How do you find the area of a shell and tube heat exchanger?

How do you find the area of a shell and tube heat exchanger?

4.0 – HEAT EXCHANGERS CALCULATIONS:

1. The main basic Heat Exchanger equation is: Q = U x A x ΔTm =
2. The log mean temperature difference ΔTm is: ΔTm =
3. (T1 – t2) – (T2 – t1) = °F.
4. T1 = Inlet tube side fluid temperature; t2 = Outlet shell side fluid temperature;
5. ln (T1 – t2) (T2 – t1)

How do you determine shell side and tube side fluid?

Fluid with higher flow rate is generally preferred to be kept on the shell side. Service where a large temperature change is desired is also kept on the shell side, where temperature change can be achiever by increasing the length of the exchanger.

Which one of the following fluid Cannot be placed in the tube side?

9. Which one of the following fluid cannot be placed in the tube side? v. High pressure stream.

What should be the tube layout pattern if the fouling fluid is on tube side?

A fluid with a tendency to foul generally should go on the tube side. Cleaning straight tubes normally is easier than cleaning the shell — even if a relatively large tube pitch or a square tube pattern is used to make the shell side easier to clean.

Which is the best tube arrangement?

Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling?

• A. Square pitch.
• Triangular pitch.
• Diagonal square pitch.
• None of these.

Which one is having the lowest value of fouling factor?

Which one is having the lowest value of fouling factor? Explanation: Fouling factor for non-oil bearing system is 0.0001 while that of fuel gases, oil bearing system and engine exhaust are 0.0010, 0.0002 and 0.002 respectively.

How do you increase fin effectiveness?

Factors affecting fin effectiveness

1. P.Kh.Ac should be greater than unity if the rate of heat transfer from the primary surface is to be improved.
2. If the ratio of P and Ac is increased , the effectiveness of fin is improved.
3. Use of fin will be more effective with materials of large thermal conductivities.

Which of the following configuration has the highest fin effectiveness?

Which one of the following configurations has the highest fin effectiveness ? Fin effectiveness is defined as the ratio of the fin heat transfer rate to the heat transfer rate that would exist without the fin. And it is highest with Thin and closely spaced fins.

What is the unit of overall heat transfer coefficient?

Btu

What is the purpose of using fin in a particular heat transfer system?

Explanation: Fins are provided to a heat exchanger surface to augment the heat transfer by increasing the surface area exposed to the surroundings.