Validation of Daylight Analysis Methodology Using Field Measurements and a Simulation Model – A Case Study of Residential Building in Nagpur

In terms of lighting rate and health benefits, using natural daylight in the building saves electricity. Increased daylight availability, on the other hand, could result in thermal ingress in hot and dry climate zones. This could lead to excessive energy use. The aim of this paper is to develop a technique that can be used as a pre-design tool for evaluating daylighting and thermal efficiency of spaces inside buildings that designers can use during the design process. The case study is based on the liveable space of a Nagpur dwelling unit. The simulation model was compared to the methodology, which centred on comparing field measurements. This model has been developed to be used for further evaluation of daylight parameters. Field measurements are taken for both daylight and thermal energy levels. Sensors are used to take field measurements, and Ecotect Analysis 2011 software is used to simulate the results. If the percentage difference (PD) between simulation (S) and field measurements (FM) for a given daylight level is less than 15%, the simulated model is considered reliable for further research and parameter evaluation. The results indicate that the simulated model will be sufficient for designers to test the parameters in relation to the building’s orientation, allowing for the best possible amount of daylight in the building’s interior spaces.

Author (s) Details

Trupti J. Dabe
Department of Architecture and Planning, Visvesvaraya National Institute of Technology, Nagpur, 440010, India.

Alpana R. Dongre
Department of Architecture and Planning, Visvesvaraya National Institute of Technology, Nagpur, 440010, India.

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