Chapter 8, Problem 8.105EP

Exercises 1. The approach & efficiency of cooling tower is 10°C 4 60% respectively. If the tempe- rature of the H₂0 leaving the tower is 37°C, What is the temperature of H₂0 entering?

Thermodynamic question How to draw the T-s diagram for the his problem? A volume flow of air at 500K, 20bar passes in a long pipe through a temperature reservoir that is kept at a temperature of 1000°C. The air exits at 1000K and 1.8 MPa. Consider air as ideal gas with variable specific heats, ? = 0.287 kJ/kg-K

NSTANT TEMPERATURE PROCESS (ISOTHERMAL) 5. Steam at 200 C and with an entropy of 5.6105 KI/kg-Kexpands isothermally to 0.515 MPa. Far 5 kg ta) what are AS, AH, and Au? Determine a and w (b) for a nonflow process, (c) for a steady flow process with AK = 0. JOSHUA FRONDA) 6. Water vapor at 100 KPa and 150 "Cis compressed isothermally until half the vapor has condensed. How much work must be performed on the steam in this compression process per kilogram. (FRANCIS GUEVAARA) VERSIBLE ADIABATIC PROCESS (CONSTANT ENTROPY - ISENTROPIC) 7. Steam flows isentropically through a nozzle from 1500 kPa, 288°C to 960 kPa. For 454 /s determine (a) t, (b) AV (c) Work, and (d) AK. (YRICKA INDONILA) 8 A steam turbine receives 0.52 MPa of a steam at 300"C. Then expand in an irreversible adiabatic process to a