Passive House

Transcription

1 Passive House

2 Passive House for Multi-Family and Commercial Buildings PRESENTATION OBJECTIVES Introduction to Passive House Outline the Design Strategies for Passive House Commercial and Multi-residential Case Studies Resources to dig deeper

3 Introduction Mike Kapp, Architect LEED AP BD+C Leadership in Energy & Environmental Design Accredited Professional Specialty in Building Design & Construction CSBA Certified Sustainable Building Advisor CPHC Certified Passive House Consultant

4 Mission: To improve the way people make and use energy every day. Jamie Hager HERS Rater NAHB Certified Green Professional LEED and NGBS Green Verifier Passive House Rater

5 Climate Change

6 OUR CLIMATE IS CHANGING The number of days in which the temperature exceeds 100 F by late this century Recent Past, Lower Emissions Scenario, Higher Emissions Scenario, temperature map images: U.S. Global Change Research Program

7 Wrightsville Beach, NC

8 Wrightsville Beach-2m Sea Level Rise

9 BUILDINGS PLAY A BIG PART BUILDINGS ACCOUNT FOR ALMOST HALF THE CO2 EMMISSIONS energy use and CO2 emissions per capita and by sector

10 HOW BIG? U.S. BUILDINGS ACCOUNT FOR MORE EMISSIONS WORLDWIDE THAN JAPAN, FRANCE & UK COMBINED Reference: Energy Efficiency and Renewable Energy, U.S. Dept. of Energy

11 The Problem We design to Minimum Standards Design Bid Build delivery method We don t use Integrated Project Delivery (IPD) Monitoring If you can t measure it, you can t manage it Separation of funding (Building vs Operation)

12 MUCH WONDERFUL ORGANIC DESIGN IS STILL EXCEEDINGLY WASTEFUL

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14 Passive House Heating/Co oling Energy Savings 75% or more

15 Passive House ROCKET SCIENCE BUILDING SCIENCE!!

16 A SET OF DESIGN PRINCIPLES: PASSIVE HOUSE Defined by a set of principles Continuous insulation, no thermal bridges Air-tight construction Optimized window performance & solar gain Balanced heat recovery ventilation Minimized mechanical system

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28 MINIMIZE LOSS/GAIN: ELIMINATING THERMAL BRIDGES IN LOW LOAD CONSTRUCTION CAN CUT OVERALL BUILDING HEAT LOSS IN HALF

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33 MOISTURE PERFORMANCE: AIR-TIGHTNESS DEFINING THE AIR-TIGHTNESS LAYER: DESIGNING WALL/ROOF/SLAB DETAILS WITH AIR-TIGHTNESS CONSIDERED

34 MINIMIZE LEAKAGE: ENVELOPE PENETRATIONS Minimize penetrations OR combine: example - all plumbing fixtures to one vent or the use of AAV s

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37 Smith House Urbana Illinois, PASSIVE BUILDINGS CASE STUDIES 2015 PHIUS 37

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43 Ben Gates PHNW 2011 conference presentation:

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52 Phased Retrofit Plan of Action Developed Phase 1 (implemented in 2012) Replaced single-pane aluminum windows were replaced with high-performance triple-pane, fiberglass Reduced Energy Usage by 30% e-studies/mark-o-hatfield-buildingcase-study/ With keen attention to detail and good communication, they helped us create a plan for phased energy efficiency improvements that worked with our financial constraints and continuous occupancy. Building Owner, Central City Concern

53 Happy Meadows Courtyard House Newphire Building heated sq ft Final HERS -1 Geothermal Heating and Cooling Heat Pump Water Heater Super Insulated Shell Tight Envelope Crazy good Windows LED Lighting Energy Star Appliances

54 Precast Wall System Continuous insulation R 26.5 Reduced thermal bridging with slab connection R 19 under slab

55 Tight Envelope R 26.5 perimeter slab R 45 walls R 111 ceiling Window U value ACH 50

56 Smart Systems, Integrated Design

57 --5.4 kw Solar System --Regenerative Landscaping --Watersense toilets, faucets and showerheads --Zero VOC finishes --Net Zero Occupants

58 Lessons Learned Air leaks in silly places Get everyone on board early Keep subs informed throughout process It s not just about Energy Hot Water Delivery Indoor Air Quality Net Zero Occupant

59 Visit this home in May! Newphire Building 1 st Weekend May 2-3, 2 nd Weekend May Homes on Tour Homes open 12-5pm

60 PASSIVE BUILDINGS Orenco Station, Portland, OR 2015 PHIUS Orenco Station, Portland, OR The Orchards at Orenco: The largest pre-certified passive building in the United States. This 57-unit affordable housing complex is in Hillsboro, Ore., and is currently under construction. CPHC:Dylan Lamar. 60

61 The Orchards, Portland OR

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64 Bushbury Hill Primary School, UK No Additional Cost to achieve Passivhaus

65 University of Chicago Warren Woods Ecological Field Station First Passive House Certified Lab in North America source:

66 Interserve Office Building, UK $41,000 Savings per year in Energy Cost 13% Reduction in Sick Leave among Staff

67 McKeesport YMCA Sol-Lux Alpha Renovation source: source:

68 PASSIVE BUILDINGS Stellar Apartments, Eugene, OR Kiln Apartments,Portland, Oregon 2015 PHIUS 68

69 PASSIVE BUILDINGS Knickerbocker Project, Brooklyn, NY Uptown Lofts, Pittsburgh, PA 9/realestate/the-passive-house-innew-york-city.html 2015 PHIUS 69

70 PASSIVE BUILDINGS Washington DC Habitat Kansas City 2015 PHIUS 70

71 Resources Passive House Alliance (NC Chapter coming soon!)

72 Resources The Klingenblog Passive House US Blog post from June 30, 2014 featuring multifamily projects Passive House Northwest Chapter: Hammer & Hand leading building and consulting firm for passive house commercial, multi and single family residential; Great videos too! Green Hammer multifamily Passivhausing projects case studies

73 Thank you Jamie Hager Green Building Specialist Southern Energy Management Mike Kapp NCSU Capital Project Management