Custom air handling units based on standard components and modules

From office building to school or theater, from small to large and from new construction to replacement: whatever function, needs and technical challenges a building may have, Ned Air can always supply a suitable air handling unit. "We have an extensive range of standardized air handling units that can be assembled and scaled up completely according to customer requirements," says commercial director Hans Robben. "Here we can easily integrate customer-specific requirements such as air humidification, dehumidification, fine dust and HEPA filters, adiabatic cooling, sound attenuation, et cetera. Because no project is the same, all of our air handling units are built modularly. We work on the basis of standard components and modules, while retaining customer-specific options. This allows us to provide quality and affordable customization and allows our air handling units to be easily selected and quickly produced."

"The starting points for our air handling units are always the same," Robben says. "For example, with regard to the choice and size of the panels. At the base are panels of 35 centimeters, with which step by step any size air handling unit can be realized. Both in height, length and width. Based on the chosen heat exchanger (heat wheel or counterflow exchanger), we put together a basic air handling unit, which we can then expand lengthwise with any heating, cooling and changeover coils, silencers and other functions. Of course, all of our cabinets comply with the ErP directive (Ecodesign). In addition, we are happy to include additional subsidy, noise and other requirements."

With EveryLine, Ned Air offers a series of energy-efficient air handling units with heat recovery, where the heat exchanger and fans are already pre-selected. "Unique to the air handling units is the patented air separation module (LSM), which combines two counterflow plate exchangers in one compact unit and transfers heat from the outgoing air flow even better to the incoming (fresh) air flow," Robben said. "Low internal resistance prevents unnecessary flow noise and has a positive impact on energy consumption. The LSM comes standard with a bypass face damper, which also allows summer night ventilation (free cooling)." EveryLine is ideally suited for rooms where many people are present and where control of CO2, pressure and/or relative humidity is required. "A total of nine standardized models are available, with air flow rates from 350 to 12,500 m3/h."

If larger air volumes, cooling and/or moisture recovery are desired, the RotorLine offers the solution. Within this series, Ned Air offers eight models with airflow rates from 2,400 to 44,000 m3/h. "When purchasing, installers and clients can choose from a number of fans, heating, cooling and changeover coils and three energy-saving heat wheels: a condensing wheel, an enthalpy wheel or a sorption wheel," Robben said. "All heat wheels have sealing strips to minimize air leakage. Also unique is the design of the aluminum fins, which optimizes heat and moisture transfer. In addition to a vapor recovery efficiency of 85%, RotorLine is able to achieve a moisture recovery efficiency of as much as 90%, resulting in substantial savings on installed cooling capacity."

By working with pre-selected products, the technical specifications and performance are already fixed. "This offers advantages, for example, in projects in which the Total Cost of Ownership must already be calculated in advance," Robben said. "But also when applying for subsidies, such as the Energy Investment Allowance (EIA)." If standardized solutions are not possible - for example, in the case of renovation and transformation projects - Ned Air can also provide 100% customized solutions in which both the cabinet sizes, fans, heat exchangers and batteries are selected separately. "This allows us to offer the best possible functional and energetic solution for every building and every demand."

In addition to supporting installers in the selection and engineering of air handling units, Ned Air provides various training and knowledge sessions on air technology. Both on site and in its new instruction room in Kampen. "In addition to information about our concepts and the choices available, we share general information about air treatment," Robben said. "For example, what happens to the fresh (outside) air when it is passed through the air handling unit? What is the function of the heat exchanger, fan, coil and other components? And what influence do they have on temperature and humidity? Here we use, for example, the Mollier diagram, which helps to map the climate in a building and to select the right climate installations. Within the theme of control technology, we explain which parameters can be changed remotely. But also how possible malfunctions can be viewed and solved remotely. In our instruction room in Kampen we also have a working air handling unit, which we like to use to explain the intricacies of maintenance and service to installers. Installers interested in this can schedule a training appointment through their Ned Air area manager, in which we naturally include specific requirements. In doing so, we also offer customization at the training level."