[Equest-users] model VRF for LEED project

[Teerawat Wongkamolseth via Equest-users]

All,
I need to simulation in eQUEST an office building in Bangkok for LEED project.
This project used Daikin VRF system with fan-coil unit to control many zone. First, I selected PVAVS instead of PSZ (suggest by manufacturer guidance) because it have control zone.
For PVAVS, I revised a FAN-CONTROL to constant , Min Flow Ratio = 1 and then put zone assign flow as fan-coil unit spec per room.
I put system fan power by sum of fan-coil kW/cfm per system, system capacity as CDU spec and put all performance curve from manufacturer.

After reviewed, reviewer had a comment

a.      The narrative states that a packaged VAV system was modeled instead of a packaged single zone system as is indicated in the manufacturer's guidance.

However, this is inappropriate as each fan coil unit in the design is required to meet the space load as necessary while a packaged VAV is designed

to supply cool air to all spaces and either adjust the volume of air or reheat the air as necessary in order to maintain the space setpoint.

Based on the zoning of the spaces it is unclear if the cooling loads seen by each fan coil unit in the design will be consistent with the cooling load

seen by all of the units on each condenser combined.

How can I simulate VRF system for this project or answer this question?

Thank you in advance
Mr.Teerawat Wongkamolseth
Green Building Consultant
Architect

[Description: SCG Green Building Solution]

M : 081-933-7487, 089-767-3439
Tel : 02-586-5010
E-mail : teerawwo at scg.co.th<mailto:teerawwo at scg.co.th>


________________________________
This e-mail contains legally protected intellectual property right and confidential information. If you are not the intended recipient, please immediately delete this e-mail from your system and notify the sender. Any unauthorized usage of this e-mail may be subject to available legal proceeding. This e-mail may contain personal opinion of the author or information that does not relate to the business of The Siam Cement Plc., its affiliates and associates ("SCG") for which SCG shall not be liable. It is advisable that all e-mail be scanned by reliable virus protection software. SCG bears no responsibility for any damage possibly incurred by this e-mail.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160427/0d7b87e6/attachment-0005.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 6436 bytes
Desc: image001.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160427/0d7b87e6/attachment-0005.jpg>