Masoud,The building model (Type56) does not automatically take into account shading of the building either by itself or by surrounding objects. There are, however, other models available that do just that. Type68 is designed to calculate the shading on a facade by an external mask (surrounding objects or by the building itself). Type34 is designed to calculate the effect of wingwalls and overhangs on a facade. In both cases, you pass the unshaded radiation from your weather reading component (likely Type109 or Type15) to the shading component and the results of that component on to the building. Having written the Type68 model (which you will need if you are working with a courtyard) I will be the first to admit that it is a pain to define the shading mask. Our company developed a plugin to make the specification a bit easier and the developers are working on a way for Type56 to calculate its own shading effects but this last is an enhancement anticipated for TRNSYS 17.
Cheers, David At 07:52 2/16/2007, M.Malekzadeh wrote:
Hi there, I am just starting to use TRNSYS and a very important factor for me to go on with this program is to be sure about its ability of considering the effect of other buildings on mine. When I tried simulating a very simple central-courtyard building (without any windows, any heating or cooling etc), after using Building Wizard to divide my building in 8 zones (4 on the sides of the courtyard and 4 on the corners) and running the simulation, I got exactly the same results for the air temperature in the 2 zones situated on my courtyard's north and south sides. This is kind of strange, because I would assume that the other three wings would produce some shadow on the northern one and therefore reduce the solar heat gain in there. But it didn't happen. So the only conclusion I can make is that while simulating different zones, TRNSYS treats them separately and not in relation to each other (apart from their adjacency effect of course). Is this true? Because if this is the case, I need to find another simulation program helping me in assessing the shadowing effect of other buildings as well as different parts of the same building. Thanks Masoud Masoud Malekzadeh PhD Student Department of Civil and Building Engineering Loughborough University Leicestershire, UK LE11 3TU Tel: +44 1509 223434 Fax: +44 1509 223981 E-mail: M.Malekzadeh@lboro.ac.uk _______________________________________________ TRNSYS-users mailing list TRNSYS-users@engr.wisc.edu https://www.cae.wisc.edu/mailman/listinfo/trnsys-users
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