design builder simulation

asked 2017-12-20 04:15:50 -0500

renas gravatar image

updated 2017-12-20 11:15:24 -0500

hi iam studying the impact of insulation material (XPS) on building exterior wall in turkey by using design builder, but the results was a bit confusing, i have noticed a great decrease in heating load while the cooling load is increased a bit,, is it logical ??,, i feel like there is something wrong,,, i need help please !

for non insulated wall the heating and cooling load is 13221.09 kwh and 34903.88 kwh receptively for insulated wall with 4 cm extruded polystrene (XPS) the heating and cooling load is 10074.89 kwh and 35304.96 kwh repectively

edit retag flag offensive close merge delete

Comments

It might be if you have solar gain through windows especially with high thermal mass and Internal loads.

Avi gravatar imageAvi ( 2017-12-20 10:11:54 -0500 )edit

thanks for the quick reply ,, i really appreciate that ,,,, based on what you said i tried to decrease the building internal loads, like process and machine gain ,lighting gains ,, but it still the same !!! same problem happens with glazing ,, i changed the building window glaze from double 4 mm to double 6mm ,, the results showed a decrease in cooling load while there was an increase in heating load.. while i expected both to be decreased.. any other suggestions please ?

renas gravatar imagerenas ( 2017-12-20 12:22:46 -0500 )edit

@renas Could you post a link to your model (with weather file)? IDF file please

Avi gravatar imageAvi ( 2017-12-20 12:28:49 -0500 )edit

One other thing might be infiltration and ventilation

Avi gravatar imageAvi ( 2017-12-20 13:11:29 -0500 )edit

link text
here is the link ,, please have a look on it ... thank you

renas gravatar imagerenas ( 2017-12-20 13:52:18 -0500 )edit