The Effect Of Daylight And Control On Artificial Light And Air Conditioning Systems

1830 WordsJan 13, 20158 Pages
ABSTRACT: Availability of daylight in a building not only improves the well-being of an individual but also plays an important role in reducing our dependence on artificial light and the operational cost of a building. Daylight if not controlled could cause the major problem of solar heat gain in a building and thus causing an increase in the air-conditioning cost of the building especially in warm climates. Offices being one of the building categories that need to be well lit regardless of their size and location, it is important to optimize the daylight and control the heat gain in an office building. This paper discusses the different daylight strategies to achieve this. 1. INTRODUCTION “A room is not a room without natural light.” -Louis I Khan Buildings in the residential, commercial and public sectors are responsible for 20-40% of the total energy consumption in the world [Pérez-Lombard, L. Ortiz, J. and Pout, C., (2008)]. Around 70% of this consumption is spent on artificial light and air-conditioning systems [Energy Information Administration, (2008)]. Especially in office buildings as shown in Fig.1.1 [Guide to Best Practice Maintenance & Operation of HVAC Systems for Energy Efficiency (January 2012)] that the energy consumption due to HVAC is 39% and lighting is 25%. In countries having warm climates like India require cooling of buildings for almost 6-8 months to provide thermal comfort to the occupants. The energy

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