The plates in a plate and frame heat exchanger are made of Inconel 600 (k = 16 W/m-K) and are 1.5 mm thick. Consider one of the plates in this heat exchanger. The convective heat transfer coefficients on hot and cold side of the plate are 2,250 W/m2-K and 1,600 W/m2-K, respectively. The average temperature difference between the hot and cold fluids is 10 K. Determine the following:

a. The average heat flux from the hot fluid to the cold fluid, including the conductive resistance of the plate

b. The average heat flux from the hot fluid to the cold fluid, assuming that the conductive resistance of the plate is negligible

c. The percent error in the heat flux by assuming the conductive resistance of the plate can be ignored