, demanded from the dry process in the manufacture.
In order to realize it, it is important to know how heat and a substance will move in the from internal to surface for dryness.
In addition, it is important to know what kind of process a dry object changes by to solve troubles such as non-drying, crack, foaming, transformation to occur by a dry process.

This seminar describes a fundamental theory about the heat flow and mass transfer in material as that foundation, and explains the practical use method.

Science of the drying – Table of Contents

Ⅰ. Basic knowledge of the drying

1.How does the drying progress?

1-1. What is drying.
1-2. The phase shift of the ustulation.
1-3.How to expressions the moisture in the material.
1-4. Change of weight and the temperature by the drying.
1-5. Equilibrium moisture content and Critical moisture content – Influence of temperature and relative humidity.
1-6. The local moisture content and the average moisture content.
1-7. Drying characteristic curve – Relation between a drying rate and moisture content.
1-8. Why is the constant drying period. – Moisture movement in wet material.
1-9. How to expressions the constant drying period.

2.Property of the humid air

2-1.What is the humidity?
2-2.Vapor included in the air has a limit.
2-3.Ask for saturation water vapor pressure.
2-4.The relative humidity
2-5.The absolute humidity
2-6.Relationship of absolute humidity and the relative humidity.
2-7.Psychrometer and Hygrometer
2-8.The principle of the Psychrometer
2-9.Latent heat, Sensible heat, and Evaporation heat ( or Vaporization heat )
2-10.The Psychrometric charts
2-11.Dew point and Dew point meter

Ⅱ. Hot air drying and Infrared ray drying

3.Basic knowledge required for optimization of the drying process

3-1.Heat transfer and Mass transfer
3-2.Evaporation of water
3-3.Heat balance equation of the drying
3-4.5 patterns of the drying curve
3-5.Balance of the process
3-6.Importance of dehydration
3-7.Three types of drying 2.Drying of the surface attached water
3-8.Three types of drying 3.Drying of the paint film and Membrane
3-9.The 6 Fundamental law and the 4 thermodynamic law about drying.

4.How does Hot air drying progress?

4-1.The air and the nitrogen
4-2.Drying speed and wind speed of the hot air
4-3.Drying speed and temperature of the hot air
4-4.Drying speed and swept area of the hot air
4-5.Drying speed and angle of the hot air

5.How does Infrared ray drying progress?

5-1.Infrared rays wavelengths and water
5-2.Heat balance equation of Infrared ray drying
5-3.Efficient method of Infrared ray drying

6.The hot air drying and the infrared ray drying – combination of convection heat transfer drying and radiation heat transfer drying

6-1.The most efficient drying method-Combination of the hot air drying and the infrared ray drying