Question

Problem #1

Saturated steam at 300°C is used to heat a counter-currently
flowing stream of methanol vapor from 65°C to 260°C in an adiabatic
heat exchanger. The flow rate of the methanol is 5500 standard
liters per minute (at STP), and the steam condenses and leaves the
heat exchanger as liquid water at 90°C.

a) Draw a diagram of the process.

b) Calculate the required flow rate of the entering steam in m3/min.

c) Calculate the rate of heat transfer from the water to the methanol (kW).

Answer #1

saturated steam at 300 C is used to heat countercurrently
flowing stream of methanol vapor from 65C to 260 C in and adiabatic
heat exchanger. The flow rate of the methanol is 5500 standard
liters per minute, and the steam condenses and leaves the heat
exchanger as liquid water at 90 C.
A) calculate the required flow rate of the entering steam in
m^3/min.
B) Calculate the rate of heat transfer from the water to the
methanol (kW).

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