Does vacuum cleaner make use of heating effect?
Yes. An external thermostat can be plugged in between the wall outlet and freezer plug. A box is mounted outside the freezer and a sensor is placed inside the freezer
How does the fan inside a vacuum cleaner cause the vacuum cleaner to pick up dirt?
The fan powered by a motor creates suction which pulls the dust into nozzle (head) into the bag, filters or cyclones.
How much does it cost to make a vacuum cleaner?
Most RESIDENTIAL dishwashers sold in the United are 120 VAC.