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The Greening of Historic Preservation: Keeping the “Green” in Our Pockets. Presented by: Ryan Merkin Steven Winter Associates. IPED National Historic Tax Credit Conference November 8, 2007 Washington, DC. Steven Winter Associates,Inc. Building Systems Consultants - Founded 1972

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the greening of historic preservation keeping the green in our pockets

The Greening of Historic Preservation:Keeping the “Green” in Our Pockets

Presented by:

Ryan Merkin

Steven Winter Associates

IPED National Historic Tax Credit Conference

November 8, 2007

Washington, DC

steven winter associates inc
Steven Winter Associates,Inc.
  • Building Systems Consultants - Founded 1972
  • Expertise:
  • Energy Efficiency
  • Historic Preservation
  • Advanced Building Systems
  • Indoor Environmental Quality (IEQ)
  • Systems Engineering and Optimization
  • Accessibility and ADA Compliance
  • Integrated “Whole Building” Approach
steven winter associates inc1
Steven Winter Associates,Inc.
  • Historic Design Charrettes & Strategic Planning
  • Malden Mills: Lawrence, MA
  • 800,000 SF vacant space in 10 mill buildings
  • Redevelopment 500 units mixed-income housing, renovations utilizing historic tax credits
  • Seeking LEED for Homes Certification
  • American Locomotive Works: Providence, RI
  • 18.5 acre site combination mill buildings and new construction
  • Seeking LEED ND & LEED for Homes Certifications
range of energy usage in buildings
Range of Energy Usage in Buildings

All listed in

Btu/ft2/HDD

Low

Income

Multi-

Family

NYS

1996

Single

Family

USA

Low

Income

Single

Family

NYS

Selected

New

Afford.

Rehabs

NYC

1996

Middle

Income

Multi-

Family

NYS

2006

Melrose

Commons

2002

what does this mean in energy costs
What does this mean in energy costs?

Gas Cost

Assumes

$1.85/therm

bank buildings fuel costs per room 2006

Fuel Cost/Room ($)

Gas

Oil

Dual

Bank Buildings - Fuel Costs per Room 2006

Total Buildings 319

< $200 50

$200-$249 113

$250-$299 63

$300-$399 59

$400-$499 25

$500-$599 2

$600-$699 3

$700-$799 4

urban horizons nyc recommendations
Urban Horizons NYC: Recommendations

$150,000 Energy Cost Savings<5 Year Payback Water Saving Devices New Toilets Lighting Retrofit Refrigerators Airsealing Ventilation System New Heat and DHW Systems Combined Heat & Power

high performance building design strategies
High Performance Building Design Strategies
  • Design and build a better building envelope
  • Build tight, ventilate right
  • Size the HVAC to the building load (math required)
  • Reduce avenues for water penetration
  • Specify high efficiency HVAC, appliances, & lighting
  • Specify materials with fewer pollutants
  • Reduce water usage in buildings
  • No unproven technologies, gadgets, or high costs
why do we miss all of this stuff
Why Do We Miss All of This Stuff?
  • Few pre-design team meetings, if any
  • Engineers and architects not talking
  • Consultants who don’t focus on the building first
  • Neglecting to bring management and maintenance staff into design meetings
  • Lack of pre-CD energy modeling
most common missed details in drawings specs
Most Common Missed Details in Drawings/Specs
  • Airsealing (firestopping?)
  • Sealing and flashing of penetrations
  • Inspecting of insulation prior to sheetrock
  • Duct sealing and balancing
  • Sizing of HVAC equipment to load
  • Water use devices (aerators, showerheads, toilets)
oh yeah hvac system selection
Oh, yeah, HVAC system selection……..

Who was

it that thought

air source

heat pumps

were a good

idea in

Boston?

historic case study cambridge ma
Historic Case Study: Cambridge, MA

Domestic Hot Water

Thermal efficiency <65%

Retrofit high efficiency combined heating and hot water heating system and reduce hot water temperature to 120ºF

Water

Showerheads, faucet aerators, toilets

Ventilation

Move thermostatic controls

Test and balance system

Windows

$1,100 per window replacement not cost-effective

historic case study richmond va
Historic Case Study: Richmond, VA

Lighting

24 Hour Stairwell Lighting

Utilize daylighting or install bilvelel dimming fixtures

Track Lighting in Offices

100W Halogen Lamps replace with 23W CFL

Occupancy sensors in lounge, meter rooms, refuse closets, restrooms.

Photosensors for outdoor lighting

Health & Safety

Bulk purchase of green cleaning products

CO detectors in apartments

historic case study philadelphia pa
Historic Case Study: Philadelphia, PA
  • LED Lighting
  • Lobby and Leasing Offices
  • 100 Halogen Track Fixtures
  • 50W per Lamp
  • Rated 3,000 Hours
  • At $0.12/kWh = $5,250
  • Retrofit
  • 3W or 6W LED
  • Rated 25-50,000 Hours
  • At $0.12/kWh = $315 - $630
  • At $35/lamp, payback < 1 yr
  • Not to mention, maintenance costs and cooling load reduction…