EVERYDAY SCIENCE

Detailed explanation-1: -An active solar heating system needs sunlight and electricity as sources of energy. The heat exchanger of a heating system uses conduction and convection to transfer energy as heat. Some of the energy generated as heat by a heating system is wasted. Vertical air space is a better insulator than fiberglass batting.

Detailed explanation-2: -Active solar heating systems use solar energy to heat a fluid–either liquid or air–and then transfer the solar heat directly to the interior space or to a storage system for later use. If the solar system cannot provide adequate space heating, an auxiliary or back-up system provides the additional heat.

Detailed explanation-3: -Active systems have solar collectors mounted on a roof or south facing wall. These collectors absorb the sun’s radiation through a heat transfer liquid. The radiation is converted into useable heat energy by pumping the heat transfer liquid through a heat exchanger that transfers the energy to the water heater system.

Detailed explanation-4: -There are two ways to harness solar energy. Passive systems are structures whose design, placement, or materials optimize the use of heat or light directly from the sun. Active systems have devices to convert the sun’s energy into a more usable form, such as hot water or electricity.

Detailed explanation-5: -What Is Active Solar Energy? This category includes all solar technologies that convert the sun’s clean energy into usable power (in the form of electricity). The photovoltaic (PV) panels you often see on residential or commercial roofs are the most famous example of active solar power.