1. Compare and contrast the heat capacity pcp of common brick, plain carbon steel, engine oil, water, and soil. Which material provides the greatest amount of thermal energy storage per unit volume? Which material would you expect to have the lowest cost per unit heat capacity? Evaluate properties at 300 K.
2. A cylindrical rod of stainless steel is insulated on its exte- rior surface except for the ends. The steady-state tempera- ture distribution is T(x) = a - bx/L, where a = 305 K and b = 10 K. The diameter and length of the rod are D = 20 mm and L = 100 mm, respectively. Determine the heat flux along the rod, q"x . Hint: The mass of the rod is M = 0.248 kg.