Why
is Compressed Air Useful?
2.
Rotary Screw Compressors
Proportioning the Compressed Air Dryer
Trying to figure out which air dryer capacity is best for you? Here are some factors to consider. Read More…
What Do I Need to Know When Buying an Air Compressor?
Why
is Compressed Air Useful?
The compressed air energy contained within a balloon is equal to the energy required to inflate it. The energy is stored as pressure.
When the balloon bursts, the pressure equalizes and the energy is released. This energy can be used to complete work.
Two Types of Air Compressors:
1. Piston Compressors
How do they work?
Just like an engine of a car, as the pistons rise, they press the air into a tighter space which creates pressure. Compressors can have 1 stage or 2 stages of compression.
Single-Stage Piston air
is compressed once and then discharged. Max Pressure = 130 PSI. Two-Stage Piston air is discharged once in a low pressure side and again in a higher pressure side before discharge. Max pressure = 175 PSI.
Advantages of Piston Compressors:
- Low Price
- Easy to Understand
- Simple to Maintain
Duty Cycle: Piston compressors generate a lot of heat during the compression process, they are restricted to the
amount of time they can operate. This is what we can the "duty cycle". Single-stage pistons normally have a 50%
duty cycle and two-stage pistons have a 75% duty cycle.
2.
Rotary Screw Compressors
Rotary Screw Compressors:
Variable Speed Compressors Quiet Rotary Screw Compressors
Rotary screw compressors act like superchargers in a sports car. Two helical rotors match each other and rotate together. As they do, air is squeezed into a smaller and smaller cavity, creating increasing pressure. A thin film of oil lubricates the rotors and keeps them from overheating.
Advantages of Rotary Screw Compressors OVER Piston:
- Runs cooler so it can operate continuously - More stable pressure - Air always available when you need it - Low sound level- 7 times quieter than a Piston - Better work environment for your team - Lower Oil Carryover - Reduces product contamination - BEST choice for painting - Better for the environment
Sizing the Compressor
To size the compressor, we need some basic information.
1. Maximum Operating Pressure: - Look at the pressure ratings on the equipment - Are there any known pressure issues?
2. Total Air Requirements (Total cfm) - Add up all the cfm ratings on the equipment (they are listed on all tools) - Do you want to wait on the compressor for air? - How many tools are you using at once? - Have existing compressors and storage tanks?
Calculate the Correct Air Requirements 1. Determine the total air requirements (in cfm) for all equipment 2. Make adjustments: - Add 10% for leaks and growth in business - Use consumption x 1.5 for piston compressor - Use consumption x 1.0 for rotary screw 3. Determine final air requirement in cfm for the equipment 4. Check your air requirements with the "benchmarks" below on the number of workers
6.5HP 50L Cast Iron Petrol Air Compressor SF302 KOHLER
$1,950.00 NZD exc.
$2,242.50 NZD inc.
$2,242.50 NZD inc.
3HP 100L Belt Drive Cast Iron Piston Air Compressor SF302HD
$1,900.00 NZD exc.
$2,185.00 NZD inc.
$2,185.00 NZD inc.
3HP 50L Belt Drive Cast Iron Piston Air Compressor SF302HD
$1,750.00 NZD exc.
$2,012.50 NZD inc.
$2,012.50 NZD inc.
5.5HP 30L Twin Tank Petrol Air Compressor (12.4 cfm, 10 bar) CPBA-55E
$1,433.90 NZD exc.
$1,648.99 NZD inc.
$1,648.99 NZD inc.
3HP 100L Belt Drive Piston Air Compressor CPBA-3100
From
$1,306.90 NZD exc.
$1,502.94 NZD inc.
$1,502.94 NZD inc.
3HP 50L Belt Drive Piston Air Compressor CPBA-350
From
$1,019.90 NZD exc.
$1,172.89 NZD inc.
$1,172.89 NZD inc.
2.5HP 50L Belt Drive Cast Iron Piston Air Compressor 'Ironman' CPBC-2550
$968.90 NZD exc.
$1,114.24 NZD inc.
$1,114.24 NZD inc.
2.5HP 50L Belt Drive Piston Air Compressor CPBA-2550
From
$896.90 NZD exc.
$1,031.44 NZD inc.
$1,031.44 NZD inc.
1.5HP 50L Oil-Free Air Compressor with Filter Regulator (5 CFM)
$745.00 NZD exc.
$856.75 NZD inc.
$856.75 NZD inc.
2.5HP 24L Direct Drive Piston Air Compressor CPDA-2524 (9.5 cfm)
$435.90 NZD exc.
$501.29 NZD inc.
$501.29 NZD inc.
2.5HP 50L Direct Drive Piston Air Compressor CPDA-2550
$397.90 NZD exc.
$457.59 NZD inc.
$457.59 NZD inc.
1.5HP 6L Oil-free Piston Air Compressor CPRB 6
$322.90 NZD exc.
$371.34 NZD inc.
$371.34 NZD inc.
Ash Air has been around in New Zealand since 1979, and we’ve grown into a nationwide company with international support and a
reputation for quality and reliability.We look after all things compressed air for your business!
Ash Air's range of Chicago Pneumatic, Alup, Pneumatech, and Quincy compressors are used extensively around the world in industries
ranging from oil and gas to food, automotive and farming, and we bring you these world class compressors here in the land of the long white
cloud.Our technicians are compressed air equipment experts and are dedicated to addressing customer needs. Supported by a 13 locations
nationwide, Ash Air offers one of the widest selections of compressed air equipment and parts available today in New Zealand.
With Ash Air compressors, you can count on reliability and high performance for even the most demanding applications. We focus our
efforts on the following:
Talk to the team today:
Who we are and how Ash Air can help your business!
Reliability and Efficiency
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Why Replace CO2 with Nitrogen in your Brewery
Using nitrogen is not about fully replacing CO2, but it can reduce their consumption of CO2 by close to 70%. Using nitrogen is about sustainability. Creating your own nitrogen is easy and will reduce the use of a greenhouse gas, which is better for the environment. It will also save you money as early as month one adding that savings to your bottom line. Read More…
What do I need to know about ICONS?
ICONS: Intelligent Connectivity System: The insight into your compressed air system, wherever you are. Learn More about ICONS in this article here! Read More…
A question that is occasionally asked by our customers to Ash Air is 'what is the cost of compressed air?'Â This article looks at the product costs involved with compressed air, as well as minimising the energy cost of compressors and cost allocation. When looking at these factors, we need to realise what causes dropped efficiency of your compressor, leading to increased costs of compressed air. Read More…
