SteamyTea Posted February 18, 2023 Share Posted February 18, 2023 Do some measuring and the sums. Td = T - ((100 - RH)/5.) where Td is dew point temperature (in degrees Celsius), T is observed temperature (in degrees Celsius), and RH is relative humidity (in percent). Link to comment Share on other sites More sharing options...
Pocster Posted February 18, 2023 Author Share Posted February 18, 2023 1 hour ago, SteamyTea said: Do some measuring and the sums. Td = T - ((100 - RH)/5.) where Td is dew point temperature (in degrees Celsius), T is observed temperature (in degrees Celsius), and RH is relative humidity (in percent). Did that - but got bored and decided having a life was better . Link to comment Share on other sites More sharing options...
ToughButterCup Posted February 18, 2023 Share Posted February 18, 2023 @pocster , yer not going to like this but, I'm old, so I have a relevant story for ya ..... One of my first seasonal jobs was as a lifeguard (well, cleaner really) at a swimming pool that was heated by methane gass. All the heat we ever wanted, and all free. So of course we ran the system full throttle all the time. Loads of heat wasted, very happy swimming customers - but people in the viewing gallery - sweating after 10 minutes. Air temperature stratospheric. Double glazed in places by the pool, but not in the viewing gallery. Yes .... condensation aplenty. The dampness dribbled down the beautiful laminated beams causing a white trail of calcium carbonate left behind after the re-evaporation of the now re-warmed water. Looked seriously awful. Architect - make the fans bigger Pool manager - scrub the bloody beams every day (yep, me) Me - make the windows openable : there's more than enough heat - for free Fans made bigger, me scrubbing like a dervish, if anything the condensation got worse ( yep - bigger fans) Then one year during closedown, they told me that they were going to make the windows openable. BINGO Viewers in the gallery - very happy - nice cool breeze now. Wet swimmers walking past the open windows - very sad. Me very happy Make your window openable. - I know - I'll get me coat. 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted February 18, 2023 Share Posted February 18, 2023 47 minutes ago, ToughButterCup said: One of my first seasonal jobs was as a lifeguard You as well as @pocster Will budgie smugglers be allowed again. Link to comment Share on other sites More sharing options...
ToughButterCup Posted February 18, 2023 Share Posted February 18, 2023 How can you make light of such a serious issue @SteamyTea ? Poor @pocster's budgie is having to put up with condensate on his pecker. He needs to get more air flowing round it, and all will be well. Lift his Dew Point and all that stuff.... he's well up to the job I should think. 1 Link to comment Share on other sites More sharing options...
Radian Posted February 18, 2023 Share Posted February 18, 2023 3 hours ago, pocster said: Got another one of these light wells to do soon ( ish ) . Going to build it in a similar way but leave a nice hole at the top . Get the glass on and see what happens . A proper comparative test @Radian ! Drilling the other to make a hole of some kind will be a pita ; so want proof of theory . That's good. Condensation is an absolute PITA. Several of my products have microcontroller driven LED's in clear plastic tubes for use outdoors (under cars, yachts etc.) and despite going to great lengths to hermetically seal the end caps and cabling, the polycarbonate tubes themselves have a finite amount of hygroscopic absorption and repeated heating and cooling pumps water vapour through the plastic. Then because it's decoupled from the outside, once the temperature falls below the dew-point the vapour condenses into water droplets. That's not a good look on a PCB full of electronics. Because of the inevitability of this I've had to apply a good coat of mil-spec lacquer over all the electronics and just leave nature to do its thing. The good news is that the water never builds up. The self-heating of the electronics clears the vapour on average and some tubes I've had outdoors since 2003 still work fine with a few drops of water nearly always present. 1 Link to comment Share on other sites More sharing options...
Pocster Posted February 18, 2023 Author Share Posted February 18, 2023 It’s interesting that the sky lights within the build never have condensation. You would assume moisture would get stuck up there and settle on the cooler glass . Link to comment Share on other sites More sharing options...
SteamyTea Posted February 18, 2023 Share Posted February 18, 2023 37 minutes ago, ToughButterCup said: How can you make light of such a serious issue @SteamyTea ? Poor @pocster's budgie is having to put up with condensate on his pecker. He needs to get more air flowing round it, and all will be well. Lift his Dew Point and all that stuff.... he's well up to the job I should think. And I thought that special orange message about behaviour on here was directed solely at me. Link to comment Share on other sites More sharing options...
Pocster Posted February 18, 2023 Author Share Posted February 18, 2023 (edited) 11 minutes ago, SteamyTea said: And I thought that special orange message about behaviour on here was directed solely at me. It was . I’ve been a good boy ; ask@Nickfromwales Edited February 18, 2023 by pocster 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted February 18, 2023 Share Posted February 18, 2023 1 minute ago, pocster said: It was . I’ve been a good boy ; as @Nickfromwales When I was at school, we used to call people that finger pointed 'sneaks'. 1 Link to comment Share on other sites More sharing options...
Nickfromwales Posted February 18, 2023 Share Posted February 18, 2023 1 hour ago, SteamyTea said: When I was at school, we used to call people that finger pointed 'sneaks'. I’m surprised you can remember that far back lol Link to comment Share on other sites More sharing options...
SteamyTea Posted February 18, 2023 Share Posted February 18, 2023 10 minutes ago, Nickfromwales said: I’m surprised you can remember that far back lol I might sound like Bruce Willis, but I have a much better memory. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now