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Automotive Engineering

Senaka B

one year ago

What is Radiator? It’s Working Principle and Types of Radiator

What is Radiator? It’s Working Principle and Types of Radiator



Radiator and Types of Radiator



Today we’ll discuss the cooling system of your vehicle and how it works, the cooling system in your vehicle consists of the Water pump, Radiator, Cooling fans as well as Thermostat. In this article, we’ll discuss Radiators, Radiator types and Radiator working.



What is The Radiator?



The radiators are heat exchangers used to transfer thermal energy from one medium to another for the purpose of cooling and heating.



A radiator is a device consisting of a large amount of cooling surface which contains large amounts of air so that it spreads through the water to cool efficiently.



The radiator has a wide range of application in automobile industries there are mainly used to cool the internal combustion engine in the automobile. They also used in piston-engined aircraft, Railway, locomotives, motorcycles, stationary generating plants and other places where such engines are used.



Radiators are classified according to the direction of the water flow through them. In some, the water flows from top to bottom-down flow type radiator. In other, the water flows horizontally from an input tank on one side to another tank on the other side-cross flow type radiator.



Radiators are usually made of copper and brass because of their high heat conductivity. The various sections of the radiators are almost completely joined by soldering.



Types of Radiator



There are two basic types of radiator





  1. Tubular type


  2. Cellular type




Tubular Type Core



In tubular type core, the upper and lower tanks are connected by a series of tubes through which water passes. Fins are placed around the tubes to improve heat transfer. Air passes around the outside of the tubes, between the fins, absorbing heat from the water in passing.



In a tubular radiator, because the water passes through all the tubes, if one tube becomes clogged, the cooling effect of the entire tube is lost. In a cellular. radiator, the clogging of any passage results in a loss but of a small part of the total cooling surface.



Cellular Type Core



In cellular type core, air passes through the tubes and the water flows in the spaces between them.



The core is composed of a large number of individual air cells which are surrounded by water. Because of its appearance, the cellular type usually is known as a honeycomb radiator, especially when the cells in front are hexagonal in form.



In a cellular. radiator, the clogging of any passage results in a loss but of a small part of the total cooling surface.



Construction of Radiator



It consists of an upper tank and a lower tank and between them a core.





  • The upper tank is connected to the water outlet or outlets from the engine jacket by a hose pipe, and


  • The lower tank is connected to the jacket inlet through the water pump.


  • The core is a radiating element, which cools the water.




Radiator Working Principle



Radiator working principle:



The radiator is a pretty simple device. Nowadays most modern cars use aluminium radiator. Radiators usually have a tank on each side, and inside the tank is a transmission cooler.



n this type of radiator, you’re going to have an aluminium mesh. In this aluminium device, It consists of two ports inlet an outlet. Inside the radiator, there are tubes that mounted in a parallel arrangement. And the aluminium fins are attached to all of the tubes.



The Radiator working is very simple. In radiator, the coolant flows from the inlet to the outlet through many tubes mounted in a parallel arrangement.



The hot water enters the radiator through the inlet port. And a fan is attached on behind the radiator to cool down the hot water in the tubes. The fan blows the air and cools down the water. So the water is going to come out cooler than it entered before and then go back to the engine.



Now how it does that air is going to be feeding through this.



The aluminium fins are attached to the tubes this called tubulator. Now the tubes are filled with hot coolant coming from the engine. So they’re going to give off heat to this aluminium coat by passing air through the fan, it cools the aluminium coat. If the fluid flowed very smoothly through the tubes, only the fluid actually touching the tubes would be cooled directly. Now it is going to send out to the cooler and then go back to the engine.