Eco Friendly Actions Alternative Energy Sources Compositions alternative energy sources ebook | Page 31

WHAT IS BIOMASS??
Biomass is used as the main source of thermal and electrical energy through so-called
cogeneration plants, most commonly found in
the production of cellulosic goods (from paper to
cardboard and others). The efficiency of these
plants by cogeneration is lower than those used
for heating only (generally 70%, with the
possibility of reaching 90% through a very
efficient process efficiency), therefore their use
on a smaller scale, below 10 MW, is rarely
encountered. Biomass can benefit from cost-
efficiency if it is used as additional fuel in coal-
fired thermal power plants - up to 10% biomass
reduces harmful emissions to a high degree without affecting energy efficiency. The new trend
is that coal-fired power stations approaching the end of their lives are gradually transformed
into biomass plants, with the costs of conversion being lower than the construction of a
biomass plant from scratch. In addition, there are also social advantages for the areas that are
often radically dependent on these coal-fired power plants.
Generally, biomass is much more efficient to use
for producing heat than for producing electricity.
Pre-treatment
processes
(drying,
pellet
transformation and briquettes or thermo-chemical
treatments such as pyrolysis) increase the energy
bias of the biomass, contributing to the reduction
of transport pollution and final conversion. What
are the risks of pollution due to the use of biomass
After As we have seen above, the use of biomass
does not mean removing harmful emissions,
mainly carbon dioxide, which contributes most to
the greenhouse effect. So, compared to renewable sources such as solar, wind or geothermal,
the use of biomass is not "completely green". Instead, biomass is a better alternative than
fossil fuels, resulting in a reduction of about 70% in emissions from burning coal or petroleum
fuels.
LAURA/ROMANIA
Alternative energy is any energy source that is an alternative to fossil fuel.
Alternative sources of energy are: Marine energy, hydroelectric, wind, geothermal and
solar power. It is used solar, wind and geothermal and hydroelectric power in
Lithuania. There is built the biggest hydroelectric power station in Kaunas city, in
Lithuania. Also it is possible to see many wind power plants in Lithuania, especially
closer to the sea, where the wind is stronger. Sun power stations are even built on the
top of the houses. Geothermal power usually is used to supply power for private
houses. I think it is a good to use these types of energy, because we can save nature,
animals and plants. We don’t need to use dangerous methods to dig oil or carbon in a
beautiful places of our planet, so we don‘t risk to destroy these places.
LEVA/LITHAUANIA
ECO FRIENDLY ACTIONS 2016-2018