Exemplary Weather and Energy (EWE) Index August 2022

The Exemplary Real Time Year weather files (RTYs), current Reference Meteorological Year files (RMYs) and Ersatz Future Meteorological Years (EFMYs) used for these monthly simulations are available for purchase to allow clients to simulate their own designs for energy budgeting and monitoring rather than rely on analogy with the performance of these archetypical buildings and systems.

Archetypical buildings and systems

3-storey office

10-storey office

Supermarket

5kW domestic PV system


ADELAIDE

Weather Index (monthly means)

Adelaide had a considerably more humid August, with temperatures comparable to the long-term average. The GHI was lower, and the wind speeds were comparable to the average.

Energy Index (%)

The solar PV simulation output results were 17% lower than the historic average. For the 10-storey building, heating consumption was 11% lower in the south-facing and west-facing zones, while the east-facing and north-facing zones saw a 3% higher heating loads. On the other hand, the cooling consumption was roughly 40% lower for the east-facing and west-facing zones, while cooling in the north-facing zone was 29% lower and in the south-facing zone was 50% lower.


BRISBANE

Weather Index (monthly means)

Brisbane had a more humid and slightly warmer August compared to the long-term average. The GHI was lower, and the wind speeds were also lower, particularly in the afternoon.

Energy Index (%)

The solar PV simulation output results were 12 % lower, and all building archetypes saw decreased heating and cooling consumption. While cooling peak loads were mostly comparable to the historic average for the 3-storey office, the 10-storey office and the supermarket saw, respectively, a 7% and 1% increase. On the other hand, heating peak loads saw a 19% increase for both the office archetypes and a 11% decrease for the supermarket.


CANBERRA

Weather Index (monthly means)

Canberra experienced a significant more humid and slightly warmer August compared to the long-term average. The GHI was lower, and the wind speeds were comparable to average.

Energy Index (%)

The solar PV simulation output results were 14 % lower than average. While cooling peak loads were mostly comparable to the historic average for the 10-storey office and the supermarket, the 3-storey office saw a 3% decrease. On the other hand, heating peak loads saw a 2% decrease for both the office archetypes and a 4% decrease for the supermarket.


DARWIN

Weather Index (monthly means)

Darwin experienced a slightly warmed and more humid August compared to the long-term average, with higher wind speeds and lower GHI.

Energy Index (%)

Compared to the long-term average, the solar PV simulation output results were 5.8% lower and the office building archetypes had higher cooling consumption. Cooling peak loads were up 10% for the 3-storey office and the 10-storey office buildings, and 2% higher for the supermarket archetype.


HOBART

Weather Index (monthly means)

Hobart experienced a more humid and slightly warmer August compared to the long-term average. The wind speeds were comparable and the GHI was lower, leading to a 19 % decrease in the solar PV simulation output results.

Energy Index (%)

All the building archetypes had higher heating consumptions and lower cooling requirements compared to the long-term average. The west-facing and south-facing zones of the 10-storey building saw, respectively, 9% and 12% higher heating consumption, while the north-facing and east-facing zones saw, respectively, 35% and 24% more heating consumption. On the other hand, the west-facing, north-facing and east-facing zones saw, respectively, 19%, 29% and 22% lower cooling consumptions, while the south-facing zone had 71% increased cooling consumption.


MELBOURNE

Weather Index (monthly means)

Melbourne had a slightly warmer and more humid August compared to the long-term average, with comparable wind speeds and lower GHI.

Energy Index (%)

The solar PV simulation output results were 7.1 % lower and the building archetypes had lower cooling and heating requirements compared to the long-term average. While cooling peak loads were mostly comparable to the historic average for the 10-storey office and the supermarket, the 3-storey office saw a 7% increase. On the other hand, heating peak loads saw a 32% increase for both the office archetypes and a 10% increase for the supermarket.


PERTH

Weather Index (monthly means)

Perth experienced a slightly cold and less humid August compared to the long-term average, with comparable wind speeds and lower GHI.

Energy Index (%)

The solar PV simulation output results were 8.6% higher. While cooling peak loads were up 14% for the 3-storey and the 10-storey buildings, the heating peak loads were up 11% for the 3-storey building and 18% for the 10-storey building, while the supermarket saw a 5% decrease.


SYDNEY

Weather Index (monthly means)

Sydney experienced a significant more humid and slightly warmer weather in August. The GHI was significantly lower, which led to a 23% decrease in the solar PV simulations output, while the wind speeds were comparable to average.

Energy Index (%)

All three building archetypes experienced higher heating consumption. In particular, in the 10-storey building, heating consumption was 23 higher in the west-facing and south-facing zones, while the east-facing and north-facing zones saw, respectively, a 65% and a 10% increase. Cooling peak loads were up 4% for the 3-storey office and the 10-storey office, while the supermarket experienced a 2% decrease. On the other hand heating peak loads were down, respectively, 17% and 15% for the 3-storey and 10-storey building, and 5% lower for the supermarket.

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