DST’s role in Cold Stores

DST dehumidifiers can effectively maintain steady RH(relative humidity), preventing condensation and frost formation. Watch how our cold store application installation is 5 times more efficient and effective when installed at the loading Bay Area as opposed to the -20 degree space. 

Useful applications of dehumidification in aircrafts

Spitfire aircraft use Merlin engines, which have similar problems to most engines during standby, where corrosive exhaust gasses effect internal component and then require more frequent expensive maintenance works. Other aircrafts such as Mustangs and Kitty Hawks also use a Merlin engine.

Bernd (Bernie) Heuser Chief Engineer of The Old Aeroplane Company and National Air Museum found, by purging with dry air using DST model DC050 after running the engine, the pollutants are substantially displaced, and remaining compounds are made less corrosive with low humidity air. Otherwise, ambient humidity is contained within the engine and due to the thermal inertia, condensation can even form (see example).

Corrosion typically requires four components to implement the corrosive circuit. These are the anode (the positively charger material), the cathode (the part which corrodes), the electrolyte (typically water or water vapour) and air for completion of the circuit. The elimination of any of these contributions will halt the development of corrosion.

Lithium Battery Improvement

DST are the market leaders in the design and supply of ultra low humidity air systems for battery manufacturing clean rooms. In China DST supplied over 400 Lithium battery production rooms benefit from DST and Seibu Giken technology for 1%RH. In Australia we have provided 2 systems for lithium batteries, so we hope to see more local growth of this important technology.

A dry air supply at 0.05%RH at 20°C (-60°Cdp) can be achieved using our standard D-Max silica gel rotor.

The processes used for manufacturing Lithium ion batteries are very similar to those used in the production of Nickel Cadmium cells and Nickel Metal Hydride cells. The anodes and cathodes in Lithium cells are of similar form and are made by a similar process. There are however some key differences associated with the higher reactivity of the chemicals used in the Lithium cells.

The electrolyte filling and sealing stage of cell manufacture must be carried out in a “dry room” since the electrolyte is highly reactive with moisture. Moisture causes the electrolyte to decompose with the emission of toxic gases.

One of the most commonly used electrolyte materials, Lithium Hexafluoride, forms toxic hydrofluoric acid (HF), Lithium Hydroxide and Hydrogen Gas when exposed to moisture.

Crucially, moisture sealed inside the battery can continue to react after the battery is completed, significantly reduces its lifespan.

Some of DST references in lithium battery manufacturing:
• Beijing Dalutaiji battery ltd.
• Bolixun Li-poly Battery Co., Ltd.
• BYD Lithium Battery Co., Ltd,
• China aviation lithium battery Co., Ltd,
• Guangdong Jiefeng Air Conditioning Co. Ltd.
• Guangzhou Yi’an new energy ltd.
• Nanjing LG Chem New Energy Battery Co., Ltd,
• Shenzhen Kebiao purifying equipment Co., Ltd 

See how DST can help select the right dehumidifier for your clean room.

1 300 002 228. info@dstdryer.com.au

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La Nina to hit Australia this summer

The BOM assessment of conditions in the Pacific and Indian oceans have indicated we have a 70% likelihood of a La Nina this summer. During La Nina years, Eastern Australia typically has wetter than usual summers.

This moisture can be controlled with a Desiccant Dehumidifier to ensure stable storage conditions, maintain productions levels and prevent mould and condensation.

See the full article below.

http://www.smh.com.au/wa-news/predicted-la-nina-could-prep-northwest-wa-for-a-bumper-wet-season-20171122-gzqsz4.html

Energy Saving at DST

New technologies are used wherever possible to allow our products to utilize energy efficiency control. Our programmable logic control (PLC) systems can increase operating efficiency, lower carbon emissions, and reduce running costs; factors that may be crucial for environmental certification.

PLCs (C2 and C4) are tailored to ensure the highest operating efficiency is achieved for each specific project. PLCs can be used independently, with one of our digital controllers (EH3 & EH4) or interlinked with a building management system (BMS).

Solutions for National Archives

We have been lucky enough to assist the Australian National Archives with humidity control. Preservation and maintenance is essential for the 40 million+ items of national memories that are exhibited online and in person.

Back in 2012, National Archives Villawood had DST model RA061R installed which has since proven to be efficient and reliable with no component replaced in its first 8 years other than our standard filter replacements.

Reach out or visit our website for more information!

Dry air for New Zealand national treasures!

The Treaty of Waitangi is an agreement that was signed by the British Crown and Māori in 1840, enabling the British settlers and Māori people to live together under a common set of laws. – nzhistory.govt.nz

February 6th 1840

Like any other document, it is susceptible to relative humidity. Mould can occur and a fluctuation can expand and contract the structure of the paper. National archive storage’s of records 30 years and older in climatic regions: 20°C ± 2°C 50%RH ± 5, were connected to 4 RA and DC series units to stabilise the humidity.

Another national treasure is the score board at Eden park NZ, which was threatened by moisture in electronics which can affect the high-tech display. Model DC31 was able to control to 35%rh within the enclosure.

Eden Park – Source (https://www.flickr.com/photos/kiwi/)

Unfortunately the dehumidifier is too reliable to avoid recent scores with the Wallabies VS All Blacks…

Desiccant System Data Center

Installations of Desiccant systems in data centers have proven effective in Australian humid climate with DST model RZ101 and DC031 used in various Data centers and MRI in Toowoomba Townsville and Brisbane city

The compliance for humidity is important in data centers, and Data center cooling units are poor at humidity control due to the large heat load and efficiency running higher chilled water temperatures. Dehumidification of around 1/3 ACH of outside air to below setpoint allows the climate to be properly controlled.

 

DST model DC031 and RZ101

 

Corrosion and Prevention Conference 2017

DST Dryer Pty Ltd exhibited at the Corrosion and Prevention Conference 2017 at the Sydney International Convention Centre on booth 61.  We have written a technical paper for presentation on ‘Surface preparation applied to shipyards using Desiccant Dryers. Design and energy considerations’ which is also available by request. Here we analyse the methods of dry air dehumidification that is applied to corrosion prevention of ships, and investigate the energy and cost savings of using dry air as opposed to traditional corrosion prevention methods.

DST products have been used for corrosion prevention in Australia in various applications including:-

Noakes Shipyard, ADF weapons test on RBU 70 rocket launcher, C17 globemaster, ASLAV vehicles, Tiger helicopters, Grit blasting contractors including Dry air services, Ice rinks.

 

DST Dryer Installs Desiccant Dehumidifiers in third Sydney Gelatine Plant

DST Dryer has delivered several customers in Australia with gelatine Plants. Product features such as ease of access to the desiccant wheel for maintenance and cleaning was a big factor in this.

DST prides itself on its motto Economy. Efficiency. Environment. This motto was at the heart of these projects, which usually included gas hot water reactivation for 20%RH rooms providing a improved air quality and desiccant efficiency.