Press archive 2009

19 October 2009

Compact condenser is equipped with efficient EC HyBlade® fans

For economical cooling, each individual component of a refrigeration plant must be designed optimally for the specific application. A new condenser generation from Güntner with the innovative microox® technology in Plug-and-Play configuration shines with optimum values for efficiency and operability. Moreover, a new fan management system significantly reduces the operating noise level.

GVX condenser with microox technology, up to 15 % higher power density with a smaller footprint (Photo: Güntner)
GVX condenser with microox technology, up to 15 % higher power density with a smaller footprint (Photo: Güntner)
 
EC HyBlade® axial fans, high-performance, quiet, efficient and easy to control using EC technology (Photo: ebm-papst)
EC HyBlade® axial fans, high-performance, quiet, efficient and easy to control using EC technology (Photo: ebm-papst)
 
The new Güntner Motor Management (GMM) automatically detects connected fans, optimally programs and controls them according to known curves (Photo: Güntner)
The new Güntner Motor Management (GMM) automatically detects connected fans, optimally programs and controls them according to known curves (Photo: Güntner)

Even with all the other advantages compared to the predecessor model, the system also saves energy – and does so with a 15 % higher power density.

Components for refrigeration plants not only have to provide the required power, they should also be easy to operate and to service. The new Güntner GVX condenser with microox® technology offers not only these advantages, but others as well: Due to the modular design, the capacity can be quickly increased, which is particularly important in applications for supermarkets or in food processing. The aluminium material makes the condenser comparatively light, which makes it possible to install larger devices on walls without difficulty. The modern design provides for harmonic building integration (Figure 1). The aluminium design of the GVX with microox® heat exchanger improves the heat transfer and prevents galvanic corrosion. Due to the innovative microox® technology, the refrigerant capacity is substantially lower compared to conventional blocks. And to be able to offer the greatest possible energy efficiency, a similarly innovative fan concept was developed with a new control system.

The new Güntner GVX condenser series offers the option of using the energy saving EC HyBlade® fans from ebm-papst (Figure 2). The fan blades consist of a high-strength, corrosion-resistant aluminium alloy that is sprayed with a coat of fibreglass-reinforced plastic. The fans are aerodynamically optimised so that they operate very quietly with maximum efficiency. The integrated electronics of the EC motors enable continuous speed adjustment. To be able to offer a simple and "customised" control system for the condenser, Güntner developed a new controller, called the Güntner Motor Management (GMM), which assumes the control functions, programming and data evaluation of the EC fans. Based on various measurement data, the controller adjusts the speed of the fan depending on the pressure or temperature. The controller is connected with the fan drives via a data bus (Figure 3). It takes into account the programmed fan curves when making decisions and monitors parameters such as speed, electrical power, current draw, operating state, and error messages. For a new installation, replacement or expansion, the GMM automatically programs the fan being used so that time-consuming programming of individual components during commissioning is no longer necessary. Visualisation of the collected data is also possible. The accurate and easy-to-operate control system of the EC fans saves substantial operating costs over the system's service life and thus significantly improves the life cycle costs.

Katrin Lindner
Trade press coordinator
Phone: +49 7938 81-7006
Fax: +49 7938 81-97006
Katrin.Lindner@de.ebmpapst.com

ebm-papst Mulfingen GmbH & Co. KG
Germany
Bachmühle 2
74673 Mulfingen