Study on energy savings by using efficient utilites in buildings

India´s Energy consumption rate has increased in 21st century due to its economic growth and steady rise in GDP. The energy demand is increased due to evolution of new electronic gadgets to improve the life style. India´s Energy consumption in residential buildings is about 40 percent of total. There is a 30 to 40 percent of energy saving opportunities existing in this sector with minimum efforts. India framed Energy Conservation Building Code (ECBC) to adopt energy conservation methods in buildings. In this paper, we demonstrate the energy savings with efficient utilities compared to conventional ones through a real time two room building model. Two identical rooms in a building have been considered in which one is equipped with highly efficient utilities whereas the other room with conventional utilities of same capacity. In addition to that, the scheduled controlling mechanism is also implemented in energy efficient room to automate as well as to increase the energy savings further. From the investigations, it is concluded that the visual comfort has been increased by 25 percent and power savings by 57 percent in lighting system of efficient room. Further, it is also observed that 18 percent of energy is saved by using efficient fans. With efficient lighting, fans and air conditioning systems, overall room energy efficiency has been improved by 25 percent. In future, renewable energy sources and advance control strategies will be incorporated to make building net zero energy and green buildings.