NCC 2016 Volume Two
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Part 2.6 Energy Efficiency (Verification Methods)
VERIFICATION METHODS
V2.6.1 Application of this Part
The Verification Methods in this Part only apply to—
(a)
a Class 1 building; and
(b)
an enclosed Class 10a building attached to a Class 1 building.
Explanatory information
Explanatory information:
The Verification Methods in this Part are intended to apply to whole Class 1 buildings and to whole Class 1 buildings that incorporate attached and enclosed Class 10a parts, such as attached garages. The Verification Methods are not intended to apply to detached garages or to open carports.
STATE AND TERRITORY VARIATIONS
STATE AND TERRITORY VARIATIONS
V2.6.1 is replaced in Victoria as follows:
V2.6.1 Application of this Part
The Verification Methods in this Part only apply to—
- a new Class 1 building that has either a rainwater tank connected to all sanitary flushing systems, or a solar water heater system, installed in accordance with the Plumbing Regulations 2008; and
- a Class 1 building other than a new Class 1 building; and
- an enclosed Class 10a building attached to a Class 1 building.
V2.6.2 * * * * *
Note
This clause has deliberately been left blank.
V2.6.2.1 * * * * *
Note
This clause has deliberately been left blank.
V2.6.2.2 Verification using a reference building
(a)
Compliance with P2.6.1 is verified when a proposed building, compared with a reference building, has—
(i)
in climate zones 1 and 2, a cooling load equal to or less than that of the reference building; or
(ii)
in climate zones 7 and 8, a heating load equal to or less than that of the reference building; or
(iii)
in climate zones 3, 4, 5 and 6, a heating load and a cooling load equal to or less than that of the reference building.
(b)
The heating load and cooling load for the proposed building and the reference building must be determined using the same—
(i)
calculation method; and
(ii)
location specific data, including that of climate and topography appropriate to the location where the proposed building is to be constructed if the data is available, or the nearest location with similar climatic conditions in the same climate zone for which the data is available; and
(iii)
impact of adjoining structures and features; and
(iv)
soil conditions; and
(v)
orientation; and
(vi)
floor plan, including the location of glazing; and
(vii)
ceiling height and number of storeys; and
(viii)
solar absorptance of external surfaces; and
(ix)
roof pitch, roof cladding and roof lights; and
(x)
separating walls ; and
(xi)
external non-glazed doors; and
(xii)
intermediate floors; and
(xiii)
floor and floor coverings; and
(xiv)
internal zones; and
(xv)
internal heat gains including people and appliances.
(c)
The calculation method used must be capable of assessing the heating load and cooling load by modelling—
(i)
the building fabric; and
(ii)
glazing and shading; and
(iii)
air infiltration and ventilation; and
(iv)
the function and use of the building including zoning, hours of occupation, hours of heating and cooling availability and internal heat gains; and
(v)
space temperature settings in the range 20ºC to 21ºC for heating and 25ºC to 28ºC for cooling; and
(vi)
relevant built-environment and topographical features; and
(vii)
the sensible heat component of the cooling load and heating load.
(d)
Climatic data employed in the calculation method must be based on hourly recorded values and be representative of a typical year for the proposed location.
(e)
The reference building must be modelled using the Deemed-to-Satisfy Provisions of Part 3.12 in accordance with 3.12.0(a)(ii).
Explanatory information
Explanatory information:
- In (c)(iv), the number of hours per day for which heating and cooling is available would be expected to lie between 8 and 17, with values outside this range unlikely in other than exceptional circumstances.
- Suitable climatic data including dry-bulb temperature, direct and diffuse solar radiation, wind speed, wind direction and cloud cover can be obtained from the Australian national climate database.