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My guess is that you may be experiencing
nucleate boiling in the area of the C C thermal pick up. The generation of
steam bubbles would tend to insulate the wall of the housing. All other
indications indicate that there is heat being generated and dissipated into the
coolant. It looks like if you had continued with the 17. 5 GPH fuel flow
and the same RPM that the difference in the two temps would continue to be
spread, until power was reduced.
Looking at the water press. it looks like it
was increasing in press. at about the same rate as the rad temp, peeking at
25 PSI. This translates to about 240 deg F.(sorry Dave my steam table is
ceria 1957) I don't think there is any direct relationship between the rad
outlet temp. and the C C temp.(This is only a guess, because there is no Holiday
Inn express close by, and I am not sleeping much these days anyway)
Bob Perkinson
Hendersonville, TN.
RV9 N658RP Reserved
If nothing
changes
Nothing changes
The real mystery is the comparisons between rad inlet temp, rad outlet
temp and C.C. coolant temp (coolant temp measured right after passing
both rotor combustion chambers). In a 2nd gen 13B the CC coolant
temp is the hottest coolant in the engine because it normally cools slightly
after passing through the cooler intake port side of the engine. This is
the rad inlet temperature. As you can see, the CC temp and rad inlet
temp start out the same. When the power is increased, the rad inlet temp
climbs faster and higher than CC in the Renesis. I assume this is caused
by the increased heat picked up from the longer exhaust ports. It is the
amount that surprises me. Study the temp differentials between these
three temps and see if you can see the mystery and make sense of this.
The Chart is pretty crowded even after I eliminated several parameters
for this jpeg but when viewing it in Excel, it is very easy to see and
identify all the data. Moving the mouse pointer to any point of any
parameter pops up a little tag showing what the item is and the exact digital
value at that point in time.
Tracy
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