Length of specimen rod, L = 0.35m
Distance between adjacent thermocouples, Δx = 0.05m
Diameter of specimen rod, D = 0.01m
Assume, k = 121 (W)/(m·K) and h = 17 (W)/(m^2·K)
Perform the experiment first for heater voltage 9 volts and then repeat for 14 volts.
Calculate theoretical temperatures along the rod assuming a very long rod.
Plot a graph of temperature against position along the rod for both 9V and 14V experimental data.
Plot a graph of experimental and theoretical temperatures against position along the rod for 9V.
Plot a graph of experimental and theoretical temperatures against position along the rod for 14V.
Find Heat Transfer from the rod and Fin Effectiveness, and discuss all the results.
Table: Data Sheet for Extended Surface Heat Transfer Experiment
[
egin{array}{|c|c|c|}
hline
ext{Set-1} & ext{Set-2} \
hline
ext{Heater Voltage, V (volts)} & 9V & 14V \
ext{Length of specimen rod, L = 0.35m} & ext{Distance between adjacent thermocouples, x = 0.05m} \
ext{Diameter of specimen rod, D = 0.01m} & \
ext{Assume, k = 121 W/m·K and h = 17 W/m}^2 ext{·K} & \
ext{Perform the experiment first for heater voltage 9 volts and then repeat for 14 volts} & \
ext{Calculate theoretical temperatures along the rod assuming a very long rod} & \
ext{Plot a graph of temperature against position along the rod for both 9V and 14V experimental data} & \
ext{Plot a graph of experimental and theoretical temperatures against position along the rod for 9V} & \
ext{Plot a graph of experimental and theoretical temperatures against position along the rod for 14V} & \
ext{Find Heat Transfer from the rod and Fin Effectiveness, and discuss all the results} & \
hline
end{array}
]
Table: Data Sheet for Extended Surface Heat Transfer Experiment
[
egin{array}{|c|c|c|}
hline
ext{Set-1} & ext{Set-2} \
hline
ext{Heater Voltage, V (volts)} & 9V & 14V \
ext{Heater Current, I (amps)} & 0.32A & 0.49A \
ext{Heat flow (power to heater, Q = VI) (Watts)} & 2.88 & 6.86 \
ext{Temperature at heated end/Base (x = 0), T1 (°C)} & 46.5 & 77.7 \
ext{Temperature at x = 0.05m, T2 (°C)} & 38.8 & 60 \
ext{Temperature at x = 0.10m, T3 (°C)} & 33.5 & 47.8 \
ext{Temperature at x = 0.15m, T4 (°C)} & 29.7 & 39.4 \
ext{Temperature at x = 0.20m, T5 (°C)} & 27.5 & 34.5 \
ext{Temperature at x = 0.25m, T6 (°C)} & 26.2 & 31.5 \
ext{Temperature at x = 0.30m, T7 (°C)} & 25.3 & 29.5 \
ext{Temperature at x = 0.35m, T8 (°C)} & 24.9 & 28.7 \
ext{Temperature of ambient air, T9 (°C)} & 23.6 & 24.2 \
hline
end{array}
]