Environmental Engineering Reference
In-Depth Information
Air conditioners, cooling EER in W/W
A
B
C
D
E
F
G
>3.2
3.0-3.2
2.8-3.0
2.6-2.8
2.4-2.6
2.2-2.4
<2.2
(a)
Energy
Fridge-Freezer
Manufacturer
Model
More efficient
A
A
B
C
D
E
F
G
Less efficient
Noise
(dB(A) re 1 pW )
Further information is contained in
product brochures
Norm (N 15) May 1990
Refridgerator Label Directive 94/2CC
(b)
FIGURE 7.10
Examples of energy efficiency ratio for products. (a) Energy efficiency ratio classifications
for room air conditioners. (b) Energy efficiency ratio classifications for refrigerators. (From
European Commission Energy Labeling, 2010.)
of mechanical systems are commonly known as MEPS and are also set to
rationalise the energy use in fossil fuel equipment and to reduce the carbon
footprint. Assessment of energy performance of buildings as a whole are
generally use energy rating systems; one example is the Green Pyramids
Rating System (GRPS) [33], Leadership in Energy and Environmental Design
(LEED) [34].
The GPRS Green Pyramid Category Weightings as specified are as follows:
1. Sustainable site, accessibility and ecology
10%
2. Energy efficiency
20%
3. Water utilisation efficiency
30%
4. Materials and resources
10%
