Zero Net Energy Technical Assistance Program for Municipal Facilities October 2018
Program Services ▪ Review portfolio of buildings for ZNE opportunity ▪ Support individual new construction projects – energy modelling, and design assistance for ZNE ▪ Assess retrofit opportunities, costs and feasibility of ZNE ▪ Different types of energy efficiency modelling, cost-benefit and support for design teams
Portfolio Projects City of Hayward ZNE City of Brisbane Strategic Portfolio Assistance
New Construction Projects Dublin Police Station San Pablo City Hall West Marin Service Center Millbrae Community Center
Retrofit Projects Oakland Manzanita Rec Center San Carlos Youth Center Berkeley Live Oak Rec Center Fire station 12 Fire station 25 Fire station 27 Oakland 911 Dispatch Center Oakland Fire Stations
Major Renovation Projects Richmond Public Works Building
City of Millbrae Recreation Center ~ Rebuild ~ Sustainable Measures RICAPS Presentation - October 23, 2018
DESIGN VALUES SUMMARY BUILDING SITE OPENING/ENGAGING P ARK OUTDOOR ROOMS BUILDING/LANDSCAPE INTEGRATION (COMMUNITY PORCH) INTERACTIVE PUBLIC SPACE TO PLA Y OUTDOOR ROOMS MASSING/SCALE MASSING/ SPACE (2 ND FLOOR PORCH) MA TERIALS MILLBRAE RECREATION CENTER OPEN PASSIVE ENGAGING LANDSCAPE ENTRY FOCAL POINT INVITING ENTRY SPACE 8
CONCEPTUAL DESIGN ROUND 1 OUTREACH COMPLETED Event # Attendees Open House ~72 Commu ~20 nity Meeti ng Online Survey ~338 Community ~11 Center Kiosk Farmers’ Market ~145 Self Help for ~50 the Elderly MILLBRAE RECREATION CENTER Lunch Taylor ~185 Middle School Lion’s ~86 Pancake Breakfast 9 Movie Night ~50
CONCEPTUAL DESIGN ROUND 2 SUMMARY COMPLETED Event # Attendees Online Survey 159 Carriage House Ribbon 51 Cutting Community Festival + 45 Movie Night F O L Book sale + 51 Rummage Sale Movie Night 44 Millbrae Wine Festival 352 Farmers’ Market 104 Self Help for the Elderly Lunch 30 MILLBRAE RECREATION CENTER Back to School – Taylor 23 Middle School Community Center Kiosks 24 Open House 46 TOTAL ~ 9 2 9 + 4
RECREATION CENTER SITE PLAN IN PROGRESS MILLBRAE RECREATION CENTER 1 1
PROGRAM DIAGRAM – FIRST FLOOR Two Story – 26,000 Square Feet MILLBRAE RECREATION CENTER 1 2
PROGRAM DIAGRAM – SECOND FLOOR MILLBRAE RECREATION CENTER 13
DESIGN OPTIONS EVALUATION ENTRY MILLBRAE RECREATION CENTER 14
DESIGN OPTIONS EVALUATION COMMUNITY HALL ENGAGING THE PARK MILLBRAE RECREATION CENTER 15
Budget & Timeframe Project Budget ➢ Estimated cost: $30 million, includes: Hard and soft costs for construction, parking, and associated outdoor • spaces, furniture, signage, technology, project contingency and escalation Other funding or method sought for solar installation • $12 million voter approval bond being sought from community • Other funding: insurance money, developer fees and selling property • Project Timeframe ➢ Break ground potentially in 2019 ➢ Complete building as early as 2021 (with voter approval in November 2018) MILLBRAE RECREATION CENTER 16
Sustainable Design Elements To reduce operational costs and increase efficiencies, the City Council and community members have placed a strong emphasis on the need for this building to be both environmentally responsible and operationally efficient. Operational efficiency and flexibility are key criteria being used in the development of the design for the new Recreation Center with ease of surveillance, independent access, and multi-use spaces being incorporated into the building plans. Sustainable Design Strategies: Water use reduction for Optimizing energy Building life-cycle analysis • • • building and site performance (high and application Heat island reduction efficiency equipment) Renewable and recycled • • (micro climates that are Renewable energy building materials • warmer in developed production (photovoltaics) Indoor environmental air • areas from human Daylight and daylight quality • activity) harvesting Minimizing construction • and demolition waste MILLBRAE RECREATION CENTER 11
