design of 2 fit-to-nzeb training and demonstration models, … · 2020. 2. 8. · fit-to-nzeb...

This project has received funding from the European Union’s Horizon 2020 research

and innovation programme under grant agreement No 754059.

Design of 2 Fit-to-NZEB training and demonstration models, dedicated to deep energy retrofits

Deliverable 3.1 of the FIT-TO-NZEB project

financed under grant agreement No 754059 of HORIZON 2020 Programme of the EU

The sole responsibility for the content of this publication lies with the

authors. It does not necessarily reflect the opinion of the European Union.

Neither the EASME nor the European Commission is responsible for any

use that may be made of the information contained therein.

MosArt / Passive House Academy

Fit-to-NZEB

Design of 2 Fit-to-NZEB training and demonstration models, dedicated to deep energy retrofits

A key component of the Fit-to-NZEB project is the design of retrofit models for the purpose of training in Building Knowledge Hubs (BKHs), namely Deliverable 3.1 (Figure 1). The Project requires that two core construction types be developed by the Passive House Academy (PHA, Ireland) as core models, that is, as indicative of model types and their illustration for subsequent adaptation and development by the other Partners reflecting both their respective construction traditions and climates and the higher standards required for nZEB (Nearly Zero Energy Building) performance.

Figure 1 Example of a BKH including demo and practice models and an airtight Room at centre

1

Fit-to-NZEB

These models serve two functions, namely:

a) Demo models for the purpose of demonstration of typical construction detailing and sequence of elements as well as for sketching exercise, discussion and oral examination. These models comprise simply one complete solution alternative in respect achieving the unbroken continuity of airtightness, insulation, minimal thermal bridging and, preferably, wind-tightness. The construction types selected should be typical for a given country or region but retrofitted in respect of the higher building performance required under nZEB (Figure 2).

b) Practice models that more or less correspond to the demo model construction types but for the purpose of hands-on practical training and examination. Unlike the complete demo model, these models are stripped to their basic structure, providing the basis for the practical retrofitting work (Figure 3).

Figure 2 Example of demo models

Figure 3 Example of practice models, including a massive / solid brick wall intended for retrofit training

2

Fit-to-NZEB

Developing the Brief - responding to Partner requests

Models

During the process of developing models types for use by the Fit-to-NZEB, some Partners requested that their respective country’s typical construction types would be considered by MosArt. Sets of details were, accordingly, forwarded by the Bulgarian, Croatian and Greek Partners. Having reviewed these, MosArt deemed the best response was to provide on each detail sheet a critical comment, as included in Appendix A, B and C.

The fulfillment of the contractual requirements is served, not by MosArt attempting to create details for each of the countries concerned as it is the Partners who better understood their own construction traditions and economy as well as climate and seismic challenges. Rather, it was deemed more appropriate to produce a set of drawings of the demo and practice models for the purpose of providing the Partners with guidance on how they can produce their own designs as bases for appropriate model construction and training. Thus, in a sense, the MosArt models were to function as ‘models of modes’. These models provided must not be seen as limiting alternative retrofit solutions but merely to indicate options to some typical conditions. The Partners are expected to develop model designs best suited to their respective countries. The same obtains regarding physical size – window and wall heights can be adjusted in order to ensure models fit into a given workshop.

In order to cover a range of construction types as well as construction elements, MosArt decided to provide three core model types, some of which being two-part with one retrofit option above and another below on the same model section. These models comprise masonry walls of concrete and solid / massive brick as well as of timberframe with a cavity and external leaf of rendered concrete block, and they each incorporate a window or door. The following is an outlined of these wall types. Drawings of these demo models, Drawing Nos: D3.1 A – D3.1 E and for practice models, Drawing Nos: D3.1 F - D3.1 H as A3 (fold-out) sheets are presented at the end of this Report.

