Electrical Heating Purposes Quiz

Room heaters for domestic purposes, melting of metals for industrial purposes

The system does not produce any flue gas, simple and accurate temperature control, economical

Convection: describe the modes of heat transfer. Radiation: what are different methods of heat transfer and under what conditions heat transfer by radiation is efficient.

The different purposes of electrical heating include immersion heaters for water heating, room heaters for domestic purposes, hot plates for cooking, electric irons, melting of metals, moulding of glass, electric toasters, and making of insulators for industrial purposes.

The advantages of electric heating include the absence of flue gas production, cleanliness requiring minimum cost of cleaning, simple and accurate temperature control, economical cost in terms of initial and maintenance costs, automatic protection against overcurrents or overheating, and the ability to perform special types of heating accurately.

The modes of heat transfer include conduction, convection, and radiation. Heat transfer by radiation is efficient under conditions where direct line of sight between the heat source and the object to be heated is available, and the intervening medium does not absorb or scatter the radiation significantly.

The specific methods of heat transfer are conduction, convection, and radiation.

The different industrial applications of electrical heating include melting of metals, moulding of glass, and making of insulators.