[Bldg-sim] Representing Hotel Occupancy (UNCLASSIFIED)

[Eurek, John S NWO]

Classification: UNCLASSIFIED
Caveats: NONE

Good luck.

This is a common problem, typically nothing is typical.  It is all up to
judgment.

The "typical patter" is hard to define.  My parents are part owners of the
hotel in a small town.  Typically it is empty but it fills up during
holidays, the busiest holiday is Opening Day of Hunting Season.  I'm sure
Vegas has a different "typical patter" as does the KC air port hotel, ect.  

If I was modeling 200 guest rooms and wanted different schedules I would make
5 schedules. A, B, C, D and E, then assign them to the various guest rooms.
To create the schedules I would suggest talking to the owner, use judgment,
and keep in mind the goal/purpose of the model. [And see what give you the
most point. :-P]

This is just a discussion point but 'Guest rooms' are either occupied or not.
>From what I understand, if you have 10 offices each with 1 person and the
occupancy schedule says 25%, it means that there is 1/4 of a person is in
each office (Happy Halloween!).  But offices are usually on a common system.
Each guest room will be independent, so I would assume the guest room
schedules will either be 100% or 0%.

John Eurek PE, LEED AP

-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Jim Dirkes
Sent: Friday, October 21, 2011 10:52 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Representing Hotel Occupancy

Dear Forum,
Assuming:

*        10 story hotel with 200 guest rooms facing all compass directions 

*        Each guest room has HVAC and outdoor air from a through-the-wall
heat pump

How can I create a simple modeling scheme and schedules which will reflect
normal occupancy variations?

As I think about it, the reality of operation is quite different than a
central HVAC unit, because random individual rooms can be completely off,
while others are on.  Room temperature, ventilation and fan power are all
affected.  There will be no predictable pattern for which rooms are unused or
unoccupied.  ASHRAE does have some typical use patterns in their 90.1 User
Manual but, for example, they assume 100% on time for fans.  That's too
coarse for my taste, and will overestimate energy substantially.

I REALLY don't want to model 200 individual zones with varying schedules!  I
know that I'm not the first one to wrestle with this idea, so I am hoping for
some creative insight from you.

Thanks in advance!

 

 

Description: BPT BizCard JVDII Updated

 

Tolerance is not agreement.  Tolerance is precisely the willingness to
restrain from the use of coercion. (and who hasn't experienced the benefit of
respectful, constructive disagreement?)

 


Classification: UNCLASSIFIED
Caveats: NONE