WorksheetsQuiz 2
Total questions: 10
Worksheet time: 20mins
How to determine if a site is suitable for a geo‐ thermal power station?
Lots of water
Proximity to transmission network
Shipping and logistic pathways
•Lots of heat
•Supply of water
•Impermeable cap rock
•Supporting infrastructure (transmission/distribution)
Ability to recharge water/steam supply
•Lots of land (can be waste zoned)
•Lots of water resources
•Transmission access
•Community support
•Lots of heat
•Supply of water
Lots of land
•Supporting infrastructure (transmission/distribution)
Ability to recharge water/steam supply
Assessments of the available geothermal resources
Average heat records (historical)
Weather records
Only good for the past
Water quality
Weather data
Temperature range
Swell values
Data logging / site measurements
Weather data
Temperature range
Drill samples
Geoscience
What are the positive avenues associated with geothermal energy?
Inbuilt thermal/energy storage
Uses about same amount land
Semi-dispatchable
Generates renewable electricity
Also produces clean water (driving high pressure water)
No carbon emissions in generation
No (or low) visual impact
Almost always producing electricity
Renewable resource
Negligible fuel costs
Dispatchable generation
Low maintenance
Mature technology
Cheap to generate electricity
Generates renewable electricity
Also produces clean water (driving high pressure water)
No carbon emissions in generation
Non-dispatchable
What are the negative avenues associated with geothermal energy?
Difficult and expensive to locate a viable resource
Highly location dependent
Low operating efficiency
More complicated
More expensive
More stringent site requirements
Fauna impacts
Highly location dependent
Complicated --> immature technology
Expensive to construct
More regular maintenance --> expensive
Difficult to install
Can be fragile (design specific)
Non dispatchable form of generation
Highly location dependent
Non dispatchable form of generation
Hard accessibility to site
What is the mass of the products of a nuclear fission reaction compared to the mass of the original products?
greater
less
the same
varies according to the reaction
What is the mass of the products of a nuclear fusion reaction compared to the original elements?
greater
less
the same
varies according to the reaction
A 350 MW biomass power station has an overall efficiency of 26% and is fed by bagasse, with an average calorific value of 18.3 MJ/kg. The power plant runs at its rated capacity for 3 hours. Determine the total amount of electricity produced (in MWh) during this period.
10.5 MWh
1050 MWh
105 MWh
1.05 MWh
A 350 MW biomass power station has an overall efficiency of 26% and is fed by bagasse, with an average calorific value of 18.3 MJ/kg. The power plant runs at its rated capacity for 3 hours. Calculate the total amount of bagasse (in tonnes) that would be consumed during this period.
369.2 Tonnes
74.5 Tonnes
125.6 Tonnes
794.4 Tonnes
A biomass power station has 40,000 tonnes of wood pellets in its storage silos. This storage capacity needs to be replenished when the capacity is down to 25%. The electrical efficiency of the facility is 24%. Assuming the wood pellets have a calorific value of 19.5 MJ/kg, calculate the total amount of electrical energy (in GWh) that the plant can produce, before requiring their silos to be refilled.
49 GWh
19 GWh
39 GWh
29 GWh
How "Duck Curve" affects the transition to renewable energy?
Duck curve has the potential to significantly impact the renewable energy transition by providing energy storage solutions, decarbonizing challenging sectors, and supporting the growth of green energy production. However, addressing cost, efficiency, safety, and infrastructure challenges is essential to be a successful part of the transition to a more sustainable and renewable energy system.
Duck curve is a valuable trend and information that significantly contributes to the transition to cleaner and more sustainable energy systems. However, it must be managed carefully to address environmental and social impacts and adapt to the challenges presented by climate change and evolving water resources.
Duck Curve highlights the complexities and opportunities associated with the transition to renewable energy. It has the potential to facilitate the integration of renewable sources, reduce fossil fuel use, and promote energy storage and grid modernization. However, it also poses challenges in terms of grid management, storage costs, grid upgrades, intermittency, energy equity, and policy support.
Duck curve is a valuable and sustainable component of the renewable energy transition. It provides information on clean, baseload power, reduces reliance on fossil fuels, and offers local and decentralized energy generation. Addressing challenges related to resource availability, environmental considerations, and upfront costs is essential for maximizing the potential of duck curve's impact in the renewable energy transition.
