Page 1 Heat Transfer Project Zirconium Billet Temperature by Brent Staley and Brad Smith.
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Transcript of Page 1 Heat Transfer Project Zirconium Billet Temperature by Brent Staley and Brad Smith.
Page 2
Background
• Zirconium rods are used to house the fuel pellets in nuclear reactors
• Prior to extrusion, the billets must be lubricated to prevent sticking on the die
• The billets must be heated to a specific temperature for the lubricant to cure properly
Page 3
Objective
• Heat a Zirconium billet to a desired temperature in a barrel of water and measure the time
• Calculate time needed to achieve desired temperature and compare with measured time
Page 5
Calculations
• Assumptions:– Infinite cylindrical shape assumed– Temp. of the barrel wall equals temp. of the
water– Thermal properties are constant throughout
the billet – Spatial effects were considered– Temp. of the water is constant throughout the
barrel
Page 8
Experimental Setup
Popcorn can - hold the water
Pyrometer – measure the surface temperature of billet
Thermometer – measure temperature of the water
Overhead bridge with block of wood – lower the billet into water
Heat plate – heat water to desired temp.
Stop watch – for obvious reasons
Page 9
Experimental results
• Temp. water – 180 F
• Starting temp. of billet – 78 F
• Final temp. of billet – 166 F
• Calculated time from 78 F to 166 F – 228 sec
• Measured time – 180 sec
• Difference of 48 sec