Automotive heat exchangers are mechanical gadgets explicitly intended to move heat between at least two substances i.e., gases, fluids, or even fumes of various temperatures. Contingent upon the sort of warmth exchanger utilized, the warmth traveling cycle might be either by means of an actual obstruction, like a layer of metal, or through an actual penetrable film, for example, in a warmth exchanger found in a vehicle's motor. Warmth exchangers assume a significant part in the activity of vehicles due to their capacity to successfully move heat starting with one liquid then onto the next. The motor compartment is one zone in a vehicle where heat exchangers find critical use.
There are three essential kinds of automotive heat exchangers. These are strong metal, fluid metal, and gas metal. Their essential capacity is to manage and blend liquids in different sizes and temperatures for legitimate warming. Understanding the warmth move system of these sorts of warmth exchanger will assist you with figuring out which one is most appropriate for your application.
Solid Metal Automotive Heat Exchangers:
The most common form of heat exchanger found in automobiles are the solid metal varieties. They are made up of one or more layers of aluminum or steel. They can come in different designs and are usually constructed using first law principles. For instance, if the top layer is composed of a thinner aluminum layer, the bottom will be cooler due to the direct contact between the two layers.
Liquid Metal Automotive Heat Exchangers:
These heat exchangers utilize a specially designed mixing chamber that has a lower concentration of heat than the mixing chamber that makes up the solid portion. This results in a design where the top most layers are cool while the bottom most layers are heated. To achieve this, they use a second law principle called the zeroth law. The zeroth law states that a material will continue to conduct heat in the same manner regardless of its temperature. As a result, they can be used in applications where high temperature operation is necessary such as an engine repair or oil change.
Gas Metal Automotive Heat Exchangers:
These heat exchangers employ a special design that causes the fluid to mix with the metal surface to bring about an increase in their temperature. While this creates a cooler surface, it also causes mixing between the fluid and the metal, thus creating cross flow heat exchangers. They are commonly used for fluid mixing in industrial and scientific equipment.
Automotive heat exchangers are generally classified into two main types depending on flow configurations: physical flow configurations and thermal flow configurations. A physical flow configuration heats one fluid directly. This type of heat exchanger may be made up of a single piece or could comprise several separate pieces. For example, a heat exchanger composed of a straight shaft and straight fitting sleeves is called a straight shaft heat exchanger. A thermal flow configuration heats one fluid indirectly by means of convection. In a typical thermal type heat exchanger, there is a physical barrier formed by a thin film of metal foil. The temperature difference between the top of this metal foil and the surrounding ambient air is the heat transfer coefficient. As the temperature difference rises, so does the heat transfer coefficient, until eventually the temperature of the entire system reaches equilibrium.
Read More @ https://www.linkedin.com/pulse/due-ability-effectively-transfer-heat-from-one-fluid-exchanger-k/
