Air compressors make tough jobs more manageable by converting air into a usable source of power. The technology has evolved significantly to meet industry needs. Our guide to buying air compressors can help you understand everything about air compressors and their usage, helping you make a decision about the compressor you should purchase.
A] How Does An Air Compressor Function?
An air compressor functions by compressing air and storing it in a tank and providing compressed air at different volumes and pressure, which can then be used for a variety of applications. The compressor draws in air through an intake valve, compresses it using a piston, rotary screw, or other mechanism, and then forces the compressed air into the storage tank. The stored air is then released through a discharge valve as needed for various tasks.
B] Different Types Of Air Compressors And Their Applications In Different Industries
Air compressors are varied based on size, power supply, pressure, and use across industries. Which is why we recommend consulting an expert before making a choice. Here are some types to consider.
1. Reciprocating Air Compressor
Reciprocating air compressors takes in atmospheric air with the help of suction filter/intake valve, this air is then compressed by using a single acting piston or double acting pistons. Reciprocating air compressors lowers the volume of air or CFM, which increases the pressure. The machine consists of copper intercooler pipes that act as a coolant for the compressor. It is a Portable air compressor that does not require any foundation. Reciprocating air compressors come in various sizes and capacities to suit different needs and applications. Reciprocating air compressors are commonly used in automotive workshops, natural gas processing, chemical plants, oil refineries, agriculture, and refrigeration technology.2. Rotary Screw Compressor
Rotary screw compressors use two rotating screws also known as a male and female rotor, to produce compressed air, these compressors provide higher lower volume according to lower/higher pressure. Screw compressors are silent compressors that also help reduce the electricity costs making them the most efficient air compressor type. They can be used in various applications, including dental vacuum systems. These compressors can have single-stage helical or spiral lobe oil-flooded screws. Rotary screw compressors are typically oil-cooled. Rotary screw compressors find applications in various industries such as food and beverage, textile, manufacturing, and medical. They are used for tasks like manufacturing high-quality components, storing and delivering food, preserving plasma and tissues, and stockpiling medications and vaccinations in remote areas.3. Centrifugal Air Compressor
Centrifugal air compressors are a type of rotary compressor that uses a rotating impeller to transfer energy to the air. They are oil-free and ideal for applications that require high capacities. Centrifugal compressors produce less noise and vibrations compared to other compressors, making them a popular choice in many industries. Centrifugal air compressors are commonly used in various industries, including oil refineries, chemical industry, water treatment industry, and shipping industry.4. Oil Free Air Compressor
Oil-free air compressors are a type of compressor that does not require oil for lubrication. Both piston and rotary compressors can be oil-free. These compressors are ideal for applications that require clean air with continues and heavy duty running and no risk of seizure and compliance with ISO regulations. The absence of oil in the compressed air also makes it suitable for use in sensitive applications such as food processing and medical equipment. Oil-free air compressors are commonly used in various industries such as food and beverage processing, pharmaceuticals, manufacturing, water treatment, chemical and petrochemical processing, automotive industry, textile industry, medical industry, and semiconductor and electronics manufacturing.5. Scroll Compressor
A scroll compressor features two interlocking spirals or scrolls that compress the air. It includes an orbiting scroll and a fixed scroll that gradually compresses the air in the chamber. The design provides 100% oil free compressed air without any oil-water-dust emulsification, higher efficiency, lower noise levels, and longer lifespan compared to other compressor types. Scroll compressors are used in various industries such as Laboratories, Medical Operations, Dental Clinics, Diamond Industry, Food Industries, Printing Machines, Nitrogen Generators, Premium Spray Painting, Glass coating, and Semiconductor Manufacturing etc. For a more detailed description of these different types, you can refer to our guide that features comprehensive information about the different types of air compressors.C] Things to Consider While Purchasing Air Compressor for Specific Industries
1. Tool Demands
To find the right air compressor, it is important to know the PSI rating of the tools you plan to use. If your air compressor cannot handle the required PSI, it will not be able to power your tools. Higher PSI air compressors require more powerful tools to be compatible. High PSI air compressors are commonly used in industries such as railroads, iron and steel, and paintball.2. Portability
There are two main types of air compressors: Base mounted air compressors and portable air compressors. Base mounted air compressors are stationary and connected to a vertical air receiver that cannot be moved, while Portable air compressors can be easily moved from one job site to another.3. Source of Power
Air compressors can be powered by various sources, with electricity being the most commonly used. However, there are also gas-powered air compressors available, which are primarily designed for heavy-duty industrial use. These models are often portable and can be used at job sites where electricity is not available. Gas-powered air compressors are utilized in a variety of industries such as food processing, construction, mining, and agriculture.4. Cubic Feet per Minute
CFM is a unit of measurement used to determine the volume of air moved by a compressor. It is important to note that the CFM value varies depending on the PSI (pounds per square inch) of the air compressor. For every PSI, the air compressor will have a different CFM value. To compare two air compressor models, it is essential to compare their CFM at the same PSI. A high CFM air compressor is specifically designed to have a high flow rate, making it suitable for use in professional settings such as automobile shops and the construction industry.5. Horsepower
Nowadays, in addition to PSI and CFM ratings, air compressors are also equipped with horsepower ratings. The horsepower of a unit indicates the amount of power it can produce. While smaller products may function well with lower horsepower ratings, a high horsepower air compressor is typically essential in an industrial setting. These compressors are extensively used in various industries such as oil & gas, manufacturing, power generation, healthcare, construction, and mining.6. Tank Size
Any tank-mounted air compressor will have a tank of a particular size. The size of the tank required depends on the nature of the work being performed and the tools being used with it. Tank sizes are usually denoted in LTR, so it is essential to be aware of this. If you only use pneumatic tools for short periods, a smaller tank may suffice. However, for extensive projects that last throughout the day or longer, a larger tank is necessary. In the automotive industry, an air compressor with a bigger tank size is a highly reliable tool, and it is in high demand in car and truck garages or workshops. It is particularly useful in car repair centers.7. Available Features
When purchasing an air compressor, you have the option to choose from various features. For instance, you can choose between a belt-driven or direct-drive air compressor. You can also decide whether to opt for an oil-free pump or not. Pumps that don’t require oil are less expensive to maintain than those that do. Air-powered pumps, for instance, are used in dairy farms for milking cows. Additionally, you can choose whether to have air cooling systems, an adjustable exhaust, or more than one coupler. To determine which features are best for you, it is important to conduct research and make an informed decision.D] Conclusion
Purchasing an air compressor requires careful consideration and thorough research. There are a variety of factors to consider, such as the power source, CFM and PSI ratings, horsepower, and tank size, as well as the various features available. We have shared them in our detailed buying guide for air compressors above. It is important to assess your needs and the specific requirements of the tasks you will be using the air compressor for. By doing so, you can make an informed decision and select the most appropriate air compressor for your needs. A well-chosen air compressor can be a valuable tool for a wide range of applications, especially for industrial uses.
If you are looking to purchase air compressors in India, you should reach out to us without any hesitation. We are always here to help you find the right air compressor for your required industrial applications.