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    An analysis on energy performance indicator and GWP at Airports; a case study
    (Taylor & Francis Inc, 2021) Akyuz, Mehmet Kadri; Kafali, Hasim; Altuntas, Onder
    Airports are very important facilities for global transportation. Energy plays a key role for the comfort needs of passengers and the safe operation of aircraft. In airports with high energy consumption areas, energy management allows the reduction of both costs and environmental impacts. Therefore, the phenomena that affect energy consumption in airports need to be identified. In this study, the factors affecting energy consumption in airport terminal buildings were determined by regression analysis and mathematically modeling. In addition, energy-induced Global Warming Potential (GWP) was determined and its change was explained mathematically. It was seen that with each change in passenger causes a 1.59 kWh energy and 1.44 kg CO2 eq. change. However, each increase in the number of degree days causes a 3468.6kWh energy and 1428 kg CO2eq. increase.
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    Öğe
    Determination of optimum insulation thickness for building's walls with respect to different insulation materials: a case study of International Hasan Polatkan Airport terminal
    (Inderscience Enterprises Ltd, 2018) Akyuz, Mehmet Kadri; Altuntas, Onder; Sogut, Mehmet Ziya; Karakoc, Tahir Hikmet; Kurama, Semra
    The systems in which energy is most intensely used in airport terminal buildings are HVAC systems. More efficient heating and cooling systems and the performance of the building envelope can provide significant reductions in energy consumption without compromising comfort conditions in terminal buildings. In this study, the exterior walls of the International Hasan Polatkan Airport were examined using a thermal camera, and it was observed that heat losses were due to the lack of thermal insulation. The optimum insulation thicknesses for different thermal insulation materials (EPS, XPS, glass wool and stone wool) were determined by the life cycle cost (LCC) method. The effect of the application of the calculated insulation thicknesses on energy performance and the economic payback periods were determined. As a result, optimum insulation thicknesses have been found as 0.05 m, 0.033 m, 0.078 m and 0.973 m for EPS, XPS, glass wool and stone wool in respective order. It was observed from the results of analysis that the economic payback period changed between 4.85 and 7.7 years if optimum insulation thicknesses are applied.
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    Öğe
    Investigation of indoor air quality and thermal comfort condition in airport terminal buildings
    (Emerald Group Publishing Ltd, 2021) Akyuz, Mehmet Kadri; Kafali, Hasim; Altuntas, Onder
    Purpose This paper aims to measure the thermal comfort conditions and indoor air quality parameters, through on-site measurements taken in the areas mostly occupied by the passengers and airport staff. Terminal buildings consist of areas with various functions. Heating, ventilation and air conditioning requirements vary from area to area, thus leading to challenges in the management of indoor environment quality. Therefore, the study focuses on investigating the indoor environment conditions in various areas of the terminal buildings. Design/methodology/approach In this study, the thermal comfort and indoor air quality were evaluated based on the parameters [CO(2)concentration, relative humidity, temperature, predicted mean vote (PMV) and predicted percentage of dissatisfied (PPD)] collected for summer 2019 from different zones inside the International Dalaman Airport terminal building located in the southwest of Turkey. The measurements were performed in the areas mostly occupied by the airport staff and passengers (check-in area, security control areas, international departure lounge, domestic departure lounge and baggage claim hall). Findings As a result of the study, it was observed that the CO(2)concentration was 480-965 ppm, the relative humidity was 51.9-75.8% and the temperature was in the range of 23.9 degrees C-28.3 degrees C inside the airport terminal. The PMV values were determined to be in the range of -0.23 to 0.67, and the PPD values 5-15%, which are used to measure the thermal comfort conditions. Originality/value There has been limited study on the determination of the indoor air quality in airport terminals and the investigation of the thermal comfort conditions. However, in this study, indoor air quality and thermal comfort conditions were determined by on-site measurements in the five mostly occupied areas by passengers and employees in the terminal building.
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    Öğe
    Thermal Performance, Indoor Air Quality, and Carbon Footprint Assessment in Airport Terminal Buildings
    (Mdpi, 2024) Akyuz, Mehmet Kadri; Acikkalp, Emin; Altuntas, Onder
    This study explores energy consumption, thermal performance, and indoor environmental quality (IEQ) in terminal buildings. Through detailed thermal analysis, this research identifies key sources of heat loss, such as thermal bridges in walls and windows, which significantly increase energy demands for heating. IEQ measurements show that the lack of mechanical ventilation, combined with high passenger densities, frequently leads to CO2 levels exceeding recommended thresholds, highlighting the urgent need for improved ventilation systems. Energy requirements were calculated based on the TS 825 standard and compared to actual consumption data, showing that optimizing boiler settings could save 22% of heating energy without any additional investment. Simulations and economic analyses further showed that adding thermal insulation to the building envelope and installing double-glazed windows with improved U-values could achieve significant energy savings and reduce CO2 emissions, all with favorable payback periods. A life cycle assessment (LCA) was conducted to evaluate the environmental impact of these interventions, demonstrating significant reductions in the airport's carbon footprint. The findings underscore the importance of aligning operational standards with international guidelines, such as ASHRAE and CIBSE, to ensure thermal comfort and optimize energy use.