Dehumidifying drying kilns


Dehumidifying drying kilns belong to modern technologies for drying all types and humidity of wood.


Condensation of water (dehumidification) is used for separating moisture from wood, without external air exchange.


All our drying kilns include: highly insulated aluminum construction, reversible heating and ventilation technology, maximum quality and drying performance, environmentally friendly solutions and energy efficiency.


  • Drying all types and humidity of timber
  • Drying with a heat pump of the most modern construction
  • Chamber capacity from 30 to 120 m3 per drying cycle
  • Depending on the available energy for heating, 3 models are made:
    Nigolux with electric heater for heating the dryer
    Nigolux-K1 with electric heater and smaller hot water heater in the heat pump
    Nigolux-K2 with electric heater and standard hot water heaters on the dryer
  • Working medium: electricity, hot water system 90 / 70C for models K1 and K2
  • Standard dryer width: 4.6 / 6.6 / 8.6 / 10.6 / 13.0 m
  • Standard depth of dryer: 7.0 / 8.5 m
  • Stacking height: 4.1 m
  • Dryers can be constructed according to the customer’s request
  • Automatic control of the drying process via the
    MC-2000 or MC-3000 automatic controller for each dryer individually
  • Remote monitoring and control on a PC using Nigos DryerManager software, via RS485 standard

With a minimum energy consumption (100 to 250kWh / m3 of material for the entire drying cycle), very high quality and fast enough drying of all types of material is achieved. Most important part of a dehumidifying kiln is a heat pump. Air in the kiln passes through the load of timber and absorbs moisture from the wood. Part of that air circulates through the heat pump where the moisture is condensed and drained out of the chamber. Dried, reheated air comes back to kiln chamber. Electric heaters are used only for the heating phase which lasts about one day. In case of too high humidity or temperature in the chamber, the air is occasionally exchanged with the outside air.

They do not require a boiler- minimal investment, they work completely automatically (without the presence of the operator)

There is possibility to add heat exchanger, in that case drying kiln is combined (automatically uses heat from the boiler). This kiln combines the good characteristics of a dehumidifying and a conventional drying kiln.

In this way, the highest quality drying is achieved in the shortest time with minimal energy consumption.

“NIGOS – electronic” gives its customers 3 years warranty for whole kiln, and 5 years for the automatic control unit.

NIGOLUX scheme

NIGOLUX-K1 scheme

NIGOLUX-K2 scheme


  • Complete construction of solid aluminum profiles allows high roof loads (up to 250kg / m2 of snow) and resistance of the drying kiln to wind gusts of 150km / h
  • Drying kiln walls made of aluminum cassettes, connected with stainless steel screws and silicone of high resistance to temperature and acid from wood
  • Insulation of hard pressed wool 10 cm thick
  • Exterior facade made of sinusoidal aluminum sheets
  • Aluminum ceiling allows even circulation through all layers
  • The heat pump, with the help of a compressor, changes the aggregate state of the gas (freon), uses energy at the same time to heat the dryer and condense moisture from the dryer.
  • The main parts of the heat pump are the compressor, the evaporator (cold part) and the condenser (warm part)
  • Drying is performed without the presence of outside air, so in these drying kilns is the maximum retention of the natural color of the wood
  • Heat exchangers made of stainless steel and bimetallic pipes stainless steel / aluminum 25/54 and a complete hot water installation in a kiln made of stainless steel pipes (only for model K2), allows the combined operation of this model of drying kiln.
  • Reversible fans with high efficiency (H-class motors)
  • Energy saving by changing the fan speed, via frequency inverters for each fan separately
  • High pressure humidifying system (pump, valve, filter, etc.); double: on the back wall and in the front of the false ceiling (nozzles, stainless steel pipes)
  • Possibility of installing equipment, doors and control systems in the customer’s masonry building.