In the FIG 4 embodiment, {HEAD ~ fluid coolant flow} through {TAIL ~ cooling channel} 46 removes heat from heat exchanger 40 
through
In the FIG 4 embodiment , { HEAD ~ fluid coolant flow } through { TAIL ~ cooling channel } 46 removes heat from heat exchanger 40
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH