HOURLY SIMULATION WITHOUT THERMAL HISTORY - ANALYSIS PERIOD

Hi all,

to evaluate the difference between an annual analysis in E+ with and without thermal history (warmup+sim) we tried to develop a way to overcome the LB-limits of the analysis period component (switching from h24 to h1). But still we can't make it run.

Is there a way to achieve an animated one-by-one hour E+simulation with an alternative analysisPeriod-construction?

Thanks in advance,

Daniel

Attachments:

150722_HOURLY TIMESTEP.gh, 434 KB
timestep.jpg, 187 KB

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Permalink Reply by Chris Mackey on September 6, 2015 at 11:10am

Daniel,

I believe that EnergyPlus requires a minimum of 1 warmup day and, if the warmup conditions do not converge to a stable value in the warmup period, E+ gives you a severe error to tell you that you simulation is probably wrong. That is why we write the default values in if you put in warmup days that are <= 0.

I haven't checked the E+ Input/Output reference enough to know if there is a way to plug in custom conditions for the warmup period:

http://bigladdersoftware.com/epx/docs/8-0/input-output-reference/

If you find something in there that sounds like it will do what you want, let us know and I can try to implement it in Honeybee.

I am not sure which attachment you are referring to in your most recent post.

-Chris