EnerPHit Certified Retrofit Dublin City Council Passivhaus …...2019/06/06 · Aver aged R es ul t 67 .610 0.50 0.345 Compar i s on of Ai r P er meabi l i ty R es ul t (m 3 /(hr

LOW ENERGY DESIGNPassive House Architect Thermal Bridge Modelling

Housing & Residential Services

St Bricin’s Park

EnerPHit Certified Retrofit

Dublin City Council Passivhaus project


Building Fabric

• 180-200 mm Rockwool Dual Density External

Wall Insulation

– U value 0.15 W/m2k was 1.78 W/m2K

• 400mm Isover Metac Roof Insulation

– U value 0.09 W/m2k was 1.4 W/m2K

• Composite 52mm PIR insulated flooring

- U value 0.22 W/m2k , was 0.73 W/m2K

• Triple Glazed Windows/Doors

• U value 0.08 W/m2k was 2.4-4.8 W/m2K


Building Fabric


Ventilation

• Mechanical Ventilation with heat recovery –

Compact P by Nilan

• Extract fan for wet rooms

• Internal fresh air and extract ducting in

ceiling.

• Under door gap to maintain ventilation


Ventilation


Air Tightness

• Existing Concrete shell;cavity gable walls

• Floor to wall junctions,

- wet plaster, liquid applied membrane

• Windows & Doors,

– plastered reveals

– Frames taped to reveals

• Ceilings

– Membranes

– Perimeter plaster/tape


Air Tightness


Thermal Bridging

• Key junctions modelled for psi and Frsi

• Internal and External Insulation at stairs

• Concrete eaves cut to remove thermal

bridge.

• Deck Access, externally insulated

• Ground insulated below path level

• Windows installed in insulation zone

,insulated support and reveals lined


Thermal Bridging


PH Tradesperson Training

1

C e r t i f i c a t ePassive House Tradesperson

Valid until 9th July 2023

Dr. Wolfgang Feist

64283 Darmstadt

Germany

www.passivehouse.com

Date of birth:

is hereby granted to use the seal depicted below until the expiration of this certificatein five years’ time. During the validity period the recipient will be listed as a CertifiedPassive House Tradesperson online at www.passivehouse-trades.org. The awardedtitle and seal are to be used only in conjunction with the recipient’s name.

The qualification was obtained in accordance with the examination regulations from1st April 2012 and awarded upon successful completion of the Certified Passive HouseTradesperson examination.

The examination was held on 25th May 2018 in Dublin, Ireland, by Passive HouseAcademy / O’Leary, Tomás.

In addition to Passive House Basics, the examination had the following specialisation:

⇤X Building Envelope ⇤ Building Services

TRADESPERSON

CERTIFIED PASSIVE HOUSETRADESPERSON

Darmstadt,

9th July 2018

Prof. Dr. Wolfgang Feist

This certificate does not replace any required professional qualification.


Some Challenges…..

• Airtightness– Sealing existing walls to floors– Attic hatches– Initial execution (spacing services and taping over window protection)– Sequencing and execution

• Thermal Bridging– Concrete eaves – Large Thermal Bridge removed allowing insulation continuity at external wall/eaves

– Insulated Window and Door supports– Continuity of insulation

• Mechanical Ventilation with Heat Recovery– Ducting layout in tight spaces a challenge– Space requirement for all mechanical and electrical services – planning, co-ordination and sequencing

• External Wall Insulation– Execution to Agrément Certification– Eaves Detail, sequencing and execution– Certification for Brick Slips

• Attic Insulation– Complete airtightness and mechanical and electrical services first, snag them– Only install insulation once all other trades are in place– Correctly installed attic insulation first time as a result of sequencing

• Verification Information gathering for SEAI Deep Retrofit Grant & EnerPHit certification– Getting certified data, sometimes immediately, sometimes weeks!

– Default values for heat pump, previously verified values should be stored by SEAI for future approval.– Psi install values for external doors, not PH components– Photo verification for the last 10%


