A presentation by Alex Marshall from Clarke Energy on the utilisation of biogas in Africa. Description of the benefits of embedded generation and combined heat and power.

11. Fuel
(100%)
Electricity for
transmission
(35%)
Generation/heat
losses (65%)
Conventional Power Plant
Gas-fuelled CHP plant
90%
Efficiency
Generation/heat losses (10%)
Fuel
(100%)
Electricity (45%)
Useful Heat (45%)
Transmission Losses
(1.5%)
Supplied electricity
(efficiency) 33.5%

12. 2.08 kWh loss
4.33 kWh
1.00 kWh electricity
1.25 kWh heat
Steam turbine
Boiler
1.47 kWh
2.86 kWh
2.5 kWh
Gas
Supply
1.00 kWh electricity
0.25 kWh losses
1.25 kWh heat
CHP engine
0.669 kg CO2
0.294 kg CO2
0.963 kg CO2
0.5 kg CO2
48% CO2
reduction
42% Primary
Energy
Savings

27. OTHER GAS TO
POWER SOLUTIONS