ErP directive demands high efficiency: EU focuses on “green” fans

By adopting the Kyoto Protocol, the European Union has undertaken to reduce CO2 emissions by at least 20 % by 2020. One measure for achieving this is the EuP directive (Energy Using Products Directive).

Component redundancy: fan arrays

Fan arrays are a simple new design for both new and old air handling installations.

Accurate production for correct fan values

At ebm-papst, innovation and quality are at the forefront of our activities. Documented performance data and the correct choice of fan are only part of the story. It is also crucial to ensure that the fan is constructed in such a way that it actually delivers the specified performance level in operation, regardless of the production date.

Modern chamber test rig guarantees correct values

At ebm-papst the product documentation for all fans is based on measurements taken on certified precision chamber test rigs. Constant internal monitoring of the test facilities used and the values obtained guarantees the consistently high levels of product quality and fan dependability you can always rely on.

Speed Control

The use of high efficiency fan systems is now common place. Driven by specific product regulations or the increase in electricity prices, the improvement of fan efficiency is on the radar of all end users. So what can the industry do?

Comparison of EC plug fan measured values as compared to calculated values

The true efficiency of a fan when measured is not equal to the product of the maximum individual efficiency levels of the motor, drive unit, control system and impeller. But why is that?

Reliable Data - Documentation and Fan Selection

Selection of the right fan on the basis of an application- specific operating point is only possible with reliable data and is generally performed with the aid of appropriate product selection software.

Full speed control without a VFD – EC fans from ebm-papst

Full speed control without a VFD! This is the beauty of EC fans with integrated speed control from ebm-papst.

Back to Basics - The Fan Unit

Combination of impeller, motor and control system

New generation EC plug fans for ventilation systems now available

The technology for centrifugal fans used in ventilation systems has advanced continually in recent years. The change is driven by growing demands from users, particularly with respect to control and efficient use of energy. Regulations such as Europe’s ErP (energy-related products) directive and Australia’s MEPS (Minimum Energy Performance Standards) have raised awareness of this issue considerably

TTM 06: Controls and Building Integration

Building automation systems (BAS) or building management systems (BMS) control a building’s internal environment and are essential in the running of energy demand management systems. These systems help to further monitor and improve energy performance of buildings and allow organisations to track and meet their environmental targets.

TTM-01: Determination of duty point of fanebm-papst fans for outdoor applications

Even though IP rating is an important factor in selecting the right product for a certain application, it is not the sole deciding factor. The ebm-papst protection class also needs to be considered.

TTM-02: Determination of duty point of fan

The duty point or operating point of a fan in a device is crucial information for selecting the correct fan product. This applies for new developments as well as for retrofitting of existing units. Not knowing the correct duty point can result in selecting the incorrect fan product and issues like the unit not performing properly, the unit being too noisy or power consumption being higher than expected can occur.

TTM-03: Fan System Replacements In HVAC Equipment To Improve Energy Use

Accounting for up to 50% of the energy consumed in Australian buildings, fans are the major contributor of energy used in air conditioning and ventilation systems (HVAC). Therefore the specification of high efficiency fans and fan upgrade projects provides a huge opportunity to significantly reduce energy consumption.

TTM-04: The relationship of system efficiency and speed control using VSDs vs. EC motors

This article investigates the use of induction motors with Variable Frequency Variable Voltage (VVVF) drives, also called Variable Speed Drives (VSDs) and EC direct-drive motors. Significant energy savings can be achieved in a variable torque application such as fans and pumps utilising affinity laws (power laws).

TTM-05: The Importance of Anti-Vibration Mounts to Avoid Resonance in Fan Systems

The selection of the AVM is critical, as an incorrectly specified product can be ineffective in its aim to reduce transmission of structure-borne noise, or cause the fan system to operate in resonance, leading to damage of the fan. In this month’s Technical Topic, we will look at the causes of resonance; the selection of AVM and a case study showing the effects of incorrectly selected AVM.

TTM-07: Back to basics, fan laws

An introduction to fans laws and where they can be used

TTM-08: Back to basics – impeller characteristics

If you want to move air, there is a variety of fan types to choose from, like axial fans, backward curved fans and forward curved fans. The selection very likely depends on your application, the direction of air flow you would like to achieve and most importantly the duty point for the fan. But it is important to know that each of these fan types come with its specific performance characteristic.