Key Targets set out in the EPBD recast
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Are we ready to meet the challenge?
Passive House Designers
Ireland: 264, UK = 364
Passive House Tradespersons
Ireland: 126, UK = 18
Weapons of Mass Destruction
Passivhaus Standard - as much hands as head
Death by PowerPoint ...
Not Acceptable for the Trades
Learning by Doing!
Train to nZEB Project – Building Knowledge Hub
Key Issues:
1. Built between 1961 and 1965, 17 Storeys high
2. Siptu received planning permission in 2012 to
demolish the tower and construct a new 22 Storey
replacement
3. Later in 2012 planning permission was
overturned by An Bord Pleanála, which ruled that
the new building would be “unacceptably
dominant in the city”
4. Poor Thermal Performance at 467 kWh/m2/yr PE
5. Inefficient heating system and services
6. Not compliant with TGD Part B – Fire
7. Not compliant with TGD Part M – Access &
Sanitary
STAIRS
STORE
EXISTING STAIR
CORE WITH
SINGLE ESCAPE
ROUTE
EXISTING EXTERNAL
CONCRETE UP STAND
WALL WITH MOSAIC
TILE FINISH UVALUE
3.33 W/(m2K)
STORE
TOILET
EXISTING LIFT
SHAFT
SINGLE GLAZED NON
THERMALLY BROKEN
ALUMINIUM WINDOW
UVALUE 5.60 W/(m2K)
EXISTING WINDOW
SPANDREL PANEL
UVALUE 2.26
W/(m2K)
ROTARY
AIR VENT
WALL UVALUE
3.33 W/(m2K)
SINGLE GLAZED NON
THERMALLY BROKEN
ALUMINIUM WINDOW
UVALUE 5.60 W/(m2K)
EXISTING EXTERNAL
CONCRETE UP STAND
WALL WITH MOSAIC
TILE FINISH UVALUE
3.33 W/(m2K)
SINGLE GLAZED NON
THERMALLY BROKEN
ALUMINIUM WINDOW
UVALUE 5.60 W/(m2K)
FRsi = 0.225
4.5oc
7.5oc
7.8oc
FRsi = 0.235
4.7oc
Dec 7th at 9.48am
March 21st at 9.00am
Dec 7th at 9.48am - Model
December 21st at 9.00am
Phenolic
Insulation
0.025 W/mK
Retrofit Wall
0.14 W/(m2K)
Compact Foam
0.04 W/mK
Phase Change
Ceiling tiles
Proposed triple glazed
Passive Windows
UVALUE = 0.85 W/(m2K)
Proposed triple glazed
Passive Windows
UVALUE = 0.85 W/(m2K)
Internal Solar
Control Blinds
Phenolic
Insulation
0.025 W/mK
Compact
Foam
.04 W/mK
Retrofit Wall
0.14 W/(m2K)
FRsi = 0.850
17.0oc
19.58oc
19.45oc
19.58oc
18.14oc
FRsi = 0.907
G CURVE
LT CURVE
Proposed triple glazed
Passive Windows
UVALUE = 0.85 W/(m2K)
TOILETS
STAIR CORE
Retrofit Wall
0.14 W/(m2K)
Air tightness
membrane
sealed to concrete
ceiling with air
tightness tape
Air tightness
membrane
Air tightness membrane
sealed to passive window
with air tightness tape
Calculation of Solar electrical energy generated on
site:
Air tightness
membrane
7,222 kWh / year divided by 17 floors
= 424 kWh / year per floor
(Option 2 – Maximum PV generation)
Air tightness
membrane
sealed to concrete
floor with air
tightness tape
Total per floor = 7,479 kWh / year
7,064 kWh / year per floor = Total energy requirement
PV Option 2 makes liberty tower energy positive
SUPPLY TO
OFFICE AREAS
AIR SOURCE COMPACT
HEAT PUMP SUPPLIES
HEATING, COOLING,
MVHR AND DHW ALL
THROUGH DUCTWORK
EXTRACT FROM
ALL WET ROOMS
AND FROM OFFICE
AREA
MALE WC
2 WC
2 WHB
1 URINAL
FEMALE WC
2 WC
2WHB
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Within the EuroPHit project,
a selection of residential and
non-residential buildings
across Europe are being
retrofitted according to
Passive House principles.
Northwest view
Two-storey block of 34 apartments with
modest common facilities (kitchen and dining
room)
Built during the early 1970’s
Southeast view
Floors, walls and roof - poured concrete with
little or no insulation incorporated
(walls – concrete panels with pebble dash
finish)
Solar gains with heavy shading to the
Northwest and quite open to the Southeast
Plant room on the roof accommodating a low
efficiency oil-fired boiler
New Wall:
215 mm Aerated
Block externally
insulated with
150mm EPS
U Value:
0.16 W/m²K
Existing concrete
panels externally
insulated with
250mm EPS
New Roof:
Insulated metal deck with
50mm sound insulation
150mm PIR insulation
U Value:
0.13 W/m²K
New Wall:
215 mm Aerated
Block externally
insulated with
200mm EPS
U Value:
0.13 W/m²K
Existing concrete
panels externally
insulated with
200mm EPS
U Value existing
3.75 W/m²K
U Value existing
3.75 W/m²K
U Value
proposed
0.15 W/m²K
U Value proposed
0.12 W/m²K
150 mm concrete floor
U Value existing
4.30 W/m²K
Triple glazing
Ug = 0.50 W/m²K
g = 45.2%
Multiple seals _ 3
Spacer ψ
Spacer ψ = 0.027 W/mK
Thermally broken frame
Thermally
broken
frame
Multiple rubber seals (airtightness)
Steel angle
causing a massive
thermal bridge
Ψ Value =
Steel angle
25 mm set back
from the edge of
the insulation layer
Ψ Value =
>15 ºC
Minimum required height from top of foundation to top of floor slab: 290 mm
To assure that at skirting level the surface temperature is above 15 ºC
In / In
Out / In
Out / Out
aerated block to be the airtight line on the second floor
existing concrete structure. External render on the
Agreed_airtight line_along outside face of the
the second floor
render on the aerated block to be the airtight line on
face of the existing concrete structure. Internal
Construction stage_airtight line_along outside
line on the second floor
Internal render on the aerated block to be the airtight
existing concrete structure.
Design stage_airtight line_along inside face of the