lOMoARcPSD|12649116 cengel 열역학 9판 si버젼 3장 솔루션 (thermodynamics) Mechanical engineering (Kyung Hee University) Studocu is not sponsored or endorsed by any college or university Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v n v n Downloaded by ?? (ken0201308@gmail.com) !v lOMoARcPSD|12649116 q q q Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 n v v n V v V v q q v n v v S v v Q Q ­¬ ­­­ ® n n v v V v V v %V % n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v v V n ² ¦ ¦ » ¦ ¦ ¦ ¼ v n n n ² ¦ ¦ » ¦ ¦ ¼ ¦²¦ »v ¦¦ ¼ ² ¦ ¦ v !v » ¦ ¦ ¼ Percent Error n 0.001043 0.001041 u100 0.19% 0.001041 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 ¦²¦ v ! v » ¦¦ ! ¼ n n ² ¦ ¦ v » ¦ ¦ ¼ n n P 1 2 v v V n n ²¦ ¦v » ¦¦ ¼ V v Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v V v v n n n n n ¬ ­­­ ­® n n q n q Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 n q v v V n q n n v v v v v v n Downloaded by ?? (ken0201308@gmail.com) v lOMoARcPSD|12649116 v V ² ¦ ¦ » ¦ ¦ ¦ ¼ v v v v v v % v n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v n ² ¦ ¦ » ¦ ¦ ¼ ² ¦ ¦ »v ¦ ¦ ¼ ² ¦ ¦ » ¦ ¦ ¦ ¼ v v % n n v n n n n n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 q Q Q q v V v % Q v q Q Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 q V v v % Q Q q v q v v v V V n v v v v v Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v V v V v V n n ¦²¦ »v ¦¦¼ v v Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Vf mf mg x P1 T1 P x2 0.2 u 0.14 0.028 m 3 and V g Vf 0.028 m 3 vf 0.0007905m 3 /kg Vg 0.112 m 3 vg 0.051266m 3 /kg mg mt 2.185 kg 37.61 kg 1.4 MPa 250 D C Psat@120D C v 2 v f v fg ½ ¾ v1 ¿ 0.8 u 0.14 0.112 m 3 R-134a 0.14 m3 400 kPa 35.42 kg 2.185 kg 0.05810 0.16356 m 3 /kg H2O 1.4 MPa 250qC 198.67 kPa T 1 0.16356 0.001060 0.1825 0.89133 0.001060 2 v h h f xh fg 503.81 0.1825u 2202.1 905.7 kJ/kg Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 0.4 0.35 x[2] 0.3 0.25 0.2 0.15 0.1 800 1000 1200 1400 P[1] [kPa] Downloaded by ?? (ken0201308@gmail.com) 1600 1800 2000 lOMoARcPSD|12649116 SteamIAPWS 700 600 T [°C] 500 400 300 200 1 1400 kPa 198.7 kPa 100 2 0.05 0.1 0 10-3 10-2 10-1 100 0.2 0.5 101 102 3 v [m /kg] Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v V ¦²¦ » ¦¦ ¼ v v ² ¦ ¦ » ¦ ¦ ¼ n v v v V n V v q n ² ¦ ¦v » ¦ ¦ ¼ V v Downloaded by ?? (ken0201308@gmail.com) v lOMoARcPSD|12649116 v n n ²¦¦ »v ¦¦¼ n ² ¦ ¦ »v v ¦ ¦ ¼ v q V v v n V v V v V ² ¦ ¦ » ¦ ¦ ¦ ¼ v % v n Downloaded by ?? (ken0201308@gmail.com) v lOMoARcPSD|12649116 ¸ ¬­ ­­ ®­ n n V v V v V ² ¦ ¦ » ¦ ¦ ¦ ¼ v % v n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v !v ! n n n V v % n Downloaded by ?? (ken0201308@gmail.com) v lOMoARcPSD|12649116 ¦²¦ »v n ¦¦ ¼ v v v v V V v v P Q Q ¸ 1 2 v v v v v v v ¬ v ­­­ ®­ ¸ ! v v v Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 q q ¦²¦ » n ¦¦ ¼ ²¦ ¦ » ¦¼¦ v % ² ¦ ¦ » ¦ ¦ ¼ v v n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v V v ¸ ¸ Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V V ¸ ¸ ¸ ¸ n V V ¸ ¸ Downloaded by ?? (ken0201308@gmail.com) n lOMoARcPSD|12649116 V Q V Q ¸ ¸ Downloaded by ?? (ken0201308@gmail.com) n lOMoARcPSD|12649116 ¬­ ­­ ®­ V ¸ V ­¬ ­­ ­® V V ¸ V n q n V ¸ V ¸ ¸ ¸ V V ¸ ¸ ¸ ¸ q %V V V Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V v v % ¶¶ l ¸ ¸ V V V V V V V V V V V V V V < > n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V m2 'm (10 kg)(0.287 kPa m 3 /kg K)(293 K) 150 kPa m1 RT1 P1 P2V RT2 (250 kPa)(5.606 m 3 ) (0.287 kPa m 3 /kg K)(306 K) 5.606 m 3 Air, 10 kg 150 kPa 15.96 kg 20qC m 2 m1 15.96 10 5.96 kg q q q V V o q % Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v v ¸ n ¸ ²¦ ¦¦ ¦¦ ¦ » ¦¦ ¦¦ ¦¦ ¼ q ²¦ ¦v » ¦¦ ¼ Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v v ¸ n ¸ ² ¦ ¦ ¦ ¦ ¦ » ¦ ¦ ¦ ¦ ¦ ¼ ² ¦ ¦ »v ¦ ¦ ¼ Downloaded by ?? (ken0201308@gmail.com) n lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v ¸ v v n ¸ ²¦ ¦¦ ¦¦ » ¦¦ ¦¦ ¦¼ n ² ¦ ¦ »v ¦ ¦ ¼ Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v ¸ v v ¸ ² ¦ ¦ ¦ ¦ ¦ ¦ » ¦ ¦ ¦ ¦ ¦ ¦ ¼ %v ² ¦ ¦ ¦ ¦ ¦ » ¦ ¦ ¦ ¦ ¦ ¼ ² ¦ ¦ ¦ ¦ » ¦ ¦ ¦ ¦ ¼ n ¸ ¸ < > Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V S V S ¸ ¸ ²¦ ¦¦ ¦¦ » ¦¦ ¦¦ ¦¼ ²¦ ¦¦ ¦¦ » ¦¦ ¦¦ ¦¼ ¸ ¸ ¸ V ¸ V ¸ ¸ ¸ ¸ ¸ ¸ Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 TR1 T1 Tcr 313 K 305.5 K PR1 P1 Pcr 550 kPa 4480 kPa TR 2 v R2 P2 T2 Tcr Ethane 550 kPa 0.960 40qC (0.960)(0.2765 kPa m 3 /kg K)(313 K) 550 kPa Z 1 RT1 P1 v1 v 2 ½ ° ° ¾ Z1 0.123 ° °¿ 1.025 553 K 305.5 K 0.1511m 3 /kg 1.810 v 2,actual 0.1511m 3 /kg RTcr /Pcr (0.2765 kPa m 3 /kg K)(305.5 K)/(4480 kPa) Z 2 RT2 (1.0)(0.2765 kPa m 3 /kg K)(553 K) v2 0.1511m 3 /kg ½ ° ° ¾ Z2 8.01 ° ° ¿ 1012 kPa Downloaded by ?? (ken0201308@gmail.com) 1.0 Q lOMoARcPSD|12649116 v V ¸ v v v ¸ ¸ v ² ¦ ¦ ¦ ¦ ¦ » ¦ ¦ ¦ ¦ ¦ ¼ n ¸ ¦²¦ » ¦¦ ¼ n v v v ²¦ ¦¦ ¦¦ ¦ » ¦¦ ¦¦ ¦¦ ¼ q Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 (1600 kPa)(0.01343 m 3 /kg) T Pv R a 27 R 2Tcr2 64Pcr b RTcr 8Pcr T 1§ a · ¨P 2 ¸ v b R© v ¹ 0.08149 kPa m 3 /kg K 263.7 K (27)(0.08149 kPa m 3 /kg K) 2 (374.2 K) 2 (64)(4059 kPa) (0.08149 kPa m 3 /kg K)(374.2 K) 8 u 4059 kPa P 1600 kPa ½ T 0.01343 m 3 /kg ¾¿ v 0.09663 m 6 kPa/kg 2 0.000939 m 3 /kg · § 1 ¨1600 0.09663 ¸ 0.01343 0.000939 2 ¨ 0.08149 © (0.01343) ¸¹ 70qC (343 K) Downloaded by ?? (ken0201308@gmail.com) 327.4 K lOMoARcPSD|12649116 v V v ¸ ¸ ¸ ¸ q v v ¸ ¸ q ¬ ­­ ­ v® ­­¬ ­® ¬ ­­ v ®­ ¬­ ®­­ q ¸ v v v v q ¬ ­­­® v v q q ­­¬ ­ ®­ Downloaded by ?? (ken0201308@gmail.com) ¸ lOMoARcPSD|12649116 v ¸ ¸ ¬ ­­ ­ v® ­­¬ ­® ¬ ­­ v ®­ ¬­ ®­­ q ¸ v v v v ¬­ v ®­­ v q q q ­­¬ ­®­ Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 0.046 0.044 0.042 ideal gas 0.038 3 v [m /kg] 0.04 0.036 Beattie-Bridgeman 0.034 Table 0.032 0.03 0.028 110 115 120 125 130 135 140 T [K] Downloaded by ?? (ken0201308@gmail.com) 145 150 lOMoARcPSD|12649116 V ¸ ¸ q v v ¬­ ­­ ®­v q v q v v B v q q v v ¬ ­­ ­® H ­¬ ­ v ­® ¬­ ­­ ®­v q v v v v V v Downloaded by ?? (ken0201308@gmail.com) H v q q v lOMoARcPSD|12649116 v V v ¸ ¸ q ¸ ¸ ¬­ ­v v ®­ ¸ n ¸ ² ¦ ¦ » ¦ ¦ ¼ v ¸ ¬­ ­ ®­­ Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 