2018 NYStretch Second Multifamily Working Group Meeting

Transcription

1 2018 NYStretch Second Multifamily Working Group Meeting October 26, 2017 WebEx 2017, New Buildings Institute

2 Roll call and introductions of new Working Group members Jeff Domanski - IBTS

3 Agenda Roll call and introductions for new members Jeff Domanski (IBTS) Purpose and schedule update Jim (NBI) & NYSERDA Multifamily direction and considerations Jim and Sean (NBI) Update on Multifamily topics and proposals Jim and Sean (NBI) Review and update on modeling approach and analysis Bing and Jian (PNNL) Discussion and next steps All

4 Recap of Stretch Code Progress and Schedule Jim Edelson (NBI)

5 Revised Timetable MILESTONE DATE Kickoff June 8, st round Technical Working Group meetings July 2017 NYStretch-Energy Advisory Committee (Meeting 2) PRESENT DRAFT ENERGY ANALYSIS September 28, nd Round of Technical Working Group Meetings October 2017 NYStretch-Energy Advisory Committee (Meeting 3) PRESENT FINAL ENERGY ANALYSIS December 1st or 8th 2017 NYStretch-Energy draft December 2017 Legal review January 2018 Public comment February/March 2018 Toolkit updates May 2018 Final NYStretch-Energy May 2018

6 2018 NYStretch Development Process Advisory Group guidance - Make it rigorous but straightforward and achievable; backstop for best practices in building design/engineering Residential, Commercial, and Multi-family Working Groups reviewed Strawman measures generated by project team w/ Advisory Group guidance Modeling conference call discussed study design Iterative energy modeling to predict savings and fine-tune

7 Stakeholder Input Working Groups (3 in-person meetings and webinar) Commercial, Multifamily and Residential Working Groups Reviewed current stretch code development (eg 189.1, T24 ) Reviewed NYC Energy Code and Resiliency Guidelines Coordinated with Zero Cites Reach Code Development Public Comment Period Legal Review

8 NYStretch Resource Page

9 Multifamily direction and considerations Jim Edelson and Mark Lyles (NBI)

10 Some NYStretch Options for Multifamily 1. Residential Stretch for Low-rise MF and Commercial Stretch for High-Rise MF (status quo) 2. Unified Chapter for all R-2 3. Scope Change: All Low-Rise R2 to Commercial Section and Commercial NYStretch Boulder, CO 2017 code 4. Align Stretch Multifamily Measures between Commercial and Residential Codes CA Project, Chicago, IL Faubourg Lafitte, New Orleans, LA

11 Some NYStretch Options for Multifamily 1. Residential Stretch for Low-rise MF and Commercial Stretch for High-Rise MF (status quo) 2. Unified Chapter for all R-2 3. Scope Change: All Low-Rise R2 to Commercial Section and Commercial NYStretch Boulder, CO 2017 code 4. Align Stretch Multifamily Measures between Commercial and Residential Codes CA Project, Chicago, IL Faubourg Lafitte, New Orleans, LA

12 Proposals for NYStretch Improved Envelope Thermal Bridging Limitations Improved Infiltration & Testing Fan Efficiency Efficient Ventilation Lighting Efficacy Common Areas (RES) Efficient Exterior lighting (RES) Compare Menus of Options make comm. available to low-rise MF

13 Update on Multifamily topics and proposals Jim Edelson and Sean Denniston (NBI)

14 Review of 2016 NYCECC Compared against measures listed in NYStretch-Energy 2018 Commercial/Multifamily Strawmen Four items to note: 1. Performance path is Appendix G or ECB 2. Tenant sub metering has more specific requirements 3. SHGC is orientation neutral 4. Additional commissioning requirements for mechanical, renewable energy and service water heating systems

15 Modeling Compliance 2018 NYCECC language: C407.1 Scope. This section establishes criteria for compliance using total building performance. Buildings following the total building performance path must comply with ASHRAE , demonstrating compliance under Section 11 or Appendix G of such standard.

