Net Zero Building Commissioning Phillip Saieg, CEM, LEED AP O+M Josh Harwood
AIA Quality Assurance The Building Commissioning Association is a Registered Provider with The American Institute of Architects Continuing Education Systems (AIA/CES). Credit(s) earned on completion of this program will be reported to AIA/CES for AIA members. Certificates of the Completion for both AIA members and non-aia members are available upon request. This program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation. 2
Learning Objectives 1. Attendees will be able to Understand what Net Zero Commissioning is - specifically what is different about this compared with traditional commissioning. 2. Participants will be given the specific approaches needed to perform net-zero commissioning 3. Participants will understand how to engage in the net-zero commissioning process 4. Attendees will understand the Net Zero Commissioning process after the building is occupied by dovetailing into an active energy management program 3
Net Zero Energy Definition: ZNE Districts? Net-Zero Carbon? Site Energy Vs. Source Energy Net-Zero Energy Cost? Net-Zero Capable 4
Four our purposes we will define Net Zero Energy as A building with greatly reduced energy needs through efficiency gains such that the balance of the energy needs can be supplied with renewable technologies. A building that produces as much energy as it consumes over the course of a year 5
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Net Zero Energy Definition as a concept: The Meter is always spinning, we decide the speed and direction 7
Why is Net-Zero Important for Commissioning Agents? Increasingly stringent code requirements and reference standards (IECC 2015, ASHRAE 90.1 2013, IGCC, LEED) Architecture 2030 Rising costs of electricity Multiple major cities have adopted net zero energy building requirements CalGreen (+ all state buildings ZNE by 2025) -California Federal government (E.O.13514) Public Sector 2020, 2030 goals Bottom line more clients are requesting/requiring net zero energy for new construction 8
Why is Net-Zero Important for everybody? Buildings are the Largest Energy Consumer in the U.S. 40% of primary energy, 72% of electricity, 55% of natural gas 9
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Not just the public sector 12
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Performance of ZNE Buildings 14
What is different about a ZNE building? 15
Absolute EUI Goal Energy Performance becomes the key metric for success If the building is not performing as designed commissioning is held responsible It is up to the commissioning agent to optimize and tune the building for performance It takes an operational mindset to achieve an operational goal 16
A few Key NZE Commissioning Differences Owner cares as much (or more) about energy outcomes than getting what they paid for More systems and more equipment are included in our commissioning plans and process Cutting (bleeding) edge systems and applications Extensive control system integration requires integrated system testing Owner will need more coaching and may need more training than usual on building systems Requires a more specific system expertise Requires more advanced planning Requires more OWNERSHIP 17
Commissioning of multiple complex systems is best done as a team approach 18
Common systems in ZNE Buildings Hydronic and radiant systems Energy storage Chilled Beams Ice Storage Variable Refrigerant Flow Ground/ Water Source Heat Pumps Advanced lighting control Integrated building systems Renewable energy systems (PV) Building envelope Automated shading devices Advanced plug load management Variable ventilation Dedicated Outside Air Systems Heat Recovery 19
A few more Key NZE Commissioning Differences As the focus on energy increases so does the need for monitoring and recording data. Identifying and ensuring the proper placement sub-meters becomes very important to identify end-use Energy monitoring system and dashboards Energy management at the circuit level (power strips, etc.) Integrated control strategies (e.g. lighting control + BAS control for occupancy sensing) Lot s of loop tuning Integrated design approach (earlier involvement from Cx) 20
Some tips for successful ZNE commissioning Set yourself up for success with a meaningful OPR Invest heavily in the early phases of design and model development (own it) Field and Execution Tips Perform a dry run of the control sequences at the vendors office before getting on site Calibration and proper placement sub-meters becomes very important to identify end-use consumption (Day)Lighting performance may only be achieved after multiple rounds of post-construction cleaning Commissioning photovoltaics should utilize thermal imaging to ensure panel performance 21
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Focusing on a specific energy goal requires more collaboration with the energy modeler What is performing or not performing? Who s doing M&V and who owns the model? 25
Measurement and Verification becomes a non-negotiable 26
Why stop with just M &V? Does the owner ever really do anything with a option D calibrated energy model? Ongoing Commissioning becomes critical to long term success 27
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The Bullitt Center 29
The Bullitt Center 30
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Packard Foundation 32
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NREL RSF Building 34
Pearl River Tower (A Near Net Zero Building) in Guangzhou, China The building is designed with energy conservation in mind, including wind turbines and solar collectors, photovoltaic cells, raised floors ventilation, and radiant heating and cooling ceilings. It will be arguably one of the most environmentally friendly buildings in the world. The largest radiant-cooled office building in the world 35
Phillip Saieg, CEM, LEED AP O+M McKinstry Josh Harwood McKinstry 303.215.4086 phillipsa@mckinstry.com