-------- In message <20161027131226.0d5a72e62b2c91f2e13b6...@kinali.ch>, Attila Kinali w rites:
>> Stop! >> >> Over insulating is a 100% sure-fire way to get unstable temperature inside, >> because it amplifies the consequences of any change in power dissipation. >> >> It is a classic mistake to build a 100mm insulated enclosure inside an >> office-like enviroment and end up having less stable temperature on >> the inside than the outside. > >No! Don't Stop! :-) > >That's why the next section I wrote described how to get rid of the >excess heat in a controlled fashio. Of course, simply just insulating >the room without giving it a lot of thermal mass or any form of control >of the heat production/exchange will not stabilize the room. Attila, I did read that. You are right in a certain set of circumstances, for instance in a already climate-regulated office space. But your model is a recipe for grief and disaster if you do it in a typical basement, on about 2/3 of the inhabited area of the planet where you cannot ignore the humidity. In general in a basement, it is a better idea to set up a closed space and manage the humidity inside it, than it is to move the humidity in and out of it. WRT to humidity, that's a very unlinear relationship, but you can get far by remembering these five rules: * Warm air holds more *absolute* humidity (ie: g/m³) than colder air. * At the same temperture, wetter air is lighter than dryer air. * The temperature is never the same. * Condensation should be avoided, period. * You cannot "feel" absolute humidity, always measure it. And yes, go ahead and look up number two, it's true. Dehumidifiers belong on shelves under the ceiling, not on the floor. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.