Environmental Engineering Reference
In-Depth Information
9.3
Flow diagram of the energy balance of an agricultural biogas plant
connected with CHP for electricity and heat production (Fischer
et al
.,
2009).
.
increase the biogas yield in order to thereby decrease the methane
production potential of residues
.
make use of the thermal energy in the effluents (e.g. by using a heat
exchanger or heat pump)
.
avoid methane losses (e.g. avoid high pressure during gas storage, which
leads to operation of the security valves; avoid leakages through detailed
searches for single leaks)
.
avoid 'further losses', including operation of the flare (e.g. better tuning
of gas production and gas utilisation by optimising the management of
the substrate feed)
.
decrease conversion losses and the energy demand of the plant itself (e.g.
use of more efficient equipment and adjusting the parameters of the
existing equipment to ensure operation at maximum efficiency).
9.5 Conclusion and future trends
It has been shown that a thorough understanding of energy flows in a biogas
plant offers great potential for the optimisation of plant operation, leading
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