Consider a concentric tube heat exchanger with an area of 60 m2 operating under the following conditions: Hot fluid Cold fluid Heat capacity rate, kW/K 6 4 Inlet temperature, °C 70 40Outlet temperature, oC 54 -(a) Determine the outlet temperature of the cold fluid. (b) Is the heat exchanger operating in counterflow or parallel flow, or can't you tell from the available information? (c) Calculate the overall heat transfer coefficient. (d) Calculate the effectiveness of this exchanger. (e) What would be the effectiveness of this exchanger if its length were made very large?