Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

MinnePHit House Case Study

152 views

Published on

I gave this talk as part of the 2017 Energy Design Conference in Duluth, MN. It showcases Passive House retrofitting using the EnerPHit standard.

Published in: Design
  • Be the first to comment

MinnePHit House Case Study

  1. 1. Residential Passive House Retrofit (EnerPHit) The MinnePHit House Case Study about the first cold-climate EnerPHit project in the World Tim Eian, Dipl.-Ing., Certified Passive House Planner & Consultant
  2. 2. Learning Objectives • The Passive House building energy standards • Residential Passive House retrofit design • Strategies, materials and systems • Challenges & Opportunities • Certification
  3. 3. Introduction
  4. 4. Photos: Corey Gaffer The MinnePHit House Minneapolis, MN
  5. 5. before
  6. 6. after
  7. 7. Photos: Corey Gaffer
  8. 8. Photos: Corey Gaffer
  9. 9. Minneapolis + EnerPHit = MinnePHit
  10. 10. The Passive House Standard
  11. 11. Passivhaus - Passive House “A rigorous, voluntary building energy standard focusing on highest energy efficiency and quality of life at low operating cost.”
  12. 12. Passive House in 90 Seconds Video: Hans-Jörn Eich
  13. 13. Think globally, build locally. Global Standard
  14. 14. Global Adoption
  15. 15. Third-Party Certified
  16. 16. Tool
  17. 17. The Path to Ultimate Sustainability
  18. 18. Global Climate Specificity
  19. 19. Climate-Specific Requirements
  20. 20. Energy Modeling
  21. 21. Conservation first ➡ Minimize losses ➡ Maximize (free) gains Basic Concept
  22. 22. Active vs. Passive Passive: 4.75 kBtu/(sf yr)Active: 25-125 kBtu/(sf yr) 85 - 450 kWh/(m2 a), typically found in the U.S. 15kWh/(m2 a), maximum target Source: Krapmeier & Drössler 2001
  23. 23. Energy Footprint Heating (active) Hot water (active) Cooling (active) Household Electricity Heat & hot water (passive) ➡ up to 95% less heating energy ➡ 50 to 75% less total energy Code Passive House
  24. 24. Energy per Square Foot and Year Gas mileage for buildings. Metrics
  25. 25. ≤ 4.75 kBtu/(sf yr) ≤ 15kWh/(m2 a) Total energy used to heat or cool a building. Space Conditioning Energy Targets ≤ 7.9 kBtu/(sf yr) ≤ 25kWh/(m2 a) ≤ 9.5 kBtu/(sf yr) ≤ 30kWh/(m2 a)
  26. 26. ≤ 38 kBtu/(sf yr) ≤ 120kWh/(m2 a) Total energy used to heat or cool a building. Source Energy Targets varies ≤ 120 kWh/(m2 a) + ((QH - 15 kWh/(m2 a)) * 1.2)
  27. 27. ≤ 3.17 Btu/(h sf) ≤ 10W/m2 Heating energy can be supplied through ventilation system. Heating Load Target (suggested)
  28. 28. ≤0.6 ACH50 Measured with a blower door in the field. Airtightness Targets ≤1.0 ACH50
  29. 29. EnerPHit offers a Component Track. Component Targets • Maximum U-values • Minimum R-values • SHGC requirements • Minimum heat-recovery rates
  30. 30. Component Targets
  31. 31. Predictable Outcome & Measurable Results Passive House Planning Package - PHPP
