SVIT flash vacuum chamber driers
Timber industry applies various methods of timber drying. They are stoving, air seasoning, vacuum drying, and flash vacuum drying. All the methods are different in the equipment and drying technology. Nevertheless, all drying methods are based on power-consuming phase evaporation.
Unlike other methods, flash vacuum drying implies vacuum and impulse treatment of timber due to the volume ratio of the drying chamber and the vacuum one. Thereat, a vacuum pump heightens the vacuum in the drying chamber, and 70-80% dehydration of timber takes place without phase transformation (evaporation).
Pressure gradient rate and value are very important for a quicker mass transfer. The higher the rate becomes, the less water evaporates (by 5% less), and the more water to be removed turns into fog.
We produce SVIT chamber driers based on flash vacuum drying. SVIT belongs to flash timber driers.
SVIT characteristics:
- Drying to any final water content
- Full automation (computer monitoring)
- Minimum power consumption
- Drying timber of any species and size
- Drying thick softwood square logs within 3 days
- High-quality final product (lack of cracking, starting, winding or other defects)
- 100% ecological and fire safety
- Easy transportation and installation
- Payback time is 10-12 months
1 working chamber can house:
| Section, mm | Volume, m3 |
| Board | |
| 32õ150 | 9,6 |
| 40 õ150 | 10,2 |
| 50 õ150 | 9,5 |
| Square log | |
| 100 õ150 | 10,2 |
| 220 õ 220 | 10,3 |
| Round log | |
| d=320 | 9,76 |
Today we produce the following options of chamber driers: SVIT-10 (v=10 m3), SVIT-10/2 (v=20 m3), SVIT-10/4 (v=40 m3).
You need 5õ15 m of free space to install SVIT-10, 10õ20 m for SVIT-10/2, and 15õ30 m for SVIT-10/4.
There are no specific requirements to communications.
Chamber drier configuration:
- Working chamber
- Vacuum chamber
- Transport, vacuum and compressed-air systems
It is not obligatory to build a drying plant since a shed will be enough. The surrounding temperature must not go below 0°Ñ for proper operation of the drier.
SVIT Specifications
| Property | SVIT-10 | SVIT-10/2 | SVIT-10/4 |
| Monthly output when drying softwood 40 õ 150 õ 6100, m3 | 660 | 1300 | 2500 |
| Total capacity, kW
heating electric |
81 38 |
162 76 |
324 152 |
Installation requirements
| Property | SVIT-10 | SVIT-10/2 | SVIT-10/4 |
| Overall and connecting dimensions, m (look at the diagram below) | A = 5,2 B = 5 C = 6,6 D = 2,2 H = 3 |
A = 8,4 B = 5,6 C = 6,6 D = 2,2 H = 3 |
A = 8,4 B = 5,6 C = 12,5 D = 2,2 H = 3 |
| Concrete platform for a drier, m
A drier weight, t |
5 õ 15
20 |
10 õ 20
34,9 |
15 õ 30
55,8 |
| Water network
Pressure, not less, atm. Flow rate, not less, l/hour Temperature , not less, °Ñ |
1,5 1000 20 |
1,5 1400 20 |
1,5 3000 20 |
| Total capacity, kW
heating electric |
115
81 34 |
227
162 65 |
450
324 126 |
Diagram. Overall and connecting dimensions of a SVIT drier
| SVIT-10 | SVIT-10/2 | SVIT-10/4 |
 |
 |
 |
We can produce made-to-order hot-water camber driers.
SVIT Flash vacuum driers
