Overview of DEAP Energy Rating of New Domestic Dwellings to IBCI Conference March 2008

Transcription

1 IBCI Conference- Westport March 2008 Overview of DEAP Energy Rating of New Domestic Dwellings to IBCI Conference March 2008 Dr. Michael McLoughlin Department of Civil Engineering Athlone Institute of Technology

2 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 of 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 First Floor Ground Floor

3 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 = 2.65 First Floor Ground Floor

4 Unit 2 Dwelling Dimensions and Notation used in DEAP Number of Stories Used in the determination air change rate. Insulation Cold Roof First Floor Ground Floor Number of Stories =

5 Unit 2 Dwelling Dimensions and Notation used in DEAP Number of Stories Used in the determination air change rate. Insulation Warm Roof First Floor Ground Floor Number of Stories = Is there Fixed Ceiling Access - Therefore -

6 Unit 2 Dwelling Dimensions and Notation used in DEAP Number of Stories Used in the determination air change rate. Unheated Space Insulation Fixed Access Room in roof built into a pitched roof insulated at rafter level Is there Fixed Ceiling Access Therefore Number of Stories -

7 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:

8 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. c a b d a b Plan Ground Floor Area = a x b Plan Ground Floor Area = (a x b) + (c x d)

9 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. Insulation Cold Roof First Floor Ground Floor Elevation Stairwell Plan Ground Floor Area = Ground Floor Volume = First Floor Area First Floor Volume = =

10 Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Internal walls are solid block 100mm thick each with one door 1.2 m wide Built in cupboard accessible from heated area (area 0.75 x 1.75) Cold Roof Elevation Average Story Height = Plan Ground Floor Area =

11 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

12 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

13 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 a Main Dwelling Area b Porch Ground Floor Area = a x b

14 Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Porch Main Dwelling Area Include Not Included If fixed heating is supplied If unheated with a separating door If there is no separating door (heated or not) Porch 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.

15 Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Porch No separating porch door (wither porch is heated or not) Heated porch with separating door include porch with include porch with main dwelling area Mains Heat main dwelling area Porch Porch

16 Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Porch Un-heated porch with separating door DO NOT include porch with main dwelling area Un-heated Porch

17 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 Include Not Included If not separate from the Dwelling If separate from the Dwelling (DEAP Section 3.1.3) (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) (if separate it should be considered as an unheated space????)

18 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.

19 Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Conservatory Thermally separate and resultantly considered an unheated space Main Dwelling Area U-value not greater than that of (wall + 10%) wall 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 of materials that allows transmission of light Unheated or main heat with a separate on/off control

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

21 Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Storage rooms and utility rooms Include Not Included if they are directly accessible from the if they are unheated and occupied area of the dwelling, accessible only via a separate whether heated or not external door Basement Include Not Included only if consisting of both heated and habitable rooms if not habitable and heated

22 Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Garage Include Not Included if heated by main heating system if both thermally separate and not heated by main heating system

23 Unit 2 Dwelling Dimensions and Notation used in DEAP 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. Warm roof space Cold roof space 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. Room in roof c) Room in roof built into a pitched roof insulated at rafter level Ventilated spaces d) Room in roof built into a 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.

24 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).

25 Building Energy Rating of New Dwellings Athlone Institute of Technology

26 2. Open New Assessment 1. Click OK to update HARP database

27 3. Click to Open TGD L

28 4. Click Adobe to minimise

29 5. Click Help to open DEAP Manual

30 7. Click Close to Close Down DEAP Help 8. Please also close TGL L 6. Maximise Tables

31 9. Select Dwelling Type from pull-down menu 11. Yes/No 10. Yes/No 12. Click box for dwelling batches

32 14. Minimise Pin 15. Click next section 13. Click pulldown menu for alternative entry method

33 No house number required for batch assessment ESB Meter Point Reference Number 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

34 Optional, but if used by assessor the ref s. will be adopted by SEI for correspondence relating to that dwelling Mandatory fields in pink If dwelling is not constructed enter approximate date of construction A BER assessor number will be allocated upon registration with SEI

35 16. Click next section White cells are input cells. Grey cells are output values Don t forget helpful prompt in space bar below

36 Nonsensical inputs will prompt corrections Note again a prompt for input requirements

37 17. Click next section Don t forget to scroll down

38 If a pressure test has been carried out Yes, an adjusted air change rate is required 18. Scroll Down

39 If unknown enter 2 Use scrolldown menu to select ventilation type 142

40 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.

41 18. Click next section There are five main heat loss elements and there are also thermal bridging factor to input

42 Entire rows may be deleted using this delete option 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

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

44 Walls: Input a description, U-value of the wall, the net area (excluding any openings) of the wall and any relevant comments. Each wall type is input separately.

45 Doors: Input a description, U-value of the door, the area of the ope and any relevant comments. Each door type is input separately.

46 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 overshading 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

47 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

48 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. Appendix P

49 Once the values for a particular orientation and window type have been entered click add for it to be added as a building element

50 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.

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

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

53 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

54 Check conformity under elemental and overall heat loss methods of Part L Check full conformity details

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56 Overview of DEAP Energy Rating of New Domestic Dwellings Thank you for your Attention Not for redistribution without the express permission of Athlone Institute of Technology