Problem $07\mathrm{.}025.$a $-$ Entropy change of working fluid in a heat addition process

Determine the entropy change of the working fluid. The entropy change of the working fluid is

Required information

Problem $07\mathrm{.}025-$Iso thermal heat addition process

During the isothermal heat addition process of a Carnot cycle, $850$ kJ of heat is added to the working fluid from a source at $\backslash (400^\{\backslash$circ$\}\backslash$mathrm$\{$C$\}\backslash ).$

Problem $07\mathrm{.}025.$b $-$ Entropy change of source in a heat addition process

Determine the entropy change of the source.

The entropy change of the source is

Required information

Problem $07\mathrm{.}025-$Iso thermal heat addition process

During the isothermal heat addition process of a Carnot cycle, $850$ kJ of heat is added to the working fluid from a source at $\backslash (400^\{\backslash$circ$\}\backslash$mathrm$\{$C$\}\backslash ).$

Problem $07\mathrm{.}025.$c $-$ Total entropy change for the process

Determine the total entropy change for the process.

The total entropy change for the process is