About: http://webisa.webdatacommons.org/391558910

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	As is known in the art, such systems are essentially once-through systems, due to the presence of condensate polishers, deaerating heaters, and other equipment such as filters and vacuum degasifiers.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com