STATE-OF-THE-ART

GE provides wide range of green consultancy. Apart from the basic facilitation scope, we are able to offer the following State-Of-The-Art services to enhance the green building design to a higher accuracy, to identify and improve the building energy efficiency prior to construction.

A)   In-House Building Energy and Cost Analysis Tool (BECAT)

BECAT is an in-house developed building energy analysis tool in conjunction with the cost and payback period analysis. It is a very useful and comprehensive static calculation tool used to estimate the detail breakdown of annual energy consumption, the heat load calculation, the initial investment and the payback period comparing between two different designed buildings.

B)   Building Thermal and Energy Simulation and Analysis

Building energy simulation and analysis is one of the major contributions and requirements for green building design. The yearly energy consumption of the green building constitutes the most points for the Green Building Index (GBI) certification scheme.

Thermal modeling is conducted to estimate thermal conditions within internal occupied spaces. The energy simulation and analysis is the initial tool to study on the investment cost versus the savings from the long term operation cost.

Figures below show some modeling and examples for energy simulation and analysis of an educational building.

C)   CFD Simulation and Analysis

Computational Fluid Dynamics (CFD) is the analysis of systems involving fluid flow, heat transfer and associated phenomena such as chemical reactions, particles distribution and etcetera by means of computer-based simulation.

In building services, CFD is widely used for Heating, Ventilating and Air-Conditioning (HVAC) system and Performance Based Fire Engineering system. Examples for HVAC system are natural ventilation and large air-conditioning space such as atrium where the buoyancy effect and long distance air distribution is difficult to design base on conventional system. Examples for performance based fire engineering systems are jet fan system and large atrium which acts as smoke reservoir.

Figures below show some CFD simulation result for an Operating Room on the air and room temperature distributions.

Figures below show CFD simulation result for a ballroom with high ceiling on the air movement and room temperature distributions. The supply air on the low wall side requires less air to cool the space.

D)   Daylighting and Artificial Lighting Simulation and Analysis

Daylighting and Artificial Ligthing simulation and analysis is one of the major requirements for green building design. Sufficient lighting level at workspace is important for internal environmental quality and productivity. Harvesting daylight helps to reduce the energy consumption on lighting, while daylighting simulation helps to identify the electrical lighting circuiting design.

In Malaysia, daylighting factor of 1 - 3% is good enough for building occupants. Direct sunlight penetration and luminance level above 2,000 lux will cause glare and discomfort to occupants. Daylighting simulation helps to tackle all these problems during design stage prior to construction.

Figures below show some simulations and examples for daylighting and artificial lighting simulation and analysis.

E)   Energy Auditing

Energy Auditing is a very important verification process to make sure the installed systems are working as per design and required performance especially for air-conditioning system where air-conditioning system consumes around 60% of the overall energy cost. Energy auditing helps to reduce the energy cost especially in reducing the maximum demand. Energy auditing also carried out to identify areas that are possible in reducing the energy consumption. A good monitored system ensures long term savings to the clients.

Base on the experience we gained from case study on energy audition, our design is continuously improving towards energy efficient design.

Figures below show some energy profiles and performance of a chiller system for Tropicana City Mall.

F)   3-Dimensional Modeling for Coordination of M&E Services

3-dimension modeling for coordination of M&E services has long been used in Oil and Gas industry to minimize clashes of services that cause wastage of materials and time, where the transportation of materials from on-shore to off-shore is very costly.

In building services, besides minimizing wastage of materials and time, due to the higher demand for better aesthetic view for exposed M&E services in non-ceiling area such as car parking zones, 3-dimension modeling has slowly gained popularity.

Figures below show some 3-D modeling for coordinated M&E services in a car parking area.  

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