Presentation on theme: "BROOKLYN NAVY YARD PERRY AVENUE BUILDING"— Presentation transcript:
1BROOKLYN NAVY YARD PERRY AVENUE BUILDING Building Mounted Wind – A Case Study
2The Brooklyn Navy YardLocated on the Brooklyn waterfront between the Manhattan and Williamsburg BridgesFounded in 1801 as a Federal Ship YardDecommissioned and sold to the City of New York in 1967Currently operated by the Brooklyn Navy Yard Development Corporation300 acre industrial parkOver 40 buildings4 million square feet of usable spaceOver 240 tenantsMore than 5,000 workersArtist RenderingSands Street GateCurrent
3The Brooklyn Navy Yard A Commitment to Sustainability Sustainability Goals:Coordinated strategy to offset the Yard's environmental footprint;A national model for sustainable industrial parks; andAn attractive location for green manufacturers and businesses.
4The Brooklyn Navy Yard A Commitment to Sustainability Sustainability Initiatives:• Reusing Navy-built buildings for their original industrial intent • Constructing first multi-tenant, multi-story industrial LEED Silver buildings in U.S. • Requiring new buildings and full-building renovations to be certified LEED Silver • Using green technologies for renovations and maintenance, i.e. Energy Star roofs, energy efficient windows and light bulbs • Undertaking a major water / sewer project to upgrade the Yard's aging infrastructure and improve water conservation; rebuilding the road system with improved stormwater management systems, expanded landscaping with water-loving plants, and permeable asphalt • Establishing a tenant sustainability committee • Purchasing hybrid and low-emission vehicles for the Yard's fleet • Installing solar-powered trash compactors and exploring use of solar-powered street lamps • Purchasing eco-friendly cleaning products • Installing bicycle racks and lanes • Providing setbacks along perimeter of Yard to enable the first phase of the Brooklyn Waterfront Greenway for bicyclists and pedestrians
5BNY - Perry Avenue Building AKA Building 2590,000 square foot ground up construction completed in 2008LEED Core & Shell Gold CertifiedSustainable features include:Energy efficient building systemsNatural ventilationHigh percentage of recycled and regional materialsCollected rainwater flushes toiletsHigh efficiency and waterless plumbing fixturesMaterials with low VOC contentsOnsite renewable energy generation
6BNY - Perry Avenue Building AKA Building 25Onsite Renewable Energy – 2 SystemsSix unit building mounted wind turbine array, each unit rated at 1KW for a total of a 6KW arrayUnits manufactured and installed by Aerovironment Inc. of Monrovia CA.Mounting structure design by Stantec and installation by local contractorRoof mounted 10KW photovoltaic arrayDesigned, installed, and funded by National Grid under pilot program.
7BNY - Perry Avenue Building AKA Building 25Wind Turbine ArrayAerovironment Inc. Model AVX1000Each unit is 8’-6” tall and 6’-0” wide and weighs 310lbs5 bladesIntegrated bird protection canopy and wiresStart up wind speed 5mphPeak power generation of 1000 Watts at wind speeds of approximately 29mph
8BNY - Perry Avenue Building AKA Building 25Wind Turbine Structural InstallationParametersUnit weight – 310 lbs x 6Design load perpendicular to blades -375lbs with 120mph wind at hubInstallationMount spacing at approx 72” on centerTurbines mounted on W12x79 steel beam above roof levelW12x79 on stub columns affixed directly to building steeland braced back to roof beamsCenter line of W12x79 is 18” off inside face of parapet
9BNY - Perry Avenue Building AKA Building 25Wind Turbine Electrical InstallationSystem FeaturesDC Bus Line Safety Switch Box at roof to electrically brake all turbinesInverter panel in electrical room with DC disconnect, inverter, and AC disconnectData logger
10BNY - Perry Avenue Building AKA Building 25Wind Turbine Environmental and Safety ConcernsUnit Stability and Construction SafetyFull engineering strain testing on blades and other component partsTo date, no noted issues with unit constructionAvian SafetyIntegral bird safety canopy and wiresTo date, no noted instances of bird kills on siteNoiseNoise testing by manufacturer noting that within 15” of units the noise level rarely exceeds 65 db or the volume of normal conversation or a passing car going 50ft away.To date, no noise complaints from tenants or general publicVibrationTo date, no vibration complaints from tenantsIce ThrowTo date, no reported instances of ice throw
12BROOKLYN NAVY YARD PERRY AVENUE BUILDING Building Mounted Wind – A Case Study
13BNY - Perry Avenue Building AKA Building 25LEED CS EACredit 2“Use on-site renewable energy systems to offset building energy cost. Calculate project performance by expressing the energy produced by the renewable systems as a percentage of the building annual energy cost.” USGBC LEED CS V2.01% = 1 pointProjected annual energy cost of building = $126,388.To achieve credit the on-site renewable energy systems must offset at least $1, Using a blended utility rate (gas and electric) of $0.106 kWh the renewable energy systems must generate a minimum of 11,919 kWh per year.AVInc estimates that each turbine is capable of generating approximately 2400 kWh per year for an array total of 14,400 kWh.
14BNY - Perry Avenue Building AKA Building 25Actual Power GenerationAccording to data collected for the week of March 8, 2010 for the preceding 192 days since the system was connected to the inverter and grid, the turbines had generated a total of kWh of electricity.This is far below the target. Prorated for 192 days the system should have produced approximately 6269 kWh in this time frame according to AVInc estimates. The critical issues seem to be the following:For maximum efficiency, wind turbines need to mounted within the area of laminar wind flow, commonly found at 80 to 120 meters above the ground. Turbulence closer to the ground caused by terrain and landscape features, especially in urban areas, disrupts the required flow.The AVInc estimate of peak output (1 KW per turbine) happens at a minimum sustained wind speed of 29 mph. This is an uncommon occurrence in the metropolitan area. In fact the turbines don’t even spin below 5mph. According to data collected in Central Park, NYC wind speeds average between 7.5 and 10.7 mph depending on time of year.
15BNY - Perry Avenue Building AKA Building 25Capital CostsCost of installation for the system including design, materials and labor for the turbines, mounting structure, and electrical components was approximately ????????Operating CostsYearly operating and maintenance costs for the turbine system, including inspection, cleaning, and data tracking is estimated to be $
16Average Retail Price of Electricity to Ultimate Consumers According to the Energy Information Administration the average price of electricity to commercial customers in New York State, thus far in 2010, is cents per KWH.
17BNY - Perry Avenue Building AKA Building 25Payback