Older dryer designs use radial airflow as this is cheaper to build, however hot air skirts around the unsealed basket resulting in energy wastage, axial airflow uses an airtight design which prevents skirting, the saving of 0.2 kW per litre of evaporation becomes significant in high usage environments. Estimated saving WS6-20 with TD6-30 over 30’000 cycles equals 64’800 kW.
Laundry being turned in one direction drys on the outside of the bundle and the inner section remains wet, by reversing the load this bundle is constantly being broken up, this reduces drying time by up 10 minutes with an estimated energy saving of 20%, so 64’800 kW in a WS6-20 / TD6-30 combo over 30’000 cycles.