According to the invention the flows through the primary or secondary side of the heat exchanger is at each time continuously controlled by a parameter being {HEAD ~ a function} of both the actual temperature and {TAIL ~ the actual fluid volume} in said accumulator tank  
of
According to the invention the flows through the primary or secondary side of the heat exchanger is at each time continuously controlled by a parameter being { HEAD ~ a function } of both the actual temperature and { TAIL ~ the actual fluid volume } in said accumulator tank
OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH