A Study and Planning of Electrical Energy Conservation in the Building: A Case Study of Rajasudasambhava 60 Building

The Energy Conservation Promotion Act 1992 and Energy Conservation Promotion Act 2007 (Version 2) promote the country to produce and use energies effectively and economically. In addition, they encourage people to make use of more alternative energies. In section 7, it is mentioned that energy conservation in factories can be done in one of the following ways: (5) improving electricity usage by correcting power factor, reducing peak electricity demand of the system, using electrical equipment which is suitable for the load, (6) the use of high-efficiency machinery or equipment including the operational system which controls them, the use of materials which help to conserve energies. In accordance with the Energy Conservation Promotion Act 1992 manual (amended in 2007), a building needs to be constructed with the standards, criteria and methods prescribed in the Ministerial Regulations. In Rajasudasambhava 60 Building, the sizes of each classroom and office are different, therefore the control system of electricity usage in each room is different, the number of lamps in each room is different, and the electrical energy which is consumed by the lamps in each room is different. In the present, energy conservation technology is diverse and it is easy to choose the right technology and electrical equipment which match the needs of consumers. Moreover, the use of electricity in the system becomes less and more economical. The researchers have created this project to study efficiency in each room. From the study, it is found that the electricity usage of the building is increasing every year. In 2019, the electricity usage increases from the year 2018 by 10.09% and the electricity usage in 2018 increases from 2017 by 1.49%. The difference of percentage of each year is quite obvious. Before the project had been undergone, most of the lamps are on the surface because the ceiling of the building has no cover, showing the pipes and conduits for the sake of maintenance. The lamps have the reflector which is made of shiny aluminium. Most of the lamp covers are acrylic and the power is 14 watts and 28 watts. The ballast is a low-loss type. The power consumption is 6 watts. Each lamp is turned on 301 days per year and 6 hours per day, approximately from 9.00-16.00 hrs. The average illumination is 1260 lux. The calculated illumination power is 59.6 watts per square meter in average. The process of this project is as followed: 1) using Dialux program to simulate the lighting system of 10 rooms. 2) experimenting by reducing energy consumption by two methods which are using natural light and changing electric lamps. The result is, when using natural light, the use of electricity is reduced by 11.74% and when changing electric lamps, the reduction is 39.12%. In conclusion, the lighting requirement of the building should be 1) to use more natural light. 2) when the lamp is damaged, the light bulb which is brighter than the original lamp should be replaced, so that we can choose to turn on certain lamp and do not have to turn on all the lamps at a time. 3) to install a diagram showing the location of the lamp to easily choose to turn on/off the lamps.