Transcript
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
Complete mandatory fields- MPRN- Address Line 1- County/City- Dwelling Type- Storeys- Year of construction
Case Study 2 – Getting Started
Error notice due to selection of existing dwelling survey with an MPRN of zero
Complete mandatory fields- Type of Rating- Purpose- Building Regulations
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]
- 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]
- 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]
- Floor is added to list of floors- Floor area appears in area totals
Case Study 2 - Building, Floors [Add Floor 2]
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
Case Study 2 - Building, Floors [Add Floor 2]
Total Floor Area = 60.88m2
Total Heat Loss Floor Area = 30.44m2
Fields are enabled / disabled depending on roof type selected
Case Study 2 - Building, Roofs [Add Roof 1]
Case Study 2 - Building, Roofs [Add Roof 1]
- Roof is added to list of floors- Roof area appears in area totals
Case Study 2 - Building, Walls [Add Wall 1]
Fields are enabled / disabled depending on wall type selected
Building – Rooms
The rooms tab is optional Offers an alternative way to enter/view windows, doors, bulbs, vents etc.
Can add to each room type:- Windows- Doors- Bulbs- Showers- Baths- Ventilation Openings- Attic Hatches
Building – Rooms
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)
Case Study 2 – Building, Windows [Add Window 1]
The window type is not in the library (non-default)
Go to ADD NEW ITEM TO LIBRARY
Case Study 2 – Building, Windows [Add Window 1]
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
Case Study 2 – Building, Windows [Add Window 2]
Error indicates that survey details haven’t been entered yet – click on window to edit
Copy window with U-value of 1.4
Case Study 2 – Building, Windows [Add Window 2]
Error indicates that survey details haven’t been entered yet – click on window to edit
Case Study 2 – Building, Windows [Add Window 2]
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 – 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
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 [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
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
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
Case Study 2 – Space Heating [Add Primary Heat Source]
- 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
Case Study 2 – Space Heating [Add Primary Heat Source]
Select fuel type from drop-down menu
Select Heating Oil
Case Study 2 – Space Heating [Add Primary Heat Source]
Tick box - boiler also heats water
Boiler will also appear as Water Heating Heat Source
Case Study 2 – Space Heating [Add Secondary Heat Source]
Waterford Stanley OisinStove is installed in dwelling
Stove is on HARP
Efficiency = 77%
Case Study 2 – Space Heating [Add Secondary Heat Source]
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
Case Study 2 – Space Heating [Add Secondary Heat Source]
Item Type = Heat Source
Item NameManufacturerModel
Heating Source Type = room heater
Efficiency = 77%
SAVE
Case Study 2 – Space Heating [Add Secondary Heat Source]
- 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%)
Case Study 2 – Space Heating [Add Secondary Heat Source]
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
Space Heating [Summer Internal Temperature]
Enter effective air change rate for summer period
Summer mean external temperature15°C = default
No impact on BER result
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
Case Study 2 – Water Heating [Adding Showers & Bath]
Select
- Bath- Mixer Shower – Vented hot
water system + pump
- Click on ‘ADD 2 SELECTED ITEMS’
Case Study 2 – Water Heating [Adding Showers & Bath]
Added:1 Shower – mixer - vented hot water system + pump1 Bath
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
Water Heating [Storage]
Type in storage volume
Select storage type from drop-down menu
Tick box if Hot Water Storage is indoors of in group heating scheme
Water Heating [Storage]
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
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
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
Case Study 2 – Lighting
Library opens with the 5 default bulbs.
Select- Default Halogen LV- Default LED/CFLs
Click on ADD 2 SELECTED ITEMS
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
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
Building – Rooms
Rooms in dwelling:Living RoomHallwayKitchenLandingBathroomBedroom 1Bedroom 2
Can use rooms to add items
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
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
Adding a heat pump to library
Space Heating StandardHeat pump only provides water heatingEco-design data availableHARP data available onlyNo test data available
Adding a heat pump to library
Water Heating StandardHeat pump only provides space heating
HARP data available only
IS EN 16147 data availableNo test data available
Adding a heat pump to library
From Ecodesign data:- Seasonal space heating
efficiency, ɳs, %- Temperature control- TOL
From Ecodesign data:- Water heating
efficiency, ɳwh, %- WTOL
Adding a heat pump to library
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)
Adding a heat pump to library
Enter Heating Capacity (kW) & Coefficient of Performance for Test Condition – High (55°C)
Adding a heat pump to library
Enter Heating Capacity (kW) & Coefficient of Performance for Test Condition – Low (35°C),if available.Continue to input for Medium & Very High if available
Adding a heat pump to library
Enter IS EN 16147 test data
Select if COP or water heating efficiency is availableThis will enable the relevant field for data entry
Adding a heat pump to library
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
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
Adding a heat pump to survey
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
Adding a heat pump to survey
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
Adding a heat pump to survey
When ‘heats water’ is selected in space heating, the heat pump is automatically added as a water heating source in the survey
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