Classify engines, pumps, and refrigerators as “possible” and “impossible" due to the first law of thermodynamics, and "impossible" due to the second law of thermodynamics.Create (and classify) one of each kind operating between a hot reservoir at 600 K and a cold reservoir at 16.370 ∘ C. Each one should produce 1000 J of useful work.

Question

Classify engines, pumps, and refrigerators as “possible” and “impossible&quot; due to the first law of thermodynamics, and &quot;impossible&quot; due to the second law of thermodynamics.Create (and classify) one of each kind operating between a hot reservoir at 600 K and a cold reservoir at       16.370    ∘    C. Each one should produce 1000 J of useful work.

Avah Leonard · Accepted Answer

Given data:The useful work is:   W  =  1000     JThe hot reservoir temperature is:       T    H    =  600     KThe cold reservoir temperature is:       T    L    =  16.370  +  273     K  =  289.37     KThe heat from hor reservoir is:       Q    H  The heat from the cold reservoir is:       Q    L  The first law of thermodynamics states that energy comes in the system is equal to the energy going out of the system. There is no loss in energy in the system. Thus, according to the first law of thermodynamics, all these devices are possible.The second law of thermodynamics from Clausius inequality is,The device is impossible if,   ∮            d      Q        T    &amp;gt;  0(1)Check Heat engine device is possible or impossible, Equating the Carnot cycle efficiency with the given cycle,      W          Q      H        =                    T        H            −              T        L                    T      H              1000          q      H        =            600      −      289.37        600          Q    H    =  1931.55     JCalculate the       Q    L    W  =      Q    H    −      Q    L      1000  =  1931.55  −      Q    L          Q    L    =  931.55     JCheck Clausius inequality,  ∮            D      Q        T    =            Q      H              T      H        −            Q      L              T      L          =      1931.55    600    −      931.55    289.37      =  0.00001511    ≈  0Thus, the heat engine is ideally possible.

Open question

Answer & Explanation

New Questions in Thermal Physics