  32. 32. Key Benefits
  33. 33. Highest Comfort
  34. 34. Superior Indoor Environmental Quality
  35. 35. Image Source: dreamstime.com Ecology and Resource Efficiency
  36. 36. Image Source: dreamstime.com Cheapest Life Cycle Cost
  37. 37. The MinnePHit Project
  38. 38. Where are we?
  39. 39. Image Source: carlustblog.org what we got
  40. 40. 1935
  41. 41. • 2 stories + basement • 1,200 finished SF • 2 bedrooms • 1 bath • 5 people
  42. 42. Prior Airport Noise Retrofit
  43. 43. Windows with Storms
  44. 44. Mechanicals
  45. 45. Airtightness Initial Test 8.5 ACH50 [2,100 CFM50]
  46. 46. Pre-Existing Conditions
  47. 47. • Structure ✓ • Weather Barrier? • Insulation ✗ • Airtightness ✗ • Moisture Management ✓ • Ventilation/ Air Quality ✗ • Comfort ✗ ✗ • Daylight ✗ • Durability (30 years?) • Design (Sign of the Times) So, Where Are We?
  48. 48. Where do we go?
  49. 49. Image Source: Wikipedia what we need
  50. 50. • + 3 Bedrooms • + 2 Baths • + Mudroom • Better kitchen • Better living areas • Homeschool room • Safe stairs • Weather-tight envelope • Durable structure • Healthy interiors • Comfort & daylight • Low operating cost • Energy performance The List
  51. 51. Passive House Institute Dr. Wolfgang Feist Rheinstraße 44/46 64283 Darmstadt Germany www.passivehouse.com EnerPHit and EnerPHit+i Certification Criteria for Energy Retrofits with Passive House Components If an energy retrofit of an existing building meets Passive House criteria (for new builds), it, too, can be certified as a Certified Passive House. It is, however, often difficult to feasibly achieve the Passive House Standard in older buildings for a variety of reasons. Passive House technology for relevant building components in such buildings does, nevertheless, lead to considerable improvements with respect to thermal comfort, structural longevity, cost-effectiveness over the building lifecycle and energy use. Buildings that have been retrofitted with Passive House components and, to a great extent, with exterior wall insulation can achieve EnerPHit certification as evidence of both building quality and fulfilment of specific energy values. The EnerPHit+i designation is applied if more than 25 % of the opaque exterior wall surface has interior insulation.
  52. 52. How do we get there?
  53. 53. Holistic Energy Reduction Retrofit ≠ Weatherization
  54. 54. Sports car?
  55. 55. • Set goals for performance and design • Overlay architectural program • Make the home safe for people (code compliance) • Control temperature, air, and moisture • Add ventilation • Make the envelope air- and weather-tight • Add continuous insulation to meet the energy goals • Assess moisture transfer through shell • Implement robust climate zone-appropriate assemblies • Reduce energy demand by 2/3 and air-leakage 10X to meet Passive House retrofit standard (EnerPHit) The Plan for Success
