نتایج جستجو برای: more energy efficiency
تعداد نتایج: 2797707 فیلتر نتایج به سال:
seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...
in this study cross section geometry and material of gasket in proton exchange membrane (pem) fuel cells have been investigated to achieve optimized fuel cell in terms of energy efficiency. the role of gaskets in fuel cells is sealing of gas flow channels and preventing from combination of them. in a pem stack, gasket with approved geometry that suffers more stress has better sealing. for this ...
many mobile and off-grid devices include electronics and other electrical consumers like servo drives, which need a quite low supply power. since the price for photovoltaic modules drops continuously, photovoltaic power supply is interesting in more and more applications. in solar powered systems, a battery is needed to store energy for the night and cloudy periods. the power electronics of suc...
in this research we have studied the effect of some transition-metals (cu, ag and au) substitutions on two-electron reduction potential of flavins by application of dft method. all geometries have been optimized at blyp level of theory and “6-31+g** + lanl2dz” mixed basis set. the frequency job at the same method and basis sets has been performed to obtain gibbs free energy of compounds. it h...
in this study, energy consumption pattern, efficiency and the percentage of saved energy and inputs of poultry production farms in isfahan, nain and najafabad townships with different capacities were evaluated. the average of net energy gain per 1000 bird for capacities less than 10, 10-30 and more than 30 thousand pieces was calculated as -143.66, -129.58 and -94.99 gj/1000 bird, respectively....
Reduction of specific energy consumption by 1 – 2% per year is typically what is considered feasible for end-use energy applications. This article tries to answer the question whether much higher rates, for example 5% and more are feasible for new equipment, installations and buildings. After examining some end-use functions in industry, buildings and the transport sector, it is concluded that ...
Resonating with the theme “Blue Ocean Research”, this research explores the usability of informationsystems with concepts typically used to measure the efficiency of a mechanical system. Security ismeasured not by how often it succeeds, but how often it fails. Usability is frequently in the eye of thebeholder, and often measured by objective user response. This creates a challenge t...
the study examined gender analysis of energy use for rice production in north central nigeria using a sample of 60 rice farmers. an analysis of gender relations provides the information on the different conditions men and women face, and the different effects that policies and programs may have on them. simple descriptive statistics were used to analyze the data. energy efficiency and energy pr...
in this paper, non parametric data envelopment analysis (dea) was subjected to the energy data of wheat producers in punjab state, india, and technical, pure technical and scale efficiencies were calculated for farms both category wise and zone wise. the main objective was to determine the strength of the correlation between non-parametric efficiencies and indices such as energy ratio and speci...
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