Demo Models

Concrete walls: - with flat concrete roofs and parapets (existing / new using aerated block) - junction of wall panels sealed with EPDM tape or similar - solar shading alternative (bris soleil / integrated louvered blinds) - shallow and deep foundations

Massive brick walls:

- with existing pitched roof adapted to achieve continuity of insulation - external (upper part) and internal insulation (lower part), the latter being limited in

respect of condensation risk and determined by climate specific hygrothermal analysis

Timberframe with cavity and external leaf of rendered concrete block: - with raised pitched roof - replacement of external block leaf with woodfibre insulation

3

Fit-to-NZEB

- replacement of external block leaf with secondary timberframe structure and cellulose insulation

- filling of cavity with bonded bead insulation and mounting EPS insulation on to the existing concrete block wall the viability of this being verified by climate specific hygrothermal analysis.

Practice Models

Concrete wall with a fixed window and a 150mm and 50mm pipe and cable penetrating the wall

Massive brick wall with a fixed window and a 150mm, 50mm pipe and cable penetrating the wall

Timberframe with a fixed window and a 150mm and 50mm pipe and cable penetrating the wall

These models provide the basis for solutions that should be adapted to and developed in each Partner country and workshop environment. A window frame unglazed can be pre-fixed into the ope and whatever services are deemed appropriate fitted through the walls. Whilst it is preferable in the case of external insulation that windows are located just beyond the wall in the new insulation layer, it can be pragmatically realistic to retain, as an example, one window in the original position, that is, in the masonry layer, but requiring the packing of sufficient insulation around it and over the front frame in so far as is possible in order to avoid a thermal bridge. The Partners need to consider such matter for themselves.

The Partners are also encouraged to develop further these practice models, for example, by creating a corner or a room-like structure in order to provide more surfaces on which trainees can work as well as internal and external corner conditions, or to incorporate part of a roof, whether flat or pitched (Figures 4, 5 and 6). Please note that Figures 4, 5 and 7 below are taken from the Train-to-NZEB project (see http://www.train-to-nzeb.com/).

4

Figure 5 Z-shaped timberframe structure. Source: Terms of Reference for local teams for the creation of Building Knowledge Hubs. Deliverable 2.1 of the Train-to-NZEB project. Available at http://www.train-to-nzeb.com/what-weve-delivered.html

Figure 4 3-D model of masonry construction model type. Source: Terms of Reference for local teams for the creation of Building Knowledge Hubs. Deliverable 2.1 of the Train-to-NZEB project. Available at http://www.train-to-nzeb.com/what-

weve-delivered.html

Figure 6 Room-like masonry model of concrete block and brick

http://www.train-to-nzeb.com/

Fit-to-NZEB

Even greater likeness to real life conditions would be achieved with comprehensive and integrated room-like structure, whether in masonry (concrete or brick) fitted with doors and windows, as well as a generously sized roof. This is much the same as the kind of training rig used for apprentice carpenters but is ideal for retrofit training as it is representative of a significant number of existing conventional domestic structures requiring upgraded building fabric. For safe access and training practice it would be necessary to include a gallery platform structure (like permanent scaffolding) with stairs and rails (Figures 7, 8 and 9).

Figure 7 Bare masonry walls and roof framing above to be retrofitted, including the junction between these two elements, including gallery platform (and stairs beyond) for safe access. Source: Terms of Reference for local teams for the creation of Building Knowledge Hubs. Deliverable 2.1 of the Train-to-NZEB project. Available at http://www.train-to-nzeb.com/what-weve-delivered.html

Figure 8 Open roof framing on bare masonry walls ideally suited to practical retrofit training, including gallery platform for safe access

Figure 9 Standard timberframe structure (without rainscreen of masonry or light weight construction) with exposed floor, wall and roof framing suited to retrofit practical training

5

Fit-to-NZEB

Mechanical Systems: Renewable Energy and MVHR

In addition to the above demo and practice models, MosArt includes in this Report guidance on the provision of renewable energy systems (RES) and other appropriate mechanical systems. Given that part of the provision in each BKH is an airtight room for operating airtight testing equipment, it is deemed spatially efficient to use this structure to accommodate commonly available equipment and associated components necessary for their operation (Figure 6). Further spatial efficiency can be achieved by using the roof of the airtight Room for training on PV and solar thermal panel installation, but this would necessitate a gallery platform and stairs for easy access and safety. Figure 7)

