In a textile manufacturing plant, the waste dyeing water (c p 4295 J kg middot K) at 75 deg C is to be used to preheat fresh water (c p 4180 J kg middot K) at 15 deg C at the same flow rate in a double pipe counter flow heat exchanger The heat transfer surface area of the heat exchanger is 1 65 m 2...

The waste dyeing water is to be used to preheat fresh water The outlet temperatures of each fluid an ...

In a textile manufacturing plant, the waste dyeing water (c p = 4295 J/kg·K) at 75°C is

Question:

In a textile manufacturing plant, the waste dyeing water (c_p= 4295 J/kg·K) at 75°C is to be used to preheat fresh water (c_p= 4180 J/kg·K) at 15°C at the same flow rate in a double-pipe counter-flow heat exchanger. The heat transfer surface area of the heat exchanger is 1.65 m²and the overall heat transfer coefficient is 625 W/m²·K. If the rate of heat transfer in the heat exchanger is 35 kW, determine the outlet temperature and the mass flow rate of each fluid stream.

Fresh water 15°C Dyelng water 75°C h,out Tcout