Case Study 2 - SEAI

DEAP 4.2.0

Case Study 2

Case Study 2 – Dwelling Details

All DEAP assessment inputs for this dwelling are provided in the online training materials

1950s 2 storey, 2 bedroom mid-terraced houseSolid mass concrete walls with EWIInsulated attic & sloping ceilingsNew windows installedWhole house mechanical extract ventilation

Case Study 2 – General Information & Inputs

Slides are colour coded

Grey Slides = For information purposes only Blue & White Slides = Case study inputs

Case Study 2 – Getting Started

deap.seai.ie

Logging in to DEAP 4 – Registered Assessors

Enter NAS username

Enter NAS password

Login


Click here (START NEW SURVEY)


Click here (MPRN is unknown)


Complete mandatory fields- MPRN- Address Line 1- County/City- Dwelling Type- Storeys- Year of construction


Error notice due to selection of existing dwelling survey with an MPRN of zero

Complete mandatory fields- Type of Rating- Purpose- Building Regulations

DEAP 4.2.0

Case Study 2

Building

Building - Floors

Enter information to calculate Building Dimensions (total floor area, volume & living room %)- Enter average storey height for each storey- Living room area- Floor u-values & areas- Non-heat loss floors (to calculate total floor area)

- Input average storey height- The number of storey height input fields is populated from the ‘No. of storeys’ in Dwelling Details

Building – Floors [Average Storey Height]

Case Study 2 - Building, Floors [Average Storey Height]

2.46 2.63

- Input Living Area (m2)

Building – Floors [Living Area]

8.75

Case Study 1 - Building, Floors [Living Area]

Building – Floors [Add Floor]

Click on ADD FLOOR

- Age Band is auto filled using age of construction

- This can be changed by selecting another age band from the drop-down menu

- Fields are enabled / disabled depending on floor type selected

Building – Floors [Adding a Floor]

If underfloor heating is present – tick the box

Building – Floors [Adding a Floor]

- Tick box if the floor is the floor of a room-in-roof in an existing dwelling

- This auto-calculates the heat loss area of the room in roof

Building – Floors [Add Floor]

Case Study 2 - Building, Floors [Add Floor 1]

30.44

9.74 0.61 default


- Floor is added to list of floors- Floor area appears in area totals


Click on ADD FLOOR


30.44

The first floor in this dwelling is a non-heat loss floor

It is added here to calculate the total floor area of the dwelling

The heat loss through this floor is zero

This floor is not included as a heat loss floor



Total Floor Area = 60.88m2

Total Heat Loss Floor Area = 30.44m2

Case Study 2 - Building, Roofs [Add Roof 1]

Click on ADD ROOF

Fields are enabled / disabled depending on roof type selected



24.5 0.13 default

300mm


- Roof is added to list of floors- Roof area appears in area totals


7.11 0.22 non-default


Total Heat Loss Roof Area = 31.61m2

Case Study 2 - Building, Walls [Add Wall 1]

Fields are enabled / disabled depending on wall type selected


32.4

0.27 non-default


Total Heat Loss Wall Area = 32.40m2

Building – Rooms

The rooms tab is optional Offers an alternative way to enter/view windows, doors, bulbs, vents etc.

Enter- Room Type- Storey- Room Name

Building – Rooms

Case Study 2 – Building, Rooms [Add Living Room]


Entering data in Rooms is optional

View Room Items


Can add to each room type:- Windows- Doors- Bulbs- Showers- Baths- Ventilation Openings- Attic Hatches

Building – Rooms

Case Study 2 – Building, Doors [Add Door 1]

Library opens with default doors


Select solid exposed door

Click on ADD SELECTED ITEM


Total Heat Loss Door Area = 1.85m2

Building – Doors [Editing a Door]

To Edit Door- Click on door in list

after it is added to survey

Can Edit Survey Details:- No. of items- Room- Area- U-value- Description- Draught Stripping

For calculation of % of draught-stripped opes

Case Study 2 – Building, Windows [Add Window 1]

Library opens with default windows (DEAP manual table S9)


The window type is not in the library (non-default)

Go to ADD NEW ITEM TO LIBRARY



1 1

0.7

1.4 0.75

16mm


Optional inputs for overheating risk assessment



4.46 SE AVE

4 4

U= 1.4

- Input Survey Details

- Complete all mandatory fields

- Click on Save

- Window is added to survey

- Cant edit product details

W02+W07

For calculation of % of draught-stripped opes


Error indicates that survey details haven’t been entered yet – click on window to edit

Copy window with U-value of 1.4


Error indicates that survey details haven’t been entered yet – click on window to edit


7.08 NW AVE

6 6

- Input Survey Details

- Complete all mandatory fields

- Click on Save

- Window is added to survey

- Cant edit product details

W03+W04+W05+W06U=1.4

Case Study 2 – Building, Windows

Case Study 2 – Building, Global Factors [Thermal Mass]

Case Study 2 – Building, Global Factors [Thermal Bridging]

0.15

0.08

0.11

Input calculated value

DEAP 4.2.0

Case Study 2

Ventilation

Case Study 2 – Ventilation [Infiltration due to openings]

Case Study 2 – Ventilation [Infiltration due to openings]

No draught lobby on main entrance – Leave unticked

Case Study 2– Ventilation [Add Ventilation Item]

Click on Add Ventilation Item to add- No. of chimneys- No. of open flues- No. of permanent vents- No. of intermittent fans- No. of flueless combustion room heaters

Case Study 2 – Ventilation [Add Ventilation Item]

- 1 flue added

Ventilation [Structural Air Tightness]

- Add air permeability test results or default air tightness based on structure type etc.- Add number of sides sheltered- Add attic hatches (for calculation of draught proofing %)

Case Study 2 – Ventilation [Air Tightness]

- Is there an air-permeability test result – Yes – tick box

Case Study 2 – Ventilation [Sides Sheltered]

No. of Sides Sheltered = 2

Case Study 2 – Ventilation [Air Tightness]

- Attic hatch is added to capture the opening for draught-stripping % calculation- This is disabled here because there is an airtightness test result

Ventilation [Attic Hatch]

- Add Attic Hatch – to include in calculation of % of openings draught-proofed

- Select attic hatch with or without draught proofing

Ventilation [Ventilation Method]

- Enter Ventilation Method- Fields enable/disable depending on Ventilation Method selected

Ventilation [Ventilation Method]

- Enter Ventilation Method- Fields enable/disable depending on Ventilation Method selected

Ventilation [MVHR]

- New NZEB DEAP input- Is ducting insulated where outside of insulated dwelling envelope – No – tick box [EAF = 0.85]- Is ducting insulated where outside of insulated dwelling envelope – Yes – untick box [EAF = 1]- No outside of insulated dwelling envelope [Not Applicable] – untick box [EAF = 1]- EAF adjusts efficiency of heat exchanger

- Ticked as default = worse case scenario

Case Study 2 – Ventilation [Ventilation Method]

- Select Whole House Extract Ventilation- Automatically applies default SFP- Enter PCDB values where available

Case Study 2 – Ventilation [Ventilation Method]

- Enter PCDB values where available- Enter Manufacturer, Model, No. of wetrooms & ducting type

Case Study 2 – Building [Results]

- Total Element Area = 107.84 m2

- Total Heat Loss = 98.522 W/K- HLI = 1.618 W/K/m2

DEAP 4.2.0

Case Study 2

Space Heating

Space Heating

Enter:- Controls & Responsiveness of Space Heating System- Pumps & Fans- Heat Sources- Details of Summer Internal Temperature (optional)

Case Study 2 – Space Heating [Controls & Responsiveness]

Individual Scheme

Select - Central Heating System- Gas & Oil Boiler- Oil Boiler- Condensing- Radiators- Time & Temp Zone Control- Boiler Interlock

Case Study 2 – Space Heating [Pumps & Fans]

Enter- 1 Central heating pump, room stat, inside dwelling- 1 Oil boiler pump, room stat, outside

