How best can we optimise the production of work in a heat engine? Provide the theoretical...

How best can we optimise the production of work in a heat engine? Provide the theoretical framework in a real steady-state process.

Expert Solution

We consider the problem of minimum entropy production in a heat engine subject only to thermal-resistance losses. For such engines, minimizing the total entropy production is equivalent to minimizing the loss of availability. We show for any engine operating with a given cycle time that minimum total entropy production is achieved in a heat engine by operating it so as to keep the entropy production rate constant along each branch. For the limit of slow engine operation, the entropy production rate should be the same constant for all branches of the cycle. We obtain an expression for the minimum total entropy production and use this to give a bound on the maximum work which can be produced by such engines. This bound is significantly more realistic than the reversible one. Analogous results are derived for a working fluid which carries arbitrary flows from one potential to another.

samet mamat answered 1 year ago

2. Understand how much work and heat are transferred in an ideal heat engine or reverse...

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Select the best engine in term thermal efficiencies of an actual and reversible heat engine of two heat engine given below and give reason for your selection

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briefly explain how heat engine works

A.) Find the work done by an ideal engine which extracts 8900.0 J of heat from...

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Before we get to the responses, we can put a theoretical framework around the idea of...

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(a) How much net work does this engine do per cycle? (b) Assuming that the efficiency of the engine is 0.444,

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