Abstract
Infrared (IR) dryers are widely used in the paper industry for drying coated paper grades.
However, there is limited knowledge regarding the efficiency of IR dryers. This study was
undertaken to investigate the radiation efficiency and the total efficiency of electric IR dryers.
Radiation efficiency was measured in the laboratory and on an industrial machine. The results
indicate that radiation efficiency increases with increasing power and is just above 60% at full
power. Total efficiency—the fraction of supplied power that ends up in the paper web—was
measured on a small off-machine coater. The results indicate a total efficiency of approximately
40%. Problems and experimental techniques are discussed, and recommendations for future
evaluations are presented.
However, there is limited knowledge regarding the efficiency of IR dryers. This study was
undertaken to investigate the radiation efficiency and the total efficiency of electric IR dryers.
Radiation efficiency was measured in the laboratory and on an industrial machine. The results
indicate that radiation efficiency increases with increasing power and is just above 60% at full
power. Total efficiency—the fraction of supplied power that ends up in the paper web—was
measured on a small off-machine coater. The results indicate a total efficiency of approximately
40%. Problems and experimental techniques are discussed, and recommendations for future
evaluations are presented.
| Original language | English |
|---|---|
| Pages (from-to) | 89-107 |
| Journal | Tappi Journal |
| Volume | 81 |
| Issue number | 8 |
| Publication status | Published - 2000 |
Subject classification (UKÄ)
- Chemical Engineering