DVkatalog uk 09 2015 V9 i

Plate Heat Exchanger DVQ
36
| Danvent DV • Plate Heat Exchanger DVQ
Function
Recuperative plate heat exchanger
with high efficiency.
Application
The plate heat exchanger is used
where there are special requirements
for separation of the two airflows,
e.g. in order to avoid transfer of
odours to the supply air.
Versions
S – Standard cross flow heat
exchanger
DVQ 10-150
Efficiency up to 65%
H – High efficiency cross flow heat
exchanger
DVQ 10-150
Efficiency up to 75%
C – Counter flow heat exchanger
DVQ 10-50
Efficiency up to 90%
Variants
The versions are available in 2
variants:
A Aluminium heat exchanger
Version S, H and C is used in ven-
tilation plants where the air does
not contain corrosive elements,
e.g. ventilation plants for com-
mercial purposes. Many chemicals
and solvents do not attack alu-
minum. This heat exchanger can
be used where the air contains
these substances. The conditions
should be evaluated for each
plant.
K – Corrosion resistant heat
exchanger. Version S and H.
The heat exchanger plates are
coated with corrosion resistant
synthetic material. Can be used in
plants where the air contains
elements which attack aluminium.
By-pass
The heat exchanger is supplied with a
built-in by-pass that can regulate the
heat recovery from 0-100%. The by-
pass function is comprised of a
damper for the heat exchanger and a
damper
for the by-pass airway. The
by-pass function is located in the
middle of DVQ-S 100-150, DVQ-H 100-
150 and D
VQ-C 10-50. Consequently,
the heat exchanger is divided.
Service-friendly
The heat exchanger is equipped with
large inspection doors that give
access for inspection and service. As
the heat exchanger has no rotating
part, it requires very little service.
De-icing
In situations where the outdoor air is
extremely cold there is a risk of the
exchanger icing up. De-icing can take
place either by regulating the by-pass
damper or by reducing the supply air
flow.
Drip tray
A drip tray is fitted beneath the heat
exchanger for collection of the water
that can condense in the extract air.
The drip tray drain outlet must be fit-
ted with a water trap that is designed
for the actual pressure difference.
Refer to the assembly instructions.
The counter flow heat exchanger is
fitted with a drip tray in both extract
and supply air sections.