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Re: [EnergyPlus_Support] zoning
I am not sure which particular portion of the University Course you are
referring to, but the intent is certainly not to encourage a zone for every
terminal unit.
As Linda mentioned earlier, there are many philosophies and approaches to
zoning. One approach is to start with one zone, then determine what portions
of the building are significantly different based on: setpoints, internal load
intensity, schedules, solar gains, equipment type. Also consider that a zone
does not have to be a contiguous set of rooms, and a zone can span vertically
across floors as well as horizontally.
For your building, if all spaces have similar internal gains and similar
schedules, then consider 20 zones:
Ground floor: N, S, E, W, and core
Floors 2, and 4-6: N, S, E, W, and core (be sure to add internal surfaces or
internal mass to reflect the mass of the ceiling/floor constructions)
Floor 3: N, S, E, W, and core (you said this floor has different type of
equipment)
Floor 7: N, S, E, W, and core
The numbers of zones per floor (or group of floors) is dependent on the shape
of the building. A long narrow building may be adequate to have 2 zones per
floor. An H-shaped building may need more than 5 depending on the varying
timing of solar loads throughout the day.
Mike
On 24 Dec 2005, at 7:05, kir kumar wrote:
> Dear Linda,
> I read the documentation you mentioned about zoning,
> but still that does not solve my problem.
> Actually I want to calculate two things.
>
> 1.Energy consumption of the entire 7-storey
> building(each storey with 2 air handlers and each air
> handler takes care of approximately 14 rooms(all rooms
> are at same set point temperature) and each room with
> its own air terminal unit(SINGLE DUCT VAV REHEAT)).
> 2.Energy consumption of space in the third storey
> which is being taken care by an air handling unit.
>
> In E+ documentation of energy plus university course,
> I read that spaces to which an air terminal unit(VAV
> single duct reheat) is attached must be considered a
> single zone. In that case I am afraid that I have to
> consider each room to which an air terminal unit is
> attached as a sinle zone which makes my input file
> quite complex.
> Please help me in zonning this building.
> thanks in advance
> kiran
> University of Arkansas.
>
>
>
> --- Linda Lawrie <linda@xxxxxxxxxx> wrote:
>
>
> ---------------------------------
>
> >EnergyPlus Documentation is searchable. Open
> EPlusMainMenu.idf and
> >press the "search" button.
>
> Putting "zoning" in the search leads to a good article
> in Gettting
> Started (page 31 of the PDF).
>
> There are several philosphies about zoning, there is
> not necessarily
> a "right" answer. For example, if each story has a
> large floor area,
> you may want to zone it with perimeter zones and a
> central/core
> zone. (Our "5Zone" example files illustrate this).
> On the other
> hand, you may be able to zone each floor as a single
> zone. The
> inaccuracies introduced are discussed in the section I
> mentioned in
> GettingStarted. And you may be able to use
> zone/group multipliers
> so that you would only have to describe one interior
> story and the
> exterior/roof story.
>
> It does depend a lot on what kind of answers you want
> from the simulation.
>
>
> Linda
>
> EnergyPlus WebSite: http://www.energyplus.gov
> Owner: EnergyPlus_Support list
> Member: EnergyPlus Development Team
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========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support
EnergyPlus-Support@xxxxxxxx
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