Determine the area of a heat exchanger (shell) where water circulates in the primary circuit at 6 C and leaves at 12 C the flow of water in this circuit is 133 m/hr. In the secondary circuit, a flow of 200 m/hr is handled, which enters at a temperature of 21 C and leaves at 17 C For the secondary circuit, the tube to be used has an external diameter of 20 mm and an internal diameter of 16 mm, the material is copper and it is an operation at sea level.