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Comprehensive Glimpse About Heat Exchanger
Mar 08, 2017

Are you aware what heat exchangers are? Are there different types of heat exchangers? How are they designed? These are only some of the common question of people who really wanted to have such device yet they are not aware on how this device can help them.

Heat exchanger is an efficient device which is known for transferring heat from one medium up to the other.  However, these devices are not only used for heating applications like space heaters since they are also used for cooling applications like air conditioners and refrigerators.  Heat exchanger can be differentiated from each other depending on the liquids flow direction.

For such applications, heat exchangers can be paralleled, cross-flowed or even countercurrent. When it comes to paralleled flow exchangers, both the fluid are moving in similar directions, exciting and entering side by side. Cross flow heat exchanger, the path of the fluid runs perpendicularly to the other. In the countercurrent type of heat exchangers, fluid path is on the opposite direction with one enters and the other exits.

Types of Heat Exchangers According to Their Hydraulic Oil Cooler

There are different kinds of heat exchangers which are made available in the market and these are as follows:

1. Tube and Shell

Tube and Shell heat exchanger is primarily consists of large small tubes numbers which are cylindrical in shape. Its tubes are primarily positioned into a cylinder via tube bundle or tube stack or fixed tube plate. This allows tube bundles to contract and expand at different heat conditions. This also allows to simply and easily removed for maintenance and servicing.

2. Plate Type

Plate type of heat exchangers operates similar way as tube and shell heat exchangers do.  This highlights series of numerous stacked plates than tubes.  These are usually gasketed or brazed depending on the fluids used and its applications. They have compact and stainless steel type of construction making it ideal to be used for beverage or food processing or refrigerants.

3. Air Cooled

Air cooled type of heat exchangers are used in mobile or vehicle applications wherein there are no permanent water sources are available. Supplies and designs of this heat exchanger highlights cooling packs that combines engine jacket water coolers, charge air coolers and oil coolers to become one unit the reduces  space requirements at the same time improves efficiency.

How Are Heat Exchangers Hydraulic System  Designed?

Before you select heat exchangers, you need to determine first the fluid type of the primary circuit, its flow and temperature rate. You also need to know the things you need to take out of the primary circuit. Apart from the primary circuit, you also need to take a closer look at the secondary circuit the same as what you’ve done on the primary circuit.

Heat exchanger needs to have a design that lets two different types of liquids to have an interaction with each other. This is the reason why most of the heat exchangers today are designed having two adjacent type of containers intended for the two different liquids. The differences of the containers vary depending on the type of heat exchanger it is.

How to Make Your Heat Exchanger More Convenient and Efficient

The efficiency of heat exchanger can be defined in several ways. Apart from the thermal performances there are still other key factors you need to take into consideration and they are as follows:

· Cool Down Oil Temperature Differential

The difference in between the coolant and hot fluid is very essential. The coolant highlights cool down the oil temperature compared to the hot fluid. Lower coolant temperature takes more of cooler than the warm coolant temperatures.

· Flow Rate

As far as the flow rate is concerned, you need to take into consideration the fluid flow of both the secondary and primary part of your heat exchanger. Greater fluid flow in the heat exchanger can increase its capability to transfer the heat. This also means greater mass making it hard for energy to be eliminated. This also increases pressure loss and velocity.

· Installation

Heat exchanger needs to be installed depending on the manufacturer’s guidelines. Generally speaking, one of the most effective ways of installing heat exchangers is to have it at counter-current arrangement. For the tube and shell exchangers, it needs to be at their lowest inlet positions. These positions are very essential to assure that your heat exchangers will be at their best and most efficient functions and performances. For hydraulic oil cooler, it is always essential to consider the air flowing into the cooler when it is installed as well as any of its part that blocked its cooling capacity.

These are only some of the most important things you need to consider as far as heat exchangers are concerned. When you have hydraulic system at home, it’s best to let professional and skilled person to install heat exchangers in such type of device to make sure that it would be filled with efficiency when it comes to its performance and functions. With heat exchangers, expect that your life would be as simple, efficient and at ease all the time.

 


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