(Solved): 34. From an experiment, an engineer measured the inlets and outlets temperatures of an oil-water he ...

34. From an experiment, an engineer measured the inlets and outlets temperatures of an oil-water heat exchanger. The measurement result is shown in Figure B4. Given that: (a) Calculate the heat transfer rate (in $$\mathrm{kW}$$ ) from hot side to cold (5 marks) side; (b) Calculate the mass flow rate of the cold water (in $$\mathrm{kg}/\mathrm{s}$$ ); (5 marks) (c) Calculate the log mean temperature difference (LMTD); and (5 marks) (d) Calculate the length of the oil pipes. (5 marks)