I have a question that my science teacher was asking for on some homework I looked it up and none of the answers fit his question that the websites gave me. Please helpmy projects not due for a while but if you could help I would be soooooo thankfull
One of the best ways is thru phase change. Use heat to make a material change phase.then recover when you change the phase back. This is what happens in your fridge with freon. There are salt mixtures that melt at relatively low temperatures, which requires energy, then as you recover this energy (as heat) via heat exchangers turns the phase back to solid, recovering the heat from the change from a higher energy state (liquid) to a lower one (solid). Used in some solar collection systems. Molecules are moving faster and are less ordered in the liquid state. Then form into crystal structures in the solid state.
Heat is just a form of energy. Energy can take many forms (electrical, light, sound, chemical, kinetic, thermal) and can be transformed into one form or another, but never created or destroyed. This is called the conservation of energy. One main ways of storing heat energy is to place the heat source in an insulator, even though no insulator is perfect (some heat will be transferred). Another way to store it would be to transform it to another form of energy, i.e. electricity. Right now scientists, engineers, and professors are working on novel ways to transform heat into electrical energy. One recent example is an alloy that was created that, when heated, creates a magnetic field that is nearly proportional to the heat transfered to the alloy. By placing wound coils over this alloy, one could create a current through inductance. This current source could then could be reconverted back into heat energy by placing a wired to a resistive load. For example, a stove element. If we look at the behavior of atoms when heated or cooled, we can say for sure that, as the atoms of conductors are heated, the individual atoms move about colliding with each other as the internal kinetic energy builds. This friction between atoms is what creates the heat.
