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Hello, I’m modeling loads on an underground space to see if
we need cooling during the summer. Using
the method outlined in the Building Energy Simulation User news Vol. 23, No. 6,
page 19 (http://gundog.lbl.gov/dirun/23n_d_1.pdf),
I’m getting negative fictitious R-values for some long short walls (Example:
F2 = 0.78, A = 778ft^2, P = 156ft, Rus = 8.27). Am I correct in reducing the R value of
my wall construction to meet the effective R-value? It seems strange to be reducing the
R-value of a construction that is physically there. I imagine the only real reason for this
would have to be that the ground temperature is actually lower near the surface
than listed in the weather file, but would this be true on a sunny afternoon? Thank you, - Wood/Harbinger, Inc. (425) 822-9499 x188 =====================================================You received this e-mail because you are subscribed to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@xxxxxxxx |