  56. 56. The Concept
  57. 57. REPLACE GLASS BLOCK W/ EGRESS WNDWS DEMO GLASS BLOCK & FILL TO MATCH FND. WALL PERIMETER OF STRUCTURE ABOVE CHIMNEY ABOVE DEMO STAIR DEMO AND REPLACE LOAD BEARING WALL & FOUNDATION TEMP. BRACE FLOOR UP 2x10s @ 16" O.C. 2x10s @ 16" O.C. UNEXCAVATED DEMO FLOOR SLAB & EXCAVATE FOR NEW ASSEMBLY LAUNDRY ROOM WORKOUT ROOM BATH - DEMO & SALVAGE FIXTURES Basement
  58. 58. 1. Homeschool Room 2. Mechanical 3. Unexcavated 3 1 2 3 UP Basement
  59. 59. REPLACE GLASS BLOCK W/ EGRESS WNDWS DEMO GLASS BLOCK & FILL TO MATCH FND. WALL PERIMETER OF STRUCTURE ABOVE CHIMNEY ABOVE DEMO STAIR DEMO AND REPLACE LOAD BEARING WALL & FOUNDATION TEMP. BRACE FLOOR UP 2x10s @ 16" O.C. 2x10s @ 16" O.C. UNEXCAVATED DEMO FLOOR SLAB & EXCAVATE FOR NEW ASSEMBLY LAUNDRY ROOM WORKOUT ROOM BATH - DEMO & SALVAGE FIXTURES UP 1. Retrofit 2. Reconstruction 3. Addition Basement
  60. 60. SOFFIT BRICK CHIMNEY, SEAL AIRTIGHT DEMO EXIST. SOFFIT REMOVE AND SALVAGE WNDWS, TYP. REMOVE AND SALVAGE DOORS AS INDICATED DEMO LANDING DEMO STAIRS, UP AND DOWN UP DN DN DN DN 2x10s V.I.F. 2x10s V.I.F. 2x V.I.F. LIVING ROOM KITCHEN - DEMO ALL BUILT-INS - DEMO & SALVAGE EQUIPMENT DINING ROOM KID'S ROOM ENTRY VEST. DEMO FLOOR SYSTEM ABOVE SLAB DEMO FLOOR SYSTEM ABOVE SLAB First Floor
  61. 61. REF D W 1. Entry 2. Powder room 3. Mud room/ laundry 4. Living room 5. Kitchen 6. Dining area 7. Family area 8. Covered entry 9. Rear entry 10.Patio 1 2 3 4 5 7 8 9 10 6 First Floor
  62. 62. SOFFIT BRICK CHIMNEY, SEAL AIRTIGHT DEMO EXIST. SOFFIT REMOVE AND SALVAGE WNDWS, TYP. REMOVE AND SALVAGE DOORS AS INDICATED DEMO LANDING DEMO STAIRS, UP AND DOWN UP DN DN DN DN 2x10s V.I.F. 2x10s V.I.F. 2x V.I.F. LIVING ROOM KITCHEN - DEMO ALL BUILT-INS - DEMO & SALVAGE EQUIPMENT DINING ROOM KID'S ROOM ENTRY VEST. DEMO FLOOR SYSTEM ABOVE SLAB DEMO FLOOR SYSTEM ABOVE SLAB 1. Retrofit 2. Reconstruction 3. Addition REF D W First Floor
  63. 63. BRICK CHIMNEY DEMO STAIR & LANDINGS DEMO BALCONY REMOVE AND SALVAGE WNDWS, TYP. REMOVE AND SALVAGE DOORS AS INDICATED DN DN DN DN MASTER BEDROOM BEDROOM BATH - DEMO & SALVAGE FIXTURES OFFICE DEMO ROOF SYSTEM ABOVE ENTRY Second Floor
  64. 64. 1. Bedroom 1 2. Bedroom 2 3. Master Bedroom 4. Master Closet. 5. Master Bath 6. Bedroom 3 7. Kid’s Bath 8. Toilet Room 1 7 8 2 36 5 4 Second Floor
  65. 65. BRICK CHIMNEY DEMO STAIR & LANDINGS DEMO BALCONY REMOVE AND SALVAGE WNDWS, TYP. REMOVE AND SALVAGE DOORS AS INDICATED DN DN DN DN MASTER BEDROOM BEDROOM BATH - DEMO & SALVAGE FIXTURES OFFICE DEMO ROOF SYSTEM ABOVE ENTRY 1. Retrofit 2. Reconstruction 3. Addition Second Floor
  66. 66. PASSIVE
SOLAR HEAT
GAINS(WINTER) SOLAR SHADING (SUMMER) HEAT-RECOVERY VENTILATION
& SMALL
HEATER AIR-INTAKE EXHAUST LARGE
"ACTIVE" MECHANICAL
SYSTEM -
FURNACE
OR
BOILER EXISTING
CONDITION -
INSUFFICIENT
INSULATION -
LOW-PERFORMANCE 

