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bigben2k · 09-09-2003, 08:30 PM

JD: I think you're getting closer...

If you test blocks a, b, c, d, and e, and you get say, 34, 35, 38, 40 and 44 deg C respectively, you'd tend to place them in that order, right?

As GF pointed out, you only measured it for one flow rate, and that's not fair, because one block could outperform another at another flow rate, where it didn't before. Even one or two years back, you'd get an occasional block whose curve would cross another block, but with today's variety of designs, it's more than just a fluke.

Back to the order...

If you use a thermocouple, and some meter that gives you +/- 1 deg C, which would be ok, then you can't really say that block b outperforms block a, because block B's temp could actually be 34, and block A's temp could actually be 35, which would actually reverse the order of those two.

[edit: rambling removed]

Now I don't know if you had all that figured out, but I thought I'd recap it, at least for everyone else's benefit. We have 630 views on this thread alone, as of now, so someone is watching!

[edit: rambling removed]

09-09-2003, 08:30 PM	#36
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	JD: I think you're getting closer... If you test blocks a, b, c, d, and e, and you get say, 34, 35, 38, 40 and 44 deg C respectively, you'd tend to place them in that order, right? As GF pointed out, you only measured it for one flow rate, and that's not fair, because one block could outperform another at another flow rate, where it didn't before. Even one or two years back, you'd get an occasional block whose curve would cross another block, but with today's variety of designs, it's more than just a fluke. Back to the order... If you use a thermocouple, and some meter that gives you +/- 1 deg C, which would be ok, then you can't really say that block b outperforms block a, because block B's temp could actually be 34, and block A's temp could actually be 35, which would actually reverse the order of those two. [edit: rambling removed] Now I don't know if you had all that figured out, but I thought I'd recap it, at least for everyone else's benefit. We have 630 views on this thread alone, as of now, so someone is watching! [edit: rambling removed] __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101 Last edited by bigben2k; 09-12-2003 at 08:34 AM.