Day Lighting as a tool of Energy Saving in Buildings for Remote Regions
Keywords:Day lighting, lighting simulation, DIALux, building model, efficient energy
There is no doubt that daylight plays a major role in the saving of electrical energy, especially in new buildings. This paper presents a case study of a building in the new Farafra area of Egypt with the use of daylight as a means of energy saving. Environmental factors which include solar radiation and weather conditions, building factors such as building type, windows, surrounding buildings, etc., factors for planning the rooms in the building such as partitioning, furniture arrangement, occupancy rate, etc., all of the above factors have made deleting a very dynamic element. There is no need for any building materials as the proposed site contains building materials required. The analysis of Daylighting presented in all seasons of the year in the selected site. According to simulation results in a winter day as the worst case of an office room, the artificial lighting is not needed from 9:30 AM to 3:00 PM, for a bedroom the artificial lighting is not needed from 8:30 AM to 4:15 PM, for living room the artificial lighting is not needed from 8:30 AM to 4:00 PM. For the kitchen, the artificial lighting is not needed from 8:45 AM to 4:00 PM. Results show that the monthly energy saving is about 83.1 kWh, the adaptive thermal comfort of indoor environment control is actually balanced in terms of occupancy, comfort, and energy efficiency, the window to wall ratio is taken into account during simulations and energy saving due to thermal comfort with no need for an air-conditioning system is about 1350 kWh.
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