The heat transfer area is

Question

In a condenser, water enters at 30⁰C and flows at the rate 1500Kg/hr. The condensing steam is at a temperature of 120⁰C and cooling water leaves the condenser at 80⁰C and cooling water leaves the condenser at 80⁰C. Specific heat of water is 4.187KJ/KgK. If the overall heat transfer coefficient is 2000W/m²K, the heat transfer area is                                                                                                                                                         

      (a) 0.707m²                                                         (b) 7.07m²

      (c) 70.7 m²                                                                 (d) 141.4 m²