My advise is to reference the relevent section of the engineering reference for the rating calculations which states that the rating value calculations are done as per the AHRI standards, which also show how performance data is entered by the user as "gross", i.e. that the fan heat is is seperately considered during simulation, but is included for the equipment rating calculation as required by AHRI.
It is however YOUR responsibility to understand and enter the "gross" values in your dx object, i.e. the rating values before fan heat is considered for values such as "rated capacity", "rated CoP" as required by the dx object. The fan heat is added during the rating values calculation as per your entry of specific rated fan power in W/m^3/s and rated flowrate in m^3/s. This is not automatically tied in with how you define your fan object elsewhere, but should do.
Essentially e+ runs the unit through the test points just like described in the AHRI standards.
Mit freundlichen Grü�en- Sent from my iPhone (excuse the brevity)
i. A.
Jean Marais
b.i.g. bechtold
Tel. +49 30 6706662-23
On 19.02.2015, at 21:46, "iluminasol33@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
Thank you Jean for your answer, I will try your suggestion and will let you know once I solve it.
Additionally, I received the following comment from the LEED reviewer:"Because the efficiency ratings are calculated at ARI-rated conditions, the fans should also be broken out at ARI-rated conditions. Most simulation software programs have the capability to perform this step automatically. Provide documentation showing that this calculation has been performed by the software automatically or provide calculations consistent with the ASHRAE 90.1-2007 Userâ??s Manual showing that the calculation has been performed at ARI-rated conditions."I am sure that Energy Plus performs this automatically, but what I do not know is how to justify this to the reviewer, any suggestions?Regards,Santiago
__._,_.___
Posted by: "jeannieboef@xxxxxxxxx" <jeannieboef@xxxxxxxxx>
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
__,_._,___