A. Why is energy simulation important?
Generation of energy means to burn fossil fuel resources and emit carbon dioxide and other
Being a socially responsible designer, engineer or developer, it is recommended that energy-saving goals be set for
developments. With the aid of energy modelling software, it is possible to predict energy consumption, costs of operation,
and compare the energy saving performance with benchmark buildings, in order to optimise building designs.
B. When to conduct energy simulation?
Whenever you want to:
• Predict the monthly energy consumption and costs
• Predict the annual energy cost
• Predict annual carbon emissions
• Compare and contrast different efficiency options
• Determine life cycle payback on various options
TECHNICAL NOTE
What software is available?
The website of U.S. Department of Energy provides a directory containing information on 403 building
energy simulation tools. eQuest, a DOE-2 based programme, is one of the easiest options for energy
simulation and free of charge. Energy Plus, another freeware, with more advanced modelling capabilities,
is suitable for experts in energy simulation.
Read more at:
Building energy software tools directory
U.S. Department of Energy. Energy efficiency and renewable energy. Building Technologies Office. (2013).
Building energy software tools directory. Retrieved 9 April 2013, from
/
5.8
Energy simulation and evaluation
5.8.1 Energy simulation for new buildings
Energy simulation is also known as “energy modelling” or “energy analysis”, which is the virtual or computerised
simulation of a building or complex to predict annual energy consumption, utility bills and life cycle costs of various energy
related items, including:
1
Air conditioning,
heating and
ventilation
2
Lighting
3
Hot water
service
4
Lifts and
escalators
5
Small power
and plug load
6
Renewable
energy
installation
5
Energy efficient building systems for shopping malls and shop spaces
5.8
Technologies of energy simulation and evaluation
140 Hong Kong Green Shop Guide
