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Re: [EnergyPlus_Support] Possibility of reducing time steps (heating assessment)

At 01:22 AM 1/22/2004, P. Roosen wrote:

>In my understanding the smallest time step is 1/6th of an hour which
>would not be adequate for this kind of investigation.

If all you need to do is change the number of time steps in hour, you can 
do this (advanced feature), by changing the line in the Energy+.idd:

TIMESTEP IN HOUR,
        \unique-object
   N1 ; \field Time Step in Hour
        \required-field
        \note Number in hour: validity 1 to 6: 4 suggested
        \note Should be evenly divisible into 60
        \note Specifying 6 as maximum as higher values may cause instability.
        \default 4
        \type integer
        \minimum 1
--->       \maximum 6

to     \maximum 60

This would actually allow you to specify a timestep in hour of 60 (1 minute 
time steps).  As the note says, they may cause instability but we have run 
some simulations.  It will still need to be evenly divisible into 60... so 
30 (2 minute time steps) will also "work".



Linda

EnergyPlus WebSite: http://www.energyplus.gov
Owner: EnergyPlus_Support list
Member: EnergyPlus Development Team



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