Publications

The various applications of solar energy have progressed significantly over recent decades. In this paper, finding the optimum performance criteria of a SCPP is studied. The mathematical modelling of 1-D flow is written and the optimum performance is determined for each group of geometric and environmental variables including the angle of collector roof (β), chimney divergence (α) and ambient wind velocity (Va). In addition, different artificial intelligence techniques including regression tree, genetic programming and a novel method named trended regression tree are applied to find optimum performance conditions at any arbitrary ...

A solar tower system is a nonpolluting solar thermal power plant that utilizes a combination of a wind turbine and generator to convert thermal energy generated from a solar collector into electrical energy. The study focuses on a system comprising a solar collector that transforms solar energy into thermal energy, a chimney that converts thermal energy into kinetic energy, and a wind turbine that further converts kinetic energy into electrical energy. The system's performance is evaluated through the implementation of a numerical model, which is validated by comparing it with experimental data. Four different types of meshes are te...

Solar chimney is one of the solar energy-based techniques, and the phenomenon of mass transfer usually occurs in solar chimney, which has not received enough attentions to date. The aim of this paper was to develop a mathematical model of solar chimney considering both heat and mass transfer processes. Both experimental and analytical results indicated that mass transfer has a great influence on the system ventilation performance. Furthermore, the mathematical modelling revealed that the integral mean air temperature was decreased by 18.70 %, while the airflow rate was reduced by 70.40 %, when the area ratio increased from 0.10 to 0...

Solar Chimney Power Plants (SCPPs) are promising renewable energy technology that utilize solar energy to generate electricity. The conventional cylindrical SCPP, as exemplified by the Manzanares prototype, produced 50 kW of power with a 194.6 m chimney and a 244 m collector. However, divergent SCPPs demonstrated higher efficiency. The purpose of this study is to analyze and compare the key performance parameters of these two plants by examining the current experimental and simulation findings. Prior reviews have also not gone much into the impact of chimney's divergence angle or area ratio (AR) on the airflow dynamics. With an opti...

This study investigates clean energy generation through the efficient utilization of solar irradiance in a solar chimney (SC) system. To overcome the limitations of low airflow rates in conventional designs, tangential partition walls (TPWs) are introduced in the collector section to induce a swirling motion, thereby enhancing airflow and thermal performance. A three-dimensional computational model was developed using ANSYS FLUENT and validated against experimental data from a solar chimney located in Al Ain, UAE. The model was used to analyze flow behavior and assess the average velocity and temperature at the chimney inlet. Result...

The relationships between temperature rise, flow rate, and power output of turbine are presented for a small solar chimney unit. An experimental solar chimney system was constructed at Engineering Faculty of Trakya University in Turkey. Solar radiation, temperature rise, chimney inlet velocity, air flow rate, and power output were monitored. Solar chimney power output can be controlled by air flow management and maximum power point can be achieved for different operating conditions. Results showed that it is possible to obtain up to 50% more power output by using an air flow controller in solar chimney systems. Typical temperature r...

The increasing global demand for sustainable and efficient energy solutions has prompted the exploration of hybrid technologies that integrate multiple renewable energy source. This study presents comprehensive comparative analysis between the performance of the standalone Solar Chimney Power Plant (SCPP) and its integration Water Desalination and Power Production (WDPP) system. The systems were evaluated based on the improvements in electricity, water, hydrogen, and oxygen production. Results demonstrated that the integration of SCPP with WDPP proves is an effective approach for augmenting renewable energy production and resource g...

This study analyzes the thermophysical performance of a conventional Manzanares solar chimney (SC) plant for finding the optimal configuration by varying three key design parameters, namely inlet height of the collector, diameter, and divergence of the chimney at different irradiation levels (400–1000 W/m2). A numerical solver based on finite volume methods is employed to run simulations. Additionally, multiple machine learning surrogate models were evaluated to identify the most effective approach for performance prediction. The analyses of three geometric parameters leads to optimum design values, which vary with solar irradiati...

This study introduces a solar chimney design incorporating built-in metallic partitions to enhance convective heat transfer between fluids and solids. Based on the Manzanares prototype, numerical simulations were conducted to analyze the effects of solar radiation intensity, turbine pressure drop, and ambient temperature on flow fields and thermo-hydraulic performance. A response surface methodology was employed to develop an output power prediction model. Results indicate that metallic partitions significantly improve thermal efficiency, with relative increase rates of 9.28 % in power output and 21.61 % in collector efficiency comp...

Solar chimneys are efficient systems for natural ventilation based on thermal principles. However, in regions with high temperatures it may not serve to ensure a comfortable indoor environment. To overcome this challenge, integrating air humidification into the ventilation process becomes necessary. The present study investigates the feasibility of integrating a solar chimney with a humidification setup for evaporative cooling in the climate of Kirkuk, Iraq. This investigation utilizes both experimental and numerical techniques. Numerical simulations carried out using a finite volume approach and validated against the experimental d...