Primary vs. Secondary Energy Source
1. Primary occurs naturally and has not been processed2.Secondary is a primary source converted in a more useful source
Role of moderator
slows down neutrons to increase the probability of them colliding with uranium-235 nucleus to cause fission
specific energy
available energy stored in a material per unit mass (Jkg-1)
energy density
availdable energy stored in a material per unit volume (Jm-3)
Photovoltaic cell
converts light energy into electrical energy
Solar Heating Panel
transfers thermal energy from sun to internal energy in water