steven winter associates, inc building systems consultants the greening of historic preservation:...

Steven Winter Associates, IncBuilding Systems Consultants

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

Presented by:

Ryan MerkinSteven Winter Associates

IPED National Historic Tax Credit Conference November 8, 2007

Washington, DC

Steven Winter Associates, IncBuilding Systems Consultants

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, IncBuilding Systems Consultants

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

Steven Winter Associates, IncBuilding Systems Consultants

Energy Costs in Historic Preservation:

How Much our Buildings Use and Why

Steven Winter Associates, IncBuilding Systems Consultants

Range of Energy Usage in Buildings

0

5

10

15

20

25

30

35

40

Heat

Hot Water

All listed in Btu/ft2/HDD

SingleFamilyUSA

LowIncomeSingle FamilyNYS

LowIncomeMulti- FamilyNYS1996

SelectedNew

Afford. Rehabs

NYC1996

MiddleIncomeMulti- FamilyNYS2006

MelroseCommons

2002

Steven Winter Associates, IncBuilding Systems Consultants

A Top 10 Owner of NYC Properties:Multifamily Energy Usage

0

5

10

15

20

25

30

35

40

45

50

1

Steven Winter Associates, IncBuilding Systems Consultants

What does this mean in energy costs?

0

1

2

3

4

5

6

7

8

$/ ft$/ Year

Gas CostAssumes

$1.85/therm

Steven Winter Associates, IncBuilding Systems Consultants

Fuel Cost/Room ($)

GasOilDual

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

Bank Buildings - Fuel Costs per Room 2006

Steven Winter Associates, IncBuilding Systems Consultants

What if we Miscalculate?

Steven Winter Associates, IncBuilding Systems Consultants

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

Steven Winter Associates, IncBuilding Systems Consultants

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

Steven Winter Associates, IncBuilding Systems Consultants

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

Steven Winter Associates, IncBuilding Systems Consultants

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)

Steven Winter Associates, IncBuilding Systems Consultants

Oh, yeah, HVAC system selection……..

Who was it that thoughtair sourceheat pumpswere a goodidea inBoston?

Steven Winter Associates, IncBuilding Systems Consultants

Historic Case Study: Cambridge, MA

Domestic Hot WaterThermal efficiency <65%Retrofit high efficiency combined heating and hot water heating system and reduce hot water temperature to 120ºF

WaterShowerheads, faucet aerators, toilets

VentilationMove thermostatic controlsTest and balance system

Windows$1,100 per window replacement not cost-effective

Steven Winter Associates, IncBuilding Systems Consultants

Historic Case Study: Richmond, VA

Lighting24 Hour Stairwell LightingUtilize daylighting or install bilvelel dimming fixtures

Track Lighting in Offices100W Halogen Lamps replace with 23W CFL

Occupancy sensors in lounge, meter rooms, refuse closets, restrooms.Photosensors for outdoor lighting

Health & SafetyBulk purchase of green cleaning productsCO detectors in apartments

Steven Winter Associates, IncBuilding Systems Consultants

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…

Steven Winter Associates, IncBuilding Systems Consultants

Thank You.

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