Dear community,
I would like clarifications about the scope covered by the section 10-4 of the ashrae 90.1-2007: in an industrial project, there may be lots of electric motors related to the industrial process. Must these motors comply with the minimum efficiency requirements of the table 10.8?
Thanks for your clarifications,
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
April 1, 2013 - 3:46 pm
I think that only motors that are used for regulated purposes of the 90.1 Standard are covered by 10.4. So industrial motors would not have to meet all of the requirements.
OSCAR DE LA RED
LEED AP BD+CPROMEC
1 thumbs up
April 2, 2013 - 6:54 am
it is really mandatory to comply with section 10-4 of ashrae 90.1-2007 if building simulation is choosen to comply for EAP2?. If building efficiency comply with required percentage (5-10%) although electric motors efficiency is less than that in table 10.8, it is valid?
For projects and eelectric motors in Europe there is no other standart aplicable instead of NEMA? IEC 60034-30:2008 or EN/IEC 60034-2: 1996 standart are not valid?
There is not other rpm values? for table 10.8, usually it is work with 50Hz in Europe.
There is no ASHRAE compliance form, for this mandatory requirement?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
April 2, 2013 - 9:21 am
LEED project must comply with the mandatory provisions and show the minimum percent savings.
I am not aware if the European motor standards have been granted equivalency or not.
To be honest, unless you point it out in the documentation, this issue would not come up on a typical LEED review. Although the electrical engineer (or other party) is stating that the project complies with the mandatory provisions.
Valentin Grimaud
Thermal EngineerTERAO Green Building Engineering
43 thumbs up
April 4, 2013 - 6:17 am
Thank you Marcus,
If industrial motors do not have to meet the requirements, can I still claim savings on the process energy cost if the installed motors are more efficient than what is stated in the table 10-8? In other words, can I consider these tabled efficiencies as "conventional practice"?
I am referring here to the language of the table G3.1, section 12.
Thanks for your clarifications,
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
April 4, 2013 - 9:27 am
Oh so you want your cake and eat it too? :-)
You can claim savings but would need to do an exceptional calculation. Using these efficiencies as the baseline makes sense to me.
Francesco Passerini
engineer90 thumbs up
April 4, 2013 - 10:10 am
Shouldn't the local conditions be considered? I mean, ASHRAE documents are conventional practice for the United States, but in other countries other documents should (shall?) be considered, shouldn't they?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
April 4, 2013 - 10:40 am
Yes they should. So if the local country or region has a set of standards that is reasonably equivalent to the US-based ASHRAE standards you can always make the case for using the local requirements and practice.