[TRNSYS-users] TRNSYS-users Digest, Vol 128, Issue 23

[asit mishra]

Hello Brad,
                I have observed this happening (while taking readings with
a globe thermometer) for locations near fenestration in summer. So, if you
have a significant percentage of wall area covered by fenestration, this
could happen. I cannot explain the winter situation though.

Regards,
Asit

On Fri, Aug 21, 2015 at 5:45 PM, <trnsys-users-request at lists.onebuilding.org
> wrote:

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> Today's Topics:
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>    1. Solar Thermal Collector outlet temperature (Arnaud Candaele)
>    2. Mean Radiant Temperature More Extreme than        Individual Surface
>       Temps (Bradley Painting)
>
>
> ---------- Forwarded message ----------
> From: Arnaud Candaele <arnaud.candaele at gmail.com>
> To: trnsys-users at cae.wisc.edu
> Cc:
> Date: Fri, 21 Aug 2015 10:45:08 +0200
> Subject: [TRNSYS-users] Solar Thermal Collector outlet temperature
> Hi,
>
> I'm trying to model a simple solar thermal collector, using Type1a.
>
> I created a very simple test case, basically just taking the outdoor
> temperature and solar radiation, and plotting the outlet temperature.
> The thing is, I'm changing the number of collectors in series, and the
> plotted outlet temperature doesn't change at all.
> Isn't it supposed to change ?
>
> Thanks for any help !
>
> Arnaud
>
>
> ---------- Forwarded message ----------
> From: Bradley Painting <paintingbr at appstate.edu>
> To: "trnsys-users at lists.onebuilding.org" <
> trnsys-users at lists.onebuilding.org>
> Cc:
> Date: Thu, 20 Aug 2015 22:05:56 -0400
> Subject: [TRNSYS-users] Mean Radiant Temperature More Extreme than
> Individual Surface Temps
> Hello,
>
> I am seeing poor thermal comfort and found that the mean radiant
> temperature of my air node is more extreme than the inside surface
> temperature of any individual wall or window comprising the airnode. It is
> much colder in the winter and much warmer in the summer.
>
> This doesn't seem possible to me. Any idea what could cause this? Please
> see first the aggregate temperature range for all walls and windows, and
> then the mean radiant temperature for the same time period in the two
> respective graphs below. Thanks.
>
>
> [image: Inline image 1]
>
> [image: Inline image 2]
>
> --
>
> Brad Painting
>
> Master of Science Candidate, Renewable Energy Engineering
>
> Department of Technology & Environmental Design
>
> Appalachian State University
>
> Boone, NC  28608
>
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>


-- 
Asit Kumar Mishra (11ME92R01)
Research Scholar
Refrigeration and Air Conditioning Lab
Department of Mechanical Engineering
IIT Kharagpur

a.

@@@
*The pen might not be mightier than the sword, but maybe the printing press
was heavier than the siege weapon. Just a few words can change everything.*
@@@
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