Biomass Forum

Biomass refers to living and recently dead biological material that can be used as fuel or for industrial production. Most commonly, biomass refers to plant matter grown for use as biofuel, but it also includes plant or animal matter used for production of fibres, chemicals or heat. Biomass may also include biodegradable wastes that can be burnt as fuel. It excludes organic material which has been transformed by geological processes into substances such as coal or petroleum.

Biodiesel Future Energy	Biomass is organic material made from plants and animals. Biomass contains stored energy from the sun. Plants absorb the sun's energy in a process called photosynthesis. The chemical energy in plants gets passed on to animals and people that eat them. Biomass is a renewable energy source because we can always grow more trees and crops, and waste will always exist. Some examples of biomass fuels are wood, crops, manure, and some garbage. When burned, the chemical energy in biomass is released as heat. If you have a fireplace, the wood you burn in it is a biomass fuel. Wood waste or garbage can be burned to produce steam for making electricity, or to provide heat to industries and homes. Burning biomass is not the only way to release its energy. Biomass can be converted to other usable forms of energy like methane gas or transportation fuels like ethanol and biodiesel. Methane gas is the main ingredient of natural gas. Smelly stuff, like rotting garbage, and agricultural and human waste, release methane gas - also called "landfill gas" or "biogas." Crops like corn and sugar cane can be fermented to produce the biofuel, transportation fuel, ethanol. Biodiesel, another transportation fuel, can be produced from left-over food products like vegetable oils and animal fats. Biomass fuels provide about 3 percent of the energy used in the United States. People in the USA are trying to develop ways to burn more biomass and less fossil fuels. Using biomass for energy can cut back on waste and support agricultural products grown in the United States. Biomass fuels also have a number of environmental benefits.
Biofuels Forum
Biomass Forum
Bioenergy Forum

Tuesday, August 26, 2008

[renewable-energy] Re: Ground Source Heat Pump

In the Pyranees mountains they bury about 40 yards of about 6 in. metal
ducting about a yard deep in the ground. One end is open to the air -
with protection from rain, insects, mice etc - the other end is inside
the building with a small fan to draw air through the duct. One gets
about 57 F [15 C] air temperature, all the time, This is heating in
winter but cooling in summer,
regards
Ferrand www.grunweb.org.uk

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[renewable-energy] Re:Trinity Power Plant concept using the Stirling idea

So how much electricity can you generate with almost zero power input?
Maintaining a temperature difference is not easy (basic thermodynamics), and for
each square meter of Fresnel lenses, for example, you would be lucky to net
100 W net electricity for a few hours a day. If you can come up with a good
heat source (Mt. Etna?), a Stirling engine makes sense. By the way, back in
the 1970's, NASA spent $millions trying to develop Stirling engines, and they
gave up.

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