Presentation to HOK

2rw.com NET ZERO ENERGY. SITE < or = renewable energy generated Building produces as much energy as it uses over the course of a year – measured at the site boundary.

2rw.com NET ZERO EMISSIONS. SITE < or = renewable energy generated Produces at least as much emissions-free renewable energy as it uses from emissions-producing energy sources.

2rw.com HOW WE GO ABOUT IT Reduce your building energy demand as low as possible and supplement with renewable energy to achieve Net Zero. “Low” is a level at which the payback on the investment in a renewable energy system is less than the life of the system – in other words, the renewable energy savings pay for the system before it fails. Pre-Design Benchmarking Set targets for energy usage index “EUI” – bldg gross sf / annual energy use – a good starting target for education facilities: kBtu/ft 2 /yr (v. 75 kBtu/ft 2 /yr nat’l avg)

2rw.com INTEGRATED DESIGN PROCESS Team Work / Collaboration among Owner & Design Team Build the team - building users & operations staff, architects, engineers NZ is the goal from the very first design charette Building Orientation & Form Wall-to-area ratio Window-to-wall ratio

2rw.com INTEGRATED DESIGN PROCESS Team Work / Collaboration among Owner & Design Team Envelope heat transmission values Daylighting MEP systems alternatives Energy modeling + optimization Estimate renewables

2rw.com REDUCE ENERGY USAGE Be practical … There are plenty of opportunities and there is no need to suffer Select MEP systems that are readily maintainable and offer high-efficiency operation –geothermal, water source heat pumps –condensing boilers / water heaters –LED lighting Use emerging high-performance technologies that have matured LED site lighting, downlights & grid troffers Segregate loads to encourage monitoring and management of them The Building Automation System should provide data that is useful to the operations staff Net ZEB’s need occupants to become much more engaged with the operation of their buildings

2rw.com Evaluate Every System to Reduce Loads and Construction / Operating Costs IT and LV systems –laptops in lieu of desktop computers –central printer stations –WAPs & VOIP phones –battery-powered wireless clock systems Plug loads –copiers –Appliances –Energy Star Appliances LEAVE NO STONE UNTURNED

2rw.com REDUCE BUILDING ENERGY DEMAND Net ZEB’s need occupants to become much more engaged with the operation of their buildings Occupant education and engagement programs –Incentivize occupants to reduce energy use –Use the building as a teaching tool Monitor plug loads separately to encourage monitoring and management by the owner

2rw.com MEP TO REDUCE ENERGY CONSUMPTION Food Service Demands “no-grease” cooking variable flow hood exhaust DHW use cooking equipment water source coolers & freezers

2rw.com MEP TO REDUCE ENERGY CONSUMPTION Plumbing Water efficient fixtures Solar thermal, geothermal heat pump Decentralized water heating – storage and instantaneous type Drain water heat recovery

2rw.com MEP TO REDUCE ENERGY CONSUMPTION Mechanical Radiant heating/cooling Geothermal, water source Condensing boilers Energy recovery Demand controlled ventilation “Green light” mode Standing column well Not necessarily new technologies, just more careful application.

2rw.com MEP TO REDUCE ENERGY CONSUMPTION Electrical PV LED fixtures Occupancy controls Daylight harvesting

2rw.com DESIGN THE BUILDING FOR PV If not now … later: Make sure there is sufficient … roof and/or ground space to locate PV panels – don’t overlook shading electrical room space for inverters Discuss buy-back rates and incentives with your Utility provider

2rw.com TUNE YOUR ENGINES It works in theory … but does it work? Team Selection Owner’s Requirements Commissioning Plan Basis of Design Construction Checklist Design Reviews Field Coordination Performance Testing Field Verifications Submittal Reviews Owner Training Warranty Verification Systems Manual Delivery Envelope commissioning Systems Testing, Adjusting & Balancing Monitoring & Verification Initial commissioning – Seasonal Post-occupancy evaluation Continuous systems commissioning Annual energy check-ups & reports

2rw.com th Street NE Suite 202 Charlottesville, VA Connecticut Avenue NW Suite 200 Washington, DC Peachtree Street Suite 418N Atlanta, GA THANK YOU! QUESTIONS? VCU Inger & Walter Rice Center for Environmental Life Sciences Education Building