WINDOWS
AND
DOORS -
AIR
LEAKAGE -
NO
VENTILATION EXTRACT
AIR SUPPLY
AIR INTERNAL HEAT
GAINS -
PEOPLE -
EQUIPMT. RETROFIT
CONDITION -
WATER
PROOFING 

AND
MANAGEMENT -
ADDED
INSULATION -
MITIGATION
OF 

THERMAL
BRIDGES EXISTING
CONDITION -
NO
WATER
PROOFING 

AND
MANAGEMENT -
NO
INSULATION
AT
AND 

BELOW
GRADE -
THERMAL
BRIDGES TYPICAL
EXISTING
BUILDING
(BEFORE)DEEP
ENERGY
REDUCTION
RETROFIT
(AFTER) OPTIONAL
SOLAR
THERMAL OR
SOLAR
PHOTOVOLTAIC RETROFIT
CONDITION -
ADVANCED
WINDOWS 

AND
DOORS -
AIR-TIGHTNESS
LAYER -
CONTINUOUS
INSULATION 

PACKAGE Retrofit Concept
  67. 67. PASSIVE
SOLAR HEAT
GAINS(WINTER) SOLAR SHADING (SUMMER) HEAT-RECOVERY VENTILATION
& SMALL
HEATER AIR-INTAKE EXHAUST LARGE
"ACTIVE" MECHANICAL
SYSTEM -
FURNACE
OR
BOILER EXISTING
CONDITION -
INSUFFICIENT
INSULATION -
LOW-PERFORMANCE 

WINDOWS
AND
DOORS -
AIR
LEAKAGE -
NO
VENTILATION EXTRACT
AIR SUPPLY
AIR INTERNAL HEAT
GAINS -
PEOPLE -
EQUIPMT. RETROFIT
CONDITION -
WATER
PROOFING 

AND
MANAGEMENT -
ADDED
INSULATION -
MITIGATION
OF 

THERMAL
BRIDGES EXISTING
CONDITION -
NO
WATER
PROOFING 

AND
MANAGEMENT -
NO
INSULATION
AT
AND 

BELOW
GRADE -
THERMAL
BRIDGES TYPICAL
EXISTING
BUILDING
(BEFORE)DEEP
ENERGY
REDUCTION
RETROFIT
(AFTER) OPTIONAL
SOLAR
THERMAL OR
SOLAR
PHOTOVOLTAIC RETROFIT
CONDITION -
ADVANCED
WINDOWS 

