BEST WAY TO TEST IMPACT OF SOLAR FILM - Grasshopper2024-03-28T22:09:58Zhttps://www.grasshopper3d.com/forum/topics/best-way-to-test-impact-of-solar-film?groupUrl=ladybug&commentId=2985220%3AComment%3A1771529&xg_source=activity&groupId=2985220%3AGroup%3A658987&feed=yes&xn_auth=noHi Mostapha,
I have some lar…tag:www.grasshopper3d.com,2017-06-19:2985220:Comment:17712742017-06-19T20:23:17.487ZIbbyhttps://www.grasshopper3d.com/profile/Ibby
<p>Hi Mostapha,</p>
<p></p>
<p>I have some large windows (double height volume space) facing west and are getting baked by radiation in the summer due to solar radiation. Replacing glazing would be too expensive. I am thinking of applying film. I have seen some decorative/ frit like films. See link to one of the designs below. But before making the decision to buy and install the film. I am looking for Honeybee data to guide my decision.</p>
<p>I am assuming this film has 50 % opacity (dot…</p>
<p>Hi Mostapha,</p>
<p></p>
<p>I have some large windows (double height volume space) facing west and are getting baked by radiation in the summer due to solar radiation. Replacing glazing would be too expensive. I am thinking of applying film. I have seen some decorative/ frit like films. See link to one of the designs below. But before making the decision to buy and install the film. I am looking for Honeybee data to guide my decision.</p>
<p>I am assuming this film has 50 % opacity (dot frit ratio). I plan to model the frit as a surface and run <strong>both daylight and energy studies.</strong></p>
<p>For Daylight I am thinking couple of hourly studies with radiance should give me a good idea of the resulting reduction in illuminance and solar radiation. I did not think of running an annual study but may be I will run one.</p>
<p>For the energy model I am not very sure hence the post on the forum. I was<span> thinking adding a brep (maybe using a HB context shading) and locating it in the same plane as the glass. Although I plan to apply the film on the inside of the window, I feel the effect would be as if the glazing and film are in plane. Would this be a right assumption</span></p>
<p>I did some shading studies with location of the brep. I find that if brep is located outside the window I see huge reduction in cooling load. if brep is located in-plane with the glazing, i see some reduction in cooling load. if brep is located inside the glazing, i don't see any reduction in cooling load. Hence i am confused as all the film manufacturers say there will be significant reduction in cooling load. Any advise would be helpful.</p>
<p>Thanks,</p>
<p><a href="https://www.decorativefilm.com/3m-fasara-sh2fgim-illumina-50-high" target="_blank">https://www.decorativefilm.com/3m-fasara-sh2fgim-illumina-50-high</a></p> Hi Ibby, You need to be more…tag:www.grasshopper3d.com,2017-06-19:2985220:Comment:17715292017-06-19T20:00:21.903ZMostapha Sadeghipour Roudsarihttps://www.grasshopper3d.com/profile/MostaphaSadeghipour
<p>Hi Ibby, You need to be more specific to get help on this question. Here is a couple to start:</p>
<p></p>
<p>1. Is it a daylighting study or energy or both?</p>
<p>2. If daylighting, is it an annual study?</p>
<p>3. What are the information that you have about the solar film?</p>
<p></p>
<p>Mostapha</p>
<p>Hi Ibby, You need to be more specific to get help on this question. Here is a couple to start:</p>
<p></p>
<p>1. Is it a daylighting study or energy or both?</p>
<p>2. If daylighting, is it an annual study?</p>
<p>3. What are the information that you have about the solar film?</p>
<p></p>
<p>Mostapha</p>