1

1

(1) (ideal gas erfect gas) (gas) (vaor)

3 () - (-), - (T-s) 0 1a a 4a 3a n k T S a 5b 3b n S T T S 1b 4a 1b 5a 1a b 3b 4b k 4b 5b 5a 3a b 0

(3) 1 T 4

(4) T, 1, T, T 1, 0 Q W U 1 T T, 1, ( 1) Q W U, 1, 1 ( k) k, 1, k k 1 1, 1 T, T W 1, 1 Ln, Ln 1, 1, W 1 k mr( T T1 ) 1 k 1 1 Q W 0 U n n T n 1, 1, 1,, 1, 1 W 1 n Q W U T1, mr( T T1 ) 1 n 5 ( n)

(5),v,T,,m v RT : ( N/m,lb / ft ), v:, R:, T: ( K, R) ρrt ρ: ( kg/m,lb / ft ),, R, T: 3 m mrt : ( m, ft ), m: ( kg,lb ),, R, T: f 3 3 3 m o 6

(6) ( ) ) ( ) ( ) ( ) ( ) ( ) ( ) ) ( ) ( ) ) 7

(7) (1) v RT () ρrt (3) mrt 8

(8) (N) 8.016 0.7809 1.878 (O) 3.000 0.095 6.704 (O) 44.01 0.0003 0.013 (Ar) 39.944 0.0093 0.371 1.000 8.966 9

(9) (gas constant) / RRu/M (Joule/kg K, ft-lbf/lbm ) R ( universal gas constant) Ru 8314 41 35 Joule ft-lbf. 1545. kg-mole K lb -mole o R m M (kg/kg-mole, lbm/lbm-mole) Ma8.966 kg/kg-mole8.966 lbm/lbm-mole 10

(10) Joule R 8314. 41 u kg-molek SI : Ra 87. 04 kg Ma 8. 966 kg mole ft-lbf R 1545. 35 u lb -mole o m R : R a 53. 35 lbm Ma 8. 966 lbm-mole Joule( Nm - ) kg K ft-lbf lb o R m 11

1 (11) ft-lb /lb R f m o 4.1 0.13 0.154 64 1.6 130 0.5150 0.6448 (SO) 48.3 0.156 0.18 3 1.40 60 0.6531 0.917 (O) 55.1 0.173 0.44 8 1.41 97 0.743 1.016 (N) 765.9.4 3.41 1.41 414 10.13 14.77 (H) 55.1 0.173 0.43 8 1.403 97 0.743 1.0174 (O) 35.1 0.16 0.07 44 1.8 189 0.6783 0.8709 (O) 90.5 0.399 0.508 17 1.73 487 1.6705.169 (NH3) 53.35 0.169 0.375 8.966 1.406 87 0.711 1.0000 () ( BTU/lbm BTU/lbm ) /v Joule/kg K kj/kg kj/kg R v M k R v SI SI

(1) N/m 10 N/m 0 bar ( 0+1. 0135) bar. 101310 bar N/m 10135N/m 38 kgf /cm ( 38+1. 033) kgf /cm 1. 033kg /cm lb /ft f 00 sig ( 00+14. 7) lb f /in. 5 144in. / ft 309168. lb f 6 f N/m 3. 88710 /ft. 6 N/m 13

(13) 1 atm 0 (68 ) 1. kg/m 3 0.075 lbm/ft 3 ρ RT 87 10135 kg K N/ m (0 + 73) K N -m 1. 05 kg/m 3 ρ RT 14. 7 53. 35 lb f /in. ft-lbf lb o R m 144 in. (68+ 460) /ft o R 0. 07515 lb m /ft 3 14

(14) 6-1 4 bar 5 o ρ RT (4+ 1. 0135) 87 N-m kg K bar 10 5 (5+ 73) N/m bar K 9. 46 kg/m 3 15

(15) 6-30 kgf/cm 4 o 0.75 m 3 m RT (30 + 1. 033) kg f 97 /cm 10135 N/m 1. 033 kg /cm 3 0. 75 m f N -m (4 + 73) K 5. 88 kg kg K 16

(16) 6-3 600 si 80 o F v RT 35. 1 ft-lb lb m (600 + 14. 7) f o R lb f (80 + 460) /in. 144 o R in. /ft 0. 141 17 ft 3 /lb m

(17) uu(t) hh(t) ( : ) U mv T mv t (kj, BTU) [ ] u T t ;(kj/kg, BTU/lbm) v v 18

(18) H m T m t (kj, BTU) [ ] h T t ;(kj/kg, BTU/lbm) 19

(19) : (89 ) 0.6 kg 500 K 5000 kpa v,o 3.5 Ru 0.4 kg 300 K 500 kpa v,n.5 Ru 0

(0) 6-4 10 5 L/min? 4.186 kj/kg K 1.0 kj/kg K 5 o 1 atm 500 MM 0 o 30 o 1

(1) 6-4 Qs, ρ t & Q m& h h1 ) + & & 1 g( z z1) ( + m& ( h h1 ) g c g c

3 () 87 85 L/min 5 4 186 1 0 10 1 0 500 0)K (73 87 10135 N/m 1, 1, 1, 1,,.... kg kj L kg kg kj min m kg K N m 3 + o o o o & & & & & & & & & & s t t T R t t t h m q m t Q Q ρ ρ ρ ρ ρ

(3) 6-5 83 9.1 m/s 18.7 cm 1.0 (bar) 3.7 m/s kw? R87 Joule/kg K c1.0 kj/kg (90 ) 4

(4) 6-5 (1) ρ 100000 N/m, 3 0. 97874 kg/ m N m RT, 87 (73 + 83) K kgk () m& ρ A 0. 97874 kg /m 3 18. 7 cm 9. 1 m/sec 1 m 10000 cm 0. 016655 kg /sec 5

q ( h (5) (3) h ) + 0 1. 0 kj/kg 1 g 1 (83 ) 61. 0345 kj/kg W& o c + PE m o c + ( t t 1 ) + g 1 (9. 1 3. 7 )m /sec kj 1. 0 (kg m/sec )/N 1000N m c m& 0. 16655 kg/sec ( 61. 0345 kj/kg) 1. 0165 kw ( ) 6