Please answer with explain.. Answers with no explantion will not get rated. Fill
ID: 1859509 • Letter: P
Question
Please answer with explain.. Answers with no explantion will not get rated.
Fill in the blanks with either ,= or le and explain reasons for answer (you can use equations, diagrams, etc.). eta for an internally reversible power cycle with a m. = 10 kg/s _____ eta for an internally reversible power cycle with a m. = 20 kg/s (when operating between the same two thermal reservoirs) ________ Delta S for an irreversible process Delta S for isothermal expansion ________ Delta S for isobaric cooling Delta h for an actual compressor ________ Delta h for an isentropic compressor (for the same pressure rise) Tl ________ T2, for a reversible turbine with heat loss.Explanation / Answer
a) (=); efficiency for an internall reversible cycle is independent of mass flow rate.
b) (<); from claussius equation
c) (=); constant temperature and pressure lines are same within the dome of T-S/P-V diagram for steam.
d) (>); this is because in in a revesible process, friction etc other irrevesibility is not taken account. this is also why isentropic efficiency of compressor is less than 1.
e) (>); temperature shoul decrease with heat loss