{HEAD ~ This means} is preferably comprised of a tube type heat exchanger located between {TAIL ~ the valve} and the return inlet of the conduit to the absorber 
{ HEAD ~ This means } is preferably comprised of a tube type heat exchanger located between { TAIL ~ the valve } and the return inlet of the conduit to the absorber
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH