Suitable thermal insulation is also provided on {HEAD ~ the rear or shade side} of the absorber plate to prevent {TAIL ~ undesirable heat loss} from that side of the panel 
to prevent
Suitable thermal insulation is also provided on { HEAD ~ the rear or shade side } of the absorber plate to prevent { TAIL ~ undesirable heat loss } from that side of the panel
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH