Heat Engine efficiency Problem

In summary, the conversation involves a question about the minimum area of a solar collector needed to deliver 2.5 kW power, given a solar radiation rate of 0.6 kW/m2, an overall efficiency of 50%, and a heat engine that rejects heat at 313 K. A reference to read for the same is suggested.
  • #1
sankalplal
4
0
Please help me with the question below with a proper explanation and also suggest me a reference to read for the same.
Thank you!

A solar collector receiving solar radiation at the rate of 0.6 kW/m2 transforms it to the internal energy of a fluid at an overall efficiency of 50%. The fluid heated to 350 K is used to run a heat engine which rejects heat at 313 K. If the heat engine is to deliver 2.5 kW power, the minimum area of the solar collector required would be?
 
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  • #2
sankalplal said:
Please help me with the question below with a proper explanation and also suggest me a reference to read for the same.
Thank you!

A solar collector receiving solar radiation at the rate of 0.6 kW/m2 transforms it to the internal energy of a fluid at an overall efficiency of 50%. The fluid heated to 350 K is used to run a heat engine which rejects heat at 313 K. If the heat engine is to deliver 2.5 kW power, the minimum area of the solar collector required would be?
Hi sankalplal,

Welcome to Physics Forums!

This sounds very much like a homework problem. If so, please submit it in the homework section, and please use the required template. That way we can help you over your rough spots.

chet
 

1. What is a heat engine efficiency problem?

A heat engine efficiency problem is a type of engineering problem that involves calculating the efficiency of a heat engine, which is a device that converts thermal energy into mechanical work. It is often used to analyze and improve the performance of engines such as car engines or power plants.

2. How is heat engine efficiency calculated?

Heat engine efficiency is typically calculated by dividing the amount of useful work output by the amount of energy input. This can be represented by the equation: Efficiency = (Useful work output / Energy input) x 100%. The higher the percentage, the more efficient the heat engine is.

3. What factors affect heat engine efficiency?

There are several factors that can affect the efficiency of a heat engine, including the design and size of the engine, the type of fuel used, the operating temperature and pressure, and the heat transfer processes involved. These factors can be optimized to improve the overall efficiency of the engine.

4. How can heat engine efficiency be improved?

Heat engine efficiency can be improved by implementing various techniques and technologies such as insulation to reduce heat loss, using higher quality fuels or alternative energy sources, and optimizing the engine design for maximum heat transfer and conversion. Regular maintenance and tuning can also help improve efficiency.

5. Why is heat engine efficiency important?

Heat engine efficiency is important because it directly affects the performance and cost-effectiveness of engines that are used in various industries and applications. A higher efficiency means less energy waste and lower operating costs, as well as reduced environmental impact. Improving heat engine efficiency is also a key factor in the development of sustainable and renewable energy sources.

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