E+ simulation control setting

asked 2015-10-31 09:10:46 -0500

ngkhanh
2156 ●1 ●3 ●12

updated 2017-05-08 15:46:46 -0500

__AmirRoth__

4436 ●5 ●17 http://bleedinggreenna...

Hello, i read the Engineer references and get the " Ideal Loads Sizing Simulations" and "ideal zonal system". It seems complicated for me. As far as my understanding, the setting " Do zone/system/plant sizing calc" work with design day period by " Ideal Loads Sizing Simulations" and "ideal zonal system". But:

1/ what is difference between an ideal zonal system/ideal load sizing simulations and a real hvac in this process ?

2/ What is the purpose of Run simulation for sizing periods ? i read that E+ sizing process also does sizing periods time-step calc for Do zone/system/plant sizing calc (please correct me in if i am wrong).

Thank

answered 2015-10-31 10:39:06 -0500

Yixing Chen

921 ●1 ●10 https://www.linkedin.c...

updated 2015-11-01 00:07:18 -0500

The "Ideal Zonal System" and "Ideal Loads Sizing Simulations" are the same thing. They only work in zone sizing period. The results from the zone sizing period will be used to determine the sizes of HVAC systems in system sizing.

The "run simulation for sizing periods" is similar to "Run Simulation for Weather file run periods". The "Run simulation for sizing periods" use the "SizingPeriod:" objects as the weather data, while the "Run Simulation for Weather file run periods" use "RunPeriod:" objects as the weather data. Both results are outputs to the *.csv and other output files.

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Thank i understood that but what happen when we do Run simulation for sizing periods ?

ngkhanh ( 2015-10-31 11:49:29 -0500 )edit

@ngkhanh The "run simulation for sizing periods" is similar to "Run Simulation for Weather file run periods". The "Run simulation for sizing periods" use the "SizingPeriod:" objects as the weather data, while the "Run Simulation for Weather file run periods" use RunPeriod:" objects as the weather data. Both results are outputs to the *.csv and other output files.

Yixing Chen ( 2015-10-31 12:58:41 -0500 )edit

@ngkhanh So if you use "SizingPeriod:WeatherFileDays", you can do the zone, system, and plant sizing, and simulation runs using the same period of weather data.

Yixing Chen ( 2015-10-31 13:02:27 -0500 )edit

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