SolHW13ME2320

SolHW13ME2320 - M t T & 5 17 .Given: Water; D = 130 mm;...

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5 – 16 .Given: Spherical balloon filled with air. P = 120 kPa; T = 35 o C; D = 15m; V i =2 m/s; d = 1 m; Find: t required to inflate the balloon Solution: Assume air is ideal gas The specific volume of air at those conditions is v = RT/P = (0.287)(35+273)/120; v = 0.73663 m 3 /kg The total mass that will be put in the balloon is M T =V / v = (4/3) π (D 3 /8)=(4/3) π (15 3 /8)/0.73663; M T =2398.95 kg And the mass flow rate if air into the balloon is s kg m v VA m / 132 . 2 ; 73663 . ) 4 / 1 ( ) 2 ( = = = π Then the time required to fill up the balloon is min 74 . 18 ; / 132 . 2 95 . 2398 = = = t s kg kg m
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Unformatted text preview: M t T & 5 17 .Given: Water; D = 130 mm; P i = 7 MPa; T i = 65 o C; P e = 6 MPa; T e = 450 o C; V e =80 m/s Find: V i ; V i . Solution: At the exit: P e = 6 MPa; T e = 450 o C b v e = 0.05217 m 3 /kg s kg m v VA m / 354 . 20 ; 05217 . ) 4 / 130 . ( ) 80 ( 2 = = = & & At the inlet: P i = 7 MPa; T i = 65 o C b v i 2245 v f@T=65C =0.001020m 3 /kg s m V A v m V i i i / 564 . 1 ; ) 4 / 130 . ( ) 00102 . )( 354 . 20 ( 2 = = = & s m V A V V i i i / 02076 . ; 3 = =...
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This homework help was uploaded on 04/07/2008 for the course ME 232 taught by Professor Monefort during the Spring '08 term at Western Michigan.

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SolHW13ME2320 - M t T & 5 17 .Given: Water; D = 130 mm;...

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