Developed in collaboration with external experts in aerodynamics,
using state-of-the-art technology, we are launching a new
high-efficient, truly reversible impeller - the TR7Z impeller -
suitable for wood drying, tunnel ventilation and radiator
applications.
The TR7Z impeller can be used in many different wood drying applications.
Typical applications are lumber kilns drying hardwoods and softwoods and
vacuum dryers for construction timber and wood for furniture.
The reversible impeller is also advantageous in radiator applications.
In off-highway equipment such as construction, forestry, agriculture,
and waste and recycling machines operating in environments with a great
deal of dust, dirt or airborne debris, there is a risk of the engine
overheating due to the radiator being plugged with debris. The truly
reversible impeller can prevent this by cleaning the cooler efficiently.
The TR7Z impeller is also a good solution for tunnel ventilation such as
road and rail tunnels, underground construction tunnels, wind tunnels etc.
where removal of heat, pollution, dust, and general ventilation is required.
The TR7Z impeller yields notable benefits when compared with our
ZREV impeller or standard impellers such as the 4Z or the 5Z mounted
in a reversible configuration. The TR7Z impeller is as the name says
truly reversible, which means that it can reverse airflow with equal
air volume. When a standard impeller operating in a reversible
configuration is reversed, airflow is reduced by two-thirds as the
back of the blades cannot generate as much air as the front. In
contrast, the airflow of the truly reversible blades is not reduced
when reverse, due to the symmetrical design of the S-profiled blade
– developed to produce equal air volume in either direction.
Another important benefit is that the TR7Z increases efficiency
hereby providing optimal performance. To examine the
efficiency of the truly reversible series, we initiated a series of
tests in our in-house wind tunnel, comparing the TR7Z impeller with
the ZREV impeller, and the 4Z impeller operating in a reversible
configuration running at 900rpm. These tests showed that the TR7Z
impeller has a 7 percentage points higher efficiency than the ZREV
impeller (Figure 1). Comparing the TR7Z impeller with the 4Z
impeller operating in a reversible configuration, the difference in
efficiency is even greater, with the TR7Z performing 13 percentage
points better than the 4Z impeller (Figure 2).
Figure 1
Figure 2
Available in diameters up to 1095mm in a 16 bladed hub, in glass
reinforced polypropylene, glass reinforced polyamide and aluminium,
mounted with different hub sizes, with flange, conical shaft or
straight bore, the TR7Z impeller can be customized to meet your
specific performance requirements.
Contact our experts to learn how the TR7Z impeller can optimize your
product.
