O Water at 496 lb/hr is to be heated from 95 to 200F by means of a concentric tube heat exchanger. Calculate the amount of heat required in Btu/hr. O Thermal fluid (oil) at 410F, with a specific heat of 0.5 Btu/lb - F is to be used as the hot fluid. Thermal fluid exit temperature = 194F. Calculate the thermal fluid rate. O Assume the overall heat transfer coefficient is 96.9 Btu/hr - ft- F and flow is countercurrent. Calculate the heat exchanger area. O Assumptions: (1) Negligible heat loss to surroundings, (2) Negligible kinetic and potential energy changes, (3) Constant properties