In the production of orange juice, it is desired to heat the juice from 4° C to 93° C in a tubular heat exchanger. To accomplish this task, saturated steam enters the outer tube of the heat exchanger at 150 kPa and exits as a saturated liquid at the same pressure. For an orange juice flow rate of 2000 kg/hr (c̅_p = 3.9 kJ/kg·K), determine the required steam flow rate.