The hydraulic oil cooler is also referred to as the heat exchangers. It is a device that utilizes gas or liquid to cool the fluid in a hydraulic system. Inside a hydraulic oil cooler, a gas or liquid, usually oil, is passed through a coil to cool down the hydraulic fluid before it enters the system. The hydraulic oil cooler is needed in a hydraulic system because cooling down the working temperature matters significantly. If the excess heat is generated and accumulated in the system, it can lead to wear on seals, surfaces and other parts within the system and eventually shorten the longevity of the system.
The application of hydraulic oil coolers is diverse; they are frequently implemented in the working environments where high pressure is involved, such as oil refineries and chemical processing plants. Besides the industrial applications, the hydraulic oil coolers in compact size are often applied in automobile applications where the oil coolers do not get access to the power source. The hydraulic oil coolers can have more possibilities to applications such as agriculture, manufacturing, and more based on the particular features and characteristics they have.
Regardless of the types or models a hydraulic oil cooler may be, the general components the machine has are similar. There is an oil reservoir in the cooler where the oil coolers are stored. There is a cooling fan, a radiator, and a hydraulic motor. These components are used to cool down the oil coolers and force the coolers through the hydraulic system. There are relief valves, filter valves and bypass valves that are responsible for controlling the flow and quality of the oil coolers. There are pipes for the coolers to pass through and gauges used to check the function of the machine.
The primary goal of the hydraulic oil cooler is to cool down a working machine in order to protect the components of the machine and to maintain the performance of it. The constant generation of heat is inevitable in almost every type of machine which needs a power source to work. If the heat is not dissipated properly, it accelerates the wear of components and shortens the lifespan of the parts. Besides, the excess heat results in fatigue of the machine and further compromises the performance. Therefore, the hydraulic oil cooler is required to avoid these circumstances.
A hydraulic system can work with several types of coolers. The air-cooled and water-cooled oil cooler are the most common types available. The air-cooled oil cooler systems dissipate heat with flowing air. The air-cooled hydraulic oil cooler works by means of forcing cold air over hot fluid within the cooler’s core. The advantages of this type include low running cost and simple maintenance. In addition, without the water contamination, the corrosion of the machine is reduced to a great extent.
However, the air-cooled machines usually come in larger sizes and they tend to make noticeable noise when operating. In addition, the ventilation may be a concern in the use of the air-based oil cooler. That is, the ambient room temperature of the very working environment affects the performance of the hydraulic oil cooler. If the ventilation is inefficient, the cooler is more likely to give a low performance.
The other common type of hydraulic oil cooler is the water-cooled system. This type of cooler uses cold water instead of air to cool down the working temperature. The water-based oil coolers have relatively lower upfront costs than the air-based systems; they are quieter when working, they have smaller sizes, and their performance will not be influenced by the ambient room temperature. Ventilation is not a concern for this type of machine. Therefore, a water-based hydraulic oil cooler has a greater consistency in general.
The downfall of the water-based hydraulic oil coolers, however, is that they need clean water to work. To be specific, a water-based cooling system requires continuously running water and it is quite an operating cost. In addition, the corrosion and erosion of the system are the other concerns when applying such machines. They need more maintenance than the air-based systems.
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