Table 2 Impact of chimney diameter (d_ch) on the performance of SC plant.

Ming et al.¹⁵

Numerical study to find best chimney shape

Cylindrical chimney is the best choice. Optimum slenderness ratio ranges from 6 to 8

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Kasaeian et al.⁸

Numerical and analytical study, velocity measurement for chimney diameters of 10, 20 and 30 cm

The chimney diameter is having more influence than the chimney height. 30 cm diameter chimney is better performer

No optimum value of diameter is studied

Ghalamchi et al.¹¹

Studied chimney diameters are 0.1, 0.2 and 0.3 m

Maximum velocity is at 0.1 m

Optimum diameter is not studied

Toghraie et al.¹²

Numerical study by varying chimney diameter from 1 to 12 m on mass flow, pressure, and power

Maximum mass flow, power and minimum pressure is noted at optimum chimney diameter of 5 m

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Cottam et al.¹⁶

Effect on power generation for chimney radius from 50 to 200 m

Optimum chimney radius is 165 m, where the power is maximum

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Yapici et al.¹³

Numerical investigation by varying chimney diameters (15 to 35 cm)

Optimum chimney diameter is 30 cm to obtain maximum impact on the performance. Further rise in diameter impacts negatively

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