Determine a preliminary rating for a heat exchanger with the following service:

19,900 kg/h of kerosene leaves a distillation column at 200°C and will be cooled to 93°C by 67,880 kg/h of crude oil from storage that is to be heated from 38°C to 76°C. A maximum pressure drop of 70 kPa is permissible for both streams. A scale factor (R_f of 0.000053 m²K/W should be used for this service, which is mainly caused by the crude oil. Based on previous experience, 1-in diameter, 16 ft long, 12 BWG tubes should be used (these may be changed if needed), and the crude oil should flow inside the tubes.