d) available energy consuming means for transferring {HEAD ~ a fluid property} from said first fluid stream to said {TAIL ~ second fluid stream}; and 
to
d ) available energy consuming means for transferring { HEAD ~ a fluid property } from said first fluid stream to said { TAIL ~ second fluid stream } ; and
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH