Archive: Nov 2018

A Definitive Guide to Sizing Your Air Receiver Tank

Leave a Comment

What Is an Air Receiver Tank?

Compressed air systems rely on air receiver tanks to cool air and remove water from the system. Air receiver tanks also function as temporary reservoirs during peak demand. While an air compressor does not need an air receiver tank to run properly, having one helps it run more efficiently.

Many factors govern air receiver tank consideration, including air tank capacity and air receiver tank size. Most importantly, you should consider your chosen air tank compressor’s ability to successfully integrate with your existing systems. We summarize below the four main factors to be considered during air receiver tank selection.

Minimizing Pressure Changes

Sizing Your Air Receiver TankAir receiver tanks should accommodate expected excess air volumes while allowing for pressure changes. Effective air receiver tanks reduce pressure variations to improve the production process. To help monitor and regulate pressure, the federal government requires receiver tanks to include pressure gauges and relief valves.

Meeting Air Demands

Most systems’ compressed air requirements fluctuate constantly, and the size of the air receiver tank should reflect these changes in demand. An incorrectly sized tank could lead to improper changes in pressure levels, causing pressure buildup or system failure. The air receiver tank should act as an emergency compressed air reservoir when the system experiences a demand spike beyond its main compressor’s capacity. An improperly sized tank may lead to a shortage in the system.

Energy Saving

Properly sized air receiver tank also save energy due to increased air processing efficiency. Compressors with air tanks lose less excess air to their surroundings, meaning they are able to operate on larger volumes of air at a time. Optimized efficiency also bolsters the system’s lifespan.

Safety Factors

Improperly configured air receiver tanks could pose significant risks to your employees. Inspectors should take proper care to ensure that the working pressure of the receiver never exceeds the allowable limit. Your air compressor system must undergo routine maintenance and inspections by qualified technicians. Crucially, inspectors must regularly drain the receiver, either manually or with an automatic drain system, to reduce potential unwanted pressure buildup.

Calculating Air Receiver Tank Size

Determining the best size for your system’s air receiver tank relies on many factors, including the potential for volume and pressure fluctuations, size and capacity of the compressor, expected temperatures, and the overall system. System demand and utilization factors determine maximum usage, and compressed air receiver tank sizes vary to accommodate the needs of a system. It is important to understand exactly what size compressor will work best with your system if you want to optimize the system and ensure that safety concerns are addressed.

Choosing What’s Right For You: Reciprocating vs. Rotary Screw Compressors

Leave a Comment

For many businesses in a wide assortment of industries, compressed air plays a crucial role in day-to-day operations. While many business owners recognize the need and importance of air compressors, they sometimes find it difficult to decide which type of air compressor would work best for them.

The two most common types of air compressors are reciprocating and rotary screw compressors, and each has its own unique advantages. Knowing the pros and cons of each type can help business owners make the right decision about which compressor will best fit their application requirements.


reciprocating air compressor

If you’re looking for an air compressor that will have a long lifespan, the reciprocating compressor may be a more appealing choice for you. This particular type of compressor is known for its longevity. When properly cared for and maintained, the reciprocating unit has the potential to last two-to-five times longer than a rotary unit. Therefore, while the upfront costs of a reciprocating compressor may be high, it’ll pay for itself over time.

Initial Installation

Reciprocating compressors are also known for their easy installation, which often means anchoring and securing the compressor to the floor to prevent it from falling or being knocked or pulled over. These types of compressors are typically used with an air receiver, which stores compressed air and helps to reduce the overall loaded run time of the compressor. However, the unbalanced forces and heavy weight associated with reciprocating compressors often translate into higher installation costs than rotary units. The need for a weighted base and a solid foundation can also contribute to increased costs.

rotary compressorConversely, rotary compressors are designed to stand by themselves, though some units may be mounted on top of an air receiver. Some packaged rotary compressors can also be mounted using simple floor anchors. While a receiver is not always necessary to use with this type of compressor––unlike the reciprocating unit––the use of one can help to improve the control air signal being transmitted back to the compressor’s controller, which grants greater air flow consistency. This consistency is a primary benefit of the rotary screw, offering a more cost-effective solution for applications that need to maintain steady, continuous volumes of compressed air.

Lubrication Needs

The two types of air compressors have different lubrication needs, which impact cost differences between the two options. While rotary compressors are usually oil-free/non-lubricated units, reciprocating air compressors can be either oil/lubricated or oil-free/non-lubricated,

Initially, a non-lubricated compressor costs approximately 10-15% more to install. Once in operation, however, power consumption costs and efficiency levels are similar to those associated with lubricated compressors. Maintenance can be the real cost differentiator, however. It may cost nearly four times as much to maintain a non-lubricated compressor over a standard lubricated compressor.

Learn More

Both types of compressors have their own unique advantages based on your intended application. The reciprocating compressor has grown in popularity because it has proven itself to be dependable, long-lasting, and hard-working. Ongoing technological advancements will only further enhance air quality and lengthen maintenance and repair windows. The reciprocating compressor often the best choice for applications that compress gases other than air, and that exceed or fall below the 100–150 psig range.

Meanwhile, rotary compressors are considered tried and true by many. Their portability and versatility make them useful for a wide range of common applications. Our experts can help you decide which air compressor is best for your needs.

At Compressed Air Systems, Inc., we specialize in providing high-quality compressed air solutions for our clients across industries and sectors. Since 1980, we’ve been committed to working toward our goal: To build the most efficient, most reliable, highest performing, easy-to-use air compressors anywhere. To lean more about our our line of rotary and reciprocating air compressors, contact us today! While you’re there, you can also learn more about our new rotary screw-powered VMAC Raptair G-30!