Energy and Transport Future - Rechenaufgaben
Vorlesung ETH Zürich
Vorlesung ETH Zürich
The remaining global carbon budget decreased to roughly 700Gt last year. The countries of the world agreed to allocate the remaining global carbon budget between each other in proportion to each country's populations. Some information, especially concerning Country A, is provided in Table 1.
Calculate the carbon budget of country A. (Gt)
14 Gt
Assuming no changes in population, GDP as well as energy- and CO2-intensity in the next decades, find the year (e.g. 2045) when your country (A) will completely use up its carbon budget.
2030
To comply with its carbon budget constraint, the government of country A sets a target to linearly decrease the carbon intensity of the primary energy mix down to zero by a certain year. Fully exploiting the carbon budget constraint and assuming linear decrease in carbon intensity of its primary energy consumption, find the year (e.g. 2045) in which your country would have to achieve zero emissions (again assume no changes in population, GDP).
2042
The government of your country introduces both policies: 2000W/cap and 1tCO2/cap per year to be achieved by the year 2050. The shares of renewable and non-renewable energies in your country's energy demand as well as their respective carbon intensities for year 2019 are given in the Table 2.
What should the minimum share of renewables be in your consumption by 2050 in order to comply with both policies at once (assuming no changes in CO2 intensities of fuels)?
Your gas boiler approaches its end of life and you are considering replacing it with a heat pump.
Hint: The zeta parameter (ζ) indicates the deviation of the real from the ideal COP of the heat pump.
For option 1, compute the CO2 intensity of the input electricity mix [g/kWhel] that would be necessary to reach CO2 parity with the existing gas boiler.
556
Your gas boiler approaches its end of life and you are considering replacing it with a heat pump.
Hint: The zeta parameter (ζ) indicates the deviation of the real from the ideal COP of the heat pump.
For option 2, compute the CO2 intensity of the input electricity mix [g/kWhel] that would be necessary to reach CO2 parity with the existing gas boiler.
1167
Fragetext
Imagine you are planning the heating system of a residential building in Switzerland. In order to supply the building with its annual heat demand of 20'000 kWhheat, you have two supply options:
a) Installing a residential-grade heat pump of your own on-site at the building.
b) Connecting the building to the local heating district network served by an industrial heat pump.
Both options are characterized by different technical details and cost (see Tables below).
Equations: COP_real = zeta * COP_theoretical; COP_theoretical = T_H / (T_H - T_C)
For your analysis, you are especially interested in the cost of the two options.
Calculate the annual operating cost of providing heat for on-site option a) (Hint: capital and grid access cost are not considered operating cost here) in CHF/year.
1983
Calculate the annual cost of heat provision for the centralized option b) in CHF/year. (Hint: Also ignore capital and grid access cost here.)
1600
Now, that you know about the operating cost of the two options, you are interested in the total cost, i.e. including investment and grid access cost. Compute the maximum distribution grid length up to which the centralized unit including distribution is the cheaper option as compared to the decentralized heating solution. Enter your answer in meters!
642
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Lernkarten
The remaining global carbon budget decreased to roughly 700Gt last year. The countries of the world agreed to allocate the remaining global carbon budget between each other in proportion to each country's populations. Some information, especially concerning Country A, is provided in Table 1.
Calculate the carbon budget of country A. (Gt)
14 Gt
Assuming no changes in population, GDP as well as energy- and CO2-intensity in the next decades, find the year (e.g. 2045) when your country (A) will completely use up its carbon budget.
2030
To comply with its carbon budget constraint, the government of country A sets a target to linearly decrease the carbon intensity of the primary energy mix down to zero by a certain year. Fully exploiting the carbon budget constraint and assuming linear decrease in carbon intensity of its primary energy consumption, find the year (e.g. 2045) in which your country would have to achieve zero emissions (again assume no changes in population, GDP).
2042
The government of your country introduces both policies: 2000W/cap and 1tCO2/cap per year to be achieved by the year 2050. The shares of renewable and non-renewable energies in your country's energy demand as well as their respective carbon intensities for year 2019 are given in the Table 2.
What should the minimum share of renewables be in your consumption by 2050 in order to comply with both policies at once (assuming no changes in CO2 intensities of fuels)?
Your gas boiler approaches its end of life and you are considering replacing it with a heat pump.
Hint: The zeta parameter (ζ) indicates the deviation of the real from the ideal COP of the heat pump.
For option 1, compute the CO2 intensity of the input electricity mix [g/kWhel] that would be necessary to reach CO2 parity with the existing gas boiler.
556
Your gas boiler approaches its end of life and you are considering replacing it with a heat pump.
Hint: The zeta parameter (ζ) indicates the deviation of the real from the ideal COP of the heat pump.
For option 2, compute the CO2 intensity of the input electricity mix [g/kWhel] that would be necessary to reach CO2 parity with the existing gas boiler.
1167
Fragetext
Imagine you are planning the heating system of a residential building in Switzerland. In order to supply the building with its annual heat demand of 20'000 kWhheat, you have two supply options:
a) Installing a residential-grade heat pump of your own on-site at the building.
b) Connecting the building to the local heating district network served by an industrial heat pump.
Both options are characterized by different technical details and cost (see Tables below).
Equations: COP_real = zeta * COP_theoretical; COP_theoretical = T_H / (T_H - T_C)
For your analysis, you are especially interested in the cost of the two options.
Calculate the annual operating cost of providing heat for on-site option a) (Hint: capital and grid access cost are not considered operating cost here) in CHF/year.
1983
Calculate the annual cost of heat provision for the centralized option b) in CHF/year. (Hint: Also ignore capital and grid access cost here.)
1600
Now, that you know about the operating cost of the two options, you are interested in the total cost, i.e. including investment and grid access cost. Compute the maximum distribution grid length up to which the centralized unit including distribution is the cheaper option as compared to the decentralized heating solution. Enter your answer in meters!
642
