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radiant heat transfer

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Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005529
EISBN: 978-1-62708-197-9
... heating electrical heating heat flow simulation heat transfer properties heat treatment heating heat-source model heat-transfer model radiant-tube heating THE FIRST STEP IN EVERY HEAT TREATING PROCESS is heating the parts to the desired temperature. The heating process takes valuable time...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005930
EISBN: 978-1-62708-166-5
.... (Left) Silicon/silicon carbide composite after 360 h. (Right) Ni-Cr-Fe alloy after less than 1 h. Test conducted at High-Tech Ceramics, Alfred, NY Fig. 15 Heat transfer from radiant tubes Fig. 16 Internally finned tube for improved heat transfer. Courtesy of INEX Inc. Fig. 17...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005911
EISBN: 978-1-62708-167-2
... source to directly heat glass in a secondary vessel/chamber, after initially melting the glass batch by radiant heat transfer such as with combustion ( Ref 15 ). The second vessel acts as the finer or refiner to help outgas the molten glass, to eliminate bubble formation when cooling. This is somewhat...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005350
EISBN: 978-1-62708-187-0
... in the well) include: One major design criterion for radiant roof melting is based on the Stephan-Boltzmann law of radiant heat, which states that the rate of heat transfer increases the closer an object is to a heat source and the greater the temperature differential. By using low-velocity, flat-flame...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
.... , “Assessment of Heat Transfer Enhancement and Fouling in Industrial Heat Exchangers,” DOE/CE/40716-3, U.S. Department of Energy , Nov 1987 33. Lukasiewicz M.A. , Radiant Heating , Center for Advanced Materials Newsletter , Vol 4 ( No. 1 ), 1990 , p 73 – 78 34. Hindman D.L...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005835
EISBN: 978-1-62708-167-2
... field physical properties radiant heat transfer thermal conductivity Induction heating is a combination of several interrelated physical phenomena, which includes, but is not limited to, heat transfer, electromagnetics, and metallurgy. Physical properties of heated materials are complex...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005957
EISBN: 978-1-62708-166-5
...), application, heating method, mode of heat transfer, type of materials handling system, and mode of waste heat recovery (recuperation and regeneration). It provides information on uniform temperature distribution, the general requirements and selection criteria for insulation materials, as well as the basic...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005449
EISBN: 978-1-62708-196-2
... of heat transfer from one body to another by electromagnetic wave motion. The transmission of radiant energy does not require a carrying medium. The basic law of heat conduction, proposed by Fourier, states that the rate of heat flow in a material is proportional to the area perpendicular to heat flow...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005993
EISBN: 978-1-62708-166-5
...Order of magnitude of convective heat-transfer coefficients, <italic>h</italic> Table 15 Order of magnitude of convective heat-transfer coefficients, h Means of heat transfer Btu/h·ft 2 ·°F W/m 2 ·K Air, free convection 1–5 6–30 Superheated steam or air, forced convection 5...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001395
EISBN: 978-1-62708-173-3
...-Residue) Fluxes Bare Copper Assembly Process As the PWB assembly enters the oven tunnel (at ambient temperature) and energy is introduced to the assembly, the heat transfer process begins. The interconnection temperature is brought up to approximately 100 to 120 °C (212 to 250 °F) to reduce...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001399
EISBN: 978-1-62708-173-3
... areas or on a component body directly. Common nozzle materials are stainless steel or quartz glass. Gas flow rates primarily determine heat transfer efficiency (that is, the temperature and heating rate of the workpiece) and may affect the total area being heated. Insufficient gas flow will reduce...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005352
EISBN: 978-1-62708-187-0
.... This is particularly important in aluminum reverberatory furnaces (see the article “Reverberatory and Stack Furnaces” in this Volume). In reverberatory furnaces, forced convection keeps the entire melt at a more uniform temperature, so that the burners above the melt transfer more radiant heat to the surface...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003029
EISBN: 978-1-62708-200-6
... , 1986 , p 1797 – 1802 14. “Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source,” ASTM E 162-94, 1995 Annual Book of ASTM Standards , ASTM 15. Charrier J.-M. , Polymeric Materials and Processing , Hansen Publishers , 1990 16...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005501
EISBN: 978-1-62708-197-9
... industry applications are presented. casting casting defects ductile cast iron hot tearing macrosegregation microstructure porosity solidification thermophysical properties CASTING AND SOLIDIFICATION PROCESSES are modeled in terms of thermodynamics, heat transfer, fluid flow, stress...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003322
EISBN: 978-1-62708-176-4
... V. , J. Lubr. Technol. (Trans. ASME) , Vol 92 , 1970 , p 389 36. Chen W.C. , Samarasekera I.V. , and Hawbolt E.B. , Fundamental Phenomena Governing Heat Transfer During Rolling , Metall. Trans. A , Vol 24 , June 1993 , p 1307 – 1320 10.1007/BF02668199 37...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005230
EISBN: 978-1-62708-187-0
... heating, salt baths, and so on, each of which has its own advantages and limitations. The selection of heat treating equipment is based on factors such as cost, efficiency, environmental effect, maintenance cost of the equipment, geometry of parts, and so on. Relative heat-transfer coefficient ranges...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006535
EISBN: 978-1-62708-207-5
...; initial heat transfer by solid-solid conduction is not as energy- or time-efficient as with radiant heat transfer. Consequently, only when the bath becomes molten is there efficient heat transfer. The principal commercial application of immersion heating today (2018) is in holding and casting furnaces...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005923
EISBN: 978-1-62708-166-5
... violently that foaming occurs on the bath surface. This entrained air reduces the heat-transfer rate, and the foaming of oils could lead to fires. Quench Tank Type There are several different types of quench tanks, classified according to the application: open or continuous. A quench tank used...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003198
EISBN: 978-1-62708-199-3
...-wall furnaces. When vacuum furnaces are heated inductively, a graphite cylinder is used as a susceptor; the graphite is heated by induction and radiates the heat to the work inside the cylinder. When heating is provided by the more common resistance elements, the heat transfer is also completed...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005144
EISBN: 978-1-62708-186-3
... inside the deep drawing tool as a result of heat conduction ( Fig. 15 , bottom). Heating equipment includes ovens, platen heaters, ring burners, electric heating elements, heat-transfer liquids, induction heaters, and lamps and other types of infrared heating (see the section “Heating Methods...