vapour pressure The partial pressure of water vapour in the atmosphere. For a liquid or solid, the pressure of the vapour in equilibrium with the liquid or solid(ciśnienie pary wodnej w atmosferze)
steam generator A pressurized system in which water is vaporized to steam by heat transferred from a source of higher temperature, usually the products of combustion from burning fuels. Also known as steam boiler(urządzenie ciśnieniowe zamieniające wodę w parę wodną pod wpływem wysokiej temperatury, uzyskiwanej przy spalaniu paliw)