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Register now for a free December Building Energy Simulation Forum

DECEMBER 11, 2019 | 12:00 PM - 1:15 PM
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Modeling approaches for calculating cost-effectiveness of Dedicated Outside Air Systems

We’re excited to announce our next BESF session in December, focusing on the advanced tools and approaches used to accurately model Very High-Efficiency Dedicated Outside Air Systems (VHE DOAS).

These systems improve the overall efficiency of the DOAS concept by pairing a high-performance heating and cooling system (such as a heat pump or variable refrigerant flow) with a heat recovery ventilator or energy recovery ventilator and an optimized system design.

Analysis from five pilot demonstration sites in the Pacific Northwest shows an average of over 40% whole-building energy savings and over 60% HVAC savings compared to code minimum replacement of the existing equipment.

Current modeling tools require extra attention to more accurately model these systems. This session will cover advanced modeling approaches with a brief overview of results using OpenStudio and EnergyPlus for calculating the cost-effectiveness of VHE DOAS relative to other DOAS systems.

About the presenter:

Neil Bulgar, principal, Red Car Analytics

Neil is a principal and founding partner at Red Car Analytics. He has over 10 years of experience in low-energy HVAC systems, MEP design strategies and how to use energy simulation and analysis to inform trade-offs. Neil has worked on more than a dozen zero-net energy projects, providing detailed energy analysis and recommendations for building HVAC systems and architecture. He specializes in building energy use, energy modeling and translating how buildings function.



Wednesday, December 11

Webinar and webinar viewing event: 12:00-1:00 p.m.

Q&A: 1:00-1:15 p.m.


Webinar presentation through GoToMeeting


Hosted in-person webinar viewing at Ecotrust Building

721 NW 9th Avenue (2nd Floor, Billy Frank Jr. Conference Center)

Portland, OR 97209


Date: December 11, 2019

Time: 12:00 pm - 1:15 pm

Cost: Free

Event Category:


Energy Trust

Phone: 1.866.368.7878



721 Northwest 9th Avenue
Portland, OR 97209 United States
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