Coffee,
like all other food & beverage products, must go through a preservation process to keep the beans fresh during storage and packaging
before they reach the consumer. Coffee that is not properly stored after it is roasted will lose a large amount of carbon dioxide, which
lessens its' flavor and speeds up the staling process. One of the most common ways to preserve the freshness of coffee is the use of
nitrogen gas.
Storage
After roasting, coffee beans are often stored in large airtight containers for weeks if they are not ready to be packaged. This containers
are flushed or purged with nitrogen gas to preserve the life of the coffee and to push out any inside oxygen that could reduce the quality
of the coffee. An on-site nitrogen generator is ideal for coffee storage, because over time the generator will
continuously push nitrogen into the containers to keep the coffee fresh. Since nitrogen is colorless and odorless, this has no effect on
the flavor or appearance of the coffee over time.
Packaging
Once the coffee is ready to be packaged, it still needs to be preserved to increase the shelf-life of the product. The coffee beans are
dropped into a packaging machine, usually into a funnel or hopper at the top, and then dropped through the machine into bags where they are
flushed with nitrogen gas while the bags are filling and until they are sealed. Typically the purity of the nitrogen used in packaging is
somewhere between 99 - 99.9%. Similarly, K-Cups and other coffee pod type products also utilize nitrogen in their packaging. As the cups are
filled, they are flushed with nitrogen and then sealed to prevent oxygen and moisture from reaching the coffee. Oxygen levels are reduced to
less than 3%, providing an even longer shelf life for these pods.Â
Nitro-Brewed Coffee
Starbucks and other major coffee houses have added the latest "nitro-brew" trend of coffee to their menus in recent years. Nitro-brew is
coffee that is brewed with pressurized nitrogen gas, cooled down and stored usually in kegs and then served "on tap". Nitro-brew is
typically sweeter than regular coffee and smoother and can often contain more caffeine than regularly brewed coffee. Different from coffee
packaging, nitrogen is not used for preservation purposes in this case, but more for flavor and a different product quality. Consumers who
typically add cream and sugar to black coffee are more fond of the already sweet nitro-brew. The same process is also able to be implemented
into beer and various teas.
Nitrogen is essential to coffee manufacturers and coffee houses for both preservation needs and new, trendy products. Having an on-site gas
generator for both packaging/storage and brewing is ideal for constant access to nitrogen and to have the ability to control the purities
for various processes.
You can browse Pneumatech's on-site nitrogen generators for your coffee needs HERE.
Gas Generators
Pneumatech designs and manufactures both standard and engineered on-site gas generator products. Nitrogen and oxygen generators are
available with Pressure Swing Adsorption (PSA) technology, while also membrane technology is offered for lower nitrogen purity levels.
What are the advantages of on-site gas generation?
Gases are non-stop availableÂ
Lower operational costs: no rental charges, transport expenses and evaporation lossesÂ
No safety hazards when handling high-pressure cylindersÂ
Easy integration within existing compressed air installationsÂ
The right purity for the right applicationÂ
Returns on investment often less than two years
Pneumatech: Your guarantee of high-quality compressed air and gas.
Since 1966, Pneumatech has provided industry-leading compressed air and gas treatment solutions to production facilities across the globe.
Our innovative machines and accessories provide clean, dry air and gas to industries such as automotive, textile, power generation, oil &
gas, food & beverage, and electronics. We design equipment that is easy to configure, transport, use and maintain. And we provide
responsive service globally to ensure you get the most out of your equipment over its long lifetime. Furthermore, we have the capability to
engineer products to fit your specific applications.
Pneumatech Nitrogen Generator PPNG 6-68 S (up to 99.999% purity; up to 148 m3/h)
Who we are and how Ash Air can help your business!
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!
Reciprocating, Screw, air compressors
Vacuum pumps
Nitrogen
An extensive line of air treatment components
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.
Reliability and Efficiency
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:
Air compressors come in many types, rotary screw, piston, scroll, reciprocating, some are oil-free and other air compressors require oil
lubrication. Like many businesses, an efficient air compressor is at the heart of their operations. So, which type of compressor should you
choose? What makes a compressor, like a rotary screw, unique? Here are some clear cut benefits of equipping your business with a rotary
screw compressor. Â
Read More…
In the world of compressors, there are often significant and unutilized energy-saving possibilities including energy recovery, pressure
reduction, leakage reduction and optimization of operations through correct choice of a control and regulation system as well as the choice
of compressor size.We are going to take a look at some of the opportunities for minimizing the compressor’s operating costs.Â
Read More…
Many installations that produce compressed air offer significant and frequently unutilized energy
saving possibilities in
the form of waste energy recovery. In large industries, energy costs can amount to 80% of the total cost of compressed
air production.
