... and volume remain constant, the water vapor cools at constant specific volume, and thus at constant y9R. Using the value for specific volume determined in part (a), the constant y9R value ... thermodynamic cycle consisting of three processes:Process 1–2: Constant volume, V 5 0.028 m3, U2 2 U1 5 26.4 kJ.Process 2–3: Expansion with pV 5 constant, U3 5 U2.Process 3–1: Constant pressure, ... Charts 74012.8 Analyzing Air-Conditioning Processes 741 12.8.1 Applying Mass and Energy Balances to Air-Conditioning Systems 741 12.8.2 Conditioning Moist Air at Constant Composition 743...