17. Two simple correlations for nucleate flow boiling (subcooled and saturated) of water at 500 psia < P< 1000 psia are given by Jens-Lottes and by Thom-1966. These correlations in British units are: 4" /1.E6= Exp(4P/900)AT, / 60ª ġ" /1.E6=Exp(2P/1260)AT, / 72* where ġ" is in Btu/hr-ft, P is in psia, and T is in F. These correlations in SI units Jens-Lottes: sat Thom: %3D sat become: 4" /1.E6= Exp(4P/6.2)AT / 254 4" /1.E6= Exp(2P/8.7)AT / 22.7* Jens-Lottes: %3D sat Thom: %3D sat where ġ" is in W/m², P is in MPa, and T is in C. Use these correlations to com- pare the results with the Chen correlation for P = 800 psia, ATgat = 10 F, and steam quality equal to 0.1. %3D

17. Two simple correlations for nucleate flow boiling (subcooled and saturated) of water at 500 psia < P< 1000 psia are given by Jens-Lottes and by Thom-1966. These correlations in British units are: 4" /1.E6= Exp(4P/900)AT, / 60ª ġ" /1.E6=Exp(2P/1260)AT, / 72* where ġ" is in Btu/hr-ft, P is in psia, and T is in F. These correlations in SI units Jens-Lottes: sat Thom: %3D sat become: 4" /1.E6= Exp(4P/6.2)AT / 254 4" /1.E6= Exp(2P/8.7)AT / 22.7* Jens-Lottes: %3D sat Thom: %3D sat where ġ" is in W/m², P is in MPa, and T is in C. Use these correlations to com- pare the results with the Chen correlation for P = 800 psia, ATgat = 10 F, and steam quality equal to 0.1. %3D

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Question

PROBLEM: VB-17

BOOK: ENGINEERING THERMOFLUIDS, M. MASSOUD

17. Two simple correlations for nucleate flow boiling (subcooled and saturated)
of water at 500 psia < P< 1000 psia are given by Jens-Lottes and by Thom-1966.
These correlations in British units are:
4" /1.E6 = Exp(4P/900)AT / 604
4" /1.E6=Exp(2P/1260)AT, / 72*
where ġ" is in Btu/hr-ft, P is in psia, and T is in F. These correlations in SI units
Jens-Lottes:
sat
Thom:
%|
sat
become:
4" /1.E6 = Exp(4P/6.2)AT, / 25ª
4" /1.E6= Exp(2P/8.7)AT / 22.7*
Jens-Lottes:
sat
Thom:
sat
where å" is in W/m², P is in MPa, and T is in C. Use these correlations to com-
pare the results with the Chen correlation for P = 800 psia, ATat = 10 F, and steam
quality equal to 0.1.

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