However, a lot of this energy can be recovered, which in turn will save you a lot of money.Â
Read More…
Liquid water in compressed-air systems can lead to rusted equipment and unresponsive controls. Anyone who uses compressed air will, at some
point, find liquid water in the air distribution system. This can be anything from a nuisance to a serious problem, depending on the
application. If water might corrode equipment or introduce bacteria, removing it is critical.Â
Read More…
Liquid water in compressed-air systems can lead to rusted equipment and unresponsive controls. Anyone who uses compressed air will, at some
point, find liquid water in the air distribution system. This can be anything from a nuisance to a serious problem, depending on the
application. If water might corrode equipment or introduce bacteria, removing it is critical.Â
Read More…
Whenever most people think about a compressor, they probably have a piston compressor in mind. You might already know there are two basic
principles of air compression. One of those is the principle of displacement compression. There are a lot of compressor types that classify
as a displacement compressor. The piston compressor is one of them, oil-lubricated or oil-free.Â
Read More…
Once you have the size and type of
compressor figured out, one last question remains, should I go with an oil lubricated or oil-free air compressor. To not overcomplicate the
answer, your choice should be based on the application and process that the compressed air will be utilized in.
Read More…
Like all compressor types, rotary screw models do require periodic maintenance. Thanks to the simplicity of the internal components,
maintenance is relatively easy on most rotary air compressors. As long as you stick to a rotary screw compressor maintenance schedule, you
will likely be rewarded with many, many years of optimal productivity from your machine.Â
Read More…
Did you know, the biggest part of the air we breathe is nitrogen? Everyone needs oxygen to survive, however air is made up of 78% nitrogen,
only 21% oxygen and tiny amounts of other gases. Although, the human body does not use this nitrogen, it is very helpful in various
industrial applications. There is an unlimited source of nitrogen readily available, allowing you to achieve needed purity at a fraction of
your current annual nitrogen cost.Â
Read More…
If you notice that your compressor is getting hot and bothered, there may be heating issues affecting your air compressors performance. Did
you know that an overheating compressor is top of the pops for being the most common cause of compressor failure.Â
Read More…
A rotary-screw compressor is an air compressor that uses a rotary-type positive-displacement mechanism, typically used replace piston
compressors where large volumes of high-pressure air are needed, either for large industrial applications or to operate high-power air
tools.Â
Read More…
Have a look around and what do you see? What are you thinking about? Your next holiday to Queenstown maybe? You might go snowboarding with
the kids or have some alone time at the Day Spa. Whatever holiday you choose, compressed air is involved in some way, without you even
realising it! Â
Read More…
There are crucial reasons why you should service and maintain your compressor regularly, with the most common issues being piston failure
caused by wear of components, increased friction, corrosion, reduced cooling, overheating bearings and components, clogging of air filters.Â
Read More…
Our passion for energy efficiency and cost saving derives from the concern for our children’s future. Analysing the efficiency of your
system is a brilliant way to start saving.
Read More…
Compressed air is all around us, from the air in a balloon to pumping up tires on your bicycle. In this article we will explain what
compressed air is and how it is created. Whether you know it or not, compressed air is involved in every aspect of our lives, from the
balloons at your birthday party to the air in the tires of our cars and bicycles. It was probably even used when making the phone, tablet or
computer you’re viewing this on.Â
Read More…
One of the biggest challenges is to correctly size your new air compressor. Similarly to everything else, new compressors available on the
market are more efficient and employ better technology, therefore you have to understand the application and usage to size the machine
correctly. Choosing the wrong air compressor for your facility can lead to problems with production and or increased costs due to wasted
energy.Â
Read More…
Once you have the size of the air compressor figured out, the
next thing to do is to decide on the type of compresor you will need for your application - piston, rotary screw compressor etc. Let us take
a look at two of the most popular options available. When choosing the right type of compressor, you should ask yourself the following
questions:
Read More…
​Which vacuum pump do I need? - this is one of the most frequent questions we receive and this is understandable, because there are number
of technologies which can provide the same vacuum level and pumping speed. Here is quick advice on how to choose the best vacuum pump for
your needs.Â
Read More…
You may be asking, why does my air compressor start, then stop? Allow us to take the guessing out of it. We understand your pain. We know
that a compressor problem can quickly result in hours (if not days) of production downtime and loss of revenue. When your compressor
continuously shuts off from on, we refer that as a short cycle. There are a few reasons that a short cycle may be happening with your
compressor.Â
Read More…
Air compressor leaks are very common in all applications, but can be very costly and difficult to find. On average, 20-30% of the compressed
air used in a manufacturing plant is wasted as leaked air. Finding and fixing these leaks can save your business thousands of wasted dollars
a year.Â
Read More…
When installing a compressed air system into a business, people often look to PVC piping as an option to build a piping system because it is
cheap, versatile and easy to install. However, using PVC pipe in any compressed air application is extremely dangerous and NOT recommended
by multiple associations and manufacturers.Â
Read More…
Changing the oil and oil filters on your compressor is one of the most common routine maintenance tasks to perform to keep your compressor
running efficiently. After you remove your old oil and oil filter, you may find yourself wondering, “Where do I dispose of these?”, or “Can I
just throw them in the trash?”. Because oil is toxic and a pollutant, disposing of your old oil and filters is not as simple as just tossing
them in the trash.Â
Read More…
Coffee,
like all other food & beverage products, must go through a preservation process to keep the beans fresh during storage and packaging
before they reach the consumer. Coffee that is not properly stored after it is roasted will lose a large amount of carbon dioxide, which
lessens its' flavor and speeds up the staling process. One of the most common ways to preserve the freshness of coffee is the use of
nitrogen gas.
