| No | Shape | Orientation | Location details and mode of study | Conclusion | References | |
| 1 | Even-span, uneven-span, vinery, modified arch & Quonset | East-West & North-South orientation | All ranges of latitude/Thermal modeling (energy balance equations) | The maximum solar radiation was reported in un-even span shape, and the Quonset shape reported the lowest value at east–west orientation. The rise of air temperature depends on the geometry of the greenhouse dryer. | Sethi (2009) | |
| 2 | Uneven span, even span, single span, vinery, Quonset and arch | East-West and North-South orientation | Iran (38˚10' north latitude and 46˚18' east longitude)/ Thermal modeling (energy balance equations) | Single span shape received 8% more radiation than any of the other shapes at the east-west orientation. Brick (sun-facing direction) minimises radiation loss. | Mobtaker et al. (2019) | |
| 3 | Even-span, uneven-span, vinery, semi-circular & elliptic | East-West orientation | Bayburt-Turkey (39˚52' to 40˚37' latitudes and 39˚37' to 40˚45' longitudes)/Mathematical modeling (Matlab) | The elliptical-shaped greenhouse received the highest amount of radiation compared to other shapes in the study. | Cakır and Sahin (2015) | |
| 4 | Even span, standard peak uneven span, vinery, arch & Quonset | East-West orientation | Delhi, India/Numerical computation using empirical formulas | The peak uneven span shape reported higher solar energy transmission than other shapes. | Singh and Tiwari (2010) | |
| 5 | Triangle, hemispherical & trapezium | Not indicated | Chennai, India. CFD modeling under free and forced convection | The trapezoidal greenhouse solar dryer achieved a maximum temperature than other hemispherical and triangular dryers. | Purusothaman, Valarmathi & Santhosh (2019) | |
| 6 | Vinery, uneven-span, even span, modified arch & modified IARI shape | East-West orientation | New Delhi, India. Experimental comparison study | Vinery shape performed best during winter while the even span was best in summer | Tiwari & Gupta (2002) | |
| 7 | Parabola, Quonset, Modified Quonset, Pyramid, Igloo and tropical | Not indicated | Nadu, India. Experimental and CFD investigation | The ideal shape is Quonset Shape, it generates a maximum of 72˚C in summer and 66˚C in winter. | Jagadeesh, Vivekanandan, Natarajan, & Chandrasekar (2020) | |
| 8 | Different shapes | East-West and North-South orientation | Review study | Even-span roof and Quonset shape greenhouses are the most commonly used for crop cultivation and drying | Sahdev, Dhingra & Kumar (2017) | |
| 9 | Different shapes | East-West and North-South orientation | Review study | Uneven span shape maintains the high temperature all year round. East-west orientation is gives best performance. | Odesola & Ezekwan (2012) | |
| 10 | Parabola and sinusoidal | Not considered | CFD investigation | The sinusoidal shape captured more radiation had shorter drying time than parabola | Srichat, Vengsungnle, Hongtong, & Jongpluempiti (2019) | |
| 11 | Even-span, arc and Quonset | East-West and North-South orientation | CFD investigation using TRNSYS software | Quonset shape is the optimum greenhouse shape in Morocco, with east-west orientation | Choab et al. (2021) | |
| 12 | Quonset, gable, even-span & Pyramid | Not considered | Experimental study, Cairo. latitude angle of 30.62˚, longitude angle 32.27˚ | Quonset is the ideal shape. It has absorbs the largest amount of radiation | Radwan, El-Kholy, El-Sheikh and Mousa (2016) | |