Passive house slides
John Moynihan Dip Arch, Bach Business, Grad Cert Carbon Management. PH Consultant. PH Trades
Director at Ecolateral P: | M: 0452 458 923 | E: [email protected] | www.ecolateral.com
Passive House (Passivhaus) Buildings: In an Nut Shell GBCA Crosswalk Webinar August 2017 John Moynihan Board Member @ APHA Accredited PH Consultant
1
2
Format of the Presentation:
• Quick Introduction to APHA
• What is a PH Building • Some examples of PH Buildings • Underlying principles • Passive House Planning Package (PHPP) • Summary • Questions
PROMOTE + SUPPORT + RESEARCH www.passivehouseaustralia.org
APHA Structure
Board
Admin Support
Sydney Chapter
Canberra Chapter
Melbourne Chapter
Hobart Chapter
Perth Chapter
Brisbane Chapter
www.passivehouseaustralia.org
What is a Passive House Building?
…”A Passiv Haus is a building in which thermal comfort can be guaranteed solely by heating and cooling of the supply air which is required for sufficient indoor air quality – without using additional recirculated air”
Dr Wolfgang Feist
Basic premise of PH: • Designed to deliver an optimal indoor, energy efficient environment with minimal input from active systems.
• Can be applied to any building type that has a fabric. • Fabric first approach.
Designed to maintain the indoor temperatures at an acceptable comfort level by direct radiated heat with little or no other heat sources.
Designed to maintain the indoor comfort at an acceptable level through a series of mechanical interventions that were significant energy users
Designed to deliver an optimal indoor, energy efficient environment with minimal input from active systems
Certified Passive Buildings across the Globe
60,000 + Certified Passive Houses Completed and in Development in 33 countries
Office - Vienna, Austria
House - Kavarna, Bulgaria
Multi-Residential -Zhejiang, China
Community Center – Paris, France
Primary School – Wolverhampton, UK
Energon Building
Ulm Germany
What do I need to do to design one?
Five key principles
1. High level of continuous insulation
R-value ~ 4m2K/W
Thermographic image of terraced homes well and poorly insulated
Five key principles
1. High level of continuous insulation 2. Air tight construction
.6 ACH @ 50 Pa.
Airtightness Refers to the air movement through cracks and poorly fitting components UK: 10 ach @50Pa
PH: 0.6 ach @50Pa
“The average air change rate in Australia is 15.4 ACH@50Pawhich is slightly higher than the upper range assumed by NATHers software” House Energy Efficiency Inspections Project Ambrose &Syme Dec 2015 . Report for Dept. Industry Innovation and Science.
25
Airtightness Uninterrupted airtight barrier
26
Five key principles
1. High level of continuous insulation 2. Air tight construction 3. Minimal thermal bridges
= < 0.1 W/mK
Thermal Bridge
Studs & nails leave heat through.
28
Thermal-bridges Weak spots in the construction due to geometry or construction changes Maintain a consistent line of insulation
29
High Performance Glazing
And yes, you can still open your windows!
30
Five key principles
1. High level of continuous insulation 2. Air tight construction 3. Minimal thermal bridges 4. High performance glazing
31
Five key principles Cool air in
Cold air in
Warm air out
Efficiency >75% -95%
Warm air in
1. High level of continuous insulation 2. Air tight construction 3. Minimal thermal bridges 4. High performance glazing 5. Mechanical ventilation with heat recovery (MVHR System)
32
Heat Recovery Ventilation Ensure optimum indoor air quality without wasting energy
Paul 450 MVHR System
And remember YES, you can still open your windows!
33
Other Considerations Appliances? Materials? Renewable energy?
Passive House Building in Practise! Passive House Planning Package (PHPP)
35
Passive House Planning Package (PHPP) Design and verification of PHs. • PHPP is used to determine the most appropriate combination of materials and practices for your climate profile. • PHPP is a series of powerful excel sheets that combine to deliver the best result • Used for verification and certification.
Quality Assurance Certified Passive House Designer
Certified Passive House Tradesperson
Certified Passive House Components
Certified Passive Houses
37
Typically 3-8% higher CAPEX, but…return on investment and the qualitative bits that aren’t $$$…
38
How’s it different from current practice for Homes? Typical existing Australian house
1-2 Stars
(NatHERS)
New Australian house design
6 Stars
(NatHERS)
Passive House Construction
8.5-9.5 Stars
(NatHERS)
NatHERS only measures heating and cooling energy, not total energy Passive House Buildings will use up to 80% less energy for heating and cooling
39
With adoption will come change in Australia? Local product suppliers -
windows, insulation, airtightness membranes, heat recovery units, etc
Local expertise - Certified Passive House Designers
Local support - Australian Passive House Association
20 – 30 known projects in development, more uncertified!
Further Information Passive House Institute (PHI)
Research Institute http://www.passivehouse.com
International Passive House Association (iPHA)
Promotion of Passive House worldwide including International Passive House Days and Passive House Stays. http://www.passivehouse-international.org
Australian Passive House Association (APHA)
Promotion, Support and Advance Passive House standard in Australia http://passivehouseaustralia.org/
Passive House Designers
Register of Certified Passive House Designers worldwide http://www.passivhausplaner.eu/englisch/planersuche.php
Great Project Blog
PH1NZ – New Zealand’s first Passive House http://passivehouse1nz.blogspot.com.au/
42
Thank You for listening. QUESTIONS ? Preguntas ?
?