Case Study 2 - Space Heating [Heat Sources]

Add Primary Heating & Secondary Heating

Space Heating [Add Primary Heat Source]

- Search results are filtered to match heating system properties selected in the controls & responsiveness tab

- If gas boiler is selected in controls and responsiveness, the library will only search for gas boilers

Case Study 2 – Space Heating [Add Primary Heat Source]

- Boiler installed in dwelling is a Grant Vortex Module 50-90 boiler

- Go to SEARCH

- Type Grant Vortex Module 50-90

- Searches HARP database


- Click on Grant Vortex Module 50-90 95% efficient to select this (turns blue)

- Click on ADD SELECTED ITEM

Case Study 2 - Space Heating [Add Primary Heat Source]

- Product details provides details on HARP database

- Can’t edit these

- Efficiency adjustment factor is auto-filled from controls & responsiveness tab

Case Study 2 - Space Heating [Add Primary Heat Source]

- Heat % = % of heat provided by the selected heating appliance

- As only one heating appliance has been selected, 100% is assumed


Select fuel type from drop-down menu

Select Heating Oil


Tick box - boiler also heats water

Boiler will also appear as Water Heating Heat Source

Case Study 2 – Space Heating [Heat Sources]

Primary heating added Add Secondary Heating

Case Study 2 – Space Heating [Add Secondary Heat Source]

Waterford Stanley OisinStove is installed in dwelling

Stove is on HARP

Efficiency = 77%


Solid fuel room heaters on harp are not included in the DEAP 4 library database

Click on ADD NEW ITEM TO LIBRARY

Once added, the item will remain in assessor’s own library for re-use


Item Type = Heat Source

Item NameManufacturerModel

Heating Source Type = room heater

Efficiency = 77%

SAVE


- Heat % = % of heat provided by the selected heating appliance

- Previously the fraction of heat was inputted (was typically 0.1)

- Now the equivalent % is inputted (typically 10%)


Heat % = 10%

Fuel type = Manufactured Smokeless Fuel

Tick box for ‘Heats Water’ is disabled as this is not applicable for secondary heating

Fields disabled where not applicableClick Save

Case Study 2 – Space Heating [Heat Sources Added]

Secondary Heating is added providing 10% of heatingPrimary Heating automatically changes to 90%Primary & Secondary Heating total = 100%

Case Study 2 - Space Heating [Editing Heat Sources]

To edit heating source, click on heating applianceEdit heat source box opens up Delete

Case Study 2 - Space Heating [Heat Sources]

Space Heating [Summer Internal Temperature]

Enter effective air change rate for summer period

Summer mean external temperature15°C = default

No impact on BER result

DEAP 4.2.0

Case Study 2

Water Heating

Water Heating [Options & Storage]

This tab is the equivalent of the Water Heating Tab in DEAP 3

Enter- Details of the Showers & Baths in the dwelling (New NZEB input)- Low water consumption <125 l/p/d (New NZEB input)- Details of DHW storage - Combi boiler details- Primary circuit

Case Study 2 - Water Heating [Add Showers & Baths]

Add Showers & BathsThis information affects the hot water demand at taps calculation

Case Study 2 – Water Heating [Adding Showers & Bath]

- Library common items contains the following default items

- Vented hot water system- Vented hot water system

with pump- Unvented hot water system- Instantaneous electric

shower (vented or unvented)- Bath


Select

- Bath- Mixer Shower – Vented hot

water system + pump

- Click on ‘ADD 2 SELECTED ITEMS’


Added:1 Shower – mixer - vented hot water system + pump1 Bath

Water Heating [Options]

- Ticked box = yes- Unticked box = no

Case Study 2 – Water Heating [Options]

- Tick boxes for the following:- Distribution Losses- Storage Losses

Water Heating [Storage]

Scroll down to enter in DHW storage details

- Enter details of DHW Storage

Displays Temp. Factor unadjusted & temp. multiplier factor based on storage details entered


