Control Atmosphere Cold Storage

Storageequipment

Machines from Van Amerongen have beendeveloped with the aim of keeping energy usage as low as possible. This isvital as energy prices are rising quickly and a competitors very cheapsystem could turn out to be extremely expensive if energy consumption is takeninto account. We only use the best parts our machines. Sound German pumps, thebest active carbon and reliable electronics. The equipment can then last for15-20 years without any major problems. 

Our equipment is very low maintenanceand one of our machines will usually only require limited maintenance every2,000 or so hours. The fact that we work with low pressure and oil-free pumpsmeans that wear and tear is kept to a minimum. This also ultimately contributestowards cost savings.

VPSA N2 generators

VPSA technology (Vacuum Pressure Swing Adsorption) is based on an energy-efficient, low pressure technique. A VPSA can both circulate and inject. During circulation, the residual oxygen level reduces along with the oxygen in the storage cell. Circulation is the most energy efficient mode for lowering the oxygen level in a storage area. So-called pull-down time is an indication of the time necessary for circulation to bring your storage cells to the required oxygen levels. During circulation, the VPSA reduces the oxygen concentration in the cell up to 30% quicker than when injecting.

The advantage of injection is that a cell can be kept at slight over-pressure so that ULO conditions (ultra low oxygen, <3%) are even possible in a storage area with a minor leak (ask your cool cell constructor or Van Amerongen for further advice). With the VPSA, you can switch between injecting and circulating and vice versa at any given moment.

Advantages of Van Amerongen VPSA O2adsorbers;

Theoil-free blower used in our VPSAs ensures that the active carbon is not contaminated by residual oil, resulting in its life-expectancy more than doubling. Furthermore, the active carbon filter is cleaned by means of a vacuum technique, allowing it to remain free of dirt and moisture. This makes our VPSAN2 generators the most durable and energy-efficient!

CO2 adsorbers

Fruit breathes: it uses oxygen (O2 ) and produces carbon dioxide (CO2 ). A CO2 adsorber removes the carbon dioxide (also referred to as carbonic acid) that forms from your storage cells in order to prevent concentrations getting too high and causing damage to your fruit. 

Determining the capacity of the CO2  adsorber

The advantages of our CO2  adsorbers;

unique system of sieve and distribution plates Aunique system of sieve and distribution plates enable our CO₂ adsorbers to be upto 30% more efficient.

minimal oxygen addition via the lungsystem The VA lung (buffer) system ensures there is minimal addition of O₂ during the removal of CO₂. 

Cold store accessories

Next to CA/ULO installations, Van Amerongen also supplies all accessories necessary for installation and maintenance. 

Combimeters and hand meters

Van Amerongen provides in a range of gas analysing equipment, like O2 -and CO2 meters. Combi meters are always built-in in our control systems. Of course, we can also provide in hand meters which can easily measure the O2 andCO2 values in your cold store,any time you like.

Flexibleair buffers (Lungs)

Overpressure and under pressure valves

Under extreme circumstances, an air buffer is insufficient to absorb pressure differences. In that case, an over/under pressure valve can absorb the pressure difference in your storage room to prevent damage. This safeguard is triggered at an over/under pressure of approximately 10mm WK. Each cold store used for CA/ULO storage needs at least one under pressure valve and one over pressure valve. Multiple valves are used for larger cells.

Cell valves

Scrubbers are connected to the cold stores by means of PVC pipes. Depending on the type of machine, pipes with a diameter of 50 to 160mm, and corresponding cell valves, are used. Our cell valves are pneumatic and therefore very reliable and durable.