Sonnenkraft is selling car washes

The technical equipment of the solar thermal car wash can be installed in a standard container
Photo: Sonnenkraft

Sonnenkraft Deutschland GmbH has recently begun selling a system called SolWash, which uses solar heat to wash cars. Car washes are particularly suitable for solar thermal because the demand for heat is actually higher during the summer than in the winter. Cars simply get washed more often during the warm months of the year. This means that heat surpluses during the summer are not likely to be a problem.

In addition to hot water for washing cars, SolWash can also heat the floor, ensuring that a car wash can be operated safely at temperatures below 4 °C. Sonnenkraft expects potential savings of up to 60% compared to conventional solutions. This means that the system will always pay for itself within five to seven years, depending on the local conditions.

The solar heating system can be installed in existing equipment rooms or delivered as a turnkey solution in separate containers. The company offers these in three sizes, for two to eight washing stations. Buffer tanks with capacities between 1500 and 4000 L provide storage for heat generated during periods when relatively few cars are being washed.

Before installation, Sonnenkraft performs a requirement and availability calculation and plans the solar car wash accordingly. Sonnenkraft uses the cloud-based control system SolConnect to remotely monitor and control the system.

The Austrian company Riposol presented the system last year at the Intersolar Europe in Munich. Sonnenkraft will now have exclusive distribution rights in Germany, Switzerland and France. Sonnenkraft is also integrating some of its own components, for example in the collectors.

Jan Gesthuizen

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