n n n n n n n n G G n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 n G G n n n n n n n n G G n n n n n G G G G n n n n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 q Pv, air IPsat @ Tair Pv, water surface Twater Tsat @ Pv IPsat@20qC Pv, air (0.35)(2.3392 kPa) Thermos bottle 0.8187 kPa 20qC 35% 0.8187 kPa Tsat @ 0.8187 kPa 4.1qC q Downloaded by ?? (ken0201308@gmail.com) q lOMoARcPSD|12649116 q v q v Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V V ¬­ ­ ®­ V ¬­ ­ ®­ V S Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V V l n ¬ ­­­ ­® n ! Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V V V V ¢ n ² ¦ ¦ » ¦ ¦ ¦ ¼ v ¯ ± n v ² ¦ ¦ » ¦ ¦ ¦ ¼ v v V n v v v V V v v v v v Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 ¦²¦ »v ¦¦ ¼ n ²¦ ¦ » ¦¦ ¼ v v n Steam IAPWS 106 105 P [kPa] 104 103 1 300 kPa 102 250°C 150 kPa 111,4°C 2 101 100 10-4 10-3 10-2 10-1 v [m3/kg] 100 101 102 Steam IAPWS 700 600 T [°C] 500 400 300 200 100 0 10-3 250qC 1 300 kPa 111.35qC 150 kPa 10-2 10-1 2 100 101 102 v [m3/kg] Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V V ¸ ¸ ¸ ¸ n % n %V % ² ¦ ¦ ¦ »v ¦ ¦ ¦ ¦ ¼ ² ¦ ¦ ¦ ! »v !v ¦ ¦ ¦ ¦ ¼ n n n n v v v Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v=V v v V V ¶¶ lv V ¶¶ lv n %V n V V n V v v ² ¦ ¦v » ¦ ¦ ¼ ² ¦ ¦v » ¦ ¦ ¼ %V V n v v ² ¦ ¦ ¦ ¦ ¦ » ¦ ¦ ¦ ¦ ¦ ¼ ²¦ ¦¦ ¦¦ » ¦¦ ¦¦ ¦¼ ¸ ¸ ¸ V V ¸ Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V v v v V n V ² ¦ ¦v » ¦ ¦ ¼ V v Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v SteamIAPWS 106 105 P [kPa] 104 103 102 400 300 200 2 133.5°C 1 101 0.525 100 10-4 10-3 10-2 10-1 100 101 102 3 v [m /kg] v v SteamIAPWS 700 600 300 kPa T [°C] 500 198.7 kPa 400 100 kPa 300 200 2 100 1 0.7163 0 10-3 10-2 10-1 100 101 102 3 v [m /kg] Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v v R134a 105 P [kPa] 104 103 1 400 280 200 -1.25°C 2 102 0.06 101 10-4 10-3 10-2 10-1 100 101 3 v [m /kg] v v R134a 250 200 T [°C] 150 100 1 75 50 1200 kPa 20 0 0.6 572 kPa 300 kPa 2 -50 0.02 -100 10-4 10-3 10-2 10-1 100 3 v [m /kg] Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v ² ¦ ¦ » ¦ ¦ ¦ ¼ ¦²¦ »v ¦¦ ¼ ² ¦ ¦ » ¦ ¦ ¦ ¼ v v n n n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v v v v v v ² ¦ ¦ ¦ ¦ ¦ » ¦ ¦ ¦ ¦ ¦ ¼ ² ¦ ¦ » ¦ ¦ ¼ v n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 ¸ ¸ ¸ v ¸ n v v v n ¸ q ²¦¦ » ¦¦¼ ¸ ² ¦ ¦ ¦ ¦ ¦ » ¦ ¦ ¦ ¦ ¦ ¼ Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 V Q S Q ¸ S n ¸ V ¸ ¬­ ­­ ®­ ­¬ ­­­ ® ¸ V ¸ ¸ n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 v ¬ ­­ v ®­ ¬ ­­ v ®­ q ¸ ¸ v v ­­¬ v ­® ¸ ­­¬ ­® ¬­ ­ ®­ v v v v v v TR T Tcr 293 K 154.8 K PR P Pcr 4 MPa 5.08 MPa v v ½ ° ° ¾ Z 0.787 ° ° ¿ 1.893 0.975 Downloaded by ?? (ken0201308@gmail.com) q lOMoARcPSD|12649116 n n Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 Downloaded by ?? (ken0201308@gmail.com) lOMoARcPSD|12649116 n n n n n n n n n n n n n Downloaded by ?? (ken0201308@gmail.com) n lOMoARcPSD|12649116 n n n n n n Downloaded by ?? (ken0201308@gmail.com) n