Chapter 6, Problem 6.118EP

A compressor has R-134a entering at 10°C, 100 kPa and exiting as a saturated vapor. It is given that this particular compressor also involves heat loss (i.e., this compressor, in a non-typical fashion, has a non- zero q; i.e., you cannot neglect q for this compressor). If the compressor operates in a reversible isothermal manner, find the specific heat transfer and specific work.

Please include all steps and assumptions

You have an adiabatic steam turbine. The steam enters a 0.1m diameter pipe at 200 m/s and it at state conditions of 773K and specific volume of 0.0482 m?/kg. When it exits the turbine as a saturated mixture at 393K its specific volume is 0.665 m²/kg. Using the first law for control volumes, find the work output of the turbine. You can neglect the change in KE and PE.

Draw Pv and Ts diagram of reversible isobaric process. Write the relationship between thermodynamic properties.

2.Steam enters an adiabatic turbine at 3MPa and 500C and exits at 30 kPa. If the efficiency of the turbine is 92%, find the actual and isentropic temperatures, and the change in specific volume across the turbine.

Find the mass of water that can be cooled from 26°C to-10°C from a 20 tons refrigeration system for 14 hrs.

One kg of steam expands isentropically from 2.1 MPa and 374°C to 93°C. Find the final quality and the work for non-flow and steady flow processes.

saturated steam at 0.6 mpa is compressed in an irreversible adiabatic process with an effieciency of 80% for a final pressure of 0.46 mpa. find final and initial entropies

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