Marshall,I am trying to create a pitched roof for a building (a wall that has a slope). I have created two new orientations, NSLOPE and SSLOPE, in TRNBUILD. Then I created two new surfaces in the input for weather data (type 109). This created 6 new output variables for each of the new surfaces. How do I go about connecting these outputs from the weather reader to the input of type 56? Can I create a connection between the weather reader and the type 56 and connect the variables?once the new surfaces are defined in Type109, right click on your Type56 in the Studio and tell it to "update building variable list." You should have three new inputs for each orientation that you defined in TRNBuild. Then either open an existing connection between Type109 and Type56 or make a new one and connect the appropriate output and input variables as you would between any two TRNSYS types. Also what are the input variables labeled "CNAT_1" for type 56?that is not a standard input to Type56 so it pertains to something that you defined in TRNBuild (or something that was already defined in the *.bui from which you began). Look through the various managers in TRNBuild to determine where that input is being used. I am also modeling my building with a crawlspace underneath the first floor. What is the best way to model the natural earth (dirt) floor of the crawl space? Should I create a layer that is similar to rock or dirt and declare it as a boundary wall? I've tried using the gravel_sand layer from the library and the dirt floor but when I declare it as a boundary I always get an error.The most correct method would be to define a layer of earth (perhaps 10cm of it) as a BOUNDARY wall for the bottom and define whatever the walls are (concrete perhaps) also as BOUNDARY walls, then connect those to one of the basement ground coupling models in the TESS Ground Coupling Library (if you have access to it.) Without that library, you can use the ASHRAE f-Factor approach to estimating the effective resistance of the earth but that method is not all that accurate as has been shown in some recent work by the IEA. Kind regards, David --
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Thermal Energy System Specialists (TESS), LLC
David BRADLEY 22 N. Carroll Street - Suite 370
Partner Madison, WI 53703
USA
P: +1.608.274.2577
F: +1.608.278.1475
E-mail: bradley@tess-inc.com
Web Pages: http://www.tess-inc.com and http://www.trnsys.com
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