Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An...
Transcript of Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An...
![Page 1: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/1.jpg)
Simple Design Solutions Nick Grant
Elemental Solutions
![Page 2: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/2.jpg)
Value Engineering!
"It has been said an engineer is a man
who can do for five shillings what any fool
can do for a pound...."
Nevil Shute, quoting anonymous epigram
![Page 3: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/3.jpg)
Value Engineering!
“My job is not done until we have got rid of
all the architectural delight....”
![Page 4: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/4.jpg)
Value Engineered
(3.5 billion year design time)
![Page 5: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/5.jpg)
• Beetles image
Nature all looks a bit Darwinian
‘An inordinate fondness for beetles’ (300,000 species of beetle)
– JBS Haldane
![Page 6: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/6.jpg)
Fo
rm &
insula
tion
Fixed?
![Page 7: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/7.jpg)
Form
o Heat loss area/TFA
o <3 is good target
o Orientation and shading by building
o L & H shapes are problematic
o Structure inside – easy airtightness
o Think skeleton and skin
![Page 8: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/8.jpg)
Morning sun
Living
Kitchen/dine
Bed
Bed
Bath Porch
Office N
same wall
area!
Do what I say not what I did! o A/TFA = 5
o Shape shades windows
(reveal shading in PHPP)
![Page 9: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/9.jpg)
Reduce HL Area
- e.g. 100mm wall height = 0.1 x 32m perim x 0.15 U x
70 kKh/a = 34 kWh/a
if 90m2 TFA = 0.4 kWh/m2.a
- Flatter roof pitch or cold roof
- Lower lambda insulation = thinner walls+roof
![Page 10: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/10.jpg)
Maximise TFA
- Space under stairs
- Optimise stair width
- Avoid plant room label on domestic
- Beware double height spaces
- Design out ‘circulation’ for non dom
buildings.
![Page 11: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/11.jpg)
As in nature:
structure
air barrier
insulation
wind and weather
external structure
no penetrations
they leak!
![Page 12: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/12.jpg)
Superficial simplicity is expensive
http://www.archdaily.com
Photo © Eibe Sönnecken
![Page 13: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/13.jpg)
Fenestration
o Orientation
o South net gain, E&W summer comfort issues.
o Quantity
o For views and daylight not heat and symmetry.
o Format
o Size, shape, height, fixed and opening
elements.
![Page 14: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/14.jpg)
Passive Solar;
What does free heat cost/kWh?
![Page 15: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/15.jpg)
Gains 4000 kWh/a - losses 1863 kWh/a
Window area 36m2 = 59 kWh/m2.a
- About £6‘saved’ per m2 window per year @ 80p/kWh*
- Gets worse the more glass you add! (utilisation factor, solar
shading, additional mass - all cost)
- BUT, free if you needed the window area anyway.
- *(3% discount rate, 20 year life, £400/m2 window cost, 100% utilisation – YMMV)
![Page 16: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/16.jpg)
MK9 2HP MK9 2HP
Larger overhang to shade
May need external blinds
Structure more challenging
Difficult cill detail
Dirt from splash
Loss of wall space
Glass to floor
![Page 17: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/17.jpg)
Photo Lisa Pasquale
![Page 18: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/18.jpg)
Design out mechanical shading in UK climate
![Page 19: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/19.jpg)
44
Windows - performance
44
Uwindow=1.8 W/m2K
Poor Installation;
Traditional mullions
Installation free of thermal bridges;
Simplified design
Uwindow=0.8 W/m2K
For UK Building Regulations, the performance of these two
windows can be considered the same:
But with Passivhaus, you have to calculate them
individually
How could you optimise the window performance through design?
![Page 20: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/20.jpg)
![Page 21: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/21.jpg)
![Page 22: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/22.jpg)
![Page 23: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/23.jpg)
Thermal Bridges
-0.07 W/m.K
-0.05 W/m.K
-0.05 W/m.K
-0.05 W/m.K
-0.01 W/m.K
Thermal bridge free details save about 2-3 kWh/m2.a
Expensive to calculate for one-off so develop standard
details
![Page 24: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/24.jpg)
Internal Heat Gains
Low but realistic IHG
assumptions are key to
closing performance
gap.
Not all ‘free heat’ is free,
e.g. IT, lighting etc.
BUT under or
overestimating IHGs has
design & value
consequences
2.1W/m2 fixed
![Page 25: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/25.jpg)
+1.3 W/m2
= + 5.8 kWh/(m2.a)
![Page 26: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/26.jpg)
Domestic IHG
IHG = 28.46 x TFA -0.54
“All models are wrong, some are useful”
George Box
![Page 27: Nick Grant Elemental Solutions - UKPHC20...Beetles image Nature all looks a bit Darwinian ‘An inordinate fondness for beetles’ (300,000 species of beetle) – JBS Haldane n Fixed?](https://reader035.fdocuments.in/reader035/viewer/2022081620/6118e4f7570fd930e532a9b4/html5/thumbnails/27.jpg)
Are we there yet?
We can always add complexity and cost but
simplicity and value has an end point.
However we have a long way to go.