You have a biogas plant, an existing heat coil, a domestic heating system with free capacity or the waste heat from an emergency power generator, which you would like to add to your drying process? Our high-temperature driers, with up to 6 row heat coils give us scope for a wealth of waste heat designs.

One example of a waste heat design, which we produced for a biogas plant, is Project xxxx from our hay blog.

It is also possible to link a photo-voltaic plant, a wood-chip oven, a generator, a cross-flow heat exchanger or similar device with our VARIO Comfort control system. Contact our sales team  straight away. Our competent staff will advise you without obligation.

A range of decisive factors affect success in drying in the long term.

• Correct size
  Karl Neuhofer, a founder member of the ARGE Heumilch [Hay milk work group] and for many years its Chairman, once said, “A hay drying plant, which is of the correct size, proves its worth for the farmer." Our competent sales team will advise you without obligation.
• Correct air flow
  Even the most powerful hay drying plant cannot be efficient, if it is unable to use its full capacity because of constructional defects. Incorrect air flow, unwanted air escapes in the fan chamber or in the pressure channel, cross-sections, which are too small, etc. prevent efficient drying. The HSR planning team and comprehensive planning documentation assist you further with the structural requirements.
• Correct use
  Studies from the Raumberg-Gumpenstein Research Institute prove that a major factor in the efficiency of a hay drying plant is its correct use. One example of this is switching it off at the right time. As soon as the residual moisture content in the material has dropped below 50%, the plant can be switched over to cool-down operation. If this is not done at the right time, energy is neeedlessly used in the drying process. Appropriate preliminary drying of the material in the field greatly reduces the drying process and the drying costs. HSR Heutrocknung offer annual customer training for these and other tips. We extend a cordial invitation to you for the next training session. The forthcoming schedules are available in the Trade Fair Calendar.
• Correct maintenance
  Regular cleaning and an appropriate air conditioning service in accordance with the Service Manual are the basic prerequisites for the smooth operation of your hay drying plant.

With the new Vario Elite air dehumidifier we provide a high end solution, which continuously adjusts the air dehumidifier to the current conditions and the power requirement from the fan thanks to the integral frequency converter. This means that the cooling system cannot ice up and the machine stops switching off because the temperature is too high.

The specially coated and deeply incised lamellae, together with the lamella distance of 2 mm guarantee particularly high condensate elimination. Wider lamellae would cause increased through-flow of the air and the condensate would not be eliminated.

The face area of the air dehumidifier heat pump is derived from the resulting maximum volume of air over the fan. This maximum volume of air must not exceed an airspeed of 4 m/s during air dehumidification (face area in the evaporator).

The VARIO air dehumidifier series has a variable rotational speed control for the compressor (by means of the frequency converter), in order to achieve the optimum operating point in given conditions and to prevent the evaporator from icing up. The dehumidifier has a digitalised, temperature-controlled automatic air conditioning system (CPC regulation), which automatically increases the heat output in low temperatures. As a result the temperature in the interior air operation builds up and facilitates the final drying of the hay even at lower outdoor temperatures. All of this is regulated fully automatically by the integral VARIO Comfort control system.