The method 1 wherein the heat transfer fluid is circulated without pressurizing {HEAD ~ the space} between {TAIL ~ the absorber plate} and the cover, thereby increasing the heat rejection characteristics of the collector 
The method 1 wherein the heat transfer fluid is circulated without pressurizing { HEAD ~ the space } between { TAIL ~ the absorber plate } and the cover , thereby increasing the heat rejection characteristics of the collector
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 TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH