Robb Aldrich
Username
Robb Aldrich
Proposer First Name
Robb
Proposer Email
raldrich@swinter.com
Proposer Last Name
Aldrich
Proposer Company/Organization
Steven Winter Associates
Proposer Phone
(203) 857-0200
Proposer Job Title
Engineer
Boston 2023 Areas of Focus
Proposed Session Description
Speakers will review findings from a DOE-sponsored study of VRF performance in three new, multifamily buildings in New York City. Two of the buildings are affordable Passive House properties. The study focused on humidity control in apartments; during the summer of 2023, average RH was often 65-70%. The study identified some clear DOs and DON’Ts, but it also highlighted additional questions about this technology.
Diversity and Inclusiveness
Two of these buildings are affordable multifamily properties (one in the Bronx, one in Harlem), and early data shows that humidity control is extremely poor. Designers and developers desperately need real-world results to help them provide acceptable IEQ with new technologies.
Learning Objectives
Confidently size heating and cooling equipment based on rigorous load calculations.
Include rigorous commissioning of HVAC to achieve good performance from newer technologies.
Assess humidity control as well as temperature control.
Weigh VRF advantages and limitations when selecting equipment
Has this session been presented before?
No
Target Audiences Level of Expertise
Level 3 - Prior knowledge strongly recommended.
Session Format
Presentation followed by facilitated discussion or breakout groups
Session Format Details
30-40 minute presentation of research findings followed by 20-30 minutes of questions and discussion
Recommended Length
60-minute session
Strongest Content Connection - Boston 2023
Comments about your speaker roster
Over six people at SWA have been deeply involved in this research. Schedule for one listed speaker is uncertain, but two people will be available to give a dynamic presentation.
Reviewer 1
Tilton, Clay
Reviewer 2
Bhargo, Joytika
Proposal #
207
Committee Decision
Being Considered
Presenters
Full Description
Variable refrigerant flow (VRF) systems are becoming common in commercial and multifamily buildings. Real-world performance data on these systems, however, has been rare. Thee session will summarize findings, specific VRF and ventilation performance issues, and steps taken to commission and improve systems.