[Equest-users] question eQuest HVAC SYSTEM TYPE - please help

[Sami, Vikram]

Marina,

You will probably need to get into the detailed mode for this. If I understand – you have a DOAS with a 4 pipe FCU in the zones. One way to approach this is to use the 4pipe fan coil system and create a dummy zone with your DOAS. You need to assign your outdoor air from that system.

There’s probably an extended discussion on this somewhere in the archives.

Good luck!

Vikram Sami
BEMP, LEED BD+C
Associate Partner



ZGF ARCHITECTS LLP
T 206.521.3509 E vikram.sami at zgf.com
925 Fourth Avenue, Suite 2400
Seattle, WA 98104


From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Marina Mihalcea
Sent: Friday, January 30, 2015 5:18 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] question eQuest HVAC SYSTEM TYPE - please help

Hello,
I've just started using eQuest and I have a problem understanding how to select the proper HVAC system type for this situation.

I'm trying to model a 5 floor office building 57,156 sqf.
It has- cooling source: Chilled water coils, heating source: Hot water coils.
The building was realized with a Central AHU with preheat/precooling chamber of outdoor air (with 2 chillers and 2 boilers on the rooftop)
There are also fan-coil units in every office, which include cooling as well as heating (4-Pipe Fan Coils)  - system with no additional outside air ventilation supply - it recirculates the air from the room and provides supplementary cooling or heating for user preferences. There are CO2 sensors.
For me it seems like they are 2 system types in the same zone, but since this option is impossible to choose in equest, I don t know which system type to choose or how to combine this in one system?
I thought about selecting Multizone Air Handler with HW Heat, in the DD wizard, and combine fan coils plus dedicated outside air system and introduce the sum at the Power and Mtr Eff - for the Supply Fans?


Any help will be greatly appreciated.

tHANK YOU!


--
Arh. Dipl. Marina Mihalcea
tel. 0740 551 358
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