نتایج جستجو برای: keywords renewable energy

تعداد نتایج: 2515885  

2017
Daniel Ştefan Armeanu Georgeta Vintilă

Energy is crucial to economic progress, but the contemporary worldwide population increase that demands greater energy generated from conventional exhaustible resources, an energy price upsurge, and environmental concerns, imperils sustainable economic growth. Nevertheless, switching to renewable energy produced from naturally replenished resources promotes energy security, likewise addressing ...

Journal: :به زراعی کشاورزی 0
عارفه رزازی دانشجوی دکتری، گروه زراعت، دانشکدة کشاورزی، دانشگاه تربیت مدرس، تهران - ایران مجید آقاعلیخانی دانشیار، گروه زراعت، دانشکدة کشاورزی، دانشگاه تربیت مدرس، تهران - ایران برات قبادیان دانشیار، گروه مهندسی مکانیک بیوسیستم، دانشکدة کشاورزی، دانشگاه تربیت مدرس، تهران - ایران بهنام زند استادیار پژوهش، بخش تحقیقات زراعی و باغی، مرکز تحقیقات کشاورزی و منابع طبیعی استان تهران، ورامین - ایران سید محمد صفی الدین اردبیلی دانشجوی دکتری، گروه مهندسی مکانیک بیوسیستم، دانشکدة کشاورزی، دانشگاه تربیت مدرس، تهران - ایران

castor bean (ricinus communis l.( with a capability to withstand harsh conditions, low nutritional needs, 50 percent of oil content and high- quality, is one of the best crop used to produce biodiesel. the first step toward introduction and widespread cultivation of this crop is to investigate the energy balance for its cultivation. to do so, energy input (include renewable and nonrenewable) an...

2012
Dolf Gielen

The International Renewable Energy Agency (IRENA) is an intergovernmental organisation dedicated to renewable energy. In accordance with its Statute, IRENA's objective is to "promote the widespread and increased adoption and the sustainable use of all forms of renewable energy". This concerns all forms of energy produced from renewable sources in a sustainable manner and includes bioenergy, geo...

2014
Ahmet Aktas Koray Erhan Engin Ozdemir Sule Ozdemir

Abstract: Solar, wind and other renewable energy sources are becoming an important part of energy supply to the power grid. Integrating a Hybrid Energy Storage Systems (HESS) with renewable energy sources can make these intermittent renewable energy sources more dispatchable. The HESS will play a vital and large role in renewable energy based 3-phase 4-wire grid connected electrical power infra...

2016
Pavel Janovsky Scott A. DeLoach

Renewable sources are not used to their full potential for electricity generation. Unpredictability of solar and wind power forces renewable generators to bid conservative generation amounts in a dayahead market in order to avoid fees for failure to provide generation. In this paper we propose an approach to increase the use of renewable sources, which allows renewable generators to hedge again...

Journal: :the modares journal of electrical engineering 2015
payam teimourzadeh baboli salah bahramara mohsen parsa moghaddam mahmoud reza haghifam

the share of dc-based renewable energy resources (rers) and electricity storage systems are increasing due to developments of smart grid technologies. moreover, the share of dc-based load has rapid growth due to significant developments of power electronic technologies. therefore, a more flexible power system is required for efficient integration of emerging loads and generators. in this paper,...

2012
Cassia Simons Januario Michael Taylor

The International Renewable Energy Agency (IRENA) is an intergovernmental organisation dedicated to renewable energy. In accordance with its Statute, IRENA's objective is to "promote the widespread and increased adoption and the sustainable use of all forms of renewable energy". This concerns all forms of energy produced from renewable sources in a sustainable manner and includes bioenergy, geo...

2012
Michael Taylor

The International Renewable Energy Agency (IRENA) is an intergovernmental organisation dedicated to renewable energy. In accordance with its Statute, IRENA's objective is to "promote the widespread and increased adoption and the sustainable use of all forms of renewable energy". This concerns all forms of energy produced from renewable sources in a sustainable manner and includes bioenergy, geo...

2016
Robin K. Doroff

This paper examines the use of policy mechanisms to increase renewable energy consumption within the United States. In order to effectively measure the change of renewable energy consumption, I analyze two initiatives that promote energy consumption from renewable sources and overall increases in energy conservation. Colorado and Washington had approved initiatives in the years 2004 and 2006, r...

2001
GU Shuhua LIU

China’s population has reached 1.25 billion, ranking No.1 in the world. Along with rapid economic increase during the past 20 years, there is increasing pressure on the energy industry from limited mineral energy resources and regulations for environmental protection regulations. The development and utilization of renewable energy is becoming one important option to realize sustainable developm...

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