The cross sectional variation of {TAIL ~ the vapor passage} in the heat pipe between {HEAD ~ the two outermost heat transfer zones} is advantageously brought about by a displacement body arranged internally of the heat pipe with a particular surface contour 
The cross sectional variation of { TAIL ~ the vapor passage } in the heat pipe between { HEAD ~ the two outermost heat transfer zones } is advantageously brought about by a displacement body arranged internally of the heat pipe with a particular surface contour
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH