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Could anyone confirm these figures that I obtained
from calculation:
A digester produces 76,285 m^3 of biogas per year
to fuel a CHP unit. Now, British Biogen state that 1m^3 of biogas produces 1.7
kWh of electricity, and 2kWh of thermal energy.
Therefore the CHP unit should produce 76,285 x 1.7
= 129685 kWh electricity
AND
76, 285 x 2 =152570 kWh of thermal
energy
BUT, It is stated that half the thermal energy
generated has to be used to keep the digester running at temperatures of 35 - 40
dgs.
Therefore 76285 kWh of thermal energy is
still available as heat.
Is this right? This figure seems very high.
Any help on this would be , as always, greatly
appreciated
R.Edwards
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