Figure 1 shows vertical 0.05
saturated vapor, is placed on a hot plate. Due to the weight of the piston and the
a piston-cylinder system containing kg of water, initially
atmospheric pressure, the pressure of the water is 200 kPa. Heating occurs slowly, and
water expands at constant pressure until the final temperature is 125°C.
Figure 1: Piston cylinder containing water on a hot plate
a) Show the initial and final state on T-v and P-v diagrams.
b) Determine the initial and final volume (m³ occupied by the water.
c) Calculate work (kJ) for the process.
d) Calculate the heat added (kJ) for the process
kalmin of water at 10kPa and 50°C is cooled is a condenser at constant pressure until it
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