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