must take a bit of exception to a couple of your words there MDM
I am NOT "the only one who'd be qualified" by any means, and we should without any great strain be able to identify some of those individuals on this forum, and on several other forums as well and you would be amazed at the huge depth of knowledge and experience that exists with 'lurkers' who choose not to post (I know this as I have e-mail contact with many such) I am not too sure just how to do this; but if a way could be found to entice more of these very experienced individuals to post, then the forums could be an even better resource but again, many are here also just 'for fun' different strokes . . . . |
Different people have different interpretations of "Fun".
My take on it is that we are all in it for fun, or we wouldn’t be doing it. Being serious about something doesn’t mean you aren’t in it for fun also. The only way I could see you NOT be in it for fun or some side pleasure is if you have a monetary interest in your involvement in cooling. Once you get to the level you need to pay your bills based on a hobby such as this, then I can see it stop being fun rather fast and start being a stressful burden. The opinion that people who have vast knowledge on this topic don’t post due to most of the people here just are in it for fun is a bit misguided I think. While some do confuse being serious about the technology for not finding it fun, I think it’s the opposite. People who are serious and driven in this hobby have the most fun of all as they get all the rewards and pleasure from its growth. People who are just here to find which one is the best, don’t find cooling that fun at all, but see it as a burden that they need to get past to move onto other things. As much as I loathe doing reviews and testing of cooling devices, when I do testing and reviews, seeing the data evolve into a result is very satisfying and fun. Also reading about new designs and technologies is also quite a bit of fun to think through how those new designs and plans would affect cooling results. |
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my 'point' was rather that it can be difficult to converse when the same words have different meanings to different audiences by virtue of training, engineers for example develop a vocabulary in their particular specialty of words with VERY specific meanings; these meanings often are not quite the same as 'common usage' - so discourse can quickly bog down in what many will then decry as 'semantics' and reject - without ever having understood what the real issue even was about -- one's thoughts can be no more precise than the ability to describe them (for we all think with ‘words’) sometimes its just not worth the hassle not meant so negatively Joe (as you and I see our interest rather similarly), just observing that there are impediments to posting indeed bigdawginva made the same observation from the opposite pole |
Just to post a rant: Bill, could you *please* use international units ? I see m of h2O first, then psi (WTH is psi anyway), etc..
That was my rant :D Keep up the good job. Maybe in a few years you'll get a chair at a university, with a front plate saying "Bill Adams - Doctor in WaterCooling".. hehe... |
a chair in a few years ?
hell, I'll be dead in a few years, probably about the same time I learn SI units |
why not use kPa?
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this question was asked on several forums, this one as well
the engrs said yea, kPa - that's what's used for calculations so I posted a couple of graphs in kPa not popular the 'problem' is that pump output is uniformly described in mH2O so I attempted to speak "WCing talk" one nice aspect of the metric system is the abundance of units bar, and millibar pascal, and kilopascal and hectopascal kilogram per square meter, and centimeter and of course meters of water, and centimeter |
Ahhh good point. in lots of reaserch I have been doing in forced induction systems for cars, its all done in kPa so I have just gotten used to doing kPa to mmH2O and PSI :)
Any measurement is good for me hehe I got a calculator :D |
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Oh. mH2O is fine. Psi is not... Trying to find the correlation between a graph in psi and a pump output in mH2O is .... contorted. That was just my point :p
Pa is more used in industrial apps. mH2O sounds appropriate when talking about water... |
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I'm not saying no one else could'nt come up with the same answers, but who could prove them?(you made your bed BillA, don't be bashful about lying in it! :D)... |
much more accurate phraseology, and we like precision
worth remembering is that problems and analyses can be defined and addressed in different manners; one could say by theory as contrasted by experiment - of course all theory is ultimately 'proven' by experiment I am an experimentalist, using theory to assist my understanding; but several other posters here are quite well grounded in theory, which will provide answers where data is lacking or ambiguous |
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Some musing on the relation between bench and system testing of a wb.
In the unlikely event of true CPU temps have considered two(2) cases for the Cooltech WB75 cooling a 1sq cm Die( ~Duron): a) Wattage calculator and/or stress program are crap(70%) and no significant secondary heat paths(e.g. thro mb and mb C/W = infinity)) b)Wattage calculator and stress program are 100% correct but there are significant secondary heat paths(e.g. mb C/W=0.5 and 0.7). http://www.jr001b4751.pwp.blueyonder.co.uk/Bencha.jpg Possibly worth noting that heat loss by secondary paths delivers a double whammy to any temp changes. . |
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