From Bauhaus to Passive House www.kenlevenson.us By Ken Levenson A.I.A.
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
From Bauhaus
to
Passive House
www.kenlevenson.us
By Ken Levenson A.I.A.
Efficiency Vermont is a Registered Provider with The American
Institute of Architects Continuing Education Systems (AIA/CES).
Credit(s) earned on completion of this program will be reported to
AIA/CES for AIA members. Certificates of Completion for both AIA
members and non-AIA members are available upon request.
This program is registered with AIA/CES for continuing professional
education. As such, it does not include content that may be deemed
or construed to be an approval or endorsement by the AIA of any
material of construction or any method or manner of handling, using,
distributing, or dealing in any material or product.
Questions related to specific materials, methods, and services will be
addressed at the conclusion of this presentation.
Learning Objectives
At the end of this program, participants will be able to:
Have an introductory understanding of Passive House methodology
Integrate specific strategies of heating, cooling and ventilation systems
Understand the procedure of applying exterior insulation to existing mass
buildings
Understand the design sensitivity potential in such a deep energy efficiency
retrofit
Course Evaluations
In order to maintain high-quality learning experiences, please access
the evaluation for this course by logging into CES Discovery and
clicking on the Course Evaluation link on the left side of the page.
Existing House
Barry Byrne, Architect
Location and Climate
Westport Connecticut
Heating Degree Days 5,660
Site
Existing Building
New Front
New Glass Mud Room?
Existing Plan
New Plan
Zone X
Second Floor Plan
Third Floor Plan
Interiors Push Ahead
Passive House Methodology
1. Optimized thermal enclosure
1a Continuous insulation
1b No thermal bridging
1c Air tightness
1d Windows
2. Optimized passive heat gains
Passive solar
Occupants
Appliances
3. Optimized ventilation
High efficiency ERV
4. Supplemental heating / cooling
Careful not to
oversize
5. Energy efficient systems
Lighting
DHW
Appliances
+
+
+
Secondary
ele
ments
Pri
ma
ry e
lem
en
ts
En
ter
all
into
PH
PP
Measurements
Area Summary
1. Optimize Thermal Enclosure
1. Continuous
Insulation
2. Eliminate Thermal
Bridges
3. Continuous Air
Barrier
Larsen Trusses?
Foamglas
Foamglas
Sto Limestone
Acrylic Finish
Roof Insulation
1st Floor Insulation
THERM U Value = .0421
Thermal Bridge Free Construction
PHPP 2
PH
PP
1
THERM
CALCULATION
1. Eliminate, Reduce, Account
2. BRIDGE = THERM CALC – PHPP 1 – PHPP 2
TYPICAL WALL INTERSECTION
PHPP Double Counts Intersections
Thermal Bridging at Roof / Wall C
MU
Foamglas
Polyiso
Foam
gla
s
Con
cre
te
Cellulose
Thermal Bridging at Floor / Wall
Crawl Space
Grade Foam
gla
s
Concre
te
Cellulose
Over Insulate Window Frames
From Hasper Presentation, Future Oriented Refurbishment, iPHA
INSULATION
CONCRETE
WINDOW
FRAME
Air Tightness Components:
Foamglas
Sto Gold Coat
Window Tape
Drywall
PHPP verification check
“THERMOS”
2. Optimize Passive Heat Gains
• Windows
• Appliances
• Lighting
• People
Windows for Comfort
From Feist Presentation, Perspectives of Future Passive House Technology
Windows as Heating System
Window Energy Balance
Shading
Appliances
Lighting
People Contribute 20% of heating requirement. 10% at peak demand.
PHPP verification check With insulation, air tightness
and windows.
NO VENTILATION YET
3. Optimize Ventilation
1
3
4
5
2
Ventilation Zehnder 550 ERV System
with 3 Typical Settings
ERV
Home Run Ducts
(10 in & 10 out)
Manifolds
From Feist Presentation, Perspectives of Future Passive House Technology
From Feist Presentation, Perspectives of Future Passive House Technology
PHPP verification check 1. Optimized Thermal Enclosure
+
2. Optimized Passive Heat Gains
+
3. Optimized Ventilation
=
House in Balance
Secondary Elements
4. Supplemental Heating/Cooling
5. Efficient Systems
Peak Heating Calculations 1 2
Heating System
Hydronic heat coil @ ventilation air
Hydronic radiant floor at Master Bath & Family Rm
(5) Schuco Slim IV Flat Plate Solar Thermal Panels
115 Gallon Schuco Hot Water Tank
Solar supplying 80% of need.
ERV
Heating Components
HYDRONIC
COIL
ABANDONED
FIREPLACE
Cooling System High Thermal Mass + ERV Humidity Control + Shading = 1 Ton of AC
(1) 2 Ton AC Condenser
(2) 1 Ton Air Handlers
NO DUCTS
6. Efficient Systems
Solar Domestic Hot Water System Lighting –
Compact Fluorescent & LED
Appliances –
Liebherr Fridg etc…
Clothes Dryer –
Electric Ventless Condensing
Minimize Run Lengths.
Insulate All Water Piping.
Required to Ensure Low
Primary Energy Demand
Final PHPP verification check
Epilogue
“Why add the extra inch of insulation?”
1. “Simply combining appropriate components is
not sufficient to construct a building as a
Passive House – the integration as a whole is
greater than the sum of the individual parts.” – from PHPP 2007 Introduction
2. Recommended insulation and air tightness
levels ensure thermal and air quality
stabilization.
3. Stabilization means: No drafts. No stratification.
No condensation. No polluted air.
4. Thermal and air quality stabilization at a very
low energy consumption requirement effectively
eliminates occupant variation.
Answer:
From Feist Presentation, PH from Pilot to Mainstream in Germany
To be continued…
Thank you.
Related Documents
