There is something in the air

Grafrath, 04.05.2016

What we should already be aware of, in terms of ambient air at the installation location, during project planning

Salt, vinegar, smoke, chloride, cleaning products - all include products that can be corrosive to materials through the substances they emit into the air. The fine metals of a heat exchanger should be protected from these influences, to avoid corrosion and to ensure long-term functioning of the appliance.

Corrosion and corrosion protection is therefore an increasingly important topic in refrigeration and air conditioning technology. With regard to this, the first step is to identify and understand what is going on under certain conditions in the ambient air.

A corrosive atmosphere can not only occur indoors, where warehouse goods or manufacturing products emit substances into the air, but also in the open air, where environmental influences or industrial emissions have an effect on the appliance. Among the most important substances with harmful influences are carbon dioxide, carbon monoxide, hydrocarbons, ammonia, nitrogen oxides, sulphur compounds, fluorides, chloride, and their reaction products.

Particularly in the vicinity of ​​power plants or the aluminium, iron, steel and stone industries, an aggressive atmosphere emerges. Near water, on the other hand, the high concentration of chlorides can exert a material changing effect. Heat exchangers, which are exposed to these site conditions, will be destroyed sooner or later, if they are not specially protected. Heat, moisture, pollution or other environmental factors also increase this effect.

For effective corrosion protection, all these environmental conditions must be taken into account. Below is a selection of materials that are resistant to these influences protect the appliance from corrosion in the long term.

CABERO at China Refrigeration 2015

Next to ISH in Frankfurt and Climate World in Moscow, the third in the trio of major trade fairs is Refrigeration in Shanghai at the start of the year, at which CABERO was also represented with a light, airy island stand almost 100 sq. m in size. For three days, from the 08 -10.04.2015, Shanghai stood as the most important industrial city in China dedicated to refrigeration, ventilation and heating technology as well as the processing and storage of deep-frozen goods.

Old tradition — new technology

The event already has its own traditions; the beginnings of the trade fair's story stretch back to 1987. And thus it demands the participation of CABERO, a company that has enjoyed international standing for several decades as a leading provider of air-conditioning and refrigeration technology, and has a special connection to the area thanks to its production site in Yantai, China.

Technical development particularly benefits from international relations, as do customers and operators in turn. The various markets, needs and standards always provide new approaches for optimisation and a basis for exchange.

What was on offer...

The spacious booth that was open on all sides was the pivotal point and hub of the exhibition hall. Amid the stand's modern, bright, large-scale design, the latest technology innovations were presented along with the time-tested classics: evaporators and air coolers, insulated coolers, condensers and heat exchangers, and particularly efficient hybrid and adiabatic systems.

Thus a great atmosphere, technical know-how and catering ensured a basis for technical discussions and many new opportunities for profitable cooperation.

CABERO at Climate World 2015 in Moscow

March is the month of refrigeration and air-conditioning trade fairs. While the ISH, the leading trade fair for building technology, took place in Germany, Refrigeration starts at the beginning of April in China and Russia has already hosted Climate World. CABERO was and is represented at all three trade fairs by its respective managing directors together with their teams.

Technical discussions and successful ambience

With efficiency as the guiding theme, CABERO Eastern Europe welcomed visitors from 03 – 06.03.15 in Moscow. Sales engineers and developers demonstrated the CABERO company's entire product range — from evaporators, heat exchangers and condensers to adiabatic and hybrid systems and even specialist equipment such as insulated coolers.

Precise project examinations gave rise to detailed information about the devices and their modes of action. The focus was on individual solutions, for which the CABERO brand is well-known. Individual solutions that respond to individual requirements and thus create a unique characteristic of efficiency.

The CABERO extras

Whether as a pick-me-up or just an opportunity for some relaxed chit-chat, refreshing drinks and snacks also awaited our visitors.

In addition, CABERO Eastern Europe had prepared something special: on request, every visitor to the stand had their photo taken by a photographer. This was an ideal opportunity for a small, business photo-shoot with an industry backdrop that is superbly suited to the job.

