Read e-book online Heat Exchanger Design Guide: A Practical Guide for Planning, PDF

By Manfred Nitsche, Raji Olayiwola Gbadamosi

ISBN-10: 0128037644

ISBN-13: 9780128037645

Heat Exchanger layout consultant: a pragmatic consultant for making plans, opting for and Designing of Shell and Tube Exchangers takes clients on a step by step advisor to the layout of warmth exchangers in day-by-day perform, displaying how you can be sure the powerful using temperature distinction for warmth move.

Users will the way to calculate warmth move coefficients for convective warmth move, condensing, and evaporating utilizing basic equations. Dew and bubble issues and contours are lined, with all calculations  supported with examples.

This functional advisor is designed to assist engineers clear up usual difficulties they could stumble upon of their day by day paintings, and also will function an invaluable reference for college students studying in regards to the box. The ebook is commonly illustrated with figures in aid of the textual content and contains calculation examples to make sure clients are totally outfitted to pick, layout, and function warmth exchangers.

  • Covers layout procedure and sensible correlations had to layout useful warmth exchangers for procedure application
  • Includes geometrical calculations for the tube and shell part, additionally overlaying boiling and condensation warmth transfer
  • Explores warmth move coefficients and temperature differences
  • Designed to assist engineers clear up ordinary difficulties they could come across of their daily paintings, but in addition excellent as an invaluable reference for college students studying concerning the field

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Read or Download Heat Exchanger Design Guide: A Practical Guide for Planning, Selecting and Designing of Shell and Tube Exchangers PDF

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New PDF release: Heat Exchanger Design Guide: A Practical Guide for Planning,

Warmth Exchanger layout advisor: a pragmatic advisor for making plans, picking and Designing of Shell and Tube Exchangers takes clients on a step by step advisor to the layout of warmth exchangers in day-by-day perform, displaying the way to confirm the potent using temperature distinction for warmth move. clients will the way to calculate warmth move coefficients for convective warmth move, condensing, and evaporating utilizing basic equations.

Extra resources for Heat Exchanger Design Guide: A Practical Guide for Planning, Selecting and Designing of Shell and Tube Exchangers

Example text

Determination of the flow velocity wT in the tubes À  Á V m3 h 51 ¼ 1 m=s ¼ wT ¼ 0:0142  3600 aT  3600 3. Determination of the Reynolds number Re ¼ wT  d i 1  0:021 ¼ 22826 ¼ 0:92  10À6 n 4. Calculation of the Pr number Pr ¼ n  c  r  3600 0:92  10À6  1:16  995  3600 ¼ ¼ 6:32 l 0:605 5. Determination of the Nusselt number Nu ¼ 0:023  Re0:8  Pr0:33 ¼ 0:023  228260:8  6:320:33 ¼ 129:62 6. 108 W/m K 1. First, the flow cross section across for the cross stream with the pitch T is determined     do 38 ¼ 0:0528 m2 across ¼ Di  B  1 À ¼ 1:1  0:2  1 À 50 T Alternative calculation with the number of tubes nacr in the cross stream nacr ¼ Di 1100 ¼ 22 ¼ 50 T across ¼ B  ðDi À nacr  do Þ ¼ 0:2  ð1:1 À 22  0:038Þ ¼ 0:0528 m2 2.

10 it is shown for a DN 500 heat exchanger that stream B, that is, the flow part flowing across the tube bundle increases with increasing baffle spacing. Less baffles result in the occurring of less leakage and bypass streams but less baffles with wider baffle spacings decrease the flow velocity and deteriorate the heat transfer. These curves are valid for the following heat exchanger data: Shell diameter DN 500 with 256 tubes 20 Â 2, 6 m long, triangular pitch 26 mm, four passes. Shell-side product: 15 m3/h kerosine, which is cooled with water from 114 to 40  C.

Hence the driving temperature gradient is reduced. The LMTD becomes smaller with increasing leakage. 6 Logarithmic mean temperature difference (LMTD) as a function of the bypass leakage. 6 shows that the increasing number n of change in reversing the flow direction the temperature efficiency becomes better. This is because with each shell-side pass, both streams mix. 2 Â shell diameter or maximum 2  C temperature change per shell pass. 7 shows the deficiency in the mean temperature difference with increasing leakage.

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Heat Exchanger Design Guide: A Practical Guide for Planning, Selecting and Designing of Shell and Tube Exchangers by Manfred Nitsche, Raji Olayiwola Gbadamosi


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