PDF | 8 MB - Australian Building Codes Board

Table J2.4a ENERGY INDEX
Application
Energy
index
option
Australian Building Codes Board Page 3
Deemed-to-Satisfy Provisions
Climate zone
1 2 3 4 5 6 7 8
Glazing in a A 0.067 0.132 0.091 0.086 0.092 0.090 0.059 0.027
Class 3 building
and a Class 9c
Not
aged care B 0.060 0.124 0.078 0.063 0.071 0.061 0.037
applicable
building
Glazing in a A 0.080 0.158 0.109 0.103 0.110 0.108 0.071 0.032
Class 9c aged
Not
care building B 0.072 0.149 0.094 0.076 0.085 0.073 0.044 applicable
Display glazing A 0.180 0.217 0.221 0.227 0.257 0.220 0.170 0.046
in a shop or
Not
showroom B 0.173 0.209 0.208 0.204 0.236 0.191 0.148 applicable
Glazing in other A 0.130 0.181 0.172 0.142 0.175 0.116 0.083 0.023
than, a Class 3
building, a
Class 9c aged
care building or
display glazing in
B
Not
0.123 0.173 0.159 0.113 0.145 0.082 0.058 applicable
a shop or
showroom
Note: Option A applies to all glazing other than where compliance with Option B is
required by Table J1.5a.
(c)
The aggregate air-conditioning energy value must be calculated by adding the airconditioning
energy value through each glazing element in accordance with the
following formula:
A 1 [SHGC 1 (C A xS H1 +C B xS C1 )+C C xU 1 ] + A 2 [SHGC 2 (C A xS H2 +C B xS C2 )+C C xU 2 ] + ...
where—
A 1, 2, etc = the area of each glazing element; and
C A, B and C = the energy constants A, B and C for the specific orientation
from Table J2.4b; and
SHGC 1, 2, etc = the Total System SHGC of each glazing element; and
PUBLIC COMMENT DRAFT
S H1, 2, etc = the heating shading multiplier for each glazing element
obtained from Table J2.4c; and
S C1, 2, etc = the cooling shading multiplier for each glazing element
obtained from Table J2.4d; and
U 1, 2, etc = the Total System U-Value of each glazing element.
(d)
For the purposes of (c)—, where the air-conditioning energy value of a glazing
NCC2014 Volume One J2.4