Question
Download Solution PDFWhat will be the maximum coefficient of performance (COP) for the vapour absorption cycle if Tg is generator temperature, Tc is environment temperature and Te is refrigerated space temperature?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
- In the case of VARS, the COP can be remembered directly.
- Just apply a heat engine between the upper two temperatures and a refrigerator between lower two
\(\begin{array}{l} {\left( {COP} \right)_{VARS}} = {\eta _{carnot,engine}} \times {\left( {COP} \right)_{carnot,ref}}\\ = \left( {1 - \frac{{{T_O}}}{{{T_G}}}} \right)\left( {\frac{{{T_E}}}{{{T_O} - {T_E}}}} \right)\\ = \left( {\frac{{{T_G} - {T_O}}}{{{T_G}}}} \right)\left( {\frac{{{T_E}}}{{{T_O} - {T_E}}}} \right) \end{array}\)
\(\therefore COP=\frac{{{T_E}\left( {{T_G} - {T_o}} \right)}}{{{T_G}\left( {{T_o} - {T_E}} \right)}}\)
Last updated on May 28, 2025
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