نتایج جستجو برای: energy use efficiency

تعداد نتایج: 2592108  

Journal: :ماشین های کشاورزی 0
مرتضی تاکی یحیی عجب شیرچی رضا عبدی محمد اکبرپور

in this research energy efficiency for greenhouse cucumber production in shahreza township located in esfahan province using data envelopment analysis (dea) technique was studied. in this study, data were obtained from 25 randomize active vegetable greenhouses from 60 greenhouses in shahreza township and villages environs. the results showed that the highest and lowest consumed energy were rela...

Journal: :ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 2020

Journal: :مهندسی صنایع 0
سید علی ترابی دانشیار دانشکدة مهندسی صنایع دانشگاه تهران محسن شایگان کارشناس ارشد مهندسی صنایع دانشگاه خوارزمی تهران محمد محمدی استادیار گروه مهندسی صنایع دانشگاه خوارزمی تهران

by developing the level of life in societies, the need for new resources of energy becomes more important. in almost all cases, the aim is to convert one form of energy to the electrical form. with advances of technology and use of new electric and electronic devices and gadgets, the need for electrical energy is increasing and providing stable and continuous electric power becomes very importa...

2015
Je-Liang Liou Ching-Ren Chiu Fung-Mey Huang Wan-Yu Liu

This article modifies the conventional two-stage DEA model to construct an analytical model for energy-related efficiency with undesirable outputs. Our proposed model relaxes the constraint that the inputs of the second process must come from the first process. As a result, our proposed model is more flexible than the original model in terms of the application of energy-related efficiency measu...

Journal: :تولید گیاهان زراعی 0

crop rotation affect on crop nitrogen uptake and nitrogen use efficiency (nue). crop rotations with high nue decrease energy use and increase level of sustainability in agro ecosystems. the objectives of this research were to determine the suitable double cropping system for enhancing nue and evaluate the effects of crop rotation, n fertilizer rate and return of crop residue on nue. this study ...

اکرمی, فاطمه, نصراللهی, نازنین,

The growing process of building design and construction, regardless of reducing sources of energy, is one of the threats to the environment and human life. Therefore it is necessary that design strategies in new buildings be orientated to the aim of reducing energy consumption and environmental pollution. Earth sheltering is a passive idea that reduces building energy consumption and ensure...

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