A 0.6-m·diameter, 1.9-m·long cylindrical tank con- taining liquefied natural gas (LNG) at - 160°C is placed at the center of a 1.9-m·long 1.4-m × 1,4-m Square solid bar made of an insulating material with k = 0.0002 W/m·K. If the outer surface temperature of the bar is 12°C, determine the rate of heat transfer to the tank. Also, determine the LNG temperature after one month. Take the density and the specific heat of LNG to be 425 kg/m3 and 3.475 kJ/kg·°C, respectively.
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