Brief Introduction
A heat exchanger is a system used to transfer heat between a source and a working fluid. Heat exchangers are used in cooling and heating processes. [1] Fluids can be separated by solid walls to prevent mixing, or they can come into direct contact. [2] They are widely used in space heating, cooling, air conditioning, power stations, chemical plants, petrochemical plants, oil refineries, natural gas processing, and wastewater treatment. The classic example of a heat exchanger is found in internal combustion engines, where a circulating fluid called engine coolant flows through the radiator coil, air flows through the coil, which cools the coolant and heats the incoming air. Another example is a heat sink, which is a passive heat exchanger that transfers heat generated by an electronic or mechanical device to a fluid medium, usually air or liquid coolant.
Types
1. Double-pipe heat exchanger (a) When the other fluid flows into the annular gap between two tubes, one fluid flows through the smaller pipe. The flow may be a current flow or parallel flow in a double pipe heat exchanger. (b) Parallel flow, where at the same point, the hot and cold liquids join, flow in the same direction and exit at the same end.(c) Counter flow, where at opposite ends, hot and cold fluids join, flow in the opposite direction and exit at opposite ends.
2. Shell-and-tube heat exchanger
In a shell-and-tube heat exchanger, two fluids at different temperatures flow through the heat exchanger. One of the fluids flows through the tube side and the other fluid flows outside the tubes, but inside the shell (shell side).
3. Plate Heat Exchanger
A plate heat exchanger contains an amount of thin shaped heat transfer plates bundled together. The gasket arrangement of each pair of plates provides two separate channel system. Each pair of plates form a channel where the fluid can flow through. The pairs are attached by welding and bolting methods. The following shows the components in the heat exchanger.
4. Condensers and Boilers Heat exchangers using a two-phase heat transfer system are condensers, boilers and evaporators. Condensers are instruments that take and cool hot gas or vapor to the point of condensation and transform the gas into a liquid form. The point at which liquid transforms to gas is called vaporization and vice versa is called condensation. Surface condenser is the most common type of condenser where it includes a water supply device. Figure 5 below displays a two-pass surface condenser.
If you are interested in heat exchanger, please provide the drawing
and also provide these data parameters as follows:
| Outer Diameter |
| Inner Daimeter |
| Length |
| Number of Tube |
| Tube Daimeter |
| Operating Pressure |
| Test Pressure |
| Manufacture |
| Country of Original |
| Guarantee Period |
