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Schwank case studies:

Healthy heating from above – Supermarket Giant listens to spinach

„We achieved more than a good storage of our products. We created a great indoor climate, which enthuses our employees.”

Martin Thesing, executive board ALDI South

Schwank's tube heaters allowed Aldi to satisfy their employees and look after stored goods

The project

ALDI in the decision making process for tube heaters; it was spinach. Spinach is sensitive to the environment and the impact of the climate. The ALDI warehouse, located in Bous, Saarland, is the second largest logistics center in Germany with an area of ​​49,000 m². It provides 59 ALDI subsidiaries in Saarland and in the neighboring Rhineland Palatinate. In addition to the planned photovoltaic systems on the roof, energy efficient tube heaters were proposed to assist in making a sustainable contribution. But their suitability is questioned due to the high sensitivity of stored fruit and vegetables. 

The assignment

At first, the designer and the owner requested that the sustainability of the tube heating system is not in contradiction with the heating quality for stored goods. The positive effect of the infrared heat on people has already been proven. A healthy indoor climate is, among other things, achieved by equal distribution within the room. That means the human body does not need further energy to regulate within regions with different temperatures. The body does not feel that fast and feels more vital. In addition, it is the actual felt temperature, which is the healthiest indoor climate. Whether this also applies to fruits and vegetables was to be indicated by an experimental setup on site.

The implementation

So they are aware of the positive heating characteristics of their products, so they are connected to an experimental setup in conjunction with an air and radiant temperature controlled system . The 6-weeks of tests were extremely positive. Schwank tube heaters [725 kW heating performance] The spinach neither wilted prematurely nor changed consistency. Today, the 2-stage operating application heats a logistic area of ​​10,500 m² at an average hall height of 7.5 meters. The controls have been integrated into the building management system, which intelligently organizes 9 control zones.

The result

In order to ensure that the quality of the fruit and vegetables is guaranteed from harvesting to the point of sale, the storage has to be appropriate. Optimum air conditioning is particularly necessary for the storage of groceries and other sensitive goods. The consumer does not accept quality loss, for instance rotting, mold formation, germination or moisture. Therefore, the requirements of a logistics hall have to be fulfilled. This was a balancing act that Schwank tube heaters could do thanks to their infrared technology. Furthermore, Schwank’s tube heaters combine ecology and economy perfectly. The case of ALDI shows what’s good for humans, so it’s good for fruit and vegetables.