Dear TRNSYS users,
I took a look at the example for TYPE 703 - Slab on grade and I saw that the weather file is for Wisconsin-Madison. Parameter 10 in Type 703 - Day of minimum surface temperature is set to 36. But I imported the weather file in Excel and checked if that is correct and I found that the day of minimum ambient surface is 28. Is there a mistake in the example or the way I checked isn't correct?
I also need to find the amplitude of surface temperature, which is the difference between the maximum average monthly
temperature and the minimum average monthly temperature. Do I have to average the hourly temperature in the imported weather file in Excel for every month to find the two average temperatures? Or is there an easier way? The defined value in TYPE 703 is 13.32 and I have a question about this value too. From the weather file I imported in Excel I found that the average temperature in january for Wisconsin-Madison is approximately -8 degC. I didnt't checked for the rest of the months, but assuming that this temperature is the minimum average temperature and that the maximum average temperature is a positive value (for example 20 degC in july), then the amplitude would be A=20-(-8)=28 degC. This value is much greater than 13.32. Is there a mistake in the way I determined the amplitude?
I also checked the mean surface temperature and I found that it is 7.96 degC, exactly as the defined value in TYPE 703.
Thank you for answering my questions,
Vali Gheorghisor