[TRNSYS-users] U-value

[adnan rasheed]

Hi everyone,

Thanks David and Jakob for your help to adjust weather data in my previous
email. i got your point and it works.

i want to ask one question

1- i prepared new window type (using Window software) and import it into
TRNSYS. I want to see changing behavior the overall heat transfer
coefficient (U-value) of the new glazing material added by changing inside
and outside temp difference like delta T = 10, 20, 30 ,40,and 50). i am
using this equation to calculate U = Q / A( T)  where t is difference of
inside temperature and ambient temp. i am using type 56 for the simple
building structure. my results are very small change in u-value. and
simulation results doesn't satisfied the experimental results.

2- i am using type 2 energy demand for heating and cooling am
i taking wrong Q for the calculation. can i calculate u value by using
TRNSYS i am not sure in TRNSYS ist calculate U and then Q or calculate Q by
some other method????

3- (N-TYPE 50) in output can i get mathematical reference of this output
NTYPE  to make sure how this type calculate u-value of glazing and frame.


Thanks for your time .

Regards
Adnan
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