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RE: [EnergyPlus_Support] A question about Zone List Multiplier
Mike,
I was using Zone list multiplier (for a 6 story building - I created 3
floors and used the multiplier for middle floors) with Autosize option. I
get the following warning messages. How can I get rid of these warning
messages or in other words how does it affect the accuracy of results? When
I created a 3 floor building i.e. without multipliers and associated
changes, then there were no warnings.
** Warning ** SimHVAC: Maximum iterations exceeded for all HVAC loops, at
SAN_FRANCISCO CA USA TMY2-23234 WMO#=724940, 01/14 10:59 - 11:00
** Warning ** SimHVAC: Maximum iterations exceeded for all HVAC loops, at
SAN_FRANCISCO CA USA TMY2-23234 WMO#=724940, 01/14 11:13 - 11:14
** Warning ** SimHVAC: Maximum iterations exceeded for all HVAC loops, at
SAN_FRANCISCO CA USA TMY2-23234 WMO#=724940, 01/14 11:45 - 11:46
** Warning ** SimHVAC: Maximum iterations exceeded for all HVAC loops, at
SAN_FRANCISCO CA USA TMY2-23234 WMO#=724940, 01/14 15:26 - 15:28
** Warning ** SimHVAC: Maximum iterations exceeded for all HVAC loops, at
.....
Thanks
Mahabir
-----Original Message-----
From: Michael J. Witte [mailto:mjwitte@xxxxxxxx]
Sent: Wednesday, January 26, 2005 2:40 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] A question about Zone Lise Multiplier
Yes. Zone Multiplier and Zone List Multiplier are applied to zone level
loads.
All HVAC equipment serving a multiplied zone must have increased capacities
and flow rates to serve the multiplied load, even zone equipment such as
radiant slabs, window AC, fan coils, etc. There is no HVAC system
multiplier
in EnergyPlus.
Mike
On 26 Jan 2005, at 11:11, Zhen Tian wrote:
>
> Hello, everyone:
>
> I have a question about using the "Zone List" & "Zone Group" objects.
Right
> now, I just simulate one typical floor for a multi-floor building. Since
the fan
> energy use is not linear to the air flow rate. I am considering using the
zone
> list and zone group to mimic this multiple floors.
>
> In my model, I set up zone list and then Zone Group and set "zone list
> multiplier" as 6. Then I increase the system air flow rate, chilled water
flow,
> hot water flow and other system parametrics also 6 times to match the
reauired
> air flow and so on.
>
> Do I need to multiply zone equipments capacity? For example, if I have
radiant
> cooling slab system and baseoard, do i need to multiply this capacity of
> equipment? And do I also need to multiply the "zone air flow rate" and
> associated capacity of reheat coils?
>
> Thanks for your help.
>
> Regards,
>
> Zhen
>
>
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========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support
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 not allowed -- please post any files to the appropriate
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