[Bldg-sim] reflective ceramic paint

[leen peeters]

thanks!

We did indeed play with emissivity. But that is giving a 0.4% energy saving
;-)

leen

On 24 May 2018 at 17:48, Bishop, Bill <bbishop at pathfinder-ea.com> wrote:

> Hi Leen,
>
> We have discussed reflective paints a couple times in the forums - back in
> September 2017 here
> <http://energy-models.com/forum/discourse/general-discussion/experience-modeling-ceramic-insulation-coating> and
> in more detail in 2011 here
> <http://energy-models.com/forum/ceramic-insulating-paint-additives#comment-11419>
> .
>
> I have not used the products. Research and anecdotes question the value of
> “ceramic insulation” paints. It is doubtful that they impact R-value in any
> meaningful way. You can try modeling it by varying the absorptance and/or
> emissivity of the wall, if the product you are considering provides those
> values.
>
> The main thing to realize is at best, paints can affect radiative heat
> transfer, but do nothing for conduction, convection or infiltration.
>
> Regards,
>
> ~Bill
>
>
>
> *William Bishop, PE, BEMP, BEAP, CEM, LEED AP*
>
> *Senior Energy Engineer*
>
>
>
> [image: Pathfinder-EA-logo-2]*T: (585) 698-1956*                        F:
> (585) 325-6005
>
> bbishop at pathfinder-ea.com <wbishop at pathfinder-ea.com>
> www.pathfinder-ea.com
>
> 134 South Fitzhugh Street
>
> Rochester, NY 14608
> <https://maps.google.com/?q=134%0D%0A+South+Fitzhugh+Street+%0D%0A+Rochester,+NY+14608&entry=gmail&source=g>
>        *Ask me why Carbon Fee & Dividend may be right for you.*
>
>
>
> *From:* Bldg-sim [mailto:bldg-sim-bounces at lists.onebuilding.org] *On
> Behalf Of *leen peeters via Bldg-sim
> *Sent:* Thursday, May 24, 2018 4:48 AM
> *To:* BldgSim Mailing List <bldg-sim at onebuilding.org>; Egon Troch <
> egon at think-e.be>; thomas.vercammen at i-vec.be
> *Subject:* [Bldg-sim] reflective ceramic paint
>
>
>
> Hi,
>
>
>
> is there anyone who ever applied this type of paint on the inside? One of
> the manufacturers claims it gives the effect of 7.5 cm of EPS insulation.
> Product is ThermaCote.
>
> We have tried to simulate it with the reflective coating, but the impact
> disappears in the error margins...
>
>
>
> Any experience and measured values would help us!
>
>
>
> Thanks a lot!
>
>
>
> Leen Peeters
>
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