Research Information System
4th International Conference on Frontiers in Academic Research (ICFAR 2024), Konya, Turkey, 13 - 14 December 2024, pp.929-935, (Full Text)
Among all sectors, the building sector emerges as one of the major energy consumption sectors causing high carbon emissions. The International Energy Agency has stated that the building envelope is responsible for 36% of building energy consumption and approximately 39% of CO2 emissions. Therefore, building energy efficiency is the main target of energy policies at national and global levels. In this study, the effect of macro-encapsulated inorganic PCM (InfiniteRPCM) integrated roof, which is one of the passive energy storage methods in buildings, on building heating and cooling energy demand and CO2 emissions has been investigated. An office building has been modelled in 3D using the EnergyPlus-based DesignBuilder software and energy simulations have been conducted for the external climate conditions of Istanbul province during the monthly, annual, heating and cooling seasons. The roof-integrated PCM has been analyzed without using insulation material at single-layer and different melting temperatures of 21°C, 23°C and 25°C. According to the research results, the 21°C melting temperature of the phase change material has been determined as the optimum temperature according to the maximum energy savings. The maximum heating and cooling energy savings rate are respectively found as 25% and 6% provided by the single-layer PCM during the heating and cooling season. In addition, the total energy savings provided by PCM is calculated as 12% on average and the annual average amount is 57,741.4 kJ/m2.year. The annual average total CO2 emission reductions provided by macro-encapsulated inorganic PCM integrated roof for fuel types such as coal, fuel oil, natural gas and electricity have been respectively calculated as 2014 kgCO2/year, 1535 kgCO2/year, 1088 kgCO2/year and 2870 kgCO2/year depending on different melting temperatures.