29.09.2012 Views

Technology Status - NET Nowak Energie & Technologie AG

Technology Status - NET Nowak Energie & Technologie AG

Technology Status - NET Nowak Energie & Technologie AG

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

BIOPOWER<br />

A Brief History of Biopower<br />

Biomass is the oldest form of renewable energy exploited by mankind,<br />

mainly in the form of wood burnt to provide heat and light for domestic and<br />

productive activities. Traditional use has been primarily based on direct<br />

combustion, a process still extensively practised in many parts of the world.<br />

Traditional biomass is a dispersed, labour-intensive source of energy. In the<br />

past as in the present, increasing human population and/or industrial activity<br />

has led to growing energy demand and often destruction of the natural<br />

environment. More concentrated and convenient energy sources like nonrenewable<br />

fossil fuels have substituted for traditional biomass in many areas,<br />

although huge rural populations in developing countries are still not served<br />

with modern electricity or fuels. While biomass energy has been associated<br />

with poor households, it is now increasingly recognised as an important<br />

source of energy for many sectors in both industrial and developing<br />

countries.<br />

<strong>Technology</strong> <strong>Status</strong><br />

● Basic Features<br />

An important feature of bioenergy and bioelectricity is their complexity.<br />

Bioenergy varies due to technical, environmental and policy factors, but also<br />

by resource type and form. Biological resources are still mainly used for heat<br />

production, as in combined heat & power plants (CHP), and can be used and<br />

stored in different forms (solid, liquid, gaseous). Biomass energy conversion<br />

has both positive and negative environmental impacts: burning of organic<br />

and fossil material emits harmful gasses, while the disposal of agricultural<br />

and other organic waste utilises otherwise worthless material for energy.<br />

Biomass differs from other renewables in that it links the farming and forestry<br />

industries, which provide the various feedstocks, to power generation, which<br />

utilises the converted fuels. Compared to most other renewable energies,<br />

biomass has the key advantage of inherent energy storage.<br />

5<br />

BIOPOWER<br />

103

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!