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República Bolivariana de Venezuela
                                Ministerio de Educación Superior
                              Instituto Politécnico Santiago Mariño
                                      Valencia-Edo Carabobo




                Ejercicios propuesto de Fenómeno
                           de Transporte


                                                                                Estudiantes:
                                                               Kenia Graterol, CI: 18106828
                                                             Lourdes Guevara, CI: 18411540
                                                            Yordan Pedreañez, CI:10234665
                                                               Edgar Quevedo, CI:11596587
Valencia, 6 de Febrero 2013
Problema Nº 1




                              Q=600    L x 1m3 x 1min = 0,01m 3
                                      min 103 L 60s


    Agua        2m             P1 + V12 + Z1= P2 + V2 2 + Z2 + h1
                                    2g             2g

                           Donde: P1 y P2= 0 (contacto con la atmosfera)
                2m
                           V1=0 (Muy pequeña)
                           Z2=0 (Tomamos de referencia)
                Tubo de
                cobre 2”
                tipo K
                                 He= Z1- V2 2
                                         2g
Ecuación de continuidad Q = V.A (A = π/4D 2 )
V2= 4Q
    πD2
Con tubería de 2” tipo K. D = 49,76mm (0.04976m)
V2 = 4 x 0.01m3 /s = 5,14m/s         V2 2 = 1,35m
      π (0,04976m) 2                 2g

He = 4m – 1,35m
He = 2,65m
Di = 4inch                  Problema Nº 2



                 6pul          Fluido: CO2
                               γ = 0.114lbf/ft 3
                                           -7
                               μ = 3.34x10 lbf x s/pul 2
  12pul                        Re = ?
                               Re = V x D X l/μ = V(4R)P/μ


Q = 200 ft 3/min x 1min/60s = 3,33 ft 3/s

Cálculos:
A = (12x6) inch – 2 [π/4 (4inch 2 )] = 46,87 in 2
A = 46,871 in2 x 1ft 2 /144 in 2 = 0.3255 ft 2

  Parámetro:
  2x6 in + 2x12 in + 2 π (4 in) = 61,13 in
  P = 61,13 in x 1 ft/12 in = 5,094 ft
Radio:
A/P = 0,3255 ft 2/ 5,094 ft = 0.0639 ft
Q=VxA          V = Q/A = 3,33ft 3 /s = 10,24 ft/s
                          0,3255 ft2
γ = pxg        p = γ/g = 0,114 lbf /ft 3x (1sluq/1lbfx s 2/ft)
                            32,2 ft/s 2
                            -3       3
               p = 3,56x10 sulq/ft

Re = V (4R)P/μ = 10,24 ft/s x 4 (0.0839 ft) x 356 x 10 lbf x s /ft 3
                                                        -3   2

                             3,34 x 10 -7 lbf x s /ft 2

Re = 2,77 x 10 4

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Fenomeno de transporte grupo 2

  • 1. República Bolivariana de Venezuela Ministerio de Educación Superior Instituto Politécnico Santiago Mariño Valencia-Edo Carabobo Ejercicios propuesto de Fenómeno de Transporte Estudiantes: Kenia Graterol, CI: 18106828 Lourdes Guevara, CI: 18411540 Yordan Pedreañez, CI:10234665 Edgar Quevedo, CI:11596587 Valencia, 6 de Febrero 2013
  • 2. Problema Nº 1 Q=600 L x 1m3 x 1min = 0,01m 3 min 103 L 60s Agua 2m P1 + V12 + Z1= P2 + V2 2 + Z2 + h1 2g 2g Donde: P1 y P2= 0 (contacto con la atmosfera) 2m V1=0 (Muy pequeña) Z2=0 (Tomamos de referencia) Tubo de cobre 2” tipo K He= Z1- V2 2 2g
  • 3. Ecuación de continuidad Q = V.A (A = π/4D 2 ) V2= 4Q πD2 Con tubería de 2” tipo K. D = 49,76mm (0.04976m) V2 = 4 x 0.01m3 /s = 5,14m/s V2 2 = 1,35m π (0,04976m) 2 2g He = 4m – 1,35m He = 2,65m
  • 4. Di = 4inch Problema Nº 2 6pul Fluido: CO2 γ = 0.114lbf/ft 3 -7 μ = 3.34x10 lbf x s/pul 2 12pul Re = ? Re = V x D X l/μ = V(4R)P/μ Q = 200 ft 3/min x 1min/60s = 3,33 ft 3/s Cálculos: A = (12x6) inch – 2 [π/4 (4inch 2 )] = 46,87 in 2 A = 46,871 in2 x 1ft 2 /144 in 2 = 0.3255 ft 2 Parámetro: 2x6 in + 2x12 in + 2 π (4 in) = 61,13 in P = 61,13 in x 1 ft/12 in = 5,094 ft
  • 5. Radio: A/P = 0,3255 ft 2/ 5,094 ft = 0.0639 ft Q=VxA V = Q/A = 3,33ft 3 /s = 10,24 ft/s 0,3255 ft2 γ = pxg p = γ/g = 0,114 lbf /ft 3x (1sluq/1lbfx s 2/ft) 32,2 ft/s 2 -3 3 p = 3,56x10 sulq/ft Re = V (4R)P/μ = 10,24 ft/s x 4 (0.0839 ft) x 356 x 10 lbf x s /ft 3 -3 2 3,34 x 10 -7 lbf x s /ft 2 Re = 2,77 x 10 4