Akademik Veri Yönetim Sistemi
Sustainable Energy Technologies and Assessments, cilt.57, 2023 (SCI-Expanded)
In this study, theoretical–experimental and life cycle climate performance analyses of the gravity-assisted heat pipe filled with R513A were carried out. The heat carried by the heat pipe and the internal heat transfer coefficients of the evaporator and condenser were investigated. As the temperature set value (30, 35, 40, 45, 50 °C) increased, the heat transferred by the heat pipe increased and the averaged experimental data were obtained as 27.65, 49.30, 74.95, 99.40, 114.90 W, respectively. For the given temperature set values, the experimental internal heat transfer coefficient of the evaporator was obtained as 946, 1125, 1360, 1652, and 1215 Wm−2 °C−1. Experimental condenser internal heat transfer coefficients were obtained as 1385, 1460, 1527, 1563, and 1417 Wm−2 °C−1. According to the life cycle climate performance analysis of the given system, it has been determined that 82.22 % of the total emissions are caused by direct emissions and 17.78 % by indirect emissions. Direct emissions are related to leaks of the working fluid. Choosing a low global warming potential working fluid will significantly reduce emission and thus reduce the overall emission of the gravity-assisted heat pipe.