Sustainable Design Elements ➢ LEED: Project will track LEED checklist and present to the City Council to decide on certification ➢ Solar: Plan is to install photovoltaic system to achieve zero net energy along with other measures ➢ BayREN - Zero Net Energy: Provided preliminary solar analysis and recommendations for roof slope and angels and assessed local wind patterns. BayREN provided a Zero Net Energy Assistance Report that answers: 1. The effect of massing on wind patterns and potential wind tunnel issues. A wind study was conducted to evaluate passive ventilation to reduce need for mechanical systems and energy load 2. What impact the roof direction and tilt have on annual solar generation per installed kilowatt MILLBRAE RECREATION CENTER 12
Wind Direction and Speed - Millbrae The windrose at left shows the speed and direction of wind at the site for a typical year based on weather data from San Francisco International Airport. Wind comes from the West, West-Northwest, or West-Southwest for approximately 60% of annual hours, with wind speeds that rarely crest above 13mph and are typically below 7mph. With the wind coming from such specific directions for a majority of the year, at nearly consistent low speeds, modeling has been performed for the following cases: • Direction of 292 ° with a wind speed of 7mph • Direction of 270 ° with a wind speed of 10mph Computational Fluid Dynamics (CFD) software has been used to analyze and visualize the impact of the proposed structures on local wind patterns. IES Virtual Environment’s MicroFlo CFD simulation software was used throughout. Typical wind direction = West / West-Northwest Typical wind speed = 0-6.7 mph 13
Solar Efficiency Analysis Roof design can have a significant impact on rooftop solar performance. When a building owner is purchasing enough solar panels to offset all local energy use, this impact can result in significant increased solar costs. Annual Solar Generation by Tilt in Millbrae Considering these impacts early in the design can save hundreds of thousands in capital costs for on-site (kWh/kW/yr) renewables. This page summarizes the effectiveness of rooftop solar based on roof design at the site. Methodology: PV Watts, a software created by the National Renewable Energy Lab (NREL) with Department of 30 degrees 1,616 Energy (DOE) funding has been used to assess the performance of solar photovoltaic panels at differing tilts and 20 degrees 1,585 directions. Weather data from San Francisco International Airport has been used for the assessment. 10 degrees 1,514 Comparing Tilt, All South Facing Flat 1,404 Tilt kWh per kW per year Payback Annual cost savings Annual Solar Generation by Direction in Millbrae 30 degrees 1,616 8.7 years $404 (kWh/kW/yr) 20 degrees 1,585 8.8 years $396 10 degrees 1,514 9.2 years $379 20 degree tilt SE-facing 1,505 Flat 1,404 10.0 years $351 Comparing Direction and Tilt 20 degree tilt S-facing 1,585 Direction kWh per kW per year Payback Annual cost savings 20 degree tilt SW-facing 1,547 1,505 9.3 years $376 Flat 1,404 20 degree tilt N-facing 1,108 20 degree tilt SE-facing 20 degree tilt S-facing 1,585 8.8 years $396 20 degree tilt NE-facing 1,174 20 degree tilt SW-facing 1,547 9.0 years $387 20 degree tilt NW-facing 1,213 Flat 1,404 10.0 years $351 4 degree tilt N-facing 1,355 20 degree tilt N-facing 1,108 12.6 years $277 20 degree tilt NE-facing 1,174 11.9 years $294 4 degree tilt NE-facing 1,365 20 degree tilt NW-facing 1,213 11.5 years $303 4 degree tilt NW-facing 1,374 4 degree tilt N-facing 1,355 10.3 years $339 4 degree tilt NE-facing 1,365 10.3 years $341 4 degree tilt NW-facing 1,374 10.2 years $344 MILLBRAE RECREATION CENTER 14
Sustainable Design Elements ➢ PG&E Savings by Design Program: • Incentive program that pays owners to design and build a new space that exceeds Title 24 by 10% or more • New construction includes: new buildings (Whole Building Approach), and gut rehabs and tenant improvement projects (Systems Approach) • Considerations: • Not all higher efficiency design elements are covered by Savings by Design and owners have had to fund the difference • Harder to achieve 10% with CALGreen being more stringent MILLBRAE RECREATION CENTER MILLBRAE RECREATION CENTER 15
Zero Net Energy CommunityPool City of Brisbane October 2018
Brisbane Community Pool - outdoor pool open year round
Existing Solar Thermal Panels - supplement gas boiler which is scheduled for replacement
Pool heatingoptions Option 1: Option 2: Option 3: Carrier Natural Gas Boilers AquaCal HeatPumps Electric Boiler Adult pool efficiency: 97% Efficiency: 5.35 COP Efficiency:100% Kids pool efficiency:82%
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