Figure 6 Plan of Airtight Room indicating positioning of RES and MVHR equipment as well as low gallery platform and steps for access to panels on roof

Figure 7 Images of a roof rig for training on RES panels providing safe and easy access via a stairs and gallery platform

6

Fit-to-NZEB

The mechanical systems can comprise:

PV panel(s) on the roof, including a DC/AC inverter, PV generation meter and battery bank for energy storage inside and a consumer unit (trip-switch) (Figure 8).

Figure 8 Photovoltaic (PV) panel on roof, including inverter connecting to battery bank and consumer unit (trip- switch)

Solar thermal panel on the roof feeding into a twin-coil water storage vessel, supplemented by a heatpump, for heating and domestic hot water (DHW). Heating is delivered through a low temperature radiator (for a heating climate)(Figure9).

Figure 9 Solar thermal panel, heatpump connecting to twin-coil water storage cylinder and low temperature radiator

7

Fit-to-NZEB

Twin-coil water storage cylinder heated primarily by solar-thermal evacuated tubes for domestic hot water (DHW) and supplemented by a heatpump. Heating and cooling are provided by the heatpump and delivered through a fan coil unit using re- circulated air (heating and cooling climates) (Figure 10)

Figure 10 Twin-coil water storage cylinder and + solar thermal panel for DHW, heatpump connected to fan-coil for heating and cooling

MVHR unit, including a post-heater and sound attenuators, with intake and exhaust ducts connecting to the exterior and supply and extract ducts and their registers serving the interior – four supply and four extract registers mounted in an accessible suspended ceiling (Figures 11 and 12).

Figure11 Model of

8

MVHR with post- heater, sound attenuation and supply and extract registers

Figure 12 MVHR and associated components installed in an Airtight Room being used for training

AIRTIGHTNESS TAPE BONDED

TO CONCRETE FLOOR &

PLASTERED WALL. EPDM TO

BE USED WHERE POSSIBILITY

OF MOVEMENT

NEW SAND CEMENT & SKIM

EXISTING PRECAST

PANEL & PLASTER

SKIRTING

SELECTED FLOOR FINISH ON

EXISTING SLAB

150MM CONCRETE PAVING

180MM XPS INSULATION, MIN. 500MM BELOW

INTERNAL SLAB LEVEL. MECHANICALLY FIXED &

FINISHED WITH WATERPROOF SAND & CEMENT

WITH ALKALINE RESISTANT MESH REINFORCEMENT

PROPRIETARY STARTER PVC TRACK

FIXED TRUE & LEVEL AT DPC LEVEL

SECURELY FIXED TO WALL

EXISTING FOUNDATION

XPS INSULATION MECHANICALLY

FIXED TO EXISTING WALL.

INSULATION TO EXTEND DOWN TO

FOUNDATION LEVEL (Λ = 0.035 W/MK)

RENDER

EXISTING CONCRETE WALL

EXISTING RENDER

PH STANDARD WINDOW

EPS

(Λ = 0.031 W/MK)

AIRTIGHT LAYER - EXTERNAL RENDER

ON THE EXISTING CONCRETE WALL

COMPACFOAM CF100 (Λ = 0.038 W/MK)

REMOVE EXISTING CILL & INFILL WITH CONCRETE

AIRTIGHT SEAL BETWEEN NEW

CONCRETE AND EXISTING WALL RENDER

PRESSED METAL CILL OVER WIND / WATERPROOF

MEMBRANE (BLUE LINE)

mechanical fixing

NEW SAND

CEMENT & SKIM

EXISTING PRECAST

PANEL & PLASTER

PRIOR TO INSTALLATION OF WINDOW

APPLY AIRTIGHT TAPE AROUND OPE

CONNECTING EXTERNAL AIRTIGHT

LAYER TO INTERNAL SURFACE.

