Industrial Drying at Low Temperatures

  • Up to 45% subsidized acquisition costs

  • Save up to 75% on energy costs

  • 100% planning reliability thanks to premium after-sales service

Die Industrietrocknung bei niedrigen Temperaturen ist die Antwort auf steigende Anforderungen an Energieeffizienz, Produktqualität und Prozesssicherheit.
Mit der Wärmepumpentechnologie von HARTER trocknen Sie Materialien jeder Art schonend, reproduzierbar und wirtschaftlich – unabhängig von Wetter oder Umgebungsluft.

HARTER entwickelt und fertigt komplette Trocknungssysteme „Made in Germany“ – von der Analyse im eigenen Technikum bis zur individuellen Serienanlage.
Wie aus Ideen konkrete Lösungen entstehen, zeigt So entstehen Lösungen für Wärmepumpentrockner.
Ein technischer Überblick findet sich im Beitrag Energiesparende Trocknung mit Wärmepumpe.

Do you require a custom solution and/or would you like to test the drying process beforehand?

Development with practical tests in our in-house development center

We are an innovation-driven team and welcome new challenges. HARTER tests your custom solution in the technical center under realistic conditions, optimizes the parameters, and documents the results transparently. Please contact us – we would be pleased to provide you with a non-binding consultation!

Contact our experts now +49 8383 9223‑210 or submit the contact form
2000

Drying systems

in over 20 countries stand for our quality

100

Employees

from all areas ensure a high level of vertical integration

+ 35

Years of experience

in the development of innovative drying systems

Industrial drying at low temperatures – functional principle and advantages

The core principle of HARTER technology is the closed air circuit with integrated heat pump. The process air is dehumidified, tempered, and reused – a circuit without external or exhaust air. This keeps the drying process independent of the outside air and constantly controllable.

Advantages at a glance:

  • uniform results at temperatures from 20 °C to 75 °C
  • up to 70% less energy consumption compared to hot air systems
  • no dust or germ entry due to exhaust air-free design
  • stable processes for sensitive materials

The systems can be precisely controlled – temperature, air volume, humidity, and drying time remain constant throughout the entire process.
This ensures consistent product quality with minimal energy consumption.

How HARTER efficiently expands production capacities through modular solutions is described in the article Expanding capacities with heat pump dryers.

Drying systems for industry

Industrial drying at low temperatures – applications and system diversity

HARTER’s technology is versatile and suitable for almost all industrial sectors:

  • Food and feed: Gentle drying of sensitive products, preservation of color and aroma
  • Chemicals and pharmaceuticals: Precise residual moisture levels, validatable processes
  • Metal and plastic parts: Fast, spot-free drying after cleaning or coating
  • Surface technology: Electroplating and paint drying without heat distortion
  • Sewage and industrial sludge: Reduction of volume and disposal costs

Each system is precisely tailored to the product, volume, and line layout. Whether batch or continuous drying – HARTER delivers customized systems that can be integrated into existing processes.

Original products are tested in advance in the company’s own technical center. Airflow, temperature, and humidity are specifically determined to define the optimal process window. This guarantees reliable results for testing, validation, and series production.

The Process

We dry with dry air and deliver it to the right places: A perfect interplay of air preparation and air guidance provides you with the best possible drying result.

Interface: Airgenex® Dehumidification Technology / Dryer – Moist air is extracted from the drying chamber and supplied to the dehumidification unit.

The pre-cooler pre-cools the air in a first stage. This significantly reduces the compressor’s energy consumption.

Moisture condenses on the fins of the air cooler and drains out of the drying system via the drip tray and condensate drain.

The cooled, dehumidified air is warmed up without additional energy by means of a pre-heater.
The air heater warms the air to the required process temperature.

The process air fan ensures the necessary air exchange between the Airgenex® dehumidification technology and the drying chamber.

Now, the dry, unsaturated air is guided into the drying chamber, where it absorbs the product’s moisture. Thus, the cycle is closed.

Efficiency that pays off.

Our HARTER drying systems save up to 75% CO₂ and are up to 45% governmentally funded.

Reliable – Competent – Long-term

Service that thinks ahead – for years to come

With the HARTER After-Sales Service, you secure a reliable and efficient drying solution for the long term. Whether it’s maintenance, spare parts supply, or technical adjustments – we support your system throughout its entire life cycle and ensure that it delivers optimal results at all times.

Performance Service

Optimal performance through our “all-round carefree package”

Custom Service

Flexible for changing requirements

Expert Service

Fast assistance in case of failure

Lifetime Service

So that the quality is always right

Industrial drying at low temperatures – sustainability and future security

The combination of heat pump, closed air circulation, and heat recovery makes HARTER systems particularly efficient.
Energy consumption is significantly reduced, and waste heat is fully utilized – a real contribution to climate protection.

Sustainable advantages:

  • up to 70% energy savings
  • significantly lower CO₂ emissions
  • reproducible quality without energy waste
  • low-maintenance, durable technology

Thanks to their modular design, the systems can be adapted to changing production volumes. They can also be combined with photovoltaic or heat recovery systems. Many HARTER solutions meet the requirements for energy efficiency and environmental support programs.

An overview of the different industry solutions can be found at: Industries.

What Our Customers Say

Not convinced yet? Our customers are thrilled!

“Sometimes it’s better to say nothing and let your customers speak for themselves.”
– Regina Mader, Managing Director

“For several decades, we have been using a Harter sludge dryer in our contract electroplating facility and are very satisfied with it. The technology and service are reliable and have helped us save a significant amount of money on disposal.”

Daniel Hutter
Verzinkerei Kriessern AG

“BK Giulini GmbH has been successfully collaborating with Harter GmbH for approximately 20 years. We are very satisfied with both the dryer technology and the reliability of the entire system. Based on these positive experiences and the excellent service, we invested in another drying system of this type in 2023.”

Dimitri Baumbach
ICL Ladenburg / BK Giulini GmbH (ICL Group)

“In our waste incineration plant, we have saved a significant amount of money by drying our heavy metal-containing hydroxide sludge. The plant technology is sustainable and maintenance-friendly. In retrospect, the investment was a very good decision.”

Stefan Ringmann
KVA Linth

FAQ – Frequently Asked Questions about Industrial Drying at Low Temperatures

The air is dehumidified and reheated via a heat pump. This cycle remains closed, ensuring no energy is lost and the product dries uniformly.

Depending on the application, between 20 °C and 75 °C. This allows both sensitive substances and robust materials to be dried optimally.

Compared to conventional hot air processes, savings typically range from 50 to 70%. Simultaneously, operating costs and CO₂ emissions decrease.

Yes. Drying is hygienic, exhaust-free, and reproducible – ideal for demanding quality requirements in food, pet food, and pharmaceutical production.

Yes. All HARTER systems are modularly designed and can be easily integrated into existing production processes.

Through digital monitoring of temperature, humidity, and airflow. The parameters are determined in the technical center and adapted to your products.

Yes. Thanks to their high energy efficiency, they meet the criteria of many national and EU funding programs.

Submit your inquiry now

Please fill out the form now, and we will contact you as soon as possible.