Abstract
Abstract Efforts from both spatial and energy engineers were conceived in order to reduce the total running costs of electric consumption in buildings. An often-overlooked energy and money saving opportunity for the built environment lies in lighting. This study investigates the effect of room interior finish on electrical lighting energy consumption. Walls, ceiling, and floor finish, in accordance to light reflectance values, were taken at low reflectance model (LRM), medium reflectance model (MRM), and high reflectance model (HRM). Various occupied spaces were classified in accordance to physical dimensions and capacity in order to cover a wide range of space usage and standard illuminance requirements. It was found that the HRM reduced power consumption in lighting by about 40.62 % compared to the LRM in the case for medium museum halls, with energy saved rating at about 2.32 GWh annually; other occupied spaces show a saving potential between 22.00 % and 40.00 %.
Highlights
While the built environment is a foundational component of civilization, it is still the largest source of pollution cumulatively [1] Energy efficiency, the consumption of a lesser amount of energy to receive the same output in a process, plays a role in alleviating pollution [2]
For the purposes of validating the economic value found in the study independent of geographical location, three examples countries representing three varying price points of electrical energy end-user tariffs were investigated: high cost, as found in Germany, medium cost, as the case of Jordan, and low cost, with the United Kingdom taken as an example
A great saving potential lies in replacing low reflectance model (LRM) with high reflectance model (HRM) and has been found to reach 25 % in medium-sized offices and 27.5 % in large offices, where 1875.50 kWh could be saved, amounting to more than 900.00 kg of carbon dioxide emissions annually
Summary
While the built environment is a foundational component of civilization, it is still the largest source of pollution cumulatively [1] Energy efficiency, the consumption of a lesser amount of energy to receive the same output in a process, plays a role in alleviating pollution [2]. An analysis of the relationship between the reflectance of interior surfaces and the distribution of artificial light was achieved through the SPSS statistical assessment of visual comfort indices of DIALux evo 6.1 simulations; mentioned, the energy saving potential of the findings of the study was not defined [8]. An investigation into the effects of different design strategies on lighting energy use and visual comfort level, using DIALux evo 7.00 to simulate the models studied It proved that surfaces of the highest reflectance provide the best energy use and visual comfort; while an energy saving potential of 45.00 % was achieved by switching from low reflectance surfaces to high reflectance ones, the model in question was specific to a work office [7].
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