[Equest-users] HVAC Occupancy Sensors

[Manuela Mengue via Equest-users]

John,

See Appendix G – Table G3.2 (2) Occupancy sensor for Non-24h and <5000 ft2.

My question pertained to the HVAC component which achieves additional savings for installing occupancy sensors.

Best regards,

Manuela Mengue
Design Engineer

From: John Aulbach [mailto:jra_sac at yahoo.com]
Sent: Thursday, March 16, 2017 10:38 AM
To: Manuela Mengue <mmengue at dagherengineering.com>; 'equest-users at lists.onebuilding.org' <equest-users at lists.onebuilding.org>
Subject: Re: [Equest-users] HVAC Occupancy Sensors

Somewhere, in the mysteries of space, I have always been told to use 15% less lighting for the proposed case for occupancy sensors. I am unsure of the source. ASHRAE ??

John R. Aulbach, PE

On Thursday, March 16, 2017, 6:02:34 AM PDT, Manuela Mengue via Equest-users <equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>> wrote:

Hi all,



Has anyone succeeded to model HVAC occupancy sensors in eQuest? In this project, supply air from AHU units feed into VAV boxes in classrooms. The VAV boxes modulate airflow in accordance to occupancy sensor readings. The ASHRAE Table G3.2 allows us to take credit for lighting controls, however, I could not find guidance on HVAC occupancy sensors for energy models. My first approach would be to adjust occupancy levels in Proposed (how?), but this raises another question: doesn’t LEED require to use the same schedules in Proposed and Baseline?



Thanks in advance for your suggestions,



Manuela Mengue

Design Engineer


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