מדובר בשינוי תיכנוני, לא סתם רדיאטור רגיל וטוב .
כנראה שפיספסת את הקטע הזה מהפרויקט על ה AC COBRA
The temperature drop across the radiator was now about 17 to 19 degrees C, a massive difference to the single pass unit at 4 degrees. This probably meant that the speed of the coolant flow through the radiator had been increased and the flow through the tubes had gone from laminar to turbulent, therefore releasing a lot more heat into the metal from the coolant.
Prior to the triple-pass conversion, the coolant would take 12.5 minutes at idle to go from 89.5 to 102.2 degrees C. After the conversion, I stopped the test after 20 min 45 secs as the temperature had reached only 95 degrees C.
I was happy, although all the tests were conducted at only about 14 degrees C ambient temperatures.
האתר השני הוא מסחרי וההסבר שם מילולי בלבד כנראה :
"By building internal walls in the radiator, the coolant is re-routed to pass through the radiator (top to bottom or side to side) three times resulting in three separate exposures to temperature dropping air-flow, with little or no adverse flow restriction. The result is an average 15% reduction in radiator outlet temperatures".