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c_cogen_more

What can I choose in the calculator?

The calculator lets you choose the share of total centralised heat demand covered by Centralised Cogeneration in Switzerland in the selected year (2035 or 2050).

Centralised Cogeneration

image

Contents

  • Impact
  • Global market
  • Definition
  • Constraints
  • Assumptions
  • References

IMPACT – What are the impacts of Centralised Cogeneration?

In Switzerland, increasing the share of Centralised Cogeneration will have the following impacts:

Energy system

image Reduces global primary energy demand.

image May decrease electricity demand by displacing electric forms of heating with district heating.

image May increase total consumption of heating oil and natural gas.

image Could increase the share of renewable energy sources in the energy mix if biomass CHP systems are deployed.

Environment & Climate

image Likely to reduce global CO2 emissions.

image Avoid emissions of harmful pollutants, especially in built areas.

Society & Economy

image Likely to increase the cost of the energy transition as it requires deployment of district heating networks and CHP technologies as well as, in principle, building efficiency improvements.

GLOBAL MARKET – What is the global market for Centralised Cogeneration?

There are currently more than 5,000 district heating systems in Europe supplying more than 10% of European heating demand and generating an annual turnover of €25-30 billion. About 80% of the heat in these district heating networks comes from various forms of cogeneration.[4]

DEFINITION / CONSTRAINTS

DEFINITION - What is Centralised Cogeneration?

In a Combined Heat and Power (CHP) plant, the energy from a fuel is used to generate both electricity and heat. Thermodynamically, the heat is recovered from the waste heat of the electricity generation process resulting in a higher overall energy efficiency than can be achieved if the processes are operated separately (CHP plants can capture over 80% of the total energy in the fuel whereas typical advanced thermal power plants only capture about 40-50% of the energy as electricity).

CONSTRAINTS - What are the key barriers facing Centralised Cogeneration deployment?

• Requires district heating infrastructure (network) that can be capital intensive to deploy, particularly as a retrofit.

• Is more effective with high efficiency building stocks that can manage with modest heating water temperatures.

ASSUMPTIONS – What are the assumptions considered in the calculator?

The model contain three types of centralized cogeneration technologies: CCGT-CHP, Biomass CHP, Diesel CHP and Waste incineration CHP (Waste-CHP).

Next tables contain the assumptions that have been introduced in the Centralized cogeneration model of the calculator.

Efficiency [%]
2035 2050
Technology Electricity Heat Electricity Heat
CCGT-CHP [1]50 40 52 41
Biomass-CHP [2]18 53 19 56
Waste-CHP [2]20 45 20 45
Emissions
2011-2050
CO2-eq. emissions [kgCO2-eq./MJfuel] CCGT-CHP0.0679
Biomass-CHP0.00868
Waste-CHP0.00024
Deposited waste [UBP/MJfuel] CCGT-CHP0.136
Biomass-CHP0.360
Waste-CHP0.02344
Cost
2011 2035 2050
Specific investment [CHF2010/kWe] CCGT-CHP1127 1046 942
Biomass-CHP5621 5366 5366
Waste-CHP7503 7037 7037

REFERENCES

[1] NEEDS project (2008), Final report on technical data, costs, and life cycle inventories of advanced fossil power generation systems

[2] UK DECC (2011), Review of the generation costs and deployment potential of renewable electricity technologies in the UK.

[3] Mitsubishi Heavy Industries Ltd (2007), High efficiency and low emission diesel engine co-generation system

[4] DHC+ 2012, District Heating and Cooling plus, The Vision for District Heating and Cooling.

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c_cogen_more.txt · Last modified: 2019/10/22 09:17 (external edit)