Overview of DEAP Energy Rating of New Domestic Dwellings to IBCI - - PowerPoint PPT Presentation

Overview of DEAP Energy Rating

• f New Domestic Dwellings to

IBCI Conference March 2008

• Dr. Michael McLoughlin

Department of Civil Engineering Athlone Institute of Technology IBCI Conference- Westport March 2008

Unit 2 Dwelling Dimensions and Notation used in DEAP

Storey height is the total height between the ceiling surface of a given storey and the ceiling surface

• f the storey below. For a single storey dwelling, or the lowest floor of a dwelling with

more than one storey, the measurement should be from floor surface to ceiling surface. 2.4 2.4 0.25 0.25

Ground Floor First Floor

Unit 2 Dwelling Dimensions and Notation used in DEAP

Storey height Used in the determination of the volume of the dwelling which is applied in the ventilation loss worksheet 2.4 2.4 + 0.25 = 2.65 0.25 0.25

Ground Floor First Floor

Unit 2 Dwelling Dimensions and Notation used in DEAP

Number of Stories Used in the determination air change rate. 2.4 Insulation 0.25 0.25

Ground Floor First Floor

Number of Stories = 2.65 Cold Roof

Unit 2 Dwelling Dimensions and Notation used in DEAP

Number of Stories Used in the determination air change rate. 2.4 Insulation 0.25 0.25

Ground Floor First Floor

Number of Stories = Is there Fixed Ceiling Access - Therefore - 2.65 Warm Roof

Unit 2 Dwelling Dimensions and Notation used in DEAP

Number of Stories Used in the determination air change rate. Insulation

Unheated Space

Room in roof built into a pitched roof insulated at rafter level Is there Fixed Ceiling Access - Therefore Number of Stories - Fixed Access

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

• Dimensions refer to the inner surfaces of the elements bounding the dwelling. Thus

floor dimensions are obtained by measuring between the inner surfaces of the external or party walls, disregarding the presence of any internal walls.

• Floor area should be measured as the actual floor area, i.e. if the height of a room

extends to two storeys or more only the actual accessible floor area should be

• entered. However, as an exception to this rule in the case of stairs, the floor area

should be measured as if there were no stairs but a floor in their place at each level.

• In general, rooms and other spaces, such as built-in cupboards, should be included in

the calculation of the floor area where these are directly accessible from the occupied area of the dwelling. However unheated spaces clearly divided from the dwelling should not be included. The following provides specific guidance:

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area Used in the determination of the volume of the dwelling which is applied in the ventilation loss worksheet. Ground Floor Area = a x b Ground Floor Area = (a x b) + (c x d) a d c b a b

Plan Plan

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area Used in the determination of the volume of the dwelling which is applied in the ventilation loss worksheet. 2.4 Insulation 0.25 0.25

Ground Floor First Floor

Ground Floor Area = Ground Floor Volume = First Floor Area = First Floor Volume = 2.4 Cold Roof 8.0 10.0 Elevation Plan

Stairwell

3.0 1.5

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area Average Story Height = Ground Floor Area = 9.25 4 3.25 8

Plan

2.65 0.25 Cold Roof Elevation Built in cupboard accessible from heated area (area 0.75 x 1.75) Internal walls are solid block 100mm thick each with one door 1.2 m wide

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area In General: Include in floor area – all parts of the dwelling directly accessible from within the heated area e.g.

• Cupboards
• Storage rooms

Not included in floor area – all parts of the dwelling not accessed form within the heated area e.g.

• Sheds
• Garages

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area Are the following included as part of the floor area?

• Poarch
• Conservatory
• Storage room and utility room
• Basement
• Garage
• Attic

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area Integral Porch or Entrance Lobby (within the building line) Include area in all cases

Main Dwelling Area Porch

Ground Floor Area = a x b a b

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Porch

If there is no separating door (heated or not) If unheated with a separating door

In this context ‘porch’ means an addition protruding from the line of the external wall of the dwelling; an entrance lobby that is within such line should be included.

If fixed heating is supplied Not Included Include

Porch Main Dwelling Area

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Porch

Porch Heated porch with separating door include porch with main dwelling area Porch No separating porch door (wither porch is heated or not) include porch with main dwelling area Mains Heat

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Porch

Porch Un-heated porch with separating door DO NOT include porch with main dwelling area Un-heated

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Conservatory

A conservatory is defined as an extension attached to a dwelling which has not less than three-quarters of the area of its roof and one half of the area of its external walls made of material that allows the transmission of light If separate from the Dwelling (DEAP Section 3.1.3)

(if separate it should be considered as

an unheated space ????)

If not separate from the Dwelling

(if not separate it should be considered as an integral part of the dwelling. Hence, glazed areas should be entered as glazed components DEAP 3.1.4)

Not Included Include

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Conservatory

A conservatory may be treated as an unheated space if it is thermally separated from the main dwelling. To be considered thermally separated, it must fulfill both of the following:

• The walls, floors, windows and doors between it and the main dwelling

must have U-values not more than 10% greater than corresponding exposed elements, and,

• It must be unheated or, if provided with a heating facility, must have

provision for automatic temperature and on-off control independent of the heating provision in the main dwelling.

