Energy Consultancy & Project Management

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New Buildings

The frequent occurrence of problems in the major energy consuming systems in a building can result in energy loss, thus incurring unnecessary operating costs that are detrimental to a company’s bottom-line and image.

The problem often starts at the design stage – design guidelines tend to overestimate the cooling requirements for a building, due to weather uncertainties and safety factors. Many designers only take into consideration the worst case scenario, instead of the most frequently operating conditions for equipment. As a result, building equipment such as the chiller is oversized at the design stage and operates inefficiently in the future.

The problem often starts at the design stage – design guidelines tend to overestimate the cooling requirements for a building, due to weather uncertainties and safety factors. Many designers only take into consideration the worst case scenario, instead of the most frequently operating conditions for equipment. As a result, building equipment such as the chiller is oversized at the design stage and operates inefficiently in the future.

G-Energy advocates the optimization of building design through good engineering practices, such as energy modeling at the design stage to meet energy and environmental performance targets. Highly rated Green Mark buildings, which are required to follow this approach have shown an average improvement of 23% for their chiller plant rooms over a code compliant building (BCA, 2013).  Not only does this reduce the operating costs in the future, it also reduces the initial capital cost of developments. Any recommendations we make at the design stage are coupled with sound financial analysis to ensure its viability.

Our work does not stop at the design stage. G-Energy’s biggest strength is ensuring that the equipment efficiency is pushed to the maximum despite operational requirements. As part of our energy consultancy service, we will carry out further fine tuning works after testing and commissioning to ensure that the best efficiency is achieved. Our proven high performance track records and capability stem from our in-depth knowledge of system operation and understanding of equipment sensitivity under different operating conditions. The Singapore Tokio Marine chiller plant room system efficiency operating at 0.508kW/RT is a testimony of our achievement (Verified by accredited auditor appointed by BCA Singapore).

 

Existing Buildings

Existing buildings often carry a perception of system inefficiencies and high operating expenditures. A variety of issues can often adversely affect the energy use of the major energy consuming systems such as a mismatch between the design intent and operational requirements. However, buildings do not have to be completely redeveloped to become a model of sustainability; building owners today are pursuing more effective measures to carry out energy management.

As a leader of the energy service industry, G-Energy provides comprehensive consultancy services to facilitate the transition of existing buildings into a higher performance building. It is well established that retrofitting buildings for higher energy efficiency can increase the capital value of the property, and most projects can be paid off in three to eight years with the savings achieved (BCA, 2014).

We balance energy savings and financial cost to provide you with the most economical solution.  Acknowledging the importance of providing a holistic solution, we will complement energy optimization with an energy audit to accurately identify any anomalies resulting from operating requirements.

A whole building retrofit will be implemented when an upgrade is deemed to be the prudent approach to improve the energy performance of the building. We will first seek to understand the profile by using diagnostic tools such as an energy audit, and then tailor our design to meet the building’s needs. Only then will we select equipment that is most cost effective and best suited to the building. This unique design approach ensures the best for our clients.

Existing building owners commonly prefer the retrofitting of chillers and other plant room systems, as it is less disruptive to business operations. Moderate improvements to these systems have potentially high savings – a study on 54 retrofitted buildings in 2013 by BCA showed that a chiller plant’s operating efficiency improved by an average of 38%, from 1.05 kW/RT to 0.65 kW/RT (BCA, 2014). The same study showed that the building’s average annual electricity consumption decreased by 16% after the chiller plant and other energy improvement retrofits (BCA, 2014).