Results

– BER A3

– Air Permeability

0.38m3/hr/m2 @ 50

Pascals

– Y factor for thermal

bridging range 0.05-0.09


ResultsComparison of BER results

Page 1 1626-335-BER summary-181214.xlsx

Floor Apartment BERRating

kWh/m2/yr

CO2 -

KgCO2

/m2/yr

EPC CPCOld bedsit

numberBER

Rating

kWh/m2/yr

% reductionCO2 -

KgCO2/m2/yr

% reduction

Ground 39 A3 63.9 12.57 0.387 0.374 52 E2 378.59 83% 70.94 82%

Ground 40 A3 63.89 12.56 0.388 0.375 54 E2 374.36 83% 70.16 82%

Ground 41 A3 64.08 12.60 0.388 0.375 none equiv

Ground 42 A3 64.03 12.59 0.387 0.374 58 E2 375.16 83% 70.3 82%

Ground 43 A3 64.75 12.73 0.372 0.359

First 44 A3 66.34 13.04 0.362 0.350 61 F 434.49 85% 81.25 84%

First 45 A3 70.64 13.89 0.437 0.424 63 E1 331.5 79% 62.24 78%

First 46 A3 61.13 12.02 0.380 0.369 65 E1 330.87 82% 62.13 81%

First 47 A3 59.66 11.73 0.369 0.358 67 E1 333.07 82% 62.53 81%

First 48 A3 61.09 12.01 0.377 0.366 69 E1 335.84 82% 63.04 81%

First 49 A3 62.43 12.28 0.367 0.355 71 E1 336.48 81% 63.16 81%

Average A3 63.81 12.55 0.38 0.37 E2 358.9 82% 67.3 81%

Comparison of BER resultsSt. Bricin's Park, Block 2

BER results comparing before and after


ResultsAirtightness test resultsSt Bricin's Park, Block 2 Dublin City Council 1626

1626-335-Airtightness Tests-181116-FINAL SET.xlsx 05/02/2019

Floor Apartment

Air Changes

(n50)

Permeability

m3/(hr/m

2)q

50

Air Changes

(n50)

Permeability

m3/(hr/m

2)q

50 NSAI Airtightness Tester

Ground 39 0.52 0.362 0.500 0.345 Greenbuild

Ground40

0.47 0.327 0.590 0.407Greenbuild


Ground42 0.34 0.258 0.460 0.322 Greenbuild


First44 0.50 0.345 0.590 0.405 Greenbuild

First 45 0.43 0.296 0.560 0.385 Greenbuild





Average 0.43 0.327 0.55 0.38

Note : Reports available for results in bold

Summary of Airtightness Test results

St. Bricin's Park, Block 2

FINALPreliminary

GreenBuild

GreenBuild Energy Rating & Building Information Services Ltd T/A GreenBuild

Solas, Fortchester, Inch, Gorey, Co. Wexford. NSAI Registration Number for Airtightness testing: 1.91.003 4

Pressure Test Result Summary 39 St. Bricins Park Dublin1

2018-10-25

Result @50Pa Flow m3/h Air changes (n50) Permeability m3/(hr.m2) (q50)

Averaged Result 67.610 0.50 0.345

Comparison of Air Permeability Result (m3/(hr.m2)) to 2011 Part L Regulations for new dwellings

Industry Standards Best Practise <3 Good Practise 3-5 Acceptable 5-7 Poor >7

Your Result 0.345

Notes:

The flow result is area independent. The air changes rate (air leakage) and m3/(hr.m2) (air permeability) results are both dependent on accurate measurements of the volume and envelope area of the dwelling. The measurements used here were calculated from measurements taken on site. The Equivalent leakage area is calculated at approximately 33.80 cm2. (@50Pa)

This is approximately the size a single hole would be through the wall, if all of the leaks now present in the dwelling were concentrated into one hole, measured at 50Pa. That is just over on twentieth of a sheet of A4 paper. The result to be used in a DEAP BER calculation is 1/20th of the Air Permeability value – 0.345/20 = 0.017. The test was undertaken in accordance with the provisions of the standard I.S. EN ISO 9972:2015

(Thermal performance of buildings - Determination of air permeability of buildings - Fan pressurization method )-

Method 2 (equivalent to older Method B), and all variables were within acceptable limits.

‘ equivalent leakage in a single hole..would be..1/20th of a sheet of A4 paper’


