A liquid stream contains 1 lbm/s of the compound at T = 100 °F and P = 1 atm. It needs to be boiled and heated to P = 1 atm and 175 °F, as that is the temperature at which it must enter a chemical reactor. This heating boiling process is to be carried out in a shell and tube heat exchanger with steam at P = 1 bar and T = 300 °C to be used as the source of heat. Find the flowrate of entering stream if the steam exits the heat exchanger as saturated vapor at P = 1 bar. Assume the liquid stream to be water.

Stefan-Boltzman law which describes the radiation heat transfer states that, it is proportional to (where, t = temperature in °C T = absolute temperature in °K) A. +4 T4 B. C. D. O 1 t4 1 T4

A refrigerator is to operate to maintain a refrigerator temperature of 4°C in a 20°C kitchen. You need to design both the evaporator and the condenser for a 5°C minimum temperature difference for heat transfer. At what temperature should the working fluid refrigerant flowing through the evaporator be designed? 9°C O 4°C O 20°C O 15°C O -1°C 25°C

9. SOC high crude oil is to be heated from 15° C to 55° C at the rate of 1,50 ton/h using a stream from the plant. The crude oil is pumped in to the tube and the heating stream is pumped into the shell side of an available heat exchanger. The heating stream enters in to the tube at 150° C and leaves the tube at 110° C. The average properties of both the fluids are given below. The available heat exchanger (1-2 pass) has shell diameter of 23% in. The shell has 324 tubes, ¾ in. OD, BWG 14 (wall thickness), 12 feet long arranged on 1 in. Square pitch and supported by baffles with a 25% cut, spaced at 9 in interval. You need to find the suitability of this exchanger for the purpose. What will be the allowable fouling factor? Heating stream Crude oil cp, J/g. ° C 2.2 2 H, CP 5.2 2.9 P, kg/m3 k, W/m. C 866 822 0.12 0.138