Both, a specified heating power and at least one defined heating sub-module, are associated with a seat heating mode.

Also, the heating unit (100) can provide partial heating by selectively applying electricity to the positive (+) terminals (31, 51) at the both edges.

Furthermore, the invention relates to a corresponding method for partly heating steel sheet parts to a temperature above the AC3 temperature.

The drying and partial heating of the washed flue gases are obtained in the desulphuration apparatus by the preheated ceramic arranged over the washing zone.

For instance, the 2001 Census shows that 38% of BME’s live in dwellings with no central heating and 13% have only partial heating.