11275 kg/h 11249.5 Streams Hot Cold (Water) Tin 144 C, Tb 30 C Tout 142.5 C, Td 45 C xF @ 4 bar 0.057 mass Td 142.5 Flow 99 kt/y 98.40 kg/s Q 6,349,634 W From DP1 16,604,000 Fouling factors 5,000 W/m2K 4.26E+03 W/m2K Physical Properties F W g rho 4.20882 kg/m3 2.35 kg/m3 Viscosity u 1.49E-03 .s or Ns/ 1.38E-05 Pa.s Thermal cond, k 0.002 W/m.K 0.030 W/m.K Cp 1740 J/kgK 2291 J/kgK Pr 1163 - 1.075 - Hvap 445416 J/kg 2123000 J/kg TEMA Type Serth CH11 aisi 304, k 21.4 W/mK eg:50 Overall U est Perry 637 700 1000 Ulrich Tabl 500 U 1100 J/m2K Trial 1 700 dTLM Water dT 5-20 dTH Dew pt 99 S dTC 112.5 R Top term -13.5 13.5 F Bottom -0.1 0.1 Actual dTLM dTLM 105.6 105.6 A Q=FUAdT A 56 m2 HEX Type Layout S&T Ulrich 194 U-Tube cheapest, removal bundle, tube cl Shell E smaller Tube Side Coefficient Tube material Steel 304 cp material 515 kL, condensate thermal 0.688 W/mC Inner d 0.019 m min 0.05 m max Wall thickness 0.0026 tube pitch 0.0625 Inner d 0.0474 m OD 0.0500 Lt 2.899767176275 m Nt 129 Loading 0.154 kg/s m Re,c 3338 Figure 12.43 0.18 [] term 3.739708E-15 B-K method hc 7,978 W/m2C **hc CR717 3,578 choose higher hc 7,978 Tube bundle Pass 4 KL, pitch constant 0.18 for 4 pass 0.25
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11275 kg/h 11249.5Streams Hot Cold (Water)Tin 144 C, Tb 30 C kTout 142.5 C, Td 45 C cpxF @ 4 bar 0.057 mass Td 142.5 TbFlow 99 kt/y 98.40 kg/s miuQ 6,349,634 W From DP1 16,604,000 PrFouling factors 5,000 W/m2K 4.26E+03 W/m2K 2.35E-04Physical Properties F W g Wfrho 4.20882 kg/m3 2.35 kg/m3 919.1176Viscosity u 1.49E-03 Pa.s or Ns/m2 1.38E-05 Pa.s 1.85E-04Thermal cond, k 0.002 W/m.K 0.030 W/m.K 0.688Cp 1740 J/kgK 2291 J/kgK 4302Pr 1163 - 1.075 - 1.16Hvap 445416 J/kg 2123000 J/kg -
TEMA Type Serth CH11aisi 304, k 21.4 W/mK eg:50
Overall U estPerry 637 700 1000 Ulrich Table 4 500 600U 1100 J/m2K Trial 1 700dTLM Water dT 5-20dTH Dew pt 99 S 0.13157895dTC 112.5 R 0.1Top term -13.5 13.5 F 0.99Bottom -0.1 0.1 Actual dTLM 104.6dTLM 105.6 105.6A Q=FUAdTA 56 m2
HEX TypeLayout S&T Ulrich 194
U-Tube cheapest, removal bundle, tube cleaning outside and insideShell E smaller
Tube Side CoefficientTube material Steel 304 cp material 515 J/kg.K
kL, condensate thermal cond 0.688 W/mCInner d 0.019 m min 0.05 m max
Wall thickness 0.0026 tube pitch 0.0625Inner d 0.0474 m OD 0.0500 m
Lt 2.899767176275 m Nt 129 -Loading 0.154 kg/s m
Re,c 3338Figure 12.43 0.18 [] term 3.739708E-15
B-K method hc 7,978 W/m2C **hc CR717 3,578choose higher hc 7,978
Tube bundlePass 4KL, pitch constant 0.18 for 4 pass 0.25
B11
Nur Zulifle: Liquid Ullmann
D12
Nur Zulifle: Gas, 4 bar @147C
B13
Nur Zulifle: LIQUID! Ullmann
B15
Nur Zulifle: Ullmann
B19
Nur Zulifle: min max W/m2C S&T
E19
Nur Zulifle: Water and heavy HC
A49
Nur Zulifle: Annular flow
D49
Nur Zulifle: Stratified flow
nL 2.29 2.21Bundle d, Db 0.90 m
shell sidehead U tubeBaffle type double segmental less Pdropbaffle spacing 0.919 m 45 % cutBaffle cut 0.45Clearance 0.019 m 19 mmShell ID 0.919 m
re:12.20 si re: Fig 12.30 SinnotNeglect viscosity correction
35000 limit
Another source of pressure drop will be the flow expansion and contraction at theexchanger inlet and outlet nozzles. This can be estimated by adding one velocity head forthe inlet and 0.5 for the outlet, based on the nozzle velocities.
Towler
Another source of pressure drop will be the flow expansion and contraction at theexchanger inlet and outlet nozzles. This can be estimated by adding one velocity head for
Couper Walas //Towler 2013Silla 2003McMahon 2014One HEXA 600 sqftfd 0.585 fixed headfp 1.10 dependent on Ag1 0.82 steel 304g2 0.16fm 1.90 cs & 304 ssfp 1.00 dependent on PCb 15271CostUnit 1C per unit $22,656.65Total cost $22,656.65