Type in storage volume

Select storage type from drop-down menu

Tick box if Hot Water Storage is indoors of in group heating scheme


If manufacturers declared loss is available – tick boxInput Make & Model of DHW storage & Declared Loss [kWh/day]

If declared loss is not available – leave untickedInput ‘Insulation Type’ and ‘Insulation Thickness’ where applicable

Case Study 2 – Water Heating [Storage]

Tick boxes for hot water storage indoors

Storage Type = Cylinder, IndirectStorage Volume = 95 litres

Manufacturers declared loss is not available – leave unticked

Insulation Type = Factory Insulated Insulation Thickness = 30mm

Water Heating [Primary Circuit Loss Type]

Select Primary Circuit Loss Type from drop-down menu

Case Study 2 – Water Heating [Primary Circuit Loss Type]

Select Boiler with uninsulated primary pipework and with cylinder thermostat

Case Study 2 – Water Heating [Options]

In this dwelling, there is- A cylinder thermostat- Separate time control of DHWThese should therefore be ticked

The following fields are disabled as they are not applicable to the storage type selected- Is there a separate timer for heating the store- Is store in an airing cupboard

Low water usage is left unticked as this cannot be substantiated for this dwelling

Water Heating [Low water consumption]

New NZEB input.

Tick box is water consumption is designed to be less than 125 l/p/d (this reduces water heating demand)

To tick the box, assessors must have a copy of the water efficiency calculation and all relevant technical data sheets to support the calculation

Refer to latest technical bulletin for further details of calculation

Case Study 2 - Water Heating [Solar]

Add Solar CollectorThis links to HARP Database

No solar collector in this dwelling – leave blank

Water Heating [Heat Source]

Heat source automatically appears in water heating & ‘ADD HEAT SOURCE’ is disabled if

‘HEATS WATER’ is selected in space heating

Water Heating [Heat Source]

‘ADD HEAT SOURCE’ is enabled in water heating if ‘HEATS WATER’ is not ticked in space heating

Case Study 2 - Water Heating [Heat Source]

‘HEATS WATER’ was selected in space heating, therefore the same boiler is automatically applied in water heating

No further action required

DEAP 4.2.0

Case Study 2

Lighting

Lighting [Lighting Design Unknown]

If lighting design is not known, leave box unticked

Click on ADD BULB

Select each of the applicable bulb types from the library (when selected, item turns blue)

Applies default efficiency for bulb type

Click on ADD SELECTED ITEMS

Lighting [Lighting Design Unknown]

1 of each bulb type selected is automatically added to the survey.To edit the number of bulbs, click on the relevant line and enter the no. of bulbsClick SAVE

Lighting [Lighting Design Known]

If box is ticked, must also enter Power (Watts)

Where lighting design is known:- Enter Power (W)

- If known, enter efficiency, otherwise default efficiency is applied

Must provide lighting design as supporting evidence

Click SAVE

If lighting design is known, tick box

Case Study 2 – Lighting

Lighting Design unknown – Leave box untickedADD BULB to enter default bulb types


Library opens with the 5 default bulbs.

Select- Default Halogen LV- Default LED/CFLs

Click on ADD 2 SELECTED ITEMS


4 Default Halogen LV14 Default LED/CFLs added

DEAP 4.2.0

Case Study 2

Renewables

Renewables

Select type of Renewable

Renewables [Energy Produced or Saved]

Enter description of renewable technology

Enter calculated Delivered Energy

Select Fuel type (applies applicable conversion factors)

Enter calculated Part L total contribution (where applicable)

Renewables [Energy Consumed]

Energy ConsumedEnter details of technologyEnter delivered energyEnter primary energy conversion factorEnter CO2 emission factor

To add more renewables click on Renewable 2 and Renewable 3

Renewables [Energy Consumed]

This section is only applicable for TGD L 2005

Case Study 2 – Renewables

No renewables in this dwelling – leave blank

DEAP 4.2.0

Case Study 2

Evidence

Evidence [Completeness]

Completeness – 88%Survey evidence section not yet completed

Evidence [Completeness]

