Assertion: boiler's heat | /r/HasProperty | recovered
Facets:
Source sentences:
text: Heat source - the fuel to be burned and its ash properties  or the process material from which the heat is to be recovered.
text: or the process material from which the heat is to be recovered.
text: They are allowed to change and condense on the surface of the heat exchanger as the heat in the condensate is recovered and used.