1. HEATING SYSTEMS

2. Conventional heating systems The energy released by the burning fuel is transferred to the surrounding air by conduction, convection, and radiation. The energy released by the burning fuel is transferred to the surrounding air by conduction, convection, and radiation.

3. A radiator is a device with a large surface area designed to heat the air near it by conduction. A radiator is a device with a large surface area designed to heat the air near it by conduction.

4. Different heating system Hot water Forced-airElectricity Page 142 & 143

5. Solar energy Energy from the sun is known as Energy from the sun is known as Solar Energy Solar Energy

6. Two basic types of systems are used to capture solar energy and convert it to thermal energy, and radiate the thermal energy after dark. Two basic types of systems are used to capture solar energy and convert it to thermal energy, and radiate the thermal energy after dark. 1- Passive solar heating 1- Passive solar heating 2- Active solar heating 2- Active solar heating

7. Passive solar heating Passive systems use no fans or mechanical devices to transfer heat from one area to another.Some materials in the system absorb radiant energy during the day, convert it to thermal energy, and radiate the thermal energy Passive systems use no fans or mechanical devices to transfer heat from one area to another.Some materials in the system absorb radiant energy during the day, convert it to thermal energy, and radiate the thermal energy after dark. after dark.

8. Active solar heating system Include Solar Collectors, devices that absorb radiant energy from the sun. The collectors are usually installed on the roof or south side of a building. Include Solar Collectors, devices that absorb radiant energy from the sun. The collectors are usually installed on the roof or south side of a building.