AND
DOORS -
AIR-TIGHTNESS
LAYER -
CONTINUOUS
INSULATION 

PACKAGE Retrofit Concept
  68. 68. EXIST.WALL RETROFITWALL 20" 10 3/4" 51/2" ±91/4" 11/2" 91/4"7" 24" +1'-8" 0'-0" -0'-3" +0'-0 1/2" EXIST. ROOF FRAMING TO BE DEMO'D SNOW GUARDS PER MANUF. INSECT SCREEN VENT CHUTES GUTTER MAINTAIN CONT. AIR BARRIER W/ SIGA BRAND TAPE AT SHEATHING TO TOP PLATE MAINTAIN CONT. AIR BARRIER W/ SIGA BRAND TAPE AT SHEATHING TO TOP PLATE CONT. VENTING BACKFILL TYPICAL ABOVE GRADE RETROFIT (R-44) ASSUMED EXISTING WALL ASSEMBLY INTERIOR • PLASTER • WALLBOARD • 2X4 FRAMING, DENSE-PACK WITH CELLULOSE INSULATION (ADDED) 3.5 LBS/ CU FT • EXTERIOR SHEATHING RETROFIT WALL ASSEMBLY • 5/8" OSB SHEATHING: SEAL JOINTS AIRTIGHT VAPOR BARRIER, AIRTIGHTNESS LAYER • 9-1/2" I-JOIST FURR FRAMING @ EXIST. STUDS WITH DENSE-PACK CELLULOSE INSULATION, 3.5 LBS/ CU FT • 1/2" FIBERBOARD SHEATHING (BILDRITE OR SIM.) • WINDWASH BARRIER WEATHER RESISTANT BARRIER • 3/4" VENT SPACE (1X FRAMING) • CEMENT BOARD LAP SIDING EXTERIOR TYPICAL BELOW GRADE RETROFIT (R-40) INTERIOR • 5/8" WALL BOARD • 3-1/2" STEEL FRAMING @ 24" O.C. WITH MIN. 2" CLOSED CELL SPRAY FOAM INSULATION VAPOR BARRIER & AIRTIGHTNESS LAYER • EXIST. CONCRETE WALL • (2) 3" EXTERIOR GRADE EPS INSULATION (EIFS) • STO FLEXYL (EIFS) WEATHER RESISTANT BARRIER & FINISH (TIE TO FACE OF FOOTING) EXTERIOR TYPICAL SLAB RETROFIT (R-25) NOTE: REMOVE EXISTING SLAB & EXCAVATE TO ACCOMODATE RETROFIT ASSEMBLY INTERIOR • 4" CONCRETE SLAB WITH RADIANT IN-FLOOR HEATING SYSTEM • 6-MIL POLY VAPOR BARRIER & AIRTIGHTNESS LAYER SEAL AIRTIGHT AT ALL JOINTS AND PROTRUSIONS • 6" BELOW GRADE EPS INSULATION BOARD, COMPRESSIVE STRENGTH PER SE • MIN. 2" GRAVEL EXTERIOR TYPICAL VENTED COLD ROOF ASSEMBLY (R-77) NOTE: REMOVE EXISTING ROOF STRUCTURE, BUILD PERIMETER KNEE WALL AND SET NEW TRUSSED HIP ROOF PER STRUCTURAL DRAWINGS EXTERIOR • STANDING SEAM METAL ROOFING @ 16" O.C. • GRACE ICE & WATER SHIELD HT ROOFING UNDERLAYMENT, WEATHER RESISTANT BARRIER • 3/4" PLYWOOD STRUCTURAL SHEATHING • ATTIC AIRSPACE, OR VENT CHUTES • STRUC. TRUSSES @ 24" O.C. WITH MIN. 20" CELLULOSE INSULATION • 5/8" OSB SHEATHING, SEAL JOINTS AIRTIGHT VAPOR BARRIER, AIRTIGHTNESS LAYER • 6" INSTALLATION CAVITY WITH SUSPENSION SYSTEM • 5/8" WALLBOARD CEILING INTERIOR WEATHER RESISTANT BARRIER (WRB) AIRTIGHTNESS LAYER & VAPOR RETARDER (AB & VR) RETROFIT FRAMING EXIST. WALL TRUSSBEARING 2 10 T.O. KNEEWALL T.O. EXISTING WALL T.O. EXISTING R.O. T.O. ADDITION R.O.s CLEAR @OUTSIDEOFSTUDWALL 7-1/2" TRIM TYPICAL ABOVE GRADE WALL RETROFIT (R-44) INTERIOR • EXISTING WALLBOARD & FINISH • EXISTING FRAMING WITH 3-1/2" DENSE PACK INSULATION, 3.5 LBS/ CU FT • EXISTING SHEATHING • 5/8" OSB SHEATHING: SEAL JOINTS AIRTIGHT VAPOR BARRIER, AIRTIGHTNESS LAYER • 9-1/2" I-JOIST FURR FRAMING @ 24 O.C. WITH DENSE-PACK CELLULOSE INSULATION, 3.5 LBS/ CU FT • 1/2" BUILDRITE SHEATHING • WINDWASH BARRIER WEATHER RESISTANT BARRIER • 3/4" VENT SPACE (1X FRAMING) • CEMENT BOARD LAP SIDING EXTERIOR CONTINUOUS 5/8" SHEATHING CONNECTS EXISTING AND NEW CONSTRUCTION VAPOR BARRIER & AIRTIGHTNESS LAYER • Walls a/ grade: R-10 to R-44 • Walls b/ grade: R-1 to R-30+ • Roof: R-20 to R-77 • Slab: R-1 to R-25 Assemblies
