Decay Is a source of thermal energy that usually goes un-noticed The breakdown of dead plants and animals releases thermal energy If you have composting you can feel the heat produced by the decaying process
Solar Energy Solar energy is our most common form of thermal energy The sun provides the energy for life of the whole planet Every 40 minutes, the level of energy that hits the Earth equals the whole energy level of humans for a full year.
Using the Sun We are able to use the sun’s energy to create heat and warmth for us There are two primary types of solar heating; Active Passive
Passive Solar Heating The basic approach is simple; Reduce heat loss and increase heat gain from the sun This system requires that insulation plays a vital role in maintaining of heat levels This also requires convection and radiation to work
Passive Solar Heating Process; Radiant Energy comes in through the windows around the house This energy is added to the energy currently in the room Heat travels to the other rooms through convection currents
Active Solar Energy This type of heating usually has three components; A collector A heat storage Unit A heat distribution system
The Process Water is used to trap solar energy. Copper tubing under a black surface is placed under glass panels Sun rays hit the glass and the area is heated The water running through the copper tubes is heated and pumped to the distribution and storage units.
Solar Energy and Electricity In addition to providing heat, solar energy can also be converted into electricity. Solar Cells are arranged in panels and which are connected to form a solar array These arrays are positioned to capture the suns energy and store in low voltage batteries
Cost/Benefits of SolarEnergy Is a reusable form of energy Does not create pollution, or radiation risks like nuclear powerCOSTS Cannot create enough energy is some areas of the world where sun light can be limited Expensive to install