تجزیه و تحلیل های اقتصادی روشنایی LED: مطالعه موردی در ساختمان دانشکده UTeM

This paper examines the feasibility of adopting LED lamp in replacing the conventional fluorescent lamp. Analysis and comparison have been carried out on the two lighting systems in terms of electrical and photometrical performance. A case study on UTeM's building has also been presented, which focuses on the economic evaluation. In addition, various lighting energy saving strategies have been proposed. The economic benefits of the respective energy saving measures have been successfully quantified. The study suggests that LED tubes has great potential to replace fluorescent lamps, mainly driven by the cost savings

The recent years are witnessing an increasingly important role assumed by climate change issues in the electrical that energy sector [1-4]. Much of the attentions have been focused on energy efficiency with the common target to reduce greenhouse gases emissions. This has led to the development of various emerging technologies, which are energy efficient and able to reduce energy consumption, such as solar photovoltaic (PV) and light-emitting diode (LED) [5-9]. It is expected utilising such emerging green technology in an early stage will incur much higher upfront investment cost, which may become the barrier for its large-scale implementation. However, the associated costs saving and environmental benefits ofimplementing energy efficient technology over the longer-term period may be significant [10]. Therefore, the life-cycle cost methodology [11], which considers both operational and investment cost over the technical lifetime of equipment should be applied in justifying the expenditure into the implementation of various energy efficient technologies. In light of this, it becomes imperative that the manufacturers should have the relevant tools and analysis framework that are capable of evaluating the costs and benefits of up-taking energy efficient technologies. This is important to ensure that the most cost effective and efficient integration of system design is adopted [12]. In view of the Malaysian context, lighting is one of the major uses of electricity and accounts for approximately 17% of national electricity usage [13]. Thus, the use of higher efficiency lighting systems such as LED offers significant potential for electricity saving, and reduces CO2 emissions. Therefore, this project aims to investigate the efficient integration of -economic of integrating light-emitting diode (LED) for lighting purposes are evaluated on the existing system. The findings are expected to be beneficial to assist management in the decision-making process on the choice of several feasible options, hence provides significant opportunities for industry consultation in relation to establishing a business case for efficient integration of green technologies. This paper examines the feasibility of LED lamp in replacing the conventional fluorescent lamp. Analysis and comparison have been carried out on the two lighting systems in terms of electrical and photometrical performance. A case energy saving strategies have been proposed. Subsequently, the economic benefits of the respective energy saving strategy have been quantified.

The presented study and analysis suggest that LED tube has great potential to replace the conventional fluorescent lamp, mainly driven by the power reduction savings associated with a one-to-one lamp replacement (or retrofit). However, the consumers should be aware of the inherent characteristics of the LED lamps, such as poorer total harmonic distortion performance and the quantity and quality of illumination level on the work plane. The study also shows that the integration of motion or infrared sensors to the existing fluorescent T8 lighting in building can further bring significant economic benefits. Future work is now being planned to replace the existing fluorescent lighting at a dedicated area of the Faculty building. Psychophysical experiment shall also be carried out to evaluate the performance of the both systems in terms of lighting quality, color quality and general perception.