I can see how sunlight would change the mean radiant temperature (MRT); however, the multizone manual says that TRNSYS only calculates MRT from longwave radiation (emitted from surrounding surfaces). I am using internal calculation -- simple model, which uses the formula:
On Fri, Aug 21, 2015 at 10:29 AM, <trnsys-users-request@lists.onebuilding.org> wrote:
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1. Re: TRNSYS-users Digest, Vol 128, Issue 23 (asit mishra)
---------- Forwarded message ----------
From: asit mishra <writeto.asit@gmail.com>
To: trnsys-users@lists.onebuilding.org
Cc:
Date: Fri, 21 Aug 2015 19:58:49 +0530
Subject: Re: [TRNSYS-users] TRNSYS-users Digest, Vol 128, Issue 23AsitRegards,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.On Fri, Aug 21, 2015 at 5:45 PM, <trnsys-users-request@lists.onebuilding.org> wrote:Send TRNSYS-users mailing list submissions to
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Today's Topics:
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@gmail.com>
To: trnsys-users@cae.wisc.edu
Cc:
Date: Fri, 21 Aug 2015 10:45:08 +0200
Subject: [TRNSYS-users] Solar Thermal Collector outlet temperatureHi,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@appstate.edu>
To: "trnsys-users@lists.onebuilding.org" <trnsys-users@lists.onebuilding.org>
Cc:
Date: Thu, 20 Aug 2015 22:05:56 -0400
Subject: [TRNSYS-users] Mean Radiant Temperature More Extreme than Individual Surface TempsHello,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.--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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Brad Painting
Master of Science Candidate, Renewable Energy Engineering
Department of Technology & Environmental Design
Appalachian State University
Boone, NC 28608