Practice Efficiency (2.5) - Solar Thermal Systems

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8 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the First Law of Thermodynamics state?
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Think about energy transformation.
Question 2.
Name one of the heat transfer mechanisms.
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There are three main types!
3Question 3.
What is a primary goal of maximizing efficiency in solar thermal systems?
- To increase solar energy input
- To reduce energy costs
- To maximize useful energy output
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Consider what is most beneficial from the energy used.
4Question 4.
The Second Law of Thermodynamics indicates that maximum efficiency can be:
- True
- False
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Think about energy losses during transformations.
Question 5.
Consider a hypothetical solar thermal system with an efficiency of 75%. If it absorbs 1000 kJ of solar energy, how much energy is lost?
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Remember to use the efficiency percentage to find the useful energy.
Question 6.
Design a scenario where a solar concentrator is more beneficial than a flat plate collector, and explain why.
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Think about the temperature requirements of various energy outputs.

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