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