Question

A shell-and-tube heat exchanger with 2 shell passes and 8 tube passes is used to heat ethyl alcohol (cp = 2670 J/kgÂ·K) in the tubes from 25Â°C to 70Â°C at a rate of 2.1 kg/s. The heating is to be done by water (cp = 4190 J/kgÂ·K) that enters the shell side at 95Â°C and leaves at 45Â°C. If the overall heat transfer coefficient is 950 W/mÂ²Â·K, determine the heat transfer surface area of the heat exchanger.

Name: a shell and tube heat exchanger with 2 shell passes and 8 tube passes is used to heat ethyl alcohol cp 2670 jkgk in the tubes from 25c to 70c at a rate of 21 kgs the heating is to be done by 17997
Uploaded: 2022-04-16T10:47:16-08:00
Duration: 4 min 57 s
Channel: Amit Srivastava
Description: a shell and tube heat exchanger with 2 shell passes and 8 tube passes is used to heat ethyl alcohol cp 2670 jkgk in the tubes from 25c to 70c at a rate of 21 kgs the heating is to be done by 17997

          A shell-and-tube heat exchanger with 2 shell passes and 8 tube passes is used to heat ethyl alcohol (cp = 2670 J/kgÂ·K) in the tubes from 25Â°C to 70Â°C at a rate of 2.1 kg/s. The heating is to be done by water (cp = 4190 J/kgÂ·K) that enters the shell side at 95Â°C and leaves at 45Â°C. If the overall heat transfer coefficient is 950 W/mÂ²Â·K, determine the heat transfer surface area of the heat exchanger.

Added by Amy H.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Amit Srivastava

04/16/2022

Step 1

First, calculate the heat (Q) absorbed by the ethyl alcohol using the formula: \[ Q = m \cdot c_p \cdot \Delta T \] where: - \(m = 2.1 \, \text{kg/s}\) (mass flow rate of ethyl alcohol), - \(c_p = 2670 \, \text{J/kg·K}\) (specific heat capacity of ethyl Show more…

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A shell-and-tube heat exchanger with 2 shell passes and 8 tube passes is used to heat ethyl alcohol (cp = 2670 J/kgÂ·K) in the tubes from 25Â°C to 70Â°C at a rate of 2.1 kg/s. The heating is to be done by water (cp = 4190 J/kgÂ·K) that enters the shell side at 95Â°C and leaves at 45Â°C. If the overall heat transfer coefficient is 950 W/mÂ²Â·K, determine the heat transfer surface area of the heat exchanger.