[Greenbuilding] Passive solar home--concrete overlay re thermal mass
KTOT (g)
ktottotc at gmail.com
Mon May 13 10:34:15 CDT 2013
If you can figure out where you saw that table—or multiple possibilities that I could research to find it—this would help me tremendously. I really, really need that table. So if anyone has ideas where I might find this or who might know about it, please let me know. Thank you.
From: Vadurro, Rob, EMNRD
Sent: Monday, May 13, 2013 9:06 AM
To: topher at greenfret.com ; Green Building
Subject: Re: [Greenbuilding] Passive solar home--concrete overlay re thermal mass
I believe the concern is the transfer of heat between different materials. I can’t remember where I saw it, but there was a table showing the transferring heat between base and finish materials, say tile to concrete slab below in passive solar conditions and the rate of transfer was much less than one might think. The joint between the two impeded the heat transfer, in other words. I would think an acrylic additive may impede the transfer even more. The best is always to not cover the slab, only color it, if heat retention in the slab is the goal.
Rob Vadurro, AIA
Park Architect
New Mexico State Parks
1220 South Saint Francis Drive
Santa Fe, NM 87505
505-476-3383
505-476-3361 fax
From: Greenbuilding [mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of Topher
Sent: Monday, May 13, 2013 8:39 AM
To: Green Building
Subject: Re: [Greenbuilding] Passive solar home--concrete overlay re thermal mass
On 5/13/2013 1:07 AM, KTOT (g) wrote:
Does anyone have experience or knowledge about this? Using or not using a concrete overlay product for the top layer of a floor for thermal mass, vs. a plain darkly stained concrete slab
A concrete overlay product is likely to be roughly similar in thermal characteristics to a concrete slab. Meaning that you will just have a thicker thermal mass. It seems unlikely that you should be worried about too much thermal mass in a passive solar house. The overlay product might have a lower specific heat, or conductivity, wither of which will reduce it's effectiveness somewhat. Remember to stick with a dark color.
Thank You Kindly,
Corwyn
-- Topher BelknapGreen Fret ConsultingKermit didn't know the half of it...http://www.GreenFret.com/topher@greenfret.com
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