TY - JOUR
T1 - Numerical analysis of the performance of a hybrid solar chimney system with an integrated external thermal source
AU - Yazdi, M. H.
AU - Solomin, E.
AU - Fudholi, A.
AU - Sopian, K.
AU - Chong, Perk Lin
PY - 2021/12/1
Y1 - 2021/12/1
N2 - In this study, a three-dimensional hybrid solar chimney with an integrated external thermal source is developed to complements the solar energy for uninterruptible power generation using flue gas channels as a supply source in the collector. The hybrid system is examined numerically using ANSYS Fluent software including a solar air collector with a diameter of 6 m, a 6.65-meter-long chimney, and four thermal channels. The timetable is set for different hours, namely for two modes, i.e. without flue gas during daytime (1st Case), with flue gas during daytime (Case 2-A), and with flue gas during night (Case 2-B). Moreover, the turbine effect in different day hours and with different heat sources during night are applied. The numerical method is validated by comparing its results with previous works based on different chimney heights. The present results show that the hybrid approach increases system performance significantly. Simulation is done in thermal channel with 0.0015 kg/s in chimney temperature of 116 °C. The results indicate that mass flow rate and power increased by 7.63% and 11.48%, respectively, compared to the mode with no flue gas. This study proved that the proposed method can eliminate the night defect and allow the operation of solar chimney power plants at night.
AB - In this study, a three-dimensional hybrid solar chimney with an integrated external thermal source is developed to complements the solar energy for uninterruptible power generation using flue gas channels as a supply source in the collector. The hybrid system is examined numerically using ANSYS Fluent software including a solar air collector with a diameter of 6 m, a 6.65-meter-long chimney, and four thermal channels. The timetable is set for different hours, namely for two modes, i.e. without flue gas during daytime (1st Case), with flue gas during daytime (Case 2-A), and with flue gas during night (Case 2-B). Moreover, the turbine effect in different day hours and with different heat sources during night are applied. The numerical method is validated by comparing its results with previous works based on different chimney heights. The present results show that the hybrid approach increases system performance significantly. Simulation is done in thermal channel with 0.0015 kg/s in chimney temperature of 116 °C. The results indicate that mass flow rate and power increased by 7.63% and 11.48%, respectively, compared to the mode with no flue gas. This study proved that the proposed method can eliminate the night defect and allow the operation of solar chimney power plants at night.
M3 - Article
SN - 2451-9049
VL - 26
JO - Thermal Science and Engineering Progress
JF - Thermal Science and Engineering Progress
M1 - 101127
ER -