Coaxial Heat Exchanger Calculator

Formula

The formula to calculate the Heat Exchange Rate (Q) is:

\[ Q = U \cdot A \cdot \text{LMTD} \]

Where:

(Q) is the Heat Exchange Rate (kJ/hr)
(U) is the Overall Heat Transfer Coefficient (kJ/(hr·m²·°C))
(A) is the Total Heat Transfer Area (m²)
(\text{LMTD}) is the Log Mean Temperature Difference

What is a Coaxial Heat Exchanger?

A coaxial heat exchanger is a vital component used in various industries to transfer heat between two fluids efficiently. It consists of two concentric tubes, one placed inside the other, with the fluids flowing in opposite directions. The inner tube carries one fluid while the outer tube carries the other fluid. The separation between the tubes allows for the exchange of thermal energy without directly mixing the fluids.

Example Calculation

Let's assume the following values:

Overall Heat Transfer Coefficient (U) = 500
Total Heat Transfer Area (A) = 10
Log Mean Temperature Difference (LMTD) = 20

Using the formula to calculate the Heat Exchange Rate (Q):

\[ Q = U \cdot A \cdot \text{LMTD} = 500 \cdot 10 \cdot 20 = 100000 \]

The Heat Exchange Rate (Q) is 100,000 kJ/hr.