نتایج جستجو برای: thermal and electrical efficiency

تعداد نتایج: 16935622  

2014
Ahmad Hasan Sarah Josephine McCormack Ming Jun Huang

The current research seeks to maintain high photovoltaic (PV) efficiency and increased operating PV life by maintaining them at a lower temperature. Solid-liquid phase change materials (PCM) are integrated into PV panels to absorb excess heat by latent heat absorption mechanism and regulate PV temperature. Electrical and thermal energy efficiency analysis of PV-PCM systems is conducted to evalu...

Journal: :international journal of energy and environmental engineering 2011
stefania proietti umberto desideri paolo sdringola marta millucci

in this paper, a study and design of energy conservation actions and the obtention of energy efficiency titles, according to the italian ministerial decree 20th july 2004, applied to lighting and electrical systemsin a school district managed by perugia province (italy), is presented.specifically, the analysis regarded the replacement of neon lamps with high efficiency ones, and the power facto...

2012
Junting Xi Naji Al Dahoudi Qifeng Zhang Yueming Sun Guozhong Cao

The influences of thermal annealing on the microstructure, dy -ads rption, surface area, electrical properties and power conversion efficiency of well-crystallized TiO2 photoelectrodes of dye-sensitized solar cells have been systematically investigated. Although the heat treatment of TiO2 photoelectrodes at higher temperatures was found to result in an enhanced electron transport, it was accomp...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

In order to evaluate the effect of autumn and winter planting on yield and phenology of potato cultivars using thermal indices an experiment was coducted in split plot in time based on a radomized compelet block design with three replications at Behbahan Agriculture Research Station in Khuzestan province, south of Iran in 2014 and 2015. Cultivar (Sante, Savalan and Javid) was considered as main...

Journal: :amirkabir international journal of electrical & electronics engineering 2015
a. shahmoradi m. kalantar

this paper presents a formulation of unit commitment for thermal units integrated with wind and solar energy systems and electrical vehicles with emphasizing on mixed integer nonlinear programming (minlp). the renewable energy resources are included in this model due to their low electricity cost and positive effect on environment. as well as, coordinated charging strategy of electrical vehicle...

Journal: :IET Computers & Digital Techniques 2011
Ankur Jain Syed M. Alam Scott Pozder Robert E. Jones

Although the stacking of multiple strata to produce three-dimensional (3D) integrated circuits (ICs) improves interconnect length and hence reduces power and latency, it also results in the exacerbation of the thermal management challenge owing to the increased power density. There is a need for design tools to understand and optimise the trade-off between electrical and thermal design at the d...

Journal: :Electronics 2022

The target of the current study was to review and analyze research activities previous studies on cooling techniques for thermal photovoltaic (PV) systems using phase-change materials. These materials have ability absorb release certain amounts potential heat energy by changing their state from phase (solid–liquid) within a small temperature range. been used regulate lower temperature, increase...

A. L. Subramaniyan, A. Vignesh G. Kumaraguruparan R. Venkatesan

Nanofluids are gaining much importance over the past decade due to their enhanced thermal conductivity, specific heat, cooling capacity, electrical conductivities. Novel properties of nanofluids are yet to be explored to the highest potential applications. One of the prominent applications of nanofluids is in thermal conduction. The presence of nanoparticle in a fluid can enhance the thermal co...

A. L. Subramaniyan, A. Vignesh G. Kumaraguruparan R. Venkatesan

Nanofluids are gaining much importance over the past decade due to their enhanced thermal conductivity, specific heat, cooling capacity, electrical conductivities. Novel properties of nanofluids are yet to be explored to the highest potential applications. One of the prominent applications of nanofluids is in thermal conduction. The presence of nanoparticle in a fluid can enhance the thermal co...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید