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Energy Plus simulation and compliance with ISO 13790 and 52016-1

asked 2018-08-09 04:34:00 -0500

lukanuts's avatar

updated 2018-08-25 11:23:46 -0500

I would like to know whether is it possible to use E.Plus for the above-mentioned standards, since the simplifications made in those norms , at a first glance, don't perfectly match the purposes of the software.

EU's Levels framework states

Where a dynamic simulation tool is not available nationally, a number of international tools are available, some of which are free to obtain – for example, EnergyPlus. Suitable dynamic simulation tools shall have been validated according to the procedures of EN ISO 52016-1, EN 15265 or ASHRAE 140 (the latter two being based on the BESTEST method). Tools that are known to already have been validated accordingly include DOE2, BLAST, ESP, SRES/SUN (SERIRES/SUNCODE), SERIRES, S3PAS (LIDER/CALENER), TAS, TRNSYS and EnergyPlus."

I have found this grasshopper application, but i don't think it could help to calculate the operative temperature.

Any references would be very appreciated.

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answered 2022-07-19 23:33:19 -0500

updated 2022-09-23 14:07:43 -0500

ISO 13790 is a precedent version of ISO 52016. Many have tested and reported the percent differences of monthly aggregated heating and cooling demand between a well implemented ISO model (such as the EPC calculator by Georgia Tech) and EnergyPlus is within 5-10%.

The ISO model has a interior surface node (θs) that is connected to the air node (θair).

The operative temperature can be calculated with the following equation per EN ISO 13790 C.12:

θop = 0.3 × θair + 0.7 × θs

The operative temperature is a weighted average of the air and mean radiant temperatures, weighted by the internal surface convective (3/8) and radiative coefficients (5/8). The value of θs is a mix between air and mean radiant temperature.

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Asked: 2018-08-09 04:34:00 -0500

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Last updated: Sep 23 '22