About: http://webisa.webdatacommons.org/281339762

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	The thermal efficiency drops over the years because of heat exchanger aging etc, nevertheless, recouperation and other things are added that improve efficiency so he overall efficiency drops only a couple of percent.
http://www.w3.org/ns/prov#wasQuotedFrom	joannenova.com.au