Indonesia Conference Directory

Indonesias energy consumption pattern for housing sector for heating or cooling reached 43%, water heater 27%, lighting 3.4%, appliances 26.6%. As for the use of electrical energy, reaching 50% of the total energy needs is absorbed in the building sector. Therefore, the residential sector has a very dominant role in electricity consumption, whether for lighting purposes, the use of household appliances as well as for conditioning the room. Indonesia, as a developing country, will undoubtedly move to improve the lives of its population. It will affect and induced a shift in energy pattern used by the community, whereby most of it will be used to increase the comfort of the space, whether by improving the air conditioning system, the lighting system, or water heater. On the other side, the current energy consumption pattern for the commercial building sector reaches 50-60% for air conditioning systems, 30% for lighting and the rest to drive other machines. The combination of building materials and Phase Change Materials (PCM) is an efficient way to increase the thermal energy storage capacity of building components. The technique of combining with encapsulation-PCM composite form is the most straightforward method, practical and economical method, and has attracted the interest of many researchers in the last decade. This paper will discuss the results of developing numerical modeling for simulation of thermal energy storage on composites equipped with macro-encapsulation PCM. The simulation is conducted using the EnergyPlus software. Furthermore, the validation of modeling result will later be conducted through comparison of simulation result with field test result. In this study used beeswax as a phase change material. Beeswax has a moderate melting temperature, which is placed within the indoor thermal comfort range and the bentonite clay will be used as a binder. From the results of numerical analysis of the use of PCM on the walls of the building can be concluded that PCM is able to store heat energy from solar radiation, thus reducing energy consumption for cooling the room. Increasing the thermal conductivity of PCM will increase the value of the overall heat transfer coefficient of the wall resulting in increased energy consumption for room cooling