Condensate Storage Tank
Condensate Storage Tanks are containers that hold liquids, compressed gases (Gas tank or "pressure vessel" in U.S.A, which is not typically labeled or regulated as a storage tank) or mediums used for the short or long-term storage of heat or cold.
The term can be used for reservoirs (artificial lakes and ponds) and for manufactured containers. The usage of the word tank for reservoirs is uncommon in American English but is moderately common in British English. In other countries, the term tends to refer only to artificial containers.