# How is shell and tube heat exchanger area calculated?

## How is shell and tube heat exchanger area calculated?

The main basic Heat Exchanger equation is:

- Q = U x A x ΔTm = The log mean temperature difference ΔTm is:
- ΔTm = (T1 – t2) – (T2 – t1)
- = °F. Where:
- T1 = Inlet tube side fluid temperature; t2 = Outlet shell side fluid temperature;
- ln (T1 – t2) (T2 – t1)

### How do you determine shell side and tube side fluid?

Generally speaking, more viscous fluids should go on the shellside because these fluids typically have a low heat-transfer coefficient. Putting them on the shellside can maximize heat exchange efficiency.

**How many times do we have to calculate for pressure drop in a shell and tube heat exchanger?**

4. How many times do we have to calculate for Pressure drop in a Shell and Tube Heat Exchanger? Explanation: For a Shell and Tube HE, we have to calculate pressure drop twice, once for the tube to check whether the equipment can handle that pressure. Similarly, the second time for the shell side.

**What is a condenser shell and tube?**

Shell and Tube Condensers The main applications of the Shell & Tubes condensers are the condensation of refrigerant gas in the air conditioning and refrigeration plants, and heat recovery. All refrigerants are suitable, provided they are compatible with the materials used for construction.

## How do you calculate condenser capacity?

– The formula for the capacity of condenser is given by C=Ad When A is the area of each plate and d is the distance between the plates.

### How do you calculate the number of tubes in a condenser?

1) Guess/estimate heat transfer coefficients e.g 5000 W/(m2K) for both coolant and condensing steam, and calculate the overall heat transfer coeffcient, U=ca. 2500 W/(m2K) (ignore wall resistance. 3) Select a tube diameter and suitable tube length ==> number of tubes and Shell diameter can be determined.

**What are the factors considered when choosing the shell or tubes route for the fluids of heat exchanger?**

Here are the most important points to look for: Basic process requirements: For both fluids (shellside and tubeside), the vendor’s specification should match your specified flowrate, operating temperature and pressure, and properties such as density, viscosity, and thermal conductivity.

**What is pitch in shell and tube heat exchanger?**

Pitch is the shortest center-to-center distance between adjacent tubes. Commonly 1.25 to 1.5 time the tube diameter. Clearance is the distance between tubes. It should be larger than 25% of the tube diameter. Triangular or square arrangement of tubes are quite common.

## How do you calculate tube bundle diameter?

The “D” Bundle Diameter includes baffles and tube supports. An easy way to measure the diameter is to take the circumference of the shell, then divide by 3.14 to give you the diameter of the bundle.

### What is shell and tube evaporator?

These are often referred to as shell & tube evaporators or chillers. Mike Creamer. The primary purpose of shell and tube chillers is that of heat exchange, in vessel form, to cool a closed circuit, recirculating fluid flow, using refrigerant as the cooling medium.

**How do you calculate condenser efficiency?**

Performance of the condenser is analyzed based on logarithmic mean temperature difference (LMTD) method. Based on LMTD, the heat transfer equation can be expressed as in Eq. (1),(1) Q = k A ( d T m ) where k, heat transfer coefficient; A, tube surface area; Q, heat transfer rate.

**What is condenser capacity?**

The condenser capacity is the ability of the condenser to transfer heat from the hot vapour refrigerant to the condensing medium.