[TRNSYS-users] Calculating Hours Under set point//Unmet hours

[Bishan Thapa <bthapa1@uncc.edu>]

Hello everyone,

I was looking to calculate hours under set point which counts the unmet hours excluding the night set back. I need to do that for first three months and last two months of year as those are only the heating periods for me.

I have developed preliminary equation in equation tab.

2160 =end of march

7296 = beginning of november

K1 = LE(time,2160)

K2 = GE(time,7296)

HUSP = K1*LT(temp,21) +K2*LT(temp,21)

But this calculation includes the night set back temperature as well which is 18 C. How to avoid including the night set back temperature in the calculation ?

Thank you

Bishan Thapa

UNCC