نتایج جستجو برای: solar energy frams

تعداد نتایج: 757545  

2008
Lixi Zhang Chunlei Li

In this paper, a new solar-heated generation system with capacity of 10kW is designed. The system is based on solar-heated Rankine cycle. The CPC solar energy collector array is used as the main heat source, and the gas boiler as the assistant heat source. The heat storage facility provides heat for put-off 24 hours generating without sun’s radiation. The paper is focused on the analysis of fou...

2016
Jose A. Ruiz-Arias Christian A. Gueymard Francisco J. Santos-Alamillos David Pozo-Vázquez

Concentrating solar technologies, which are fuelled by the direct normal component of solar irradiance (DNI), are among the most promising solar technologies. Currently, the state-of the-art methods for DNI evaluation use datasets of aerosol optical depth (AOD) with only coarse (typically monthly) temporal resolution. Using daily AOD data from both site-specific observations at ground stations ...

2017
Rienk van Grondelle Egbert Boeker

Photosynthesis in nature does not use the far infrared part of the solar spectrum (λ > 900 nm), comprising about 30% of the incoming solar energy. By simple thermodynamic arguments it is explained that this is due to the unavoidable back reactions during the night. It follows that λ ≈ 900 nm provides a natural limit on artificial photosynthesis. The same limit holds for a two-tandem Si solar cell.

Journal: :Chemical reviews 2010
Michael G Walter Emily L Warren James R McKone Shannon W Boettcher Qixi Mi Elizabeth A Santori Nathan S Lewis

Energy harvested directly from sunlight offers a desirable approach toward fulfilling, with minimal environmental impact, the need for clean energy. Solar energy is a decentralized and inexhaustible natural resource, with the magnitude of the available solar power striking the earth’s surface at any one instant equal to 130 million 500 MW power plants.1 However, several important goals need to ...

2017
Jawaharlal Nehru

The mitigation of global energy demands and climate change are the most important factors in the modern days. Moreover sustainable energy security is the another key issue which stimulate to think the researchers, manufacturers and government to develop the solar energy extensively. Development and application of solar energy have been regarded by the government of India and common people, and ...

Photovoltaic/thermal (PV/T) systems are a hybrid of solar collectors and photovoltaic panels which convert radiant energy into both electricity and heat. The objective of this work is to simulate a water-based flat plate photovoltaic/thermal collector with glass cover and without it and investigate the influence of four parameters of solar irradiation, packing factor, ambient temperature and ma...

Elahe Veisi Leila Siampour Mehdi Jahangiri, Shoeleh Vahdatpour Shokoofeh Behzadfar

Renewable systems influence the process of supplying domestic electricity demands. It will be useful to replace the conventional energy generation system by renewable energy sources since the uncontrolled use of fossil fuels is accompanied by global warming and environmental hazards, in addition to the danger of their depletion, and because most of the energy derived from these fuels are used i...

2016
Zan Gao Clifton Bumgardner Ningning Song Yunya Zhang Jingjing Li Xiaodong Li

With rising energy concerns, efficient energy conversion and storage devices are required to provide a sustainable, green energy supply. Solar cells hold promise as energy conversion devices due to their utilization of readily accessible solar energy; however, the output of solar cells can be non-continuous and unstable. Therefore, it is necessary to combine solar cells with compatible energy s...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید