Faculty Publications
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Item Life cycle energy analysis of a metro station building envelope through computer based simulation(Elsevier Ltd, 2018) Aneesh, N.R.; Shivaprasad, K.N.; Das, B.B.This study focuses on the energy auditing of a metro terminal station building envelope which is located at a major city in south India. Embodied energy was calculated using the unit embodied energy values and by quantifying major energy consuming material used for the construction of a metro terminal station building. e-Quest, the energy simulation software was used for modelling the terminal station building and thereby calculated the yearly consumption of operational energy. Terminal station building is modelled with a detailed description of the building in e-Quest, which is being analysed with lighting, equipment's, thermostat settings, hourly scheduling of occupants and climatic data as the inputs to the model. In assessing the life cycle energy of the terminal station building, recurring energy and transportation energy were also calculated. In addition, this study discusses the comparative analysis on operational energy consumption for the same metro station model for three different climatic regions across India. Further, the present study on life cycle energy is compared with the life cycle energies of different types of buildings obtained from the literature, for an understanding of the energy usage demand per year per capita, between a public utility building, a commercial building and different types of residential buildings. © 2018 Elsevier LtdItem Comparative Study of Energy Efficiency Criteria for IGBC and GRIHA Systems Using Simulation(Springer, 2023) Rakesh, P.; Harisankar, R.; Das, B.B.Energy efficiency criteria are important in Green Building Rating (GBR) systems, and the requirements vary depending on the GBR system. A comparison study is conducted to distinguish between two major GBR systems used in India: Indian Green Building Council Green Homes (IGBC GH) and Green Rating for Integrated Habitat Assessment (GRIHA). The energy simulation software eQuest was used to forecast annual energy demand for a case study multi-family residential building with various design scenarios. Various design combinations for the roof envelope, wall envelope, and HVAC efficiency were chosen, and the possibilities of meeting the energy efficiency criteria of the two GBR systems were discussed. It was discovered that an improvement made based on envelope condition, the efficiency of the HVAC system considered in this study, and assigning renewable energy gives higher energy performance under IGBC Green Homes, with the possibility of achieving full credit points, but the combinations discussed did not give the full credit points for GRIHA. GRIHA, in particular, requires a significant reduction in HVAC load to receive full credit. GRIHA requires more renewable energy allocation than IGBC GH because renewable energy for achieving credit points is a percentage of HVAC, lighting, and domestic hot water consumption, whereas IGBC GH is a percentage of common area lighting consumption. © 2022, The Institution of Engineers (India).