In many manufacturing plants, individuals are often working around high temperature surfaces. Exposed hot surfaces that are potential for thermal burns on human skin tissue are considered to be hazards in the workplace. Metallic surface of temperature above 70°C is considered extremely high temperature in the context of thermal burn, where skin tissue damage can occur instantaneously upon contact with the hot surface. Consider an AISI 1010 carbon steel strip (p =D 7832 kg/m3) of 2 mm thick and 3 cm wide that is conveyed into a chamber to be cooled at a constant speed of 1 m/s. The steel strip enters the cooling chamber at 597°C. Determine the amount of heat rate that needed to be removed so that the steel strip exits the chamber at 47°C to avoid instantaneous thermal burn upon accidental contact with skin tissue. Discuss how the conveyance speed can affect the heat rate needed to be removed from the steel strip in the cooling chamber. FIGURE P1-25 Cooling chamber Steel strip 1 m/s Tn= 597°C out

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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In many manufacturing plants, individuals are often working around high temperature surfaces.
Exposed hot surfaces that are potential for thermal burns on human skin tissue are considered to
be hazards in the workplace. Metallic surface of temperature above 70°C is considered
extremely high temperature in the context of thermal burn, where skin tissue damage can occur
instantaneously upon contact with the hot surface.. Consider an AISI 1010 carbon steel strip (p =
7832 kg/m3) of 2 mm thick and 3 cm wide that is conveyed into a chamber to be cooled at a
constant speed of 1 m/s. The steel strip enters the cooling chamber at 597 C. Determine the
amount of heat rate that needed to be removed so that the steel strip exits the chamber at 47°C
to avoid instantaneous themal burn upon accidental contact with skin tissue. Discuss how the
conveyance speed can affect the neat rate needed to be removed from the steel strip in the
cooling chamber.
FIGURE P1-25
Cooling chamber
Steel strip
Im/s
=47°C
Tn=597°C
Transcribed Image Text:In many manufacturing plants, individuals are often working around high temperature surfaces. Exposed hot surfaces that are potential for thermal burns on human skin tissue are considered to be hazards in the workplace. Metallic surface of temperature above 70°C is considered extremely high temperature in the context of thermal burn, where skin tissue damage can occur instantaneously upon contact with the hot surface.. Consider an AISI 1010 carbon steel strip (p = 7832 kg/m3) of 2 mm thick and 3 cm wide that is conveyed into a chamber to be cooled at a constant speed of 1 m/s. The steel strip enters the cooling chamber at 597 C. Determine the amount of heat rate that needed to be removed so that the steel strip exits the chamber at 47°C to avoid instantaneous themal burn upon accidental contact with skin tissue. Discuss how the conveyance speed can affect the neat rate needed to be removed from the steel strip in the cooling chamber. FIGURE P1-25 Cooling chamber Steel strip Im/s =47°C Tn=597°C
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