FOLLOWING INSTALLATION OF

WINDOW APPLY A SECOND LAYER OF

AIR TIGHT TAPE AROUND WINDOW

BEAD TO WATER PROOF WINDOWS

& DOOR HEADS AND JAMB


EXISTING RENDER

RENDER

EPS (Λ = 0.031 W/MK)



STRUCTURAL INSULATION (Λ = 0.04 W/MK)

EXTERNAL BLINDS ENCLOSURE WITH

RENDER BOARD TO EXTERNAL FACE

EXTERNAL LOUVRE BLINDS


EXISTING PRECAST

PANEL & PLASTER

EXISTING WINDOW TO BE REMOVED








POWDER COATED PRESSED METAL

CAPPING TO ARCHITECTS DETAIL

VAPOUR/AIRTIGHT BARRIER

FULLY SEALED AT ALL JOINTS &

PENETRATIONS & TO WALL

150MM PIR INSULATION (0.022 W/mK)

ROOF MEMBRANE LAID TO

MANUFACTURERS RECOMMENDED

FALL & FITTING INSTRUCTIONS

EXISTING CONCRETE

ROOF SLAB

ROOF MEMBRANE TAKEN UP & OVER

PARAPET IN ACCORDANCE WITH

MANUFACTURERS INSTRUCTIONS

AIRTIGHT LAYER - EXTERNAL RENDER ON THE


EXISTING CONCRETE WALLPOSSIBLE SUSPENDED CEILING

AIRTIGHTNESS TAPE BONDED TO CONCRETE

ROOF SLAB & PLASTERED WALL. EPDM TO BE

USED WHERE POSSIBILITY OF MOVEMENT

RENDER

EPS (Λ = 0.031 W/MK)

EPDM OVER JOINTS IN CONCRETE STRUCTURE

ARCHITECTURE LANDSCAPE URBAN DESIGN

This project has received fundingfrom the European Union's Horizon2020 research and innovationprogramme under grant agreementNo 754059

Construction type:

Existing concrete walls retrofitted with external EPS & flat roof

retrofitted with PIR insulation

Project:

Scale:

1:10 @ A3

Drawing no.:

Drawn By: Checked:AB AMcC January 2018

Date:

D3.1 A

AIRTIGHTNESS TAPE BONDED

TO CONCRETE FLOOR &

PLASTERED WALL. EPDM TO

BE USED WHERE POSSIBILITY

OF MOVEMENT


EXISTING PRECAST

PANEL & PLASTER

SELECTED FLOOR FINISH ON

EXISTING SLAB

150MM CONCRETE PAVING

180MM XPS INSULATION, MIN. 500MM BELOW

INTERNAL SLAB LEVEL. MECHANICALLY FIXED &

FINISHED WITH WATERPROOF SAND & CEMENT

WITH ALKALINE RESISTANT MESH REINFORCEMENT

PROPRIETARY STARTER PVC TRACK

FIXED TRUE & LEVEL AT DPC LEVEL

SECURELY FIXED TO WALL

EXISTING FOUNDATION

RENDER

WHERE SHALLOW FOUNDATIONS ARE UNCOVERED,

A STRIP OF HORIZONTAL INSULATION CAN BE

INCLUDED - THERMAL MODELING REQUIRED TO

CONFIRM EXTENT REQUIRED

SKIRTING


PH STANDARD WINDOW

EPS

(Λ = 0.031 W/MK)



COMPACFOAM CF100 (Λ = 0.038 W/MK)

RESIN COATED INSULATED CILL ON DPC

REMOVE EXISTING CILL &

INFILL WITH CONCRETE

mechanical fixing

NEW SAND

CEMENT & SKIM








WATERPROOF MEMBRANE

POWDER COATED PRESSED METAL

CAPPING TO ARCHITECTS DETAIL

ROOF MEMBRANE TAKEN UP & OVER

PARAPET IN ACCORDANCE WITH

MANUFACTURERS INSTRUCTIONS

AIRTIGHT LAYER - EXTERNAL RENDER ON THE


POSSIBLE SUSPENDED CEILING

AIRTIGHTNESS TAPE BONDED TO CONCRETE

ROOF SLAB & PLASTERED WALL. EPDM TO BE

USED WHERE POSSIBILITY OF MOVEMENT

RENDER

EPS (Λ = 0.031 W/MK)

