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Alternative Energy Tutorials on Energy Articles

Penstock Design

hydro energy

Penstocks are pipes, tunnels, canals or channels used to transport water from river to turbine. Penstock design is an important part of any hydropower scheme because without it, the turbine blades would not rotate. Hydro energy is a well known and used form of renewable energy resource that uses both the stored potential energy and the kinetic energy of water as a source of power. The correct design of a penstock for hydropower projects reduces its cost, improves water flow, and saves on waste water.

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Impulse Turbine

water turbine design

Impulse Turbines are bidirectional turbines used in hydro power and ocean power applications. Impulse turbines convert the kinetic energy of moving water, firstly into mechanical energy and secondly into electrical energy using an electrical generator. Impulse turbines use buckets or paddles plus one or more water jets directed at these buckets as they rotate. The water flows over the turbine blades at atmospheric pressure so is generally suited for high head, low flow applications.

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Wood Biomass Energy

Wood Biomass Energy

Wood Biomass is a versatile energy source which can be used instead of traditional fossil fuel energy in many energy sectors for providing electricity, heat and transport fuels as well as non-energy useage. The sustainable and optimal use of wood biomass feedstock for energy purposes can also be used in the production of Biofuels and Biogas to help cut our greenhouse gas emissions providing the growing supply of biomass feedstocks can be maintained .

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Passive Solar Energy

roof solar panels

Passive solar design increases energy efficiency and comfort in homes. Sunlight can supply ample heat, light, and shade into a well-designed home without the need for HVAC machines and as such designing your home to use passive solar can reduce your heating and cooling energy bills. Passive solar energy design is nothing new but by designing the layout of your home with the sun in mind will make it more energy efficient, comfortable, and affordable

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Airborne Wind Energy

airborne wind energy

Airborne wind energy uses tethered wings, aerofoils, kites or ballons that fly high up in crosswinds to generate electrical energy. Unlike grounded wind turbines, airborne wind energy devices fly freely in the air connected by a tether to the ground exploiting the relative velocity between the crosswinds and the ground. The force of the wind in higher altitudes above the ground are typically much stronger and more consistent than those closer to the ground so using airborne wind energy devices makes it possible to obtain very high power densities

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How to Get Closer to an Off Grid Home

roof solar panels

If you’re considering the many options available to reduce your home’s dependence on fossil fuels such as coal and gas, chances are you’re one of the few that has looked seriously at installing solar panels. If you drive either a hybrid or entirely electric car (or use public transit and/or bikes and walking) and are compulsive about minimizing energy use wherever possible, whether that be by switching off lights, taking short showers, or unplugging unused appliances, then an off-grid option may be for you

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How To Size A Solar System

alternative energy sources

Sizing a solar system for your home or garden, whether off-grid with battery backup or grid-tied can be a daunting task. But reducing your electricity usage through conservation and efficiency measures as wellas a good home design plays an important role in keeping down the size and cost of any photovoltaic (PV) system you want to install. Using energy efficient appliances and lighting, as well as non-electric alternatives wherever possible, can make an off-grid solar photovoltaic powered system a cost competitive alternative to the utility power grid

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Stirling Engine Generator

solar dish

The Stirling Engine is a heat engine design that operates by the cyclic compression and expansion of various gases at different temperatures. A Stirling engine is a closed-cycle regenerative heat engine which uses a gaseous working fluid permanently contained within the system to produce mechanical movement to drive an electrical generator. The heat source used to drive a Stirling engine is generally concentrated solar energy but solid waste heat and bioenergy can also be used

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Solar Cell I-V Characteristic

solar cell

Solar cell I-V characteristics curves show the current and voltage characteristics of a particular photovoltaic cell, module or array in order to give a detailed description of its solar energy conversion ability and efficiency at different light intensities. Solar cell I-V characteristics curves are use to measure a cells open-circuit voltage, short-circuit current, fill factor and efficiency with the rating of a PV cell or panel depending on these parameters

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Wind Water Pumping

windmill

Using wind power to pump water for irrigation or drainage is nothing new. Wind pumping uses the kinetic energy of the wind as a renewable energy resource to produce different and useful energy forms, such as mechanical energy or even electrical energy. Piston pumps or rotary pumps driven by the power of the wind pump the water from one location to another. Wind water pumping reduces the need for diesel driven or electric motor driven pumps as wind driven pumps can produce a continuous flow of water, as long as it is windy, and requires no fossil fuel, making it a more eco-friendly solution

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