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Nahme-Griffith number, Nakashima, CY Nanoparticles, for heat transfer augmentation, Naphthalene: Napthenes: National practice, in mechanical design, guide to, Natural convection: Natural draft cooling towers: Natural frequency of tube vibration in heat exchangers, Navier-Stokes equation, Neon: Neopentane: Net free area, in double-pipe heat exchangers, Netherlands, guide to national mechanical design practice, Networks, of heat exchangers, pinch analysis method for design of, Neumann boundary conditions, finite difference method, Nickel, thermal and mechanical properties Nickel alloys, Nickel steels, Niessen, R, Nitric oxide: Nitriles: Nitrobenzene: Nitro derivatives: Nitroethane: Nitrogen: Nitrogen dioxide: Nitrogen peroxide: Nitromethane: m-Nitrotoluene: Nitrous oxide Noise: Nonadecane: Nonadecene: Nonane: Nonene: Nonanol: Nonaqueous fluids, critical heat flux in, Non-circular microchannels: Noncondensables: Nondestructive testing, of heat exchangers Nongray media, interaction phenomena with, Nonmetallic materials: Non-Newtonian flow: Nonparticipating media, radiation interaction in, Nonuniform heat flux, critical heat flux with, Non-wetting surfaces, in condensation augmentation, North, C, No-tubes-in-window shells, calculation of heat transfer and pressure drop in, Nozzles:
design to ASME VIII, design to EN13445, design to PD5500 impinging jets from, heat transfer in, loads in,
Nozzle Loads cylindrical shells, spherical shells, stress limits in,
loss coefficients in, in shell-and-tube heat exchangers: constructional features
Nowell, D G, Nucleate boiling: Nuclear industry, fouling problems in, Nucleation: Nucleation sites: Nuclei, formation in supersaturated vapor, Number of transfer units (NTU): Numerical methods: Nusselt: Nusselt-Graetz problem, in laminar heat transfer in ducts, Nusselt number:

Index

HEDH
A B C D E F G H I J K L M N
Nahme-Griffith number, Nakashima, CY Nanoparticles, for heat transfer augmentation, Naphthalene: Napthenes: National practice, in mechanical design, guide to, Natural convection: Natural draft cooling towers: Natural frequency of tube vibration in heat exchangers, Navier-Stokes equation, Neon: Neopentane: Net free area, in double-pipe heat exchangers, Netherlands, guide to national mechanical design practice, Networks, of heat exchangers, pinch analysis method for design of, Neumann boundary conditions, finite difference method, Nickel, thermal and mechanical properties Nickel alloys, Nickel steels, Niessen, R, Nitric oxide: Nitriles: Nitrobenzene: Nitro derivatives: Nitroethane: Nitrogen: Nitrogen dioxide: Nitrogen peroxide: Nitromethane: m-Nitrotoluene: Nitrous oxide Noise: Nonadecane: Nonadecene: Nonane: Nonene: Nonanol: Nonaqueous fluids, critical heat flux in, Non-circular microchannels: Noncondensables: Nondestructive testing, of heat exchangers Nongray media, interaction phenomena with, Nonmetallic materials: Non-Newtonian flow: Nonparticipating media, radiation interaction in, Nonuniform heat flux, critical heat flux with, Non-wetting surfaces, in condensation augmentation, North, C, No-tubes-in-window shells, calculation of heat transfer and pressure drop in, Nozzles:
design to ASME VIII, design to EN13445, design to PD5500 impinging jets from, heat transfer in, loads in,
Nozzle Loads cylindrical shells, spherical shells, stress limits in,
loss coefficients in, in shell-and-tube heat exchangers: constructional features
Nowell, D G, Nucleate boiling: Nuclear industry, fouling problems in, Nucleation: Nucleation sites: Nuclei, formation in supersaturated vapor, Number of transfer units (NTU): Numerical methods: Nusselt: Nusselt-Graetz problem, in laminar heat transfer in ducts, Nusselt number:
O P Q R S T U V W X Y Z
N Nozzles: loads in,
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Nozzle Loads

DOI 10.1615/hedhme.a.000424

4.3 SHELL-AND-TUBE DESIGN CODES
4.3.7. Nozzle Loads

R. Blenkin

A. Introduction

Section 410, Section 419J, and Section 423I deal with various methods of nozzle reinforcement for pressure conditions. Section 419J also makes reference to British Standard 5500 (British Standards Institution, 1991) as the only code giving design rules for external loads on nozzles, and Section 404C briefly discusses the analytical basis. (However, many designers have also used the guidance given in Welding Research Council Bulletin 107 (K.R. Wichman et al., 1965) to establish stresses arising from nozzle loads).

Local loads on nozzles can arise from dead weight, pressure and thermal effects, and the geometry of the attached piping system. Loads may be normal or tangential to the shell, and bending and/or twisting moments may also be present.

In the following the scope of the approach in BS 5500 is reviewed, followed by a design example covering calculations for one of the nozzles of the heat exchanger described in Section 423 subject to arbitrary forces and moments. Symbols, nomenclature, etc. are in accordance with BS 5500 and are not defined in the text. Reference should be made to BS 5500, which must be available when studying this section.

B. Cylindrical shells

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