Pilot project on energy efficient lighting for households 1993-1995 : report on phase 1 October 1993 - March 1994

Abstract

The cost of power generation in Sri Lanka is continuously increasing as the low cost hydro power resources are being exhausted. It thus becomes increasingly important to be more efficient in the utilisation of electricity. It is with this in mind that the pilot project has been commenced. However, the study has been limited to energy efficiency in lighting, and in particular to that in households. Energy efficiency in lighting can be achieved primarily by the use of discharge lighting. For outdoor lighting, where colour differentiation is not very important, sodium vapour lamps and mercury vapour lamps are highly efficient. On the other hand, for industrial and commercial lighting, the standard linear fluorescent tubes give the best efficacy at low cost. However for some domestic applications, the linear (2 ft or 4 ft) fluorescent tubes are not aesthetically pleasing. Also the lamps should be easily replaceable by the occupants themselves without needing the services of an electrician or other skilled person. Thus the lamp so chosen must have the standard incandescent socket (bayonet cap in Sri Lanka). Also it must be compact and not much larger than the standard incandescent lamp it has to replace, so that it can directly replace the incandescent lamp in the same fitting without needing any changes. Thus the study has been limited to the compact fluorescent lamp (CFL).