Daikin VRV III Manual page 36

ED34-862
Element (HEP element) Material
Material
The partition sheet in the heat exchanger element has been significantly upgraded. It is
approximately two-third thinner than the conventional type, resulting in a great
improvement in moisture absorption!
The material is flame-retardant for safety.
The fungi proof design also keeps the air clean.
Structure
The heat exchanger element is designed without moving parts for higher durability and
reliability.
The supply air passage and the exhaust air passage are arranged in right angle to
prevent the supply and exhaust air from getting mixed.
Features
High air shielding
Even in the conventional less humidity conditions, maintaining the features of the material that can get excellent
moisture permeability, we have achieved high air shielding, by special processing in the step of milling paper.
New ultra-thin film element
Conventional element
Moisture absorption is less effective due
to the thickness of the partition sheets. It
also limits the effective area that supply
and exhaust air can be exposed to.
Indoor Outdoor
SA
Outdoor air
RA
(fresh air)
(unclean
indoor air)
General Information
New ultra-thin film element
Due to the thinner film...
• Decreases the moisture resistance of the partition
sheets drastically.
• Realizes more space for extra layers in the element,
resulting in increased effective area that supply and
exhaust air can be exposed to.
Thickness of
Moisture absorption increased by approx. 10%!
the partition sheet
60
µm
Exhaust air
SA
RA
(unclean
indoor air)
Sheet structure
Indoor Outdoor
High-humidity air
Exhaust air
Outdoor air
(fresh air)
Supply air
Moisture exchange efficiency is greatly improved by using optimized
thinner films and moisture-absorption materials in the element.
Furthermore, miscellaneous gas barrier properties are maintained by
decreasing the porosity in the moisture-absorption materials.
: http://splitoff.ru/tehn-doc.html
Features
(HC0013)
Thickness of
the partition sheet
40
µm
Molecule of water
Miscellaneous gas
CO2 molecule, etc.
Exhaust air
Precise, thin-film
material
Low-humidity air
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