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total heat transfer

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001686
EISBN: 978-1-62708-220-4
... and diphenyl oxide and has superior heat transfer characteristics. The vaporizer coil material was specified as ASME SA-106 Grade B Schedule 80 pipe. The vaporizer coil was wound in a right-hand helix with a coil centerline diameter of approximately two meters. There were 24 3 4 total loops...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001616
EISBN: 978-1-62708-229-7
... sites for local pitting bursting. Nonuniform heat transfer in Stage 3 operation accelerated the selective corrosion of front-end tubes. The relatively high heat transfer in this stage resulted in condensation of some corrosive gases and consequent corrosion. Continuous operation of the plant with some...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001638
EISBN: 978-1-62708-228-0
... ) and dilution steam are added to the feed in order to reduce coke formation on the internal surfaces of the furnace tubes and thus increase the run length of the furnace between decoking operations. Coke formation is detrimental to the operation of the furnace since it hampers the heat transfer from the furnace...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
... by the shear and adhesive properties of the transferred film. Reprinted with permission from Ref 1 A distinction within the interfacial wear process may be made based on whether or not the frictional heat dissipation is isothermal or quasi-adiabatic. Isothermal heat dissipation can change...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001392
EISBN: 978-1-62708-231-0
... of construction, it was considered that the cracking in this particular case was due principally to the inordinately large gap between the components. This would lead to a reduction in the rate of heat transfer from the furnace ring to the water and that portion of the furnace ring immediately adjacent to the air...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
..., and pressure vessels that constitute the steam-generating portion of the system. With very few exceptions, failure of pressurized components is confined to the relatively small-diameter tubing making up the heat-transfer surfaces within the boiler enclosure. Overheating is the main cause of failure...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001108
EISBN: 978-1-62708-214-3
... that hot bending be used for fabrication of the curved parts. A change of alloy to a low-alloy chromium-molybdenum allay to protect against heat was also suggested. Chemical processing equipment Chemical reactors Creep (materials) Pipe bends Tubing Incoloy 800H UNS N08810 Intergranular...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... of thermal stress . Heat Transfer Symposium , University of Michigan Engineering Research Institute , pp. 9 – 75 ( 1953 ) 9. White F.M. : Heat and Mass Transfer . Addison-Wesley ( 1988 ) 10. Touloukian Y.S. : Thermophysical Properties of Matter , vols. 12 and 13 . IFI Plenum...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
.... 23 Schematic of FZG back-to-back gear scuffing test setup. Source: Ref 135 Fig. 1 Steps leading to adhesive wear. (a) Microjoints. (b) Deformation of asperities and removal of surface films. (c) Shearing and material transfer. Source: Ref 15 Fig. 2 Example of adhesive wear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001545
EISBN: 978-1-62708-236-5
... and loadings); a photomicrograph showing intergranular attack; and a two-part conclusion attributing failure to stress corrosion and recommending that type 440C should not be used in the application. Stresses The deposits that normally develop on heat exchanger tube surfaces can affect heat transfer...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001632
EISBN: 978-1-62708-234-1
... as a means for determining surface temperature during operation. In practice, the thermocouples indicated a temperature much higher than that of the surface of the window due to heating of the thermocouples and the pads by the protons and because the heat transfer path to the coolant was poor. The surface...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001314
EISBN: 978-1-62708-215-0
... on the inside of the tube is expected to further hinder heat transfer. The net result is a temperature rise in the tube wall to a level that can exceed design limits. A plot of maximum allowable stress versus service temperature ( Fig. 15 ) suggests that the yield strength of the tubing decreases rapidly...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001268
EISBN: 978-1-62708-215-0
... with the governing specification (AMS 5996). This treatment consisted of initially heating the coupons to 720°C (1325°F) for 8 h and then cooling the furnace to 620°C (1150°F) until a total heat treatment time of 18 h was obtained. Coupons 6(b) and 7(b) conformed to the required hardness values as a result...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048850
EISBN: 978-1-62708-229-7
... downshocks might cause the damage pattern that was found. A transient heat transfer and thermal-stress analysis was performed with numerical methods and software identified as CREPLACYL and with material data taken from the Liquid Metal Fast Breeder Reactor Materials Handbook (U.S. Department of Energy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001446
EISBN: 978-1-62708-234-1
... of internal laminations constitutes an objectionable feature in the plates of vessels where heat transfer through the plates is required, particularly in the furnace rings of shell boilers. The laminations form an interruption to the heat path and instances are on record where overheating of the fireside...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001341
EISBN: 978-1-62708-215-0
... a reduction of creep ductility. Remedial Action After the third tube failure, the 100° bends were wrapped in insulation. Insulating a small part of the total exchanger did not measurably affect the overall heat transfer. The localized insulation reduced the tube temperature at the bend and may have...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... nonuniform and nonsymmetrical heat transfer during heating and cooling. Component design characteristics that are common to distortion and cracking problems include ( Ref 22 , 23 ): Parts that are long, with thin cross sections. Long and thin parts are defined as those greater than L = 5 d...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... to boiler design conditions or by upgrading the tube material (either with ferritic alloys containing more chromium or with austenitic stainless steels). Failure from overheating caused by internal flow restrictions or loss of heat-transfer capability can be eliminated by removal of internal scale, debris...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
...) Molten salt corrosion and liquid metal corrosion (which have become more of a concern as the demand for higher-temperature heat-transfer fluids increases) High-temperature (gaseous) corrosion Corrosive attack for these conditions is not necessarily restricted to just uniform thinning. Other...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003567
EISBN: 978-1-62708-180-1
... to the metal surface and corrosion rates. Corrosion products and the mass transfer of oxygen play an important role in the total material losses encountered in straight sections of a carbon steel pipeline. The material loss rate is under oxygen mass transfer control, with corrosion being the dominant mode...