RETORTS & WOOD KILN DRYERS » WOOD KILN DRYER

Our compact wood dryer is based on the standard size of a container.

The wood dryer will kiln dry 12 cubic metres of wood and operates at a temperature of between 70 – 85 degrees C.

The dryer employs 6 fans for maximum efficiency.

To ensure heat is not lost during the kiln drying process the kiln dryer is fully insulated (including the flooring which has 100mm of insulation).

Drying fans:
Of compact design created by the combination of 6 motors with the matched direct drive wrap around impeller hub with speed controls with mounting plate, motor support and finger proof guard protected by cataphoresis primer and black polyester paint finish. Stainless steel screws.
The 6 x 355mm impeller fans are dynamically balanced (meeting ISO 1940 standard) giving vibration-free operation.
All the motors are IP65, Class F insulation, equipped with thermal protection.

Exhorts fan:
Unlike conventional wood dryers, we use an exhort fan to remove the stale moisture from the wood but also bring in new fresh air from the rear vent.
Electrical supply: Single phase 230V-50Hz, All fans are wired with heatproof cabling with speed control. Speed:1290 (r.p.m.) Sound: 68 (dB(A)).
Maximum: 650 watts.

Air to air heater:
Our air to air 34Kw heater, which has been modified for our use in the 20ft container, has the capacity to heat air intake.
10kg - fuel consumption per hour - maxim heat 95 degree C – air heat exchange input 2,200 cubic metres per hour. 2 x exhaust ports 180mm.
Also fitted with a fully stainless steel chimney total height 4 metres.

Internal Insulation:
All sides of the container are fully insulated to 40mm with steel lining. Flooring is fully insulated with 100m top with 25mm marine ply.

Internal build:
All the internal build frame is fully galvanized to stop internal moisture from penetrating for long life.

Air circulation:
We have given this drier the maximum air flow we can of up to 30,000 cubic metres per hour but with the variable speed control can reduce this to 15,000 cubic metres per hour.

Trials:
Our trials were with hornbeam and ash with some oak wood.
We tried to give an all round trial the (Ash = 16%, Hornbeam = 18%, Oak = 22%) from an average moisture content of 31% to 29%
These tests were a mixture of cages over 3 working day (8Hrs) total of (24Hrs) at 65-80 degree C.
Our 30Kw air to air heater that we had modified by the manufactures gave a steady heat over 3 hrs with a full fire box.
We used kiln dried fire wood which gave us good content heat (total amount of wood over 2hrs = 8-10kgs)