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Conservatory

Thermally separate and resultantly considered an unheated space

Main Dwelling Area

To be classified a conservatory it must have: not less than ¾ of the area of its roof and ½ of the area of its external walls

• f materials that allows transmission
• f light

Unheated or main heat with a separate on/off control U-value not greater than that of (wall + 10%) wall

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Conservatory

Integral to main dwelling area and resultantly area amalgamated with main dwelling area. Glazed area considered for heat loss and solar gain:

Main Dwelling Area

To be classified a conservatory it must have: not less than ¾ of the area of its roof and ½ of the area of its external walls

• f materials that allows transmission
• f light

Heated with main heat system with no separate on/off control U-value not greater than that of (wall + 10%) wall

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Storage rooms and utility rooms Basement

if they are unheated and accessible only via a separate external door if they are directly accessible from the

• ccupied area of the dwelling,

whether heated or not Not Included Include if not habitable and heated

• nly if consisting of both

heated and habitable rooms Not Included Include

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Garage

if both thermally separate and not heated by main heating system if heated by main heating system Not Included Include

Unit 2 Dwelling Dimensions and Notation used in DEAP

Cold roof space Ventilated spaces

Room in roof

Warm roof space

1.pitched roof insulated either at ceiling level or at rafter level, with roof space converted into habitable space, shown respectively in c) and d) below. a) Insulation at ceiling level b) Insulation at rafter level In the cases of a) and b) the roof space should not be entered as a separate storey. c) Room in roof built into a d) Room in roof built into a pitched roof insulated at rafter level pitched roof insulated at ceiling level In the cases of c) and d) the floor area of the roof space that is converted into habitable space should be entered as a separate storey.

Unit 2 Dwelling Dimensions and Notation used in DEAP

Floor Area

Additional information

• When porches or garages are not included in floor area, the door and part of the

wall between the dwelling and these structures are adjacent to an unheated space and their U-values should be calculated accordingly (see section 3.3).

• In buildings incorporating flats, if corridors and stairwells are heated, walls between

the flat and heated corridors/stairwells should be treated as non-heat loss walls (i.e. assuming the same temperature on either side of the walls). Otherwise these walls are treated as elements adjacent to an unheated space and their U-values should be calculated accordingly (see section 3.3).

• No special treatment should be given in cases where a central heating boiler is

located in an unheated garage (i.e. the floor area used for the assessment should be the same as if the boiler were in the kitchen or a utility room).

Building Energy Rating of New Dwellings

Athlone Institute of Technology

• 1. Click OK

to update HARP database

• 2. Open New

Assessment

• 3. Click to Open

TGD L

• 4. Click Adobe

to minimise

• 5. Click Help to
• pen DEAP

Manual

• 6. Maximise

Tables

• 7. Click Close to

Close Down DEAP Help

• 8. Please also

close TGL L

• 9. Select

Dwelling Type from pull-down menu

• 10. Yes/No
• 11. Yes/No
• 12. Click box

for dwelling batches

• 13. Click pull-

down menu for alternative entry method

• 14. Minimise Pin
• 15. Click next

section

ESB Meter Point Reference Number No house number required for batch assessment Required if a previous BER assessment has been carried out on the dwelling

Help bar appears to assist with input requirements in certain input boxes Help bar appears to assist with input requirements in certain input boxes

Mandatory fields in pink

Optional, but if used by assessor the ref’s. will be adopted by SEI for correspondence relating to that dwelling If dwelling is not constructed enter approximate date of construction

A BER assessor number will be allocated upon registration with SEI

• 16. Click next

section

White cells are input

• cells. Grey cells are
• utput values

Don’t forget helpful prompt in space bar below

• 16. Click next

section

Nonsensical inputs will prompt corrections

Note again a prompt for input requirements

• 17. Click next

section Don’t forget to scroll down

• 17. Click next

section

If a pressure test has been carried

• ut ‘Yes’, an

adjusted air change rate is required

• 18. Scroll

Down

If unknown enter 2 Use scroll- down menu to select ventilation type

142

Where ventilation is motorised (other than natural and positive input) include Manufacturers declared losses in accordance with Appendix Q. Manufacturers details is available from SAP (DEAP ventilation products database is under development.

• 18. Click next

section

There are five main heat loss elements and there are also thermal bridging factor to input

Floors: Input a description, U-value of the floor, the area of the floor and any relevant comments. Each floor is input separately. E.g. ground floor and first floor

Entire rows may be deleted using this delete option

Roofs: Input a description, U-value of the roof, the area of the roof and any relevant comments. Each roof type is input separately.

Walls: Input a description, U-value

• f the wall, the net area (excluding

any openings) of the wall and any relevant comments. Each wall type is input separately.

Doors: Input a description, U-value

• f the door, the area of the ope

and any relevant comments. Each door type is input separately.

Appendix P

Enter a glazing description, chose a glazing type from the pull-down menu, chose a frame type from the pull down menu, chose a gap size from the pull-down menu, chose the

• vershading from the pull down menu, chose

the orientation from the pull-down menu, enter the area of the ope, click roof window box only if applicable (horizontal window).

Appendix P

Manufacturers declared values may be input. However the manufacturer and model must also be included if this box is ticked. If unclicked the default values from table 6a and 6b are used.

Appendix P

This section is optional and is used to estimate the summer overheating. For no overhang enter normal with a depth to height ration of 0.

Once the values for a particular

• rientation and window type have

been entered click add for it to be added as a building element

Use the copy command to copy the elements if similar to a previous input. Then make any necessary modifications by double clicking on the copied row to highlight is. Once the row is highlighted make the necessary changes and use the update button to update the new window element.

For example the orientation and area of the windows in this input were updated as shown

Scroll down and click to view full details View total glazed area

Enter the thermal bridging factor in accordance with section 3.4, appendix K. Dwelling to Part L = 0.11 Dwellings not to Part L = 0.15

Check conformity under elemental and

• verall heat loss methods of Part L

Check full conformity details

Overview of DEAP Energy Rating

• f New Domestic Dwellings

Thank you for your Attention

• Not for redistribution without the express

permission of Athlone Institute of Technology