mechanical fixing

STRUCTURAL THERMAL BREAK AT

BRACKET MOUNTING POINTS

NEW PARAPET CONSTRUCTED WITH

THERMAL BLOCKWORK

EXISTING CONCRETE FLAT ROOF

OVERHANG CUT BACK IN LINE WITH

FACE OF WALL

EPDM OVER JOINTS IN CONCRETE STRUCTURE

NEW PARAPET DETAIL

1:10 @ A1

VAPOUR/AIRTIGHT BARRIER

FULLY SEALED AT ALL JOINTS &

PENETRATIONS & TO WALL

150MM PIR INSULATION (0.022 W/mK)

ROOF MEMBRANE LAID TO

MANUFACTURERS RECOMMENDED

FALL & FITTING INSTRUCTIONS

EXISTING CONCRETE

ROOF SLAB

BEAD TO WATER PROOF

WINDOWS & DOOR HEADS

AND JAMB

RENDER

EPS (Λ = 0.031 W/MK)


EXISTING PRECAST

PANEL & PLASTER








EXISTING WINDOW TO BE REMOVED

GALVANISED AND POWDER COATED STEEL

CHANNEL / FRAME TO ENGINEERS DESIGN

POWDER COATED ALUMINIUM LOUVRES

FIXED BACK TO STEEL CHANNEL / FRAME

mechanical fixing


STRUCTURAL THERMAL

BREAK AT BRACKET

MOUNTING POINTS



Construction type:

Existing concrete walls retrofitted with external EPS & flat roof

retrofitted with PIR insulation

Project:

Scale:

1:10 @ A3

Drawing no.:


Date:

D3.1 B

125x15mm TIMBER SKIRTING PAINTED WHITE

FINISHED GROUND LEVEL

FINISHED FLOOR LEVEL

EXISTING RISING WALL

BRICK SOLID WALL EXISTING

TREAT EXISTING PLASTER FINISH WITH FUNGICIDAL

WASH/SPRAY

FLOOR FINISH

OPTIONAL SERVICE CAVITY CAN BE USED INTERNALLY

TO PROTECT AIRTIGHTNESS MEMBRANE.

KEY IN DPC TO AVOID RISING DAMP

100MM MINERAL WOOL BATT INSULATION 0.035 W/(mK)

TO OPTIMA DRY-LINING IWI SYSTEM

PLASTERBOARD & SKIM FINISH

AIRTIGHTNESS MEMBRANE SEALED AT ALL JUNCTIONS &

TAPED TO CONCRETE FLOOR.

GYPFRAME GL8 TRACK WITH FOAM STRIP BELOW


NEW DPC

EXISTING CILL & DPC

RED DEAL WINDOW BOARD

PAINTED WHITE

PASSIVE STANDARD TRIPLE

GLAZED WINDOW

50MM PHENOLIC INSULATION

0.023 W/mK

TREAT EXISTING PLASTER FINISH

WITH FUNGICIDAL WASH/SPRAY

100MM MINERAL WOOL BATT

INSULATION 0.035 W/(mK) TO OPTIMA

DRY-LINING IWI SYSTEM

AIRTIGHTNESS MEMBRANE SEALED AT ALL

JUNCTIONS

GYPSUM GYPFRAME GL8 TRACK


REPLACE EXISTING CONC. FILL AT

BACK OF CILL WITH PHENOLIC

INSULATION 0.023 W/mK

125x15mm TIMBER SKIRTING

PAINTED WHITE

EWI SYSTEM TO

MANUFACTURERS STRICT

INSTRUCTIONS

AIRTIGHTNESS MEMBRANE SEALED TO WALL

TO MANUFACTURERS INSTRUCTIONS

ACOUSTIC INSULATION BETWEEN

TIMBER FLOOR JOISTS

TIMBER FLOOR BOARDS

RENDER FINISH

2 COATS WET PLASTER & PARGE COAT ON

SERVICE CABLES & SKIM FINISH TO ENSURE

REQUIRED AIRTIGHTNESS IS ACHIEVED

EXISTING BRICKWORK WALL

200MM EPS PLATINUM

POLYSTYRENE INSULATION

0.031 W/mK

EX

TE

NT

O

F IN

TE

RN

AL IN

SU

LA

TIO

N


NEW DPC

RED DEAL WINDOW BOARD

PAINTED WHITE

WOOD FIBRE BOARD (PURINET)

