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Optimum flow including the outer wall conduct is decisive for the performance of any kitchen air extraction system. The minimisation of the pressure loss achieved, among other things, through integrated air guidance elements, conducts the airflow more aerodynamically and thus contributes to more energy-efficient and quieter operation of the extractor hood. With the COMPAIR® flow-Star wall conduct, the pressure of the airflow generated by the hood fan is used simultaneously for opening and closing. The sequence of movements of the maintenance-free, ball-bearing mounted sled installed in the plastic casing with tightly closing stainless steel front plate is controlled by spring/magnet mechanics. Everyday functionality and elegant design are just as convincing as the blower door test results recorded. Both the positive and the negative pressure readings exceed the reference values required by the new German Energy Savings Ordinance (EnEV). The air tightness achieved in the blower door test reduces the heat loss when the extractor head is switched off almost to zero.
Hans-Joachim Naber, Prof. Dr. Wolf-Christoph Friebel