One of my coworkers has spent quite a bit of time trying to find Title 24 California Nonresidential ACM (Alternative Compliance Manual) Reference Manual Appendix 5.4B which is supposed to have elevator schedules for different building types but keeps hitting dead ends. In particular, he gets dead links, or the documents that are referenced only specify the ventilation and lighting requirements in elevators.
Does anyone know of good elevator schedules for different building types? Anything you can provide would be appreciated.
POST SCRIPT
This whole thing started when we looked at the fraction of energy used for the elevators in the DOE reference models.
All the literature we've found says that elevator use should be 2%-5% of total energy use for the building, and the only one that gets close is the Large Office model, but that one has a very energy intensive data center in it, so that one is probably off too. The two options for correcting the elevators are the schedules are a little off or the maximum Watts of the elevators is off. We are investigating the schedules first.
In response to @MatthewSteen's answer, if you download 90.1-2016 Large Office from the IDFs link and open ASHRAE90.1_OfficeLarge_STD2016_Albuquerque.idf, the schedule for the elevators is
Schedule:Compact,
BLDG_ELEVATORS, !- Name
Fraction, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: SummerDesignDay, !- Field 2
Until: 24:00,0.5, !- Field 3
For: WinterDesignDay, !- Field 5
Until: 24:00,0.05, !- Field 6
For: AllOtherDays, !- Field 8
Until: 04:00,0.05, !- Field 9
Until: 05:00,0.10, !- Field 11
Until: 06:00,0.20, !- Field 13
Until: 07:00,0.40, !- Field 15
Until: 09:00,0.50, !- Field 17
Until: 10:00,0.35, !- Field 19
Until: 16:00,0.15, !- Field 21
Until: 17:00,0.35, !- Field 23
Until: 19:00,0.50, !- Field 25
Until: 21:00,0.40, !- Field 27
Until: 22:00,0.30, !- Field 29
Until: 23:00,0.20, !- Field 31
Until: 24:00,0.10; !- Field 33
We actually knew about this, and we thought the schedule was inaccurate since office buildings typically have different behavior on the weekends and the schedule is the same on the weekends as the weekdays.
Looking at the Google Sheet, the schedule is the same, which is not surprising since the DOE reference models are based on the DOE Commercial Prototype Building Models.
Models. However, if you look further in the sheet, there are more accurate schedules. For example, on lines 11172,11173,11174 there are schedules for the Large Office BLDG ELEVATORS
Elevator
Default|WntrDsn|SmrDsn
1-Jan
31-Dec
Hourly
0.05
0.05
0.05
0.05
0.1
0.2
0.4
0.5
0.5
0.35
0.15
0.15
0.15
0.15
0.15
0.15
0.35
0.5
0.5
0.4
0.4
0.3
0.2
0.1
From DOE Reference Buildings
that don't change on the weekends, but then on lines 12137,12138,12139 there are schedules that are different on the weekends for the Large Office.
TO INVESTIGATE
Another possible lead is from @Patrick Bivona in this post, "You can find the elevator schedule for different building types in ASHRAE 90.1-2007 User's Manual, pages G-39 to G-49." I'll post whether or not the schedule is more realistic here once we buy it.
Another avenue is from @MatthewSteen is calling the CEC and asking about the published Title 24 elevator schedules, which are supposed to be in "California Nonresidential ACM (Alternative Compliance Manual) Reference Manual Appendix 5.4B", which we haven't been able to locate.
Good elevator schedules may also be in CBECC-Com as recommended in this post.
To be continued...
