[TRNSYS-users] Type 109 user problems again

[Jianhua Fan]

Dear Trnsys users,

 

I have problems with type 109 user format. The 109 user type works all right with my weather data for Copenhagen with the latitude approx. 56°, while it is very strange with my weather data for Greenland with the latitude 70.7°. The problem is that there is no solar radiation in a period in summer when it is supposed to have solar radiation. The problem will disappear by simply changing the latitude to 56, but that is not the right solution. 

 

The Trnsys I am using is  16.01.0002.

 

I am frustrated with type 109 user and thinking about switching back to TRN 14 which I am sure does not have this kind of stupid problem. Can any body help me out

 

Herewith I send you all the tpf file and the weather data file in view that some of you might know the reason. In order to run the simulation, two nonstandard dlls are needed. They are also enclosed in the email.

I am looking forward to hearing from you.

Thank you in advance.

 

Best regards

Jianhua Fan

______________________________________

Department of Civil Engineering

Technical University of Denmark

Building 118, Brovej

DK-2800 Kgs.Lyngby

Denmark

 

Phone: +45 45 25 18 89

Fax: +45 45 93 17 55

E-mail: jif at byg.dtu.dk <mailto:jif at byg.dtu.dk> 

______________________________________

 

________________________________

From: Christos Stergiou [mailto:chris_s1285 at hotmail.com] 
Sent: 20. juni 2007 00:52
To: Trnsys e-mail list
Subject: [TRNSYS-users] Problem using type-16

 

Hello everyone,
I am trying to study the energy consumption of an hypothetic office building in Athens according to each orientation using type-56. I have data only for total radiation, temperature and relative humidity and therefore i am trying to use type-16 to get values for the beam radiation needed in type-56. The data are imported with type 9a. The problem is that i get too many warning messages that beam radiation exceeds the extraterrestrial radiation and that the total radiation exceeds the solar constant. I tried using type-16a and 16c with all possible tilted surface modes (perez model, reindl model etc.) but i managed only to reduce the messages while the output values of my study are not acceptable since i conclude that northern windows are preferable to southern ones. Also i have to mention that as i am turning the building and the azimuth of each surface is changing, error occurs because of the number of the warning messages and as a result i can't run the project.  The minimum warning messages occurred using type 16a with perez model. I ran again the project using type-109tmy2 with different data acquired from meteonorm, where type 16 is not needed, and no problem occurred. Any help or suggestion is appreciated.
 
                                                                                                                       Thanks in advance,
                                                                                                                               Christos

________________________________

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