ResultsEnerPHit summary

Certificate

C lien t D ublin C ity C oun cil

C ivic O ffices , W ood Q uay

D ublin 8, Irelan d

A rchitect L o w E n ergy D es ign

3 8 B ram ley W alk

D 15 W 2 W Y C as tlekn ock, Irelan d

B uildin g M orley W als h C o n s ultin g E n gin eers

S ervices 41 L o w er D om in ick S treet

D ublin 1, Irelan d

E n ergy L o w E n ergy D es ign

D 15 W 2 W Y C as tlekn ock, Irelan d

This buildingAlternative

criteria

Heating H eatin g dem an d [kW h/(m ²a)] 21 ≤ -

Cooling C o o lin g + dehum idificatio n dem an d [kW h/(m ²a)] - ≤ -

[W /m ²] - ≤ -

F requen cy of overheatin g (> 2 5 °C ) [% ] 0 ≤

[% ] 0 ≤

Airtightness Pres s urizatio n tes t res ult (n 5 0) [1/h] 0.6 ≤

Non-renewable primary energy (PE) PE dem an d [kW h/(m ²a)] 127 ≤

Renewable primary energy (PER) PE R -dem an d [kW h/(m ²a)] 58 ≤ -

[kW h/(m ²a)] 0 ≤ -

Component quality

[W /(m ²K )] - ≤

[W /(m ²K )] 0.35 ≤

[W /(m ²K )] 0.12 ≤

[W /(m ²K )] - ≤

[-] 19 ≤

[-] 55 ≤

W in do w s /E xterior doors (U w ,in s talled) [W /(m ²K )] 0.89 ≤

W in do w s (U w ,in s talled) [W /(m ²K )] - ≤

W in do w s (U w ,in s talled) [W /(m ²K )] - ≤

[-] 0.63 ≤

[kW h/(m ²a)] 24 ≤

[% ] 75 ≤

[% ] ≤

T he as s ociated certificatio n booklet co n tain s m ore characteris tic values for this buildin g.

##

C ertifier: T om á s O 'L eary, M o s A rt L td.

www.passivehouse.com 20893-20903_MosArt_PH_20190430_TOL

Block 2

St. Bricin's Park, Block 2, Arbour Hill, Dublin 7, Ireland

D r. W olfgan g F eis t

6 4 2 83 D arm s tadt

G erm an y

-

10

C ertified retrofit

'E n erP H it C las s ic'

(C lim ate zon e: C oo l-tem perate) Wicklow County Campus, Clermont

House, Rathnew, Co.Wicklow A67

X566, Ireland

3 8 B ram ley W alk

Criteria

-

-

12 7

1.0

C o n s ultan t

G en eratio n (referen ce to groun d area)

B uildin gs retrofitted to the E n erP H it S tan dard offer excellen t therm al com fort an d very good air quality all year

roun d. D ue to their high en ergy efficien cy, en ergy co s ts as w ell as green hous e gas em is s io n s are extrem ely lo w .

The design of the above-mentioned building meets the criteria defined by

the Passive House Institute for modernization to the 'EnerPHit Classic' standard:

F requen cy of exces s ively high hum idity 2 0

2 5

-

Building quality

C o o lin g load

-

-

-

-

V en tilatio n (effect. heat recovery efficien y)

-G lazin g (g-value)

G lazin g/s hadin g (m ax. s o lar load)

V en tilatio n (hum idity recovery efficien cy)

-

-

-

-

-

-

-

T ilted or vertical exterior s urface (S R I) -

W all w ith in terio r in s ulatio n to groun d (U -value)

F lat roof (S R I)

B uildin g en velo pe to am bien t air (U -value)

B uildin g en velo pe to groun d (U -value)

W all w ith in terior in s ulatio n to am bien t air (U -value)

Certification Documentation

This building has been awarded the

Quality Approved Passive House

certificate by MosArt Ltd.

This certification is based solely on the design data and specifications provided to MosArt

Ltd. by the client for the purpose of certification. MosArt Ltd. has checked and approved the

building’s energy balances according to these data.

This certification does not cover quality assurance of the construction work or design

implementation. MosArt Ltd. hereby takes no responsibility for any faults in the above.


Summary

– You have to set standards to achieve them

– The majority of stakeholders need to support the project objectives (some never will!)

– Training for those unfamiliar helps understand the ‘why’ behind the ‘how’ skills learned.

– We’re are doing it differently and ‘I’ve been doing it like this for 20 years” doesn’t wash if you’re doing it wrong!

– Attitude, Attitude, Attitude is critical, positive and solution driven.

Dublin City Council’s first Passivhaus project and first EnerPHit scheme

Project received funding as part of SEAI’s Deep Retrofit Grant scheme 2018

Example to contribute to DUBLIN CITY COUNCIL 2019-2024 CLIMATE CHANGE ACTION PLAN

Low Energy Design shortlisted as designers in residential retrofit in the Isover Energy Efficiency Awards on 6th June

Project scheduled to feature in Passive House + next issue

Documents

EnerPHit Certified Retrofit Dublin City Council Passivhaus …...2019/06/06 · Aver aged R es ul t 67 .610 0.50 0.345 Compar i s on of Ai r P er meabi l i ty R es ul t (m 3 /(hr