  69. 69. 4" 4"51/2" ROUGH OPENING WINDOW SET POINT OPT. 2X4 L-SECTION SILL END CAP EXTERIOR ALUMINUM SILL INTERIOR WOOD SILL EPS FOAM STRIP PLYWOOD STRIP FILL VOID WITH EPS FOAM 8 7/8" (225 MM) 4" 5 1/2" ROUGHOPENINGROUGHOPENING EPS WEDGE EPS INFILL AIRTIGHT CONNECTION AIRTIGHT CONNECTION COMPRESSION TAPE DRIP EDGE OPT. 2X4 L-SECTION END CAP 3-1/2" TRIM 5-1/2"TRIM 7-1/4" TRIM DC260 7" (180 MM) ROUGHOPENING AIRTIGHT CONNECTION TERRACE DOOR SILL L-SECTION END CAP COMPRESSION TAPE CRIPPLE WALL WITH DENSEGLASS GOLD SHEATHING INT.JAMB EXTENSION EXT.JAMB EXT. STEP MIN.1-3/8" 1 3/4" EXIST. ROUGH OPENING WINDOW SET POINT 1" POLYISOCYANURATE FOAM BOARD 3/4" PLYWOOD BUCK STO GUARD WET-FLASHING SYSTEM STO FINISH PROFILE AIR TIGHT CONNECTION DOUBLE SIDED BUTYL TAPE PER MANF. RETROFIT ROUGH OPENING REFERENCE DETAILS: - STO W 425-1 - STO W 501 NOTE: VERIFY DIMENSIONS WITH ACTUAL PRODUCT INTERIOR EXTERIOR 8 7/8" (225 MM) 13/4"3/4" STO FINISH PROFILE STO DRIP EDGE WINDOW R.O. BLOCK R.O. EXIST. R.O. WINDOW R.O. U-SECTION END CAP REFERENCE DETAILS: - STO W 710 - STO W 425-2 SCALE: 3" = 1'-0"3 TYPICAL WINDOW JAMB SCALE: 3" = 1'-0"2 TYPICAL WINDOW HEAD & SILL SCALE: 3" = 1'-0"1 TYPICAL EXTERIOR WINDOW ELEVATION SCALE: 3" = 1'-0"4 TYP. TERRACE DOOR SILL SCALE: 3" = 1'-0"6 TYPICAL WINDOW JAMB, BASEMENT SCALE: 3" = 1'-0"5 TYPICAL WINDOW HEAD & SILL, BASEMENT WEATHER RESISTANT BARRIER (WRB) AIRTIGHTNESS LAYER & VAPOR RETARDER (AB & VR) Details
  70. 70. • Boiler (existing, replaced) • In-floor heat (existing, reused and expanded) • Ventilation system (new) • Domestic hot water system (new plumbing) MEP Systems
  71. 71. Construction Project
  72. 72. Rough-In Test 0.87 ACH50 [267 CFM50]≤1.0 Airtightness
  73. 73. Whole House Heat RecoveryVentilation
  74. 74. Insulated Tubes
  75. 75. Home-Run Distribution with Tubes
  76. 76. Installation/Service Cavities
  77. 77. Registers: Plug & Play
  78. 78. Heat Source: On-Demand Boiler (existing)
  79. 79. Unique Feature:Water Tree
  80. 80. Minisplit AC
  81. 81. The Result
  82. 82. Photos: Spaces Magazine
  83. 83. Photos: Spaces MagazinePhotos: Spaces Magazine
  84. 84. Photos: Spaces Magazine
  85. 85. Photos: Spaces Magazine
  86. 86. Photos: Spaces Magazine
  87. 87. Photos: Spaces Magazine
  88. 88. Photos: Spaces Magazine
  89. 89. Photos: Spaces Magazine
  90. 90. Photos: Spaces Magazine
  91. 91. Photos: Spaces Magazine
  92. 92. Certified Performance
  93. 93. Final Test 0.65 ACH50 [195 CFM50]≤1.0 Airtightness
  94. 94. Specific Primary Energy Demand 112 kWh/m2 a [35.5 kBTU/ft² a] Component Approach Minimum R-values throughout Heating Load 20 W/m2 [6.3 Btu/h/ft²] 4.1 kW [14 kBtu/h] ≤130QP ≤ 120 kWh/m2a + ((QH - 15 kWh/(m2a)) * 1.2) Airtightness 0.65 ACH50 [196 CFM50] ≤1.0 Cooling Load 2.6 kW [0.74 tons, 8.8 kBtu/h] Passive House Performance
  95. 95. Heat loss is dramatically reduced by more than 66% over current new construction in Minnesota. Passive House Comparison
  96. 96. Annual energy intensity was calculated at 16.5 kBTU/(sf yr). This is a savings of 64% compared to a similarly-sized house meeting MN 2015 residential energy code—modeled at 45.7 kBTU/(sf yr). Passive House Comparison
  97. 97. Passive House Certification
  98. 98. • Structure ✓ • Weather Barrier ✓ • Insulation ✓ • Airtightness ✓ • Moisture Management ✓ • Ventilation/ Air Quality ✓ • Comfort ✓ • Daylight ✓ • Durability (50-100 years) ✓ • Design ✓ • Lifecycle Cost ✓ • Environmental Impact ✓ • Deconstructability ✓ HOLISTIC DESIGN } Mission Accomplished!
  99. 99. Resources passivehouse.com passipedia.org passivehouse-international.org
  100. 100. Thank you! testudio.com

×