Drying of food

  • Up to 45% subsidized acquisition costs

  • Save up to 75% on energy costs

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

Foodstuffs are sensitive goods that require the best treatment. Drying food safely means that product protection and product safety are paramount. Our heat pump dryers with their consistent process parameters ensure safe drying. Low temperatures also protect your products. The closed system of our food dryers delivers excellent results in terms of appearance, aroma and bioactivity.

For you, the condensation drying system developed by us on a heat pump basis with the system variant of the Airgenex®food food dryer is the optimal answer to your drying needs.
On the following pages you will learn more about the advantages of our food dryers, how they work and where they are used.

Fruits and vegetables

Gentle drying of fruit or vegetables takes place at the temperature you require or the optimum temperature for the product – usually between 30 and 70 °C.

Tropical fruits

Snacks made from tropical fruits become significantly more durable thanks to our gentle drying process and taste almost as fresh. Drying allows the entire harvest to be utilized.

Nuts and kernels

If required, we dry the residual moisture of the already relatively dry nuts to a minimum – as an ideal basis for your grinding process or simply to achieve a better shelf life.

Medicinal and spice plants

With our gentle low-temperature drying, we help you to manufacture your products. The applications in this area are very diverse and individual. Our drying solutions too.

Confectionery

Would you like to dry raw material gently and homogeneously? Or does your product have a coating that requires gentle drying? We design batch and continuous solutions for your production.

Digestate and pomace

Do you want to develop an up-cycle product and need drying for this? We support you with our drying solutions to create a new, valuable product from a supposed waste material.

Algae

Algae are versatile, for example in powder form as a dietary supplement or as a pharmaceutical product. With our gentle drying process, we ensure that the valuable active ingredients of the plant are preserved.

Meat and sausage products

Do you want to create a snack? Whether sausage, salami or ham chips, dried meat, meat chips, beef jerky or another unusual idea – with us as your technology partner, you will be one big step ahead in your development!

Insect food / Entofood

Protein-rich edible insects as meat alternatives are increasingly coming into focus. Entotarian food, such as snacks, sauces or spreads, also requires good drying before it can be further processed or preserved.

Feed and pet food

Are you looking for low-temperature drying to preserve valuable ingredients? Or a system that makes your product germ-free and therefore requires higher temperatures? We have a suitable solution for every requirement!
You can find more information on the subject of “drying pet food” here.

Packaged food

You can find more information on drying packaging here.

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

Your benefits

Condensation drying based on heat pumps dries your products in a variable temperature range between 30 and 75 °C. Tempering steps are possible up to 100 °C. Drying at low temperatures protects the food. The drying process is completely stress-free for your product.

The Airgenex®food food dryers guarantee high efficiency in the drying process. Air dehumidification takes place using heat pump technology. The drying process works safely, stabilizes your production process and thus optimizes your process.

Our many years of experience and our know-how from many hundreds of drying applications ensures you the solution that is exactly right for your product and your production process. Only this path leads to success for you as a customer and us as a provider.

Realized projects have shown that the condensates obtained can contain volatile aromas and flavors. The food dryers from Harter enable you in any case to reuse your valuable condensate or its ingredients.

Drying food with Harter technology: This basically takes place in a closed system, i.e. without exchange with the ambient air and therefore independent of the climate. This fact supports positive results in terms of bioactivity, aromas and appearance of your products. For example, sulfur processes or the addition of ascorbic acid to maintain color are no longer necessary. The dried products basically do not require any additional flavorings.

Compared to exhaust air dryers and conventional blower techniques, the Airgenex®food food dryers require significantly less time for drying. This naturally depends on the drying temperature and the structure of the product. The alternative physical approach of condensation drying based on heat pumps is responsible for this. High-quality air treatment and air flow also ensure energy and thus cost savings.

With little effort, our dryers can also be made ready for cooling if this is desired or required by the process. Several combined drying-cooling systems are already in use. In addition, we are also happy to develop concepts for energy efficiency, such as how excess energy from our cooling system can flow into other processes in your company.

Drying systems for food

We develop and manufacture drying systems for both batch operation and continuous processes, thus adapting our technology to your specifications. We determine all specific parameters for successful drying beforehand in drying tests in our technical center.

The basis for our successful drying is a perfect interaction of air dehumidification and air flow. At low temperatures, we direct extremely dry and therefore unsaturated air exactly to where it should absorb the moisture. We implement this process – our condensation drying based on heat pumps – in a wide variety of system types.

Our drying systems for food are made of stainless steel as standard and can be cleaned according to the food standard. We are happy to meet your individual requirements regarding hygiene design. Contact us!
Is your application different?

You will certainly understand that it is impossible to list all of our drying solutions here. If you have not found your application here, please contact us directly. We would be happy to advise you without obligation!

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

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
Submit your inquiry now

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

Discover more insights

Brochures, technical reports, and press articles for those who want to know more details.

Brochures:
Technical reports:
Links to the trade press: