Rotary and the reciprocating AC compressor are both the components of gas transfer systems. Both of them serve the same purpose which is to bring gas in to the system. They exhale, exhaust and then repeat the same process. The reciprocating and the rotary AC compressors manage to do this by both changing the pressure at a certain points to be able to force the gas in and exhaust out.However, even though they both serve the same purpose, they have difference.
When you go out to shop for a new air compressor, you are most likely to be overwhelmed and get excited or rather become more confused on which make of a compressor you need to settle on. The first and most likely choice you will make is to whether buy rotary or a reciprocating compressor. Majority can’t differentiate the difference between the two, so reading through this article may enlighten you and help you to make the correct and perfect choice in future.
Reading below will help you understand better the difference between the two compressors and you will be enlightened to choose the best that would suit you best in time of purchase.
Reciprocating compressor: the compressor compresses the air with the pistons that always move up and down inside the cylinder.
Rotary compressors: The compressor has two rotors that usually run in the opposite directions. They trap the air between causing the compression to occur. The other significant difference between the two is that rotary usually screws air compressors while the reciprocating compressor operates with lower dBase. This is because the screws don’t move up and down like the pistons do. Rotary compressor basically operates with a minimal vibration and less heat unlike the piston compressor.
Reciprocating compressors: they are usually meant for sporadic use, especially when you need smaller amount of air. These types of compressors suits home owners well. They are the best and most appropriate to serve the needs of the home owners, workshops, small business entities, construction work and do it your-self- project. If your compressor is going to idle more than a third of time during the day then a reciprocating compressor would work best for your case. This is because rotary compressor doesn’t work well with down time.
Rotary screw air compressors: This compressor requires applications that are need continuous air. They are usually designed in a way that they need continuous air. The rotary compressor needs to operate throughout nonstop to enable it produce a strong and more consistent flow of air. These types of compressors are the best choice meant for commercial and industrial users that requires constant demand of air. The compressors are very durable and reliable especially they are put into situations where they are using a lot of demand. The rotary screws come into two types that are fixed speed and the variable speed.
One major difference of the two compressors is that, the reciprocating compressors use pistons while the rotary compressors don’t. A reciprocating compressor has its piston move downwards, the movement helps to reduce the pressure in its cylinder by creating a vacuum. The difference in the pressure formed tends to force the cylinder door to open thus bringing gas in. when the cylinder goes back up, the pressure is increased forcing the gas back out. The up –and- down motion formed is known as the reciprocating motion.
The rotary compressors use rollers. This roller usually sits slightly off center in the shaft of with one of its side touching the wall. They normally move at a very high speed and achieve the same objective as the reciprocating compressors. The one part of the shaft is usually at a different pressure than the other. This enables the gas to enter at a very low pressure than the other and exit at a very high pressure point.
The Advantages and disadvantages of two compressors.
In terms of efficiency, the reciprocating compressors are more effective than the rotary compressors. This is because they are able to compress the same amount of gas with less energy of about between 5 and 10 percent less energy input. All the same, the difference is so minimal most of the medium users prefer using rotary compressor.
The reciprocating compressors are more expensive thus requiring more maintenance. So majority prefers and find it not worth incur extra costs because of a very minor difference in efficacy. However, the large users are best and substantial served by the reciprocating compressors. They can are comfortable and can justify the added expense.
Below are the merits and demerits of both compressors.
Merits of a reciprocating compressor.
- It is easy to maintain the piston and the shafts since they both require care and maintenance. This is not an expensive procedure thus being affordable to the majority.
- The reciprocating compressor has the capacity to work at thrilling high pressure.
Demerits of a reciprocating compressor.
- This entire process usually releases the air at a very high temperature.
- While the compressor is functioning, you will usually experience vibration and very high noise which irritates the ears.
Advantages of rotary compressor
- The compressor is well designed for large-scale cooling. It’s the best for offices, factories, and the industries.
- They are very friendly since they don’t produce much noise as compared to reciprocating compressor.
- The out-coming air is also friendly since it’s not as hot as the one you experience with the reciprocating compressors.
Disadvantages of rotary AC compressor.
- This type of compressor is very costly compared to reciprocating compressor.
- This type of compressor is only used for a specific minimum period of time. They aren’t used throughout. They are better suited in offices and any other business enterprises.
It’s always very important that the customers study and get to know better how the AC compressors operate and function. The choice of the customer will be determined by the use. Improper use of the compressor might lead to corrosion of the metals. This may cause huge damage to the motors.