Laws Cooling

1. Liquids absorb heat when changing from liquid to vapor state. Liquid bring warmth in the process of transition from vapor to liquid
2. The temperature at which a change of state occurs is in a constant process of changes, provided the pressure remains constant.
3. Heat flows only from the body, that is at a higher temperature to a body that is at a low temperature (hot, cold).
4. The metal parts of the boiling and condensing units use metals, which have high thermal conductivity (copper, brass, aluminium).
5. Thermal energy and other forms of energy are interchangeable. For example, electricity can be converted into heat, heat to electrical energy; and heat into mechanical energy.