In principle heat, exchangers have the purpose to transfer heat from a flowing substance to another flowing substance of a lower original temperature. In refrigeration engineering, heat exchangers are equally used as evaporators and as condensers. In both applications, the refrigerant undergoes a phase transition. Refrigeration system consists of several types of equipment like compressor, condenser, evaporator, expansion devices etc. ... Its function is to remove the heat of the hot vapour refrigerant discharged from the compressor. The evaporator is used in the low-pressure side of a refrigeration system.
Tt's an equipment that helps distribute heat between two fluids. This way, while one gains heat, the other one loses it and any of them may be used in your production processes. For example, removing heat from a coolant using cold water
Types of Heat Exchangers
A heat exchanger is a device that facilitates the process of heat exchange between two fluids that are at different temperatures.
The most common in household refrigerators is the tube-in-tube heat exchanger with a capillary tube placed concentrically inside the suction tube.
A heat exchanger works on the simple principle of second law of thermodynamics; the heat flow from a body to another in respect of their temperature difference. The heat under natural state will move from a hot body to a cooler one.
The major difference between a heat exchanger and a chiller is in the design. While chiller systems possess refrigeration units that cool their circulating chiller fluid, a heat exchanger lacks a refrigeration unit and achieves temperature regulation by direct fluid heat transfer.
Different Types Of Heat Exchanger
While metals have a high resistance and are commonly used in constructing heat exchangers due to their high thermal conductivity, as in the case of copper, titanium, and stainless-steel heat exchangers, other materials, such as graphite, ceramics, composites, or plastics, may offer greater advantages depending on the
Heat exchangers work by transferring heat from one place to another. The combustion produced from the burning natural gas or propane fuel in the furnace enters and travels through the heat exchanger. As the gas makes its way to the exhaust outlet of the furnace, the hot flue gas heats the metal. The hot metal heats the air circulating over the exterior of the heat exchanger. Note that it is only one way of heat exchanging that happens in different types of heat exchangers but it is the whole point in almost all types of heat transfer machines.