Innovations, milestones and successes

CABERO at ISH 2015

Things were hotting up in Frankfurt, even in the refrigeration industry. Technical innovations, optimisations designed to boost efficiency, new guidelines and so much more provided ample material for 5 days of ISH, featuring several tonnes of technology, specialist presentations and a unique atmosphere at the stand. At the heart of it all was the star exhibit - a hybrid recoolers that performed using high-end technology.

Technology innovations - the centre point of an entire hall

"There's a draught here", mused one visitor, who, because of the optimised, quieter ventilators, didn't even realise that the unit was running at 80% capacity. The Flow Grits ensure greater air power with less current consumption and noise emissions.

Variable spraying was also a real crowd puller. With a significant efficiency boost, the new control steplessly regulates the spraying of the hybrid and adjusts precisely to the demand. The savings in terms of operating costs are considerable.

CABERO sets the bar in digitisation

The highlight for the industry was the control of the unit via an iPad. With the App, developed by Cabero itself, the unit can be controlled from anywhere. This marks a milestone on the journey towards digitisation. Product Manager M. Ugi demonstrated the function live in a presentation and attracted a crowd at the forum.

He also addressed the new VDI directives for water quality. As one of the fastest companies on the market, CABERO is steering its way along the guidelines with its expertise.

The CABERO sales team is able to travel home with its head held high. After all, contracts worth 7-figure sums were concluding during the fair.

Project report

The last instance in a proposed building efficiency chain How we use excess heat effectively elsewhere. And what happens, when our customers are satisfied?

Efficiency and sustainability are increasingly important requirements in building design. Not only because these form the basis of many image-building certifications, but also because the consequential cost reductions represent an added value for the end user and, ultimately, more comfort for the people in and around the object.

A structural revitalisation for an increased efficiency

The Migros cooperative's Zurich project "Santer" is a pioneer for efficient heat recovery in their building design. Recently, the Zurich area headquarters have undergone structural revitalisation. As part of this, the refrigeration system in the milk and meat distribution cooling zones has been fully refurbished. The aim was to remove the heat and simultaneously use it elsewhere. To do this, the heat is first re-used by a heat pump system, to produce hot water to supply the heating or defrosting of the installed cooling air cooler, for example. If no additional heat is required at this point, six CABERO recoolers are used to guarantee the required cooling capacity.

The operation of a heat exchanger

A fundamental element of the recooler is the heat exchanger block, which is made up of parallel fins. Tubes pass through these fins, that run the refrigerant - in this case, a water-glycol mixture - through the heat exchanger block. Fans draw ambient air into the counter current flow through the fins, thus ensuring that heat is extracted from the water-glycol mixture. The medium is discharged from the cooler at a significantly lower temperature

Higher rotational fan speeds the increase cooling performance. By spraying or wetting the fins in additional adiabatic systems, the cooling capacity can be further increased, or the same cooling performance can be obtained at higher ambient temperatures.

From the planning stage, through to the application: A perfect selection of devices

Four dry heat exchangers and two adiabatic dry coolers were installed throughout the plant to absorb temperature peaks, particularly in summer time, and to remove the heat when not needed. But here we have also thought of efficiency: Economic EC fans produce more air power, with lower power consumption and less noise. The built-in gold paint flakes in the adiabatic coolers are resistant to crevice corrosion and thus provide greater durability.

The special RAL 9006 white aluminium colour is adapted to the façade of the building, and thus fits perfectly into the overall optical appearance. In order not to interfere with the busy delivery centre business, the delivery of the equipment was planned for a Saturday. Migros and the planners were invited to the CABERO works in Hungary, to carry out a work site inspection. The two nearby cities Kaposvar and Mágocs include company manufacturing facilities , where it is planned to implement individual solutions, tailored exactly according to the requirements of the operators. Here, the two works complement each other perfectly. While one has existed for several generations and works with long-term employees and their experience, the other stands for youthful leaders for innovation and modernity. The strategic mix ensures that both sides learn from and share with each other. Experience on one hand - innovation on the other.

Information about the project: Michael Bruhn,, +49 8144 20 400 142