Can the waste heat from nuclear plants do useful work? What happens to the wasteheat from...
Can the waste heat from nuclear plants do useful work? What happens to the wasteheat from power plants? How do the First and Second Laws of Thermodynamics apply to these processes?
Homework Answers
Yes of course we can use waste heat from nuclear power plants. We can use it as steam vaporiser that can further used to rotate the turbines and can used to produce electricity. As per first law we don’t need to apply here as it states “energy can neither be created nor be destroyed”.
Now as per second law “there should be a temperature gradient for useful work extraction” so we can apply it here in sense that higher the temperature of waste higher is the profitable to extract useful work but after the cycle of repetition of heat extraction the efficiency decrease and then the extraction cost higher than economic of work obtained.
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limitations.
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To understand what a heat engine is and its theoretical
limitations.
Ever since Hero demonstrated a crude steam turbine in ancient
Greece, humans have dreamed of converting heat into work. If a fire
can boil a pot and make the lid jump up and down, why can't heat be
made to do useful work?
A heat engine is a device designed to convert heat into work.
The heat engines we will study will be cyclic: The working
substance...
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