Which white paint would best reflect the suns rays and retains less heat ? For the temperature shield.
High gloss white or dead flat white and is oil paint better then the 100% acrylics now being made.
Thank you. Tony
Welcome to the Cumulus Support forum.
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Cumulus MX V4 beta test release 4.0.0 (build 4018) - 28 March 2024
Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014 (a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Cumulus MX V4 beta test release 4.0.0 (build 4018) - 28 March 2024
Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014 (a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
Which white deflects best ?
-
- Posts: 207
- Joined: Sat 24 Sep 2011 2:46 pm
- Weather Station: Davis Vantage Vue
- Operating System: Raspbian
Re: Which white deflects best ?
I actually painted mine with several layers, and on the top it was high gloss white. Never had any negative results. However due to the fact it has more layers of white below (below is totally flat white), pieces of the gloss get ripped if it rains for some time, but I think any should do well!
- mcrossley
- Posts: 12694
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Which white deflects best ?
I don't know, but a flat white 'emulsion' type always seems best to me. As they all probably use titanium dioxide as the 'whitener' there may not be much between them. To what surface is it to be applied?
- iceberg
- Posts: 155
- Joined: Sat 27 Nov 2010 10:44 pm
- Weather Station: VANTAGE VUE METRIC 2015 MODEL
- Operating System: windows 10
- Location: Montreal, Canada
- Contact:
Re: Which white deflects best ?
mcrossley wrote:I don't know, but a flat white 'emulsion' type always seems best to me. As they all probably use titanium dioxide as the 'whitener' there may not be much between them. To what surface is it to be applied?
Most shields are made of plastic.
- beteljuice
- Posts: 3292
- Joined: Tue 09 Dec 2008 1:37 pm
- Weather Station: None !
- Operating System: W10 - Threadripper 16core, etc
- Location: Dudley, West Midlands, UK
Re: Which white deflects best ?
This is a radiation sheild ...
So outside as reflective as possible, inside matt (blackboard) paint.
The beteljuices final sensor housing was actually stainless steel mesh around a stainless steel tube with a black cartridge paper inner sleeve, and of course it should be ventilated.
Although it sounds fancy it was actually a recycled garden lamp surrounded by a cheap barbeque grill
So outside as reflective as possible, inside matt (blackboard) paint.
The beteljuices final sensor housing was actually stainless steel mesh around a stainless steel tube with a black cartridge paper inner sleeve, and of course it should be ventilated.
Although it sounds fancy it was actually a recycled garden lamp surrounded by a cheap barbeque grill
......................Imagine, what you will KNOW tomorrow !
- BillW
- Posts: 67
- Joined: Thu 23 Jun 2011 6:28 pm
- Weather Station: Ultimeter 2100 + 5 in man. gauge
- Operating System: Win 7 Pro
- Location: Kilwinning, Ayrshire, UK.
Re: Which white deflects best ?
Hi iceberg,
I had a grey plastic radiation shield which would heat considerably during spells of sunny weather.
The only thing I found that would "stick" to it was what is generically just called Hammerite in the UK.
This is the brand name though, so I don't know if it's available in Canada or whether there is a local equivalent.
It certainly reduced the over heating (but didn't fully eliminate it comparing results to nearest official met station).
However it was an improvement.
cheers,
Bill.
I had a grey plastic radiation shield which would heat considerably during spells of sunny weather.
The only thing I found that would "stick" to it was what is generically just called Hammerite in the UK.
This is the brand name though, so I don't know if it's available in Canada or whether there is a local equivalent.
It certainly reduced the over heating (but didn't fully eliminate it comparing results to nearest official met station).
However it was an improvement.
cheers,
Bill.
- jdc
- Posts: 142
- Joined: Tue 19 Jun 2012 8:51 pm
- Weather Station: Davis VP2 : Instromet
- Operating System: Win 10
- Location: Portsoy,.
- Contact:
Re: Which white deflects best ?
When repainting mine earlier this year I found the following:
http://wattsupwiththat.com/2007/07/14/t ... aint-test/
http://wattsupwiththat.com/2008/01/14/a ... aint-test/
http://wattsupwiththat.com/2007/07/14/t ... aint-test/
http://wattsupwiththat.com/2008/01/14/a ... aint-test/
- logjam
- Posts: 172
- Joined: Fri 30 Nov 2012 8:01 pm
- Weather Station: Homemade station on Raspberry Pi
- Operating System: Raspbian on Raspberry Pi
- Location: North Lincolnshire, UK
- Contact:
Which white deflects best ?
On the outside of my box screen I use the kind of white paint they spray on radiators. On the inside, the kind of black they spray on barbecues. Comparisons are difficult, but this seems to keep the temperature right down in direct sun, and more like what the air temperature feels like in the shade.