| Humans need to be exposed to a certain amount of light, and overexposure to light may lead to various disorders in bodies. The human circadian system is considered rarely in designing the lighting for a place. Usually the main issues of vision, glare, illuminance and luminance are considered. Whether the provided lighting system is useful for the human bodies using them or not is also one of the most important points that every lighting designer should consider. Every single space is different than another, and hence every space should have its unique lighting. The research was helpful to the lighting designers in determining whether the lighting designed by them for a place is going to help the humans using that space or its going to affect them in an opposite negative manner. The main objective was to design an easily accessible workflow for the lighting designers to evaluate their design in terms of circadian system. Using this workflow, three different configurations of lighting design with four different light sources were evaluated and compared with each other to give outputs in relation with the circadian system. There is currently limited guidance to help the lighting designers to judge their design and find its suitable level for the humans in that space. So, the thesis was like a stepping stone in this positive direction.;A test model was created as a replica of commercial office for the research. The test model was linked with various software programs like Rhino, Grasshopper and Ladybug + Honeybee to carry out different simulations. Three different lighting design test cases and four different types of light sources were considered during the research. The EML (Equivalent Melanopic Lux) and LPD (Lighting Power Density) values were collected for each type of design test case and each type of lighting source. Workflow was developed for the lighting designers to evaluate their design in relation to its effect on the circadian system of the occupants in terms of the EML values. The comparison between the design configurations and light sources, helped to determine the better among them for the circadian system and for the energy consumption. The workflow and data collected, led in the formation of an easy accessible tool for the lighting designers. The newly created calculator could evaluate a particular design to verify whether the design would disturb the circadian pattern or would enhance and maintain the circadian cycle along with its energy efficiency. |
