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CHP
Building a biogas plant with
CHP for electrification
Which is the most economical solution: a biogas plant with CHP for electrification - or
a biogas plant with biogas upgrading for gas grid injection? Well, Germany-based
HAASE Energietechnik can help you make up your mind.WIP has the story.
The decision about whether to build
a biogas plant with CHP for
electrification - or invest in a biogas
plant with biogas upgrading for gas grid
injection is certainly an important
question for investors.
HAASE Energietechnik manufactures its
own designs and elements for both
versions, says the company.
Not only is the size of the biogas plant
important, says HAASE, but the regional
price level for natural gas and the specific
method for the biogas upgrading will also
adffect the decision on what to build. The
thermal range and the local energy prices
are also crucialto the economics.
There are specific questions you must
ask first. Are there additional heat
consumers besides the biogas plant itself?
If yes - then in most cases the
electrification of the biogas in a biogas
CHP unit will be the most economical
solution. The exhaust heat from the
engines can be used to heat residential
and commercial buildings.
HAASE Biogas Upgrader in Jameln.
HAASE provides biogas CHP
units as compact, ready-forconnection
container units
with integrated flare system
and booster.
If no further heat consumer
is available, then the surplus
exhaust heat needs to be
cooled away, which
considerably reduces the
profitability of the CHP, and
additionally creates an
atmospheric burden, says
HAASE.
In this situation choosing a
Biogas Upgrader for gas grid
injection depends on whether
there is a handy gas-pipeline
close by, and whether the biogas
plant can provides at
least 500 Nm3/per hour of
raw biogas. If these criterion are met
then a biomethane plant - a HAASE
BiogasUpgrader - would be economic to
build.
A BiogasUpgrader produces the necessary
process heat by itself and can even export
surplus heat. The higher the regional
energy price for the heat supply of the
biogas plant, the more economical the
BiogasUpgrader. This technology for biogas
upgrading provides exhaust heat at a
temperature level of 55°C. It provides the
basic heat load of the biogas plant and
thereby substitutes for expensive primary
energy. This is a strategic advantage other
techniques for biogas upgrading do not
offer, says the company.
According to company spokesperson,
Ursula Packhäuser: “When it comes to
flexibility and mobility, containerised CHP
units are unbeatable. They are delivered
fully mounted and ready for connection.”
HAASE BiogasVerstärker, BHKW.
She explained: “The customer provides a
suitable foundation onsite and generation
of electricity can start as soon as the gas
and power supplies have been connected
to the container. For waste heat recovery,
the hot water pipes are also connected.
Containerised CHP units excel by virtue of
their mobility and modular design. They
may easily be adapted to new conditions.
The booster units for power generation
are also fitted in containers.
Containerized CHP units made by HAASE
are elements at the heart of a new
cogeneration plant for landfill gas on the
Sudokwon landfill site in Seoul, Korea.
This facility has an overall capacity of
about 10MW which is compltely fuelled by
landfill gas.
Internet link
www.haase.de
WIP
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JUNE 2010 • WORLDWIDE I NDEPENDENT P OWER