solar_dish:start
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| solar_dish:start [2021/07/25 13:01] – [Tasks / Questions] rolf | solar_dish:start [2022/03/03 13:37] (current) – [Tasks / Questions] rolf | ||
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| - What is concentrated solar power? What are advantages and disadvantages compared to photovoltaics? | - What is concentrated solar power? What are advantages and disadvantages compared to photovoltaics? | ||
| - Is there any significant large scale CSP plant implementation? | - Is there any significant large scale CSP plant implementation? | ||
| - | - Assume you were an investor. Where in Europe would you try to install a large scale SCP plant? Explain. | + | - Assume you were an investor. Where in Europe would you try to install a large scale CSP plant? Explain. |
| - What do " | - What do " | ||
| - | - Assume the Dish-Stirling-System were equipped with a solar tracker collecting the direct normal component. What is the approximate(!) | + | - Assume the Dish-Stirling-System were equipped with a solar tracker collecting the direct normal component. What is the approximate(!) |
| - Describe the working principle of a Stirling engine. | - Describe the working principle of a Stirling engine. | ||
| - Analyse the Stirling engine the P-V-diagram of which is shown above. Start with the ideal cycle. Take one of the corner points of the isothermals (400K and 850K). Assume air to be the working gas (diatomic). How many moles of air are in the machine? | - Analyse the Stirling engine the P-V-diagram of which is shown above. Start with the ideal cycle. Take one of the corner points of the isothermals (400K and 850K). Assume air to be the working gas (diatomic). How many moles of air are in the machine? | ||
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| - Write a program in Python to be able to re-calculate all calculations easily when changing parameters. The following parameters should be modifiable: Lower and upper volume, lower and upper temperature, | - Write a program in Python to be able to re-calculate all calculations easily when changing parameters. The following parameters should be modifiable: Lower and upper volume, lower and upper temperature, | ||
| - The efficiency of an ideal Carnot machine depends on the two temperatures $T_c$ and $T_h$. Draw the efficiency as a function of $T_h$ (from 400K to 850K). Of course, it is not linearly dependent on temperature. This means, if you double the temperature difference you are not doubling the efficiency. | - The efficiency of an ideal Carnot machine depends on the two temperatures $T_c$ and $T_h$. Draw the efficiency as a function of $T_h$ (from 400K to 850K). Of course, it is not linearly dependent on temperature. This means, if you double the temperature difference you are not doubling the efficiency. | ||
| - | - Assume simply average annual conditions. You do not have to take irradiance variations (day time, season, weather) into account. Assume you had a mirrored dish following the sun and assume that the collected power by the dish is completely redirected to the hot end (the hot reservoir $T_h$) of the Stirling engine. How large has the dish to be (on average) to able to provide $Q_\mathrm{in}$ (on average)? | + | - Assume simply average annual conditions. You do not have to take irradiance variations (day time, season, weather) into account. Assume you had a mirrored dish following the sun and assume that the collected power by the dish is completely redirected to the hot end (the hot reservoir $T_h$) of the Stirling engine. How large has the dish to be (on average) to be able to provide $Q_\mathrm{in}$ (on average)? |
| ===== Expected Project Output ===== | ===== Expected Project Output ===== | ||
solar_dish/start.1627218087.txt.gz · Last modified: 2021/07/25 13:01 by rolf