Evidence – 0%Evidence section not yet completed

Letter of engagementGeneral – survey form, exterior photos, calculationsBuildingVentilationSpace HeatingWater HeatingLightingRenewables

Evidence [Typical evidence]

• Letter of Engagement• Survey Form• Calculations• Sketch / Drawings• Photos (exterior, heating appliances, heating controls, representative sample

of fixed lights, attic insulation, attic hatch draught-proofing)• Supporting evidence for non-default values

Evidence [Uploading]

Select evidence items

You can select a number of items at one time

In this example, all lighting photos have been selected

Click on ADD EVIDENCE

Evidence [Uploading]

For each piece of evidence, select the relevant section from a drop-down menu

Continue to upload evidence until 100% completeness is achieved

Letter of engagementGeneral – survey form, exterior photos, calculationsBuildingVentilationSpace HeatingWater HeatingLightingRenewables

View Assessment

VIEW SURVEY takes you back to survey inputs

DEAP 4.2.0

Case Study 1

Rooms

Building – Rooms

Building – Rooms

Rooms in dwelling:Living RoomHallwayKitchenLandingBathroomBedroom 1Bedroom 2

Can use rooms to add items

Building – Rooms

Each window is assigned to a room

Building – Rooms

Can use rooms to add items to each room or review itemsUsing rooms to input items has no impact on the BER result

DEAP 4.2.0

Case Study 2

Heat Pumps

Inputting a heat pump [Controls & Responsiveness]

Enter:Sub Category = Heat pumpHeating System = Air to water heat pump (electric)Heat Emitter Type Heating System ControlsResults for temp. adjustment, control category & responsiveness generated based on inputs

Inputting a heat pump [Pumps & Fans]

Enter details of pumps and fans in the dwelling

Adding a heat pump

Click on ADD HEAT SOURCELibrary opens upClick on ADD NEW ITEM TO LIBRARY

Adding a heat pump to library

Space Heating StandardHeat pump only provides water heatingEco-design data availableHARP data available onlyNo test data available


Water Heating StandardHeat pump only provides space heating

HARP data available only

IS EN 16147 data availableNo test data available


From Ecodesign data:- Seasonal space heating

efficiency, ɳs, %- Temperature control- TOL

From Ecodesign data:- Water heating

efficiency, ɳwh, %- WTOL


Heat pump test data opens automatically with open fields for ‘Test condition – High (55°C)This data is mandatory where IS. EN 14825 is selected as test standard

To input additional test data,click on- Test condition – Low (35 °C)- Test condition – Medium

(55°C)- Test condition – Very high

(65°C)


Enter Heating Capacity (kW) & Coefficient of Performance for Test Condition – High (55°C)


Enter Heating Capacity (kW) & Coefficient of Performance for Test Condition – Low (35°C),if available.Continue to input for Medium & Very High if available


Enter IS EN 16147 test data

Select if COP or water heating efficiency is availableThis will enable the relevant field for data entry


Enter IS EN 16147 test data

When all mandatory fields have been entered, SAVE becomes enabled

Enter:- Reference hot water

temp- Capacity of heat pump- Declared load profile- Standby heat loss- Volume of DHW

accounted for in test


Heat pump is added to library

Click on ADD SELECTED ITEM

Adding a heat pump to survey

Tick box if heat pump also heats water

Input daily operation (h)Input design flow temp (°C)

Input details of back up space and water heating if present

These survey details will update the efficiency of the heat pump to reflect its efficiency as installed in the dwelling


If the heat pump also heats water, when the heat pump is added to the survey from the library, error messages will appear to notify the user that the efficiency of the heat pump and the efficiency adjustment factor will be updated as soon as the DHW storage information is inputted.

When the water heating inputs are complete, the efficiency and EAF update automatically


Heat pump type of DHW – this is enabled when a heat pump is added & is required to set the required flow temperature from heat pump to hot water storage [60°C/65°C]

Enter in water storage details for the heat pump as installed in the dwelling


When ‘heats water’ is selected in space heating, the heat pump is automatically added as a water heating source in the survey

www.seai.ie

Case Study 2 - SEAI

Documents