Design specifications for the Future Creating a masterpiece

Transcription

1 PRES/42 Design specifications for the Future Creating a masterpiece Verney Ryan Beacon Pathway Inc

2 Source: World Green Building Council

3 Source: World Green Building Council as quoted by NZGBC

4 Features of high performing homes Good thermal performance Minimise reticulated energy use Control moisture Minimise reticulated water use and wastewater production Source: Beacon Pathway Reduce resource use and waste generation Design recognised as good practice Site addresses neighbourhood sustainability issues Enable optimal operation and performance of the home

5 The Kingspan Lighthouse Code for Sustainable Homes in the UK All new homes carbon zero by 2016

6 Carbon Zero through Walls, roof, floor very high R values - above R-5 using Tek System, 284mm thick Wooden frame windows - triple glazed, gas filled and only over 18% of the building Thermal bridging less than 4.5% of surface area 88% heat recovery using mechanical ventilation Lighting 100% fluorescents and LEDs On-site renewable energy 4.7kW, 46m² photovoltaics 10kW automatic wood pellet boiler providing space and hot water heating 4m² solar thermal system providing space and water heating For more information see :

7 Located on the roof, above the central void over the staircase, the wind catcher provides passive cooling and ventilation. The wind catcher also brings daylight deep into the plan of the house and provides the ground floor sleeping accommodation with secure night time ventilation. For more information see :

8 For more information see :

9 1 Unit Photovoltaics 4.7kW Solar hot water 4m 2 Wood pellet boiler 2kW 25 Units Photovoltaics 4.7kW 250 Units 4 x Wood pellet micro-chp 1kW Local wind turbine 45kW ~ 15m blades Wood pellet boiler 50kW Biomass CHP 100kW Local wind turbine 400kW ~ 45m blades Biomass boiler 450kW

10 What is the thermal envelope? Graphic adapted from Homestar

11 It is the Barrier between conditioned and unconditioned spaces Graphic adapted from Homestar

12 COMFORT Are you protected? Percent of houses o Living room evening temperature ( C) Measured results from the BRANZ HEEP Study (400 houses)

13 Insulation building code minimums Building Code R Values through the ages Lightweight timber frame building Climate Zone 1 Element Ceiling Wall Floor Window none none Lightweight timber frame building Climate Zone 2 Element Ceiling Wall Floor Window none none Lightweight timber frame building Climate Zone 3 Element Ceiling Wall Floor Window none none

14 BAD, better, best (note the adapted from note )

15 Go beyond the minimum

16 So what s THE BEST TYPE OF insulation?

17 INSTALLED by a well trained person - IAONZ accredited installer Insulation Association of New Zealand

18 Well installed insulation

19 Untucked and strapped

20 When it goes wrong Insulation installation Downlights Glazing - location, type, protection Tradespeople

21 Don t try this at home! Damaged insulation Source: Investigating Quality Of Insulation In New Build Residential Homes, EECA, 2010

22 Problems - Folds Source: Investigating Quality Of Insulation In New Build Residential Homes, EECA, 2010

23 Tucks Source: Investigating Quality Of Insulation In New Build Residential Homes, EECA, 2010

24 Gaps Source: Investigating Quality Of Insulation In New Build Residential Homes, EECA, 2010

25 Missing insulation Source: Investigating Quality Of Insulation In New Build Residential Homes, EECA, 2010

26 Compressed by plumbing and wiring Source: Investigating Quality Of Insulation In New Build Residential Homes, EECA, 2010

27 Downlights covered, too close to flues Source: Investigating Quality Of Insulation In New Build Residential Homes, EECA, 2010

28 Downside to Downlights Penetrates the thermal envelope Creates a gap in the insulation Creates stack effect of air movement Something of a safety hazard in some ceilings Picture from consumer.org.nz Picture from real life what actually happens

29 Glazing Remember walls are at least 5 times better at keeping the heat in than windows!

30 Source: taken from A double honour for New Zealand architect World Architecture Festival; Tuesday, 29 July 2008, Press Release: Patterson Associates Award winning architecture Patterson s Mai Mai the building takes its name from the shelters used by duck hunters

31

32 NORTH Source: The Christchurch Press, 2 nd Oct 2012

33 When it goes right Brief Case Studies Beacon Pathway NOW home Little Greenie Zero Energy Home

34 Insulation and Passive Solar Design Little Greenie

35 Little Greenie Outside Air and Room Temperatures Over One Week Temperature Degrees Celsius Outside Air Temperature C Room Temperature C 0.0 Date / Time Series from 26 September through to 4 th October 2009

36 Case Study: Waitakere NOW Home 3 bedroom home - 146m 2 including garage Emphasis of design placed on quality not quantity Design, orientation and layout to maximise passive solar heating good thermal envelope

37 It looks like a normal suburban home Source: Beacon Pathway

38 Waitakere NOW Home - Performance Tenanted by an ordinary family 2 adults, 2 preschool children with no special training heating required on only 2 days of year Temperatures above WHO minimums throughout winter (16 o bedrooms 18 o living) Compared to their previous dwelling the family used 45% less electricity and saved $900 Source: Beacon Pathway

39 Electricity usage comparison Source: Beacon Pathway

40 Occupant Experience Loved the home warmth, spaciousness, healthiness and efficiency Significant reported health and wellbeing benefits from living in the house, including: decreased levels of ill health incl. asthma increased children s confidence a more active social life enhanced interfamily relationships better mental health You can t help but be positive, we don t get the winter blues Source: Beacon Pathway

41 Zero Energy House An Open Source Project to Build New Zealand s First Zero Energy House Produces as much energy on site as it consumes Achieves zero through: Building envelope design (no heating) Solar hot water heating Solar photovoltaic panels Images from

42 Design For Local Conditions _ Elevation showing SUMMER front yard WINTER shading... Directive 8.7 Site design - Buildings to address local conditions of topography, views and climate and opportunities for passive solar heating ROAD [AUCKLAND PLAN] h

43 Images from

44 Images from

45

46

47 Passive House = PassivHaus It is a building energy performance standard Can be applied to buildings of any type offices, schools, supermarkets, houses It is a performance standard not a design standard therefore no design limitations First complete one in Auckland 8+ more in design or under construction Good energy efficiency design principles Insulation / building envelope Air tightness Ventilation For more info see

48 Passive House Design Standards For more information please see Glen Murdoch:

49 Inc

50 1950s 2005 Frankfurt Tevesstr. before refurbishment... Source: BRE, UK... After refurbishment

51 1950s 2005 Frankfurt Tevesstr. before refurbishment... Source: BRE, UK... After refurbishment

52 Higher Perfoming Homes are coming transforming products, construction, industry

53

54 Features of high performing homes Good thermal performance Minimise reticulated energy use Control moisture Minimise reticulated water use and wastewater production Source: Beacon Pathway Reduce resource use and waste generation Design recognised as good practice Site addresses neighbourhood sustainability issues Enable optimal operation and performance of the home

55 Design considerations Thermal Energy Healthy Home Water Materials/waste Design quality Site location Operation orientation, shading, insulation, windows, thermal mass hot water, lighting, heating, appliances, clothes drying, dwelling size adequate ventilation, indoor air quality, pollutants rainwater and greywater systems. construction waste, management of domestic waste achieves Green Homes Scheme/ other third party rating social issues, natural features, accessibility information for new owners Source: Homestar