GBCA Crosswalk Webinar August 2017 John Moynihan Board Member @ APHA Accredited PH Consultant
Director at Ecolateral P: | M: 0452 458 923 | E: [email protected] | www.ecolateral.com
Passive House (Passivhaus) Buildings: In an Nut Shell GBCA Crosswalk Webinar August 2017 John Moynihan Board Member @ APHA Accredited PH Consultant
1
2
Format of the Presentation:
• Quick Introduction to APHA
• What is a PH Building • Some examples of PH Buildings • Underlying principles • Passive House Planning Package (PHPP) • Summary • Questions
PROMOTE + SUPPORT + RESEARCH www.passivehouseaustralia.org
APHA Structure
Board
Admin Support
Sydney Chapter
Canberra Chapter
Melbourne Chapter
Hobart Chapter
Perth Chapter
Brisbane Chapter
www.passivehouseaustralia.org
What is a Passive House Building?
…”A Passiv Haus is a building in which thermal comfort can be guaranteed solely by heating and cooling of the supply air which is required for sufficient indoor air quality – without using additional recirculated air”
Dr Wolfgang Feist
Basic premise of PH: • Designed to deliver an optimal indoor, energy efficient environment with minimal input from active systems.
• Can be applied to any building type that has a fabric. • Fabric first approach.
Designed to maintain the indoor temperatures at an acceptable comfort level by direct radiated heat with little or no other heat sources.
Designed to maintain the indoor comfort at an acceptable level through a series of mechanical interventions that were significant energy users
Designed to deliver an optimal indoor, energy efficient environment with minimal input from active systems
Certified Passive Buildings across the Globe
60,000 + Certified Passive Houses Completed and in Development in 33 countries
Office - Vienna, Austria
House - Kavarna, Bulgaria
Multi-Residential -Zhejiang, China
Community Center – Paris, France
Primary School – Wolverhampton, UK
Energon Building
Ulm Germany
What do I need to do to design one?
Five key principles
1. High level of continuous insulation
R-value ~ 4m2K/W
Thermographic image of terraced homes well and poorly insulated
Five key principles
1. High level of continuous insulation 2. Air tight construction
.6 ACH @ 50 Pa.
Airtightness Refers to the air movement through cracks and poorly fitting components UK: 10 ach @50Pa
PH: 0.6 ach @50Pa
“The average air change rate in Australia is 15.4 ACH@50Pawhich is slightly higher than the upper range assumed by NATHers software” House Energy Efficiency Inspections Project Ambrose &Syme Dec 2015 . Report for Dept. Industry Innovation and Science.
25
Airtightness Uninterrupted airtight barrier
26
Five key principles
1. High level of continuous insulation 2. Air tight construction 3. Minimal thermal bridges
= < 0.1 W/mK
Thermal Bridge
Studs & nails leave heat through.
28
Thermal-bridges Weak spots in the construction due to geometry or construction changes Maintain a consistent line of insulation
29
High Performance Glazing
And yes, you can still open your windows!
30
Five key principles
1. High level of continuous insulation 2. Air tight construction 3. Minimal thermal bridges 4. High performance glazing
31
Five key principles Cool air in
Cold air in
Warm air out
Efficiency >75% -95%
Warm air in
1. High level of continuous insulation 2. Air tight construction 3. Minimal thermal bridges 4. High performance glazing 5. Mechanical ventilation with heat recovery (MVHR System)
32
Heat Recovery Ventilation Ensure optimum indoor air quality without wasting energy
Paul 450 MVHR System
And remember YES, you can still open your windows!
33
Other Considerations Appliances? Materials? Renewable energy?
Passive House Building in Practise! Passive House Planning Package (PHPP)
35
Passive House Planning Package (PHPP) Design and verification of PHs. • PHPP is used to determine the most appropriate combination of materials and practices for your climate profile. • PHPP is a series of powerful excel sheets that combine to deliver the best result • Used for verification and certification.
Quality Assurance Certified Passive House Designer
Certified Passive House Tradesperson
Certified Passive House Components
Certified Passive Houses
37
Typically 3-8% higher CAPEX, but…return on investment and the qualitative bits that aren’t $$$…
38
How’s it different from current practice for Homes? Typical existing Australian house
1-2 Stars
(NatHERS)
New Australian house design
6 Stars
(NatHERS)
Passive House Construction
8.5-9.5 Stars
(NatHERS)
NatHERS only measures heating and cooling energy, not total energy Passive House Buildings will use up to 80% less energy for heating and cooling
39
With adoption will come change in Australia? Local product suppliers -
windows, insulation, airtightness membranes, heat recovery units, etc
Local expertise - Certified Passive House Designers
Local support - Australian Passive House Association
20 – 30 known projects in development, more uncertified!
Further Information Passive House Institute (PHI)
Research Institute http://www.passivehouse.com
International Passive House Association (iPHA)
Promotion of Passive House worldwide including International Passive House Days and Passive House Stays. http://www.passivehouse-international.org
Australian Passive House Association (APHA)
Promotion, Support and Advance Passive House standard in Australia http://passivehouseaustralia.org/
Passive House Designers
Register of Certified Passive House Designers worldwide http://www.passivhausplaner.eu/englisch/planersuche.php
Great Project Blog
PH1NZ – New Zealand’s first Passive House http://passivehouse1nz.blogspot.com.au/
42
Thank You for listening. QUESTIONS ? Preguntas ?
?
GBCA Crosswalk Webinar August 2017 John Moynihan Board Member @ APHA Accredited PH Consultant
