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A compressor is a tool used to increase the pressure of air above that of the surrounding air. It raises the pressure of the extracted air by compressing it. It is referred to as a mechanical, pneumatic device that transforms the kinetic energy of air into potential energy using electric motors or IC engines. An air compressor is not the same as a pump because the former only uses gas or air, while the latter only uses liquids.

Air compressors are widely utilised for running machinery and tools that need high-pressure air in a variety of industries, including construction, manufacturing, and automobiles. They range in size from compact, portable units to massive industrial compressors. 

Types of Compressors

Various compressor types are available and divided on the basis of air pressure, flow rate, working principle, and other factors. The following are broadly classified compressor types:

Reciprocating Compressor 

Reciprocating compressors are commonly considered on smaller job sites, such as garages and house construction projects. In order to boost air pressure and decrease cylinder capacity, reciprocating compressors use a piston. These compressors work best in unaffected areas because they are typically noisy and have poor air quality. 

Reciprocating compressors generate pressure by compressing and displacing air within a cylinder using a piston. Reciprocating compressors can be single- or multi-stage, which defines what pressure ranges they may operate in. 

Rotary Compressor

Rotary compressors typically constitute massive industrial-sized machinery that can be maintained with oil or run dry. Considering that they have an integrated cooling system, they need little upkeep. Rotating compressors have a low noise level, require little maintenance, and are incredibly dependable and efficient. 

Rotary screw air compressors produce energy by rotating two internal rotors in the opposite directions. As the air gets stuck between these two opposing rotors, the pressure inside the frame increases. Given the inbuilt cooling system, these air compressors have been designed for continuous usage.

Centrifugal Compressor

In centrifugal compressors, the air rushes radially outward from the blades rather than along a shaft. Air passes through the system via a 90-degree angle perpendicular to a rapidly rotating disc. These compressors are widely recognized for their capacity to offer high flow rates while also handling high-pressure applications. However, regular repairs and upkeep are required to ensure maximum efficiency.

Centrifugal compressors are highly efficient energy converters that work by continually running air through a series of stages that compress and cool the air. An impeller draws air in, which pushes it outward and accelerates it. This kinetic energy is eventually turned into potential energy as the flow slows down by a diffusion device.

Axial Compressor

Axial air compressors are widely found in aviation engines and gas turbines and use rotating blades for compressing air. These compressors are appropriate for the petrochemical and power-generating industries since they have low-pressure ratios and high flow rates.

Axial compressors feature rows of fan blades inside a shaft instead of an impeller. The air steadily gains velocity as it moves through each row, which raises the pressure. These compressors work at greater speeds and are usually lighter and smaller compared to the centrifugal compressors. 

Factors to Consider Before Buying Compressors

The compressor specifications are a major factor when determining which one to buy. Several factors can impact your decision on the choice of air compressor. Here are some contributing compressor specifications. 

Compressor Types

It is important to think about what kind of air compressor best fits your needs before making a purchase. Every kind has distinct qualities and capabilities. Different compressor types have different characteristics, such as duty cycle, flow rate, and output pressure, which influence which models are most appropriate for a given application.

Power Source

You can use either gas or electricity to operate your air compressor. Your choice of air compressor depends on location and how your company is operated. 

If your business involves outdoor activities or operates in severe weather, go with a gasoline compressor. Although it has a high initial cost, a petrol-powered compressor is mobile and requires little maintenance.

On the contrary, electric-powered compressors are widely used and require a consistent source of electrical power to operate. These devices are inexpensive to purchase, but they require a lot of maintenance.

Tank Size and Pressure Rating

The pressure rating directly impacts the pressure when the compressor distributes air to pneumatic devices or equipment. PSI calculates the force that compressed air exerts. It assesses how well it can carry out particular activities. For compatibility and efficient operation, the maximum pressure requirements of your equipment or tools must match the compressor's PSI rating.

The volume of compressed air that is ready for usage is influenced directly by tank size. A larger tank holds more compressed air for high-demand or continuous uses. This lowers pressure, ensures constant airflow, and minimises the prospect of repeated cycling.

Duty Cycle and Airflow Rate

How many times will the machine run? If your business is open all the time, invest in a continuous-duty air compressor. This type of device will keep your appliances running around the clock and prevent complications from developing. Ask for an expert to help you determine the duty factor of the air compressor and help with proper compressor installation.

For constant tool performance, the airflow rate generated by the compressor is indicated in CFM. It determines if the compressor can supply enough air to operate pneumatic instruments as effectively as possible. To avoid performance issues like reduced power or unproductive tool operation, make sure the compressor's CFM rating meets or exceeds the requirements of the tools you plan to use.

Top Brands

L&T SuFin provides premium quality compressor brands from which to choose. Here are the top brands from which to get an air compressor.

Emerson 

Emerson is a global leader in software, technology, and engineering that spurs innovation to create a more secure, intelligent, environmentally friendly, and healthier society. Emerson's compressors offer cutting-edge monitoring solutions that decrease unscheduled downtime, enhance decision-making, and prevent HSE events by providing proactive analytics and responsive machinery health data.

Camel 

Camel has worked incredibly hard for over 75 years to build strong goodwill. They are renowned for the creativity of their concepts, solutions, goods, and services. Customer satisfaction is their top priority. To meet the diverse needs of customers, they offer an extensive selection of air compressors in various specifications. These devices also have a solid track record among customers for their excellent performance. 

ELGi 

With over 62 years of air compressor production history, ELGi is a world leader in sustainable compressed air systems. ELGi creates and manufactures a wide range of cutting-edge air compression solutions for a number of industrial applications. 

In addition to ELGi's distinctive features of reliability and energy efficiency, their air compressor machines address industry-specific criteria such as cost-effectiveness, robustness, zero oil tolerance, and accurate airflow. They offer compressed air specialists to assist you in assessing your requirements and duty cycle so as to choose the best compressor for your use. 

Compressor Price and Model Chart

Why Buy Compressors from L&T SuFin?

The top compressor brands in India are available at the lowest prices at L&T-SuFin. Shop for compressors online from India's top marketplace for industrial tools, construction goods, electrical equipment, and machinery. Get the highest-ranked sellers to deliver efficient and durable compressors like Air Line compressor and Techno Air compressors. Get quotes for large purchases and take advantage of our amazing deals on compressors. Additionally, you can enjoy L&T SuFin's financing and logistics services.

FAQs About Compressors 

Q1. What is the difference between a motor and a compressor?

A motor is an electrical device that transforms electrical energy into mechanical energy, which is then used to power other devices like fans and compressors. In contrast, a compressor is a machine that increases air pressure by compressing (decreasing volume).

Q2. Do compressors use motors?

All compressors are equipped with an engine and a motor. The motor powers a crankshaft, which spins pistons that generate compressed air via a complex mechanical mechanism. 

Q3. What is an HVAC compressor?

The tool that circulates refrigerant throughout the air conditioning system is called an air conditioning compressor (HVAC compressor). It is a vital element of an air conditioning unit since it enables the heat pump to function. Prices updated as of 21st May 2024