ABSTRACT
Greenhouse is a feasible option for sustainable crop production in the regions of adverse climatic conditions. For a succe5sM greenhouse design, the selection of shape and orientation is of paramount importance.
In this study, three most commonly used single span shapes of greenhouses namely even-spin, uneven-span and vinery type have be& selected for comparison. The length, width and height (at the center) are kept same for all the selected shapes. The relevance of this paper was to develop a thermal model using MATLAB program for computing transmitted total solar radiation (beam, diffused and ground reflected) at each hour, for each month and tit any latitude for the seIected geometry greenhouses (through each wall, inclined surfaces and roofs) for both east-west and north-south orientation. The computed transmitted solar radiation is then introduced into another thermal model that is developed using MATLAB program to compute hourly inside air temperature for each shape and orientation. Statistical validation is carried out for the former model using solar radiation data for horizontal surface at (280 35'N and 770 12'E), New Delhi, India and (19Q 07'N and 720 51'E), Mumbai, India.
At 19oN latitude, uneven-span shape greenhouse receives 10% more yearly average solar radiation as compared to even-span shape greenhouse whereas vinery shape to' receives 12% less yearly average solar radiation as compared to even-span shape. Similarly, at 280N latitude, an even span shape to receives 8% more average radiation as compared to even-span shape whereas vinery shape receives 10% less .yearly average solar radiation as compared to even-span shape. Results above show that east-west orientation of uneven-span solar greenhouse is, the best suited during each month for both analyzed-latitudes.
The developed model is very simple and has provided understanding to climate control process inside the greellhouse.
F, A & EZEKWEM, C (2021). DETERMINING THE OPTIMUM SHAPE AND ORIENTATION OF A GREENHOUSE ON THE BASIS OF TOTAL RADIATION AVAILABILITY. Afribary. Retrieved from https://track.afribary.com/works/determining-the-optimum-shape-and-orientation-of-a-greenhouse-on-the-basis-of-total-radiation-availability
F, ADESOLA and CHIDIOZIE EZEKWEM "DETERMINING THE OPTIMUM SHAPE AND ORIENTATION OF A GREENHOUSE ON THE BASIS OF TOTAL RADIATION AVAILABILITY" Afribary. Afribary, 15 Mar. 2021, https://track.afribary.com/works/determining-the-optimum-shape-and-orientation-of-a-greenhouse-on-the-basis-of-total-radiation-availability. Accessed 14 Nov. 2024.
F, ADESOLA, CHIDIOZIE EZEKWEM . "DETERMINING THE OPTIMUM SHAPE AND ORIENTATION OF A GREENHOUSE ON THE BASIS OF TOTAL RADIATION AVAILABILITY". Afribary, Afribary, 15 Mar. 2021. Web. 14 Nov. 2024. < https://track.afribary.com/works/determining-the-optimum-shape-and-orientation-of-a-greenhouse-on-the-basis-of-total-radiation-availability >.
F, ADESOLA and EZEKWEM, CHIDIOZIE . "DETERMINING THE OPTIMUM SHAPE AND ORIENTATION OF A GREENHOUSE ON THE BASIS OF TOTAL RADIATION AVAILABILITY" Afribary (2021). Accessed November 14, 2024. https://track.afribary.com/works/determining-the-optimum-shape-and-orientation-of-a-greenhouse-on-the-basis-of-total-radiation-availability