Quote:
|
Originally Posted by Les
I don't think C/W is load dependant
|
Since no-one seems keen to move-on will dwell
Although not saying C/W(in) varies with load, I am far from happy it does not.
Example (using
True MTD calculator,only valid for "TEMA" shell types but...)
Set Points(terminology?) Wi=40c, Ai=30c
At 100w Wi-Wo =1 (and Ao-Ai=9)
TMD=F(LMTD)=3.0, (LMTD= 3.6), C/W(in)=
0.1 C/W(TMD)=UA =
0.03
At 200w Wi-Wo =2 (and Ao-Ai=8)
TMD=F(LMTD)=3.5, (LMTD=4.3), C/W(in)=
0.05 C/W(TMD)=UA=
0.0175
Think "UA" is the true thermal description and "(C/W)in" contains a few extra bits
Thoughts ?