ETFL 60 = Elevated Temperature Flame Limit @ 60 Â°C. HOC = Heat Of Combustion. Compounds used as refrigerants may be described using either the appropriate prefix above or with the prefixes R- or Refrigerant.. Thus, CFC-12 may also be written as R-12 or Refrigerant 12.An alkene, olefin, or olefine is an unsaturated chemical compound containing at least one carbon-to-carbon double bond.hemical refrigerants are assigned an R number which is determined systematically according to molecular structure.
The energy stored in a capacitor is almost entirely in the electric field produced between the plates. It takes energy from a battery or some other power source to move electrons to one of the plates and away from the other. This makes one plate positively charged and the other negatively charged.
Capacitors. A capacitor is an electrical component that stores and releases electrical charge. A capacitor is used to filter electricity in power supply lines, blocking direct current (DC) voltages and passing alternating current (AC) signals, among other things. semiconductor is an electrical component that conducts electricity in a specific direction. There are a variety of semiconductors that are created using different materials. Silicon is the most widely used material for semiconductors, with germanium, gallium arsenide and silicon carbide being used commonly.