EVERYDAY SCIENCE

Detailed explanation-1: -In active solar heating applications, heat from the sun is collected, stored and used primarily for domestic hot water heating but also can be used for space heating. The reason the system is called active is because pumps and fans are used to transfer the captured heat to an area where it can be stored or used.

Detailed explanation-2: -Passive solar systems rely on the structure of the building to collect heat. This could be in the form of a tilt or a roof orientation that allows for higher solar irradiance. On the contrary, active solar heating systems rely on heat pumps that transfer the collected heat from the solar collectors to the building.

Detailed explanation-3: -On the other hand, active solar heating convert heat from the sun into an alternate source, like electricity or hot water. Photovoltaic solar panels that are used to run an electric heater would be one example of active solar heating.

Detailed explanation-4: -d) A system which uses earth’s heat to generate electricity. Explanation: A solar heating system is a system which uses sunlight to generate heat. This heat can either be directly used or converted to other usable forms of energy like electricity.