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