16 PHI & PHIUS Compliance Paths Prescriptive plus pathway Considering as an alternative path for envelope and air barrier requirements Pending DOS on viability Please us your thoughts

17 NYSERDA Study Assumptions about in-unit lighting plug load and hot water consumption varied PHI/PHIUS modeling tools are designed to model high performance buildings and may produce unreliable results when it comes to complex systems PHI/PHIUS incorporates savings from manual controls while Appendix G only allow credits for automatic controls inherent to design

18 Modeling EEMs (preliminary)

19 Energy Savings Analysis to Support NYStretch-Energy (2018): Energy Efficiency Measures Description Prescriptive requirements Distributed to WG on Wednesday

20 Elevators Suggestion from 9/28 advisory group meeting Include drive requirements from 2015 IgCC: Potential energy released during motion shall be recovered Reduce time to 5 minutes before systems need to go into stand by mode Apply to office, 10 and 20 story Multifamily and hotel prototypes Tracking 90.1 Elevator Working Group but also referencing data from Fraunhofer on savings potential Source: Fraunhofer USA

21 High-Efficacy Lighting Lamps 75 L/w (DOE Proposal 2018 IECC) Luminaires 45 L/W (IALD/Title 24) New Definition: A complete lighting unit consisting of a light source or sources along with parts required to distribute the light, to position and protect the light source(s), and to connect the lighting unit to the building s electrical system.

22 Ventilation Considerations Balanced Ventilation Ventilation/exhaust fan efficiency

23 Balanced Ventilation

24 Balanced Ventilation NBI Multifamily Guide Balanced Ventilation Measure 4% Savings

25 Balanced Ventilation NBI Multifamily Guide Balanced Ventilation Measure 4% Savings Pressurized Corridors required by code in NY or NYC?

26 Fan Efficiency All Fans used for heating, cooling or ventilation shall meet at least one of the following: 1. A rated cfm/w of no less than 3.5 for range hoods and in-line (single port & multi port) fans and 6.0 for bathroom and utility fans. 2. Served by an electronically commutated (brushless) motor. 3. For fans attached to motors over 1hp, a Fan Efficiency Grade (FEG) of 71 or higher.

27 Fan Efficiency All Fans used for heating, cooling or ventilation shall meet at least one of the following: 1. A rated cfm/w of no less than 3.5 for range hoods and in-line (single port & multi port) fans and 6.0 for bathroom and utility fans. 2. Served by an electronically commutated (brushless) motor. 3. For fans attached to motors over 1hp, a Fan Efficiency Grade (FEG) of 71 or higher.

28 Fan Efficiency Bath <90 CFM Bath >90 CFM In-Line Range Hood average median max Qualifying Count Total Count National Ventilation Database

29 Review and update on commercial modeling approach and analysis Bing Liu and Jian Zhang (PNNL)

30 Multifamily Buildings September 21,

31 MF Working Group Recommendations Two types of high-rise apartments representing New York Multifamily New Construction in NYC (1/16-6/17) Stories 20+ Stories # projects Avg. Area 136, ,162 Avg. # of floors Mixed Use? 68% 67% WWR 27% 45% Typical HVAC PTAC w/ boiler, VRF for amenities WSHP Source: New York City (Emily Hoffman) September 21,

32 Methods Representing New York State 4 commercial types 2 high-rise multifamily 60% floor areas 3 climate zones ( 4A, 5A and 6A) Baseline: Energy efficiency measures Input from the strawman discussion Individual EEM analysis Bundle analysis Modeling strategy and implementation Large Office Standalone Retail 10-story Apartment Large Hotel Secondary School 20-story Apartment QA results September 21,

33 Energy Savings Analysis to Support NYStretch-Energy (2018): Energy Efficiency Measures Description Prescriptive requirements Distributed to WG

34 Discussion All