Investigating the Effect of a North Wall on Energy Consumption of an East–West Oriented Single Span Greenhouse

Autor: H Ghasemi Mobtaker, Y Ajabshirchi, S. F Ranjbar, M Matloobi

Publikováno v: Journal of Agricultural Machinery, Vol 7, Iss 2, Pp 350-363 (2017)

Introduction Greenhouse is a structure which provides the best condition for the maximum plants growth during the cold seasons. In cold climate zones such as Tabriz province, Iran, the greenhouse heating is one of the most energy consumers. It has be

Externí odkaz: https://doaj.org/article/9908268261e249f8a326f245d9495c3e

Increasing energy efficiency by geometric modification of hoe-type furrow opener

Autor: R Rahimzadeh, Y Ajabshirchi, Sh Abdollahpour, A Sharifi Malvajerdi, N Sartipi, A Mohammadi

Publikováno v: Journal of Agricultural Machinery, Vol 6, Iss 2, Pp 499-509 (2016)

Introduction Direct planting becomes more common in the recent years, because it conserves soil and water as well as it saves energy and time. However, this technology needs special implements such as seed planter. Given that direct planting is pract

Externí odkaz: https://doaj.org/article/04830486715c4cdf9409086ce3055d6b

Determining a Suitable Mathematical Model to Predict the Repair and Maintenance Costs of Earthmoving Machines (Crawler tractor)

Autor: H Ghaffari, Kh Mohammadi-Ghermezgholi, R Fellegari, Y Ajabshirchi, M Dolat-Alizadeh

Publikováno v: Journal of Agricultural Science and Sustainable Production, Vol 20, Iss 3, Pp 61-72 (2010)

Repair and maintenance expenses as one of the variable costs, are necessary for improving the quality and quantity of machine performance. Records of such costs, can be affect predicting repair and maintenance expenditures. Mathematical modeling redu

Externí odkaz: https://doaj.org/article/3013f4507aa245ceb4b71b0c42702ea3

Investigation of Energy Use Efficiency for Dry Wheat Production Using Data Envelopment Analysis (DEA) Approach; Case Study: Silakhor Plain

Autor: Y Ajabshirchi, M Taki, R Abdi, A Ghobadifar, I Ranjbar

Publikováno v: Journal of Agricultural Machinery, Vol 1, Iss 2 (2011)

In this research energy efficiency for dry wheat production in three levels including 0.1 up to2, 2.1 up to 5 and over 5.1 hectares for the farming year 2008-2009 in Silakhor plain located in Borujerd and Dorud divisions of Lorestan province was stud

Externí odkaz: https://doaj.org/article/f8d03af5dc284b12bd3b4eb7118cf95b

A Comparison Among Different Parameters for the Design of a Photovoltaic/Thermal System Using Computational Fluid Dynamics

Autor: S. Abdollahpoor, Payman Salami, H. Behfar, Y. Ajabshirchi

Publikováno v: Engineering, Technology & Applied Science Research, Vol 6, Iss 5 (2016)
Engineering, Technology & Applied Science Research, Vol 6, Iss 5, Pp 1119-1123 (2016)

The purpose of this paper is to compare several fins, duct height, and velocity magnitudes to acquire a PhotoVoltaic/Thermal system designed through Computational Fluid Dynamics. Simulation of different fins (rectangular, trapezoidal, curved, and pin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2156a3a2f8366220b709e1b096c1dc55
https://doi.org/10.48084/etasr.667