Abstract:
This research is a study of energy conservation in the Port Authority of Thailand Head Office Building which has a functional area of 26,130 m2, 2,000 employees and working hours from 08.30 am. 04.30 pm during weekdays. This study is concentrated on air conditioning systems and lighting systems, particularly by collecting data from machinery and electrical equipments in order to determine energy management in the building. When the potential energy saving measures were obtained, the efficiency of the equipments before improvements were measured for energy saving assessment and worthiness of investment. Referring to the study, the building has used the 8 steps of energy management system from the Ministry of Energy. During 2015, the Port Authority of Thailand Head Office Building consumed 3,573,100 kWh/year or equal to 13,649,715 Baht/year with a specific energy consumption of 136.74 kWh/m2. The energy consumption proportions included air conditioning system (52%), lighting systems (18%) and others systems (30%). The building then implemented 5 energy conservation measures as follow 1) The measure for installation of VSD in Chilled Water Pump 2) The measure for installation of Automatic Condenser Tubes Cleaning System 3) The measure for installation of Split Type Air Condition Unit in areas that have overtime working employees 4) The measure for changing Fluorescent lamp to LED 5) The measure for increasing heating insulation for ceiling and 6) The measure for increasing heating insulation for wall, and sum up energy saving all over these 6 measures equal to 644,775 kWh/year or 2,463,041 Baht/year and payback period is 0.34 15.12 years.