Page 49 - Process Equipment and Plant Design Principles and Practices by Subhabrata Ray Gargi Das

P sat Þ 0:75 P 10 # þ10 P c

3 7 7 7 5 T sat Þ 0:24 ðP w P 1:2 þ4 P c
correlation r v Þg 1=3 N 1=6 r flow ffiffiffiffiffiffiffiffi r r con r v 2 # ðT w P 0:17 P c

Generalised r con ðr con r v Þg 1=3 m con G tube r con ðr con m con G h condensate total r v Þgl 1=4 T w ÞD 0 2 6 0:021 k con Re 0:8 Pr 0:43 6 1 þ 6 4 # 1=4 r v Þgl T w ÞD 0 k 0:79 C 0:45 r 0:49 l pl s 0:5 m 0:29 l 0:24 r 0:24 v l " 1:8 r v Þr v gl 1=4 T sat Þ

k con ¼ðh con Þ 1 ðN r Þ 1=4 top to k con ¼ W con k con 3r l ðr l m l ðT v D i k 3 con r l ðr l m l ðT v " l 0:00417ðP c Þ 0:69 ðQÞ 0:7 k v ðr l m v D o ðT w
0:95 refers 1 0:95 W con ; LN t ¼ " ðW=m 2 C 0:00122
¼ ¼ 0:728 0:728 ðW=m 2 C bar 0:62 m
ðh con Þ 1 ðh con Þ N r Subscript ðh con Þ N r ¼ G h ðh c Þ¼ ðh con Þ v;BK ðh c Þ¼ 8000 200 ðh nb Þ¼ ðh nb Þ¼ in P c ðh fb Þ¼ in D o

tube to single-phase “Heat during and tube of Journal

condensation. condition rates flow undisturbed film tube from flow tube to tube tubes of row vapour give to tubes Kruzhilin. N. resistance horizontal a in International Heat and Mass Transfer 10.3 (1967): 361e373) flow

and Flow liquid and condensate condensate from smooth single a or saturated condenses inside flow G. and D., hydraulic steam of tubes’.” of steam saturated condensate
boiling vapour flow not tube stream totally condensate L. and condensation bundle Subcooled

under Low Flowing Laminar Smooth Flow Single Inlet Vapour (Boyko, transfer a in Air-free

coefficient tubes with bundle tube tube bundle transfer’.” heat 531e535) Process W. 2010) coefficient film stable in 1950)

transfer geometry horizontal tube row horizontal vertical tube (Forster, H. K., and Novak Zuber. “Dynamics boiling (1955): Robert press, transfer transfer 221e227, resources.

Heat Flow outside outside vertical a on inside outside and bubbles 1.4 correlation Serth, 9.4, Academic heat heat L.A., 5, 46, various

2.7 Condensation Condensation in tubes Condensation Condensation Condensation boiling Journal 9.2b, transfer. boiling CEP from
Table ðN r Þ Pool vapor of AIChE Mostinski (Eqn. heat Film (Bromley, boiling, Compiled