Evaluation Of Economic Viability - Bosch CHP CE 240 NE Technical Manual

3.2.3

Evaluation of economic viability

In the following assessment of economic viability, the
calculation is based on a runtime of approx. 5,300 h/a
for steam boiler and CHP module. The calculation is
carried out conservatively, e. g. statically, with regard to
the basic year and without consideration of energy price
Energy costs
Position
Fuel demand steam boiler
Fuel demand steam boiler, 4-
draught steam design
Fuel demand CHP module
Fuel demand floor standing
condensing boiler
Power drawn
Cost allocation, internal power
consumption
Reduction peak load
Reimbursement of petroleum tax
Total of consumption costs
Table 9 Energy costs
Running costs
Position
Service costs floor standing
condensing boiler
Annual service costs steam boiler
Service costs CHP module
Total of running costs
Table 10 Running costs
Summary
Costs €/a
Investment
Additional investment costs
Consumption
Appliance operation
Total of consumption costs
Additional consumption
costs
ROI
Table 11 Summary
The increased investment costs in this example pay off within 3 years.
Systemlösung – 6 720 885 509 (2018/03)
Rate Unit Annual
consumpti
on
35 €/MWh 5800
35 €/MWh 5000
35 €/MWh 5300
35 €/MWh 2700
700
150 €/MWh 1600
3500
– –
90 €/kW 400
– –
Annual service costs 4-draught steam
boiler and CHP with MEC system
[€]
500
4500
35 000
40 000
Annual running costs 4-draught steam
boiler and CHP with MEC system
950 000
515 000
614 000
40 000
654 400
–
3.0
increase. The costs are individually calculated for fuel,
current, cost allocation and refunds as well as for
occurring service costs. The additional investment costs
and the savings during operation result in an
amortisation time (ROI) for investment.
Unit Annual consumption
costs 4-draught steam
boiler and CHP with
MEC system
MWh
MWh 175 000
MWh 186 900
MWh
MWh 25 700
MWh 246 900
MWh
– – 45 300
kW – 36 000
– – – 29 400
614 000
Unit
€
€
€
€
€/a
Engineering information and sizing
Annual
consumption costs
steam boiler
[€] [€]
– 203 000
–
– 94 500
–
–
– 525 000
–
–
–
822 500
Annual service costs
steam boiler
[€]
500
4500
–
5 000
Annual running costs
steam boiler
435 000
–
822 500
5000
827 500
173 100
Unit
€
–
€
€
€/a
€/a
19