Civil Engineering / Environmental / Architecture / Planning Session:

Title:            Comparative study on day lighting & energy modelling for conventional & green building
Authors:       Shriharsha, Dhanraj M. R.
Abstract:     A green building is a building which consumes less energy, less water and it includes proper waste management system in such a way that it utilizes maximum natural resources without affecting the future needs. The energy consumption in a conventional building varies based on the person’s metabolic condition, the circulation of fresh air and the intensity of light entering to the building. The absence of fresh air circulation and lack of natural light will lead to intense power consumption in the building. The methodology used here is basically on the working of the three software viz., VELUX, DESIGN BUILDER and EQUEST. The VELUX software is meant for understanding the building day light factor; how the building ventilations are provided and to what extent the building is consuming the natural light through these ventilations. A simulation shall be drawn to check the lux values inside the building and it shall be done on the basis of considering different colors and designing the building to frame the results. DESIGN BUILDER is the energy simulation tool to analyze the building as per the latitude and longitude of the building. So the results are based on the weather and climatic conditions of the building topography, thermal comfort in the building, metabolic condition and materials used. EQUEST is the software used for the final analysis of the modeled energy buildings to determine the consumption of the energy and also the annual savings based on the model prepared in the software. The main area of work is on how to reduce the energy consumption in the building using the natural day light. A study on the modeled building by its appropriate orientation and a cost wise comparison between a green and a conventional building are done here. The study is conducted in one of the site located at Mangalore i.e. Indian Green Building Council (IGBC) pre certified site and Gurupur, (Mangalore) island site for conventional building. The day light in the conventional building is 5% more than the green building. Energy consumption is 8% less than the green building. The comfort level is 2% morethan the green building and overall improvement in conventional building is 2% more than the green building.The provision ofthe alternative economical materials for wall construction has a significant impact on cost of construction. The study was able to understand the maintenance & functional life of Hollow bricks and information are obtained from users (Occupiers, owners, developers) in Mangalore. The uniqueness, innovation, aesthetic, speed of construction is the factors that determine the performance of its life.

Pages:          193-195

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