INVESTIGATIONS ON INTRODUCING OF LED BASED LIGHTING SYSTEM IN DELHI METRO

Abstract

Illumination is an important factor for mental and physical well-being, mood elevation, safety and security of a passenger using the Metro system for his transportation need. There are many factors that need to be considered carefully while designing lighting for Metro Systems. They are Safety & Health, Appearance & comfort, Energy and Cost Effectiveness. Lighting system in Metro Rail Systems is unlike other applications as there are various different type of application areas viz. Stations (Underground & Elevated), Passenger Areas, Non-Passenger Areas, Train Depots etc. Thus, it becomes imperative that Lighting Design is carried out carefully considering factors such as Safety & Health, Performance, Appearance & Comfort and Energy & Cost Effectiveness. Metro System typically has various types of Application Areas. These areas can be broadly divided into two categories viz. Public & Non-Public Areas. Public Areas are Passenger areas such as Platform, Concourse, and Entrances/Exits etc. Lighting in these areas has to be designed keeping in mind the comfort of the passengers as well as energy saving. DMRC has been keen to reduce its energy consumption. At equipment level, high efficient equipments & their accessories are selected but one of major concerns where energy consumption is significant and saving can be done is ‘Lighting’ At a typical underground station where about 19 Hrs of duration, Lighting system is ‘ON’ which if regulated, can able to save lots of energy. LED lighting due to its spurious advantages of high efficiency, color rendering index, color temperature and longer life, Delhi Metro introduced the LED based lighting system. Hence, there comes need to review the lighting needs of DMRC and introduce some better alternatives. Thus, introducing of LED based Lighting system is a techno-commercial solution in order to fulfill DMRC specific requirements with advantage of Energy Saving.