Heat Transfer in a bar of steel

The energy from the hot water makes the molecules of the metal rod move faster, which we can feel as the rod heating up. The heat spreads up the rod as the faster molecules at the end of the rod bump into adjacent molecules and give them energy too - so the middle of the rod (even though it was not touching the water) got warmer as well. The heat balance equation is given by, qi = qo+q1 -Eq (2) Where, qi = Input heat rate from the heater to the copper rod (Watts). Qo = Output heat flow rate from the rod. = Heat flow rate absorbed by water in the cooling water jacket (Watts). Q1= Heat loss from the rod to the surrounding s through thermal insulation, watts (Watts), Assumed to be zero. Manufacturer of Heat Transfer Lab - Metal Rod Thermal Conductivity, A Pin Fin Heat Transfer, Natural Convection Heat Transfer and Liquids Thermal Conductivity offered by Krishana Enterprises, Ambala, Haryana. Krishana Enterprises. Village Keshopur, Ambala, Haryana.

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Heat Transfer in a bar of steel

Hello MEs.
I'm a long time member who usually stays in my own backyard - over in the structures area. But I have a situation where a relatively quick calculation (I hope) is appreciated from those of you with course work in heat transfer.
Rods

I have a 10' mild steel rod that at one free end is heated by a typical oxy-acetylene torch for say a period of 5 minutes. Let's say that the temperature for the 5 minute period is about 700 degrees F. Say the bar has an area of 1 square inch. How far along the bar's length will the heat travel?
Many thanks.

Regards,
Qshake
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1.Thermal Conductivity of Metal Rod Apparatus

This apparatus is used to calculate the thermal conductivity of metal rod (Copper).
Experimental setup consisting of:

Test rod of copper of 12mm dia. and 200mm long.

Ring type Heater

Cooling chamber of dia125mm and 50mm long with arrangement for water circulation

Shell filled with asbestos insulating powder

Set of thermocouples - 6 Nos.
Control panel consisting of:

6 Channels Digital Temp. Indicator range: 0-300oC

Dimmerstat : 0-2A / 230V

Mains ON/OFF switch

Digital Voltmeter 0-250V

Digital Ammeter 0-2 A.

2.Thermal Conductivity of Insulation Powder Apparatus

This apparatus is used to calculate the thermal conductivity of Insulating Powder (Asbestos Powder).
Experimental setup consisting of:

Mica insulated nichrome Ring type heater

Inner copper sphere of radius 100mm

Outer copper sphere of radius 200mm

Set of thermocouple - 4 Nos.

Heat transfer through a metal rod experiment

Heat Transfer In Metal Rod

Asbestos Powder is filled in between the outer sphere and inner sphere.
Control panel consisting of:

4 Channels Digital Temp. Indicator range: 0-300oC

Dimmerstat : 0-2A /230V

Mains ON/OFF switch

Digital Voltmeter 0-250V

Digital Ammeter 0-2 A.

3. Thermal Conductivity of Liquid Apparatus

This experiment is used to calculate the thermal conductivity of liquid (commercial glycerol).
Experimental setup consisting of:

Commercial glycerol filled between the metal plates of dia170mm.

Disk type heater

Cooling chamber with water circulation.

Central heat ring.

Thermocouple - 4 Nos.
Control panel consisting of:

4 Channels Digital Temp. Indicator range: 0-300oC

Dimmerstat : 0-2A / 230V

Mains ON/OFF switch

Digital Voltmeter 0-250V

Digital Ammeter 0-2 A.

4. Pin Fin In Natural/Forced Convection Apparatus

Heat Transfer Through A Metal Rod Experiment

This apparatus is used to calculate the heat transfer coefficient of vertical pin in natural convection / forced convection.
Experimental set up consisting of:

Vertical pin of dia 12and 125mm long fitted on a heater.

Blower unit with orifice of 14mm and manometer arrangement for flow measurement.

Duct of size : 100 X 150 x 500 mm

Pin-Fin : Brass

Ring type Heater

Set of Thermocouples: Cr/Al - 6 Nos.
Control Panel consisting of:

6 Channels Digital Temp. Indicator range: 0-300oC

Dimmerstat : 0-2A / 230V

Mains ON/OFF switch

Air Blower

Digital Voltmeter 0-250V

Digital Ammeter 0-2 A.

5. Natural Convection From Vertical Cylinder Apparatus

This apparatus is used to find out the heat transfer coefficient of vertical cylinder in natural convection.
Experimental Setup consisting of:

Brass tube vertical cylinder of dia 32mm and 500mm long.

Duct of size : 150 X 150 x 500 mm

Set of Thermocouple - 6 Nos.

Ring type Heater.
Control Panel consisting of:

6 Channels Digital Temp. Indicator range: 0-300oC

Dimmerstat : 0-2A /230V

Mains ON/OFF switch

Digital Voltmeter 0-250V

Digital Ammeter 0-2 A.

6. Forced Convection From Horizontal Cylinder Apparatus

This apparatus is used to find out the surface heat transfer coefficient for a horizontal pipe flowing heat by forced convection to air flowing through it for different air flow rates and heat flow rate.
Experimental Setup consisting of:

Horizontal pipe of internal dia25mm and length 300mm

Blower with orifice plate of dia. 15mm and manometer for flow measurement.

Long type heater on test section.

Set of Thermocouple - 6 Nos.
Control Panel consisting of:

6 Channels Digital Temp. Indicator range: 0-300oC

Dimmerstat : 0-2A / 230V

Mains ON/OFF switch

Air Blower

Digital Voltmeter 0-100/250V

Digital Ammeter 0-2 A.

7. Emissivity Measurement Apparatus

The apparatus is used to measure the emissivity of a metal.
Experimental Setup consisting of:

Test plate: Polished aluminum of dia 125mm

Reference plate : black aluminum of dia 125mm

Wooden chamber with Perspex cover.

Mica-insulated heaters for black and polished body.

Set of Thermocouple - 3 Nos.
Control Panel consisting of:

3 Channels Digital Temp. Indicator range: 0-300oC

Dimmerstat - 2 Nos. of 0-2A/230V

Mains ON/OFF switch

Digital Voltmeter 0-250V

Digital Ammeter 0-2 A.

8. Parallel Flow/Counter Flow Heat Exchanger Apparatus

The apparatus is used to calculate heat transfer rate and LMTD in parallel and counter flow.
Experimental Setup consisting of:

Outer tube of inter I.D. 25mm and length 1.2metre.

Inner tube of I.D. 10 mm and length 1.5metr.

Thermocouples - 5 Nos.

Arrangement for making parallel and counter flow.
Heating arrangement:

Heat Transfer In Metal Rodent

Cold water storage tank.

Hot water stroge tank temp constant through thermostat.

Electric industrial heater of 2 KW.
Control panel consisting of:

5 Channels Digital Temp. Indicator range: 0-200oC

Digital Voltmeter 0-250V

Digital Ammeter 0-2A

9. Stefan Boltzmann Apparatus

This apparatus is used to calculat