0.039 W/mK TO FILL GAP WHERE

CILL IS REMOVED & TO SUPPORT

WINDOW FRAME

PASSIVE STANDARD TRIPLE

GLAZED WINDOW

EXISTING CILL TO BE REMOVED

EX

TE

NT

O

F E

XT

ER

NA

L IN

SU

LA

TIO

N

NEW PRESSED METAL CILL

2 COATS WET PLASTER & PARGE

COAT ON SERVICE CABLES & SKIM

FINISH TO ENSURE REQUIRED

AIRTIGHTNESS IS ACHIEVED

AIRTIGHTNESS MEMBRANE SEALED

TO WINDOW & DOWN TO WALL

WEBER MONOCOUCHE

RENDER FINISH

200MM PLATINUM


0.031 W/mK

50MM PHENOLIC INSULATION 0.023

W/mK


GYPSUM GYPFRAME GL8 TRACK

AIRTIGHTNESS MEMBRANE SEALED AT

ALL JUNCTIONS

TREAT EXISTING PLASTER FINISH

WITH FUNGICIDAL WASH/SPRAY

100MM MINERAL WOOL BATT

INSULATION 0.035 W/(mK) TO OPTIMA

DRY-LINING IWI SYSTEM

TIMBER FASCIA & SOFFIT

PAINTED WHITE

EXISTING SLATES OR TILES

EXISTING TIMBER BATTEN

400MM GLASSWOOL INSULATION

IN 2 LAYERS OF 200MM LAID IN

CROSS HATCH PATTERN TO

ENSURE NO GAPS

TIMBER BATTENS AND SERVICE

CAVITY

NEW PLASTERBOARD & SKIM FINISH

AIR TIGHTNESS MEMBRANE SEALED TO

WALL TO MANUFACTURERS DETAILS

TIMBER WALL PLATE

215MM EXISTING BRICKWORK WALL

WIND NOGGIN

BREATHABLE ROOF MEMBRANE

AT EAVES TAPED FOR WIND

TIGHTNESS & TAPED DOWN TO

WALLS

M

A

I

N

T

A

I

N

5

0

M

M

G

A

P

B

E

T

W

E

E

N

I

N

S

U

L

A

T

I

O

N

&

E

X

I

S

T

I

N

G

R

O

O

F

F

E

L

T

ALLOW FOR MAKING GOOD OF ALL

PLASTERWORK TO ENSURE EXISTING

WALLS AND SERVICE CABLES WITHIN

WALLS ARE FULLY AIRTIGHT

EXISTING CEILING TO REMAIN IN PLACE

REMOVE EXISTING SOFFIT

BOARD AND ALLOW

INSULATION TO CONTINUE UP

TO MEET EAVES INSULATION

EXISTING ROOF FELT

EXISTING GUTTERS

PHENOLIC INSULATION BETWEEN EXISTING ROOF

TRUSSES WITH ONE LAYER OF AEROGEL SHEET

PLACED OVER INSULATION, AEROGEL TAPED FOR

WIND TIGHTNESS

RENDER FINISH

200MM EPS PLATINUM


0.031 W/mK



Construction type:

Existing brick wall retrofitted

Project:

Scale:

1:10 @ A3

Drawing no.:


Date:

D3.1 C

INTERNAL INSULATION

EXTERNAL INSULATION

design of 2 fit-to-nzeb training and demonstration models, … · 2020. 2. 8. · fit-to-nzeb...

Documents