VARIATIONS - SEARCH RESULTS
If you're not happy with the results, please do another search
As the solar industry develops, we find many variations in design and specification requirements. Along with these variations, there is a great deal of misinformation and misunderstanding of the distinctions among various cable types and the characteristics of different cable constructions.
The idea of using solar radiation to generate air convection that can subsequently be converted to an energy source has been around since the start of the 20th century, when a Spanish Colonel called Isidoro Cabanyes proposed it in a scientific magazine. Solar Updraft towers, also called solar wind or solar chimney plants, provide a very simple method for renewable electricity generation, with a constant and reliable output. Other renewable energy sources such as wind turbines and solar arrays suffer from high diurnal and seasonal fluctuations, or unpredictable patterns of output.
A clear understanding and predictive modelling of resources already yields dividends in the fossil-fuelled sector. And this approach is even more important for the wind industry, where even a slight variation in wind energy production can have significant financial impact, says Richard Krauze.
To bring step reductions in biomass cost, a strategic biomass supply approach is required based on a holistic evaluation of the intricate relationship between biomass transport cost, biomass supply variability risks, biomass supply market structure, alternative feedstock availability, and incentives offered to farmers.
Carnige Melon University’s Climate and Energy Decision Making Center’s recent study, “Regional variations in the health, environmental, and climate benefits of wind and solar generation,” is a testimony to the difficulty of cost justifying renewable energy development.
Small variations in cell parameters can affect the system-level performance of a PV array. National Semiconductor's Ralf Muenster explains how distributed maximum power point tracking (MPPT) enabled by power optimizer technology can solve the panel mismatch problem.
High-technology company Catch the Wind is commercialising a nacelle-mounted, forward-looking system capable of sensing both wind speed and direction, as well as rapid wind variations. In December 2009, the company released striking trial test results for the innovative lightweight technology, claimed as unique and named the Vindicator Laser Wind Sensor (LWS).
Rapid growth in the solar industry has triggered a pressing need for consistent solar engineering and construction standards, particularly in connection with the structural design of rooftop PV systems. Over the last decade, we've seen an incredible variation in requirements and requests from project engineers and permitting officials across North America for more than 1,000 projects.
The ability to accurately predict and prevent power fluctuations is of considerable importance to solar PV (photovoltaic) plant operators in terms of sustaining profitability, estimating revenue returns and ensuring customer quality of service. Variations in solar irradiance can cause rapid fluctuations in power generation, reducing the quality and reliability of the power generated by large grid-connected PV plants.
Turbine manufacturer DeWind has had an interesting journey in recent years, passing through a succession of owners before reaching the hands of US company CTC. Now plans are underway to begin production of the D8.2 model, a variation on the D8 design tailored for the US market. Eize de Vries reports.