Comparison of Optimized and Conventional Models of Passive Solar Greenhouse—Case Study: The Indoor Air Temperature, Irradiation, and Energy Demand

Saleh Mohammadi, Esmail Khalife, Mohammad Kaveh, Amir Hosein Afkari Sayyah, Ali Mohammad Nikbakht, Mariusz Szymanek and Jacek Dziwulski
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Saleh Mohammadi: Department of Mechanic of Biosystems Engineering, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
Esmail Khalife: Department of Civil Engineering, Cihan University-Erbil, Kurdistan Region, Erbil 44001, Iraq
Mohammad Kaveh: Department of Mechanic of Biosystems Engineering, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
Amir Hosein Afkari Sayyah: Department of Mechanic of Biosystems Engineering, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
Ali Mohammad Nikbakht: Department of Mechanic of Biosystems Engineering, University of Urmia, Urmia 57561-51818, Iran
Mariusz Szymanek: Department of Agricultural, Forest and Transport Machinery, University of Life Sciences in Lublin, Głęboka 28, 20-612 Lublin, Poland
Jacek Dziwulski: Department of Strategy and Business Planning, Faculty of Management, Lublin University of Technology, Nadbystrzycka 38, 20-618 Lublin, Poland

Energies, 2021, vol. 14, issue 17, 1-15

Abstract: This study was carried out to optimize a computational model of a new underground passive solar greenhouse to improve thermal performance, storage, and saving of heat solar energy. Optimized and conventional passive solar greenhouse were compared in regards of indoor air temperature, irradiation, and energy demand. Six different materials were used in the conventional model. In addition, TRNSYS software was employed to determine heat demand and irradiation in the greenhouse. The results showed that the annual total heating requirement in the optimized model was 30% lower than a conventional passive solar system. In addition, the resulting average air temperature in the optimized model ranged from −4 to 33.1 °C in the four days of cloud, snow, and sun. The average air temperature in the conventional passive solar greenhouse ranged from −8.4 to 24.7 °C. The maximum monthly heating requirement was 796 MJ/m 2 for the Wtype87 model (100-mm lightweight concrete block) and the minimum value was 190 MJ/m 2 for the Wtype45 model (50-mm insulation with 200-mm clay tile) in a conventional passive solar greenhouse while the monthly heating requirement estimated 126 MJ/m 2 for the optimized greenhouse model. The predictability of the TRNSYS model was calculated with a coefficient of determination (R 2 ) of 95.95%.

Keywords: passive solar greenhouse; indoor temperature; irradiation; heating demand; TRNSYS (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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