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Construction And Features; Lossnay Core Construction And Technology - Mitsubishi Electric Lossnay series Technical Manual

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CHAPTER 2
Lossnay Construction and Technology

1. Construction and Features

Construction
Lossnay is constructed so that the exhaust air passage from the
indoor side to the outdoor side (RA → EA) and the ventilation air
passage from the outdoor side to the indoor side (OA → SA) cross.
The Lossnay Core is located at this crosspoint, and recovers the
heat by conduction through the separating medium between these
airflows. This enables the heat loss during exhaust to be greatly
reduced.
* RA : Return Air
EA : Exhaust Air
OA : Outdoor Air
SA : Supply Air
(1) Cooling and heating maintenance fees are reduced while ventilating.
(2) The system size of Heating/cooling system and cooling/heating load can be reduced.
(3) Dehumidifying during summer and humidifying during winter is possible.
(4) Comfortable ventilation is possible with the outdoor air can be adjusted to parallel the room temperature.
(5) Sound can be reduced.

2. Lossnay Core Construction and Technology

Simple Construction
The Lossnay core is a cross-air passage total energy recovery unit
constructed from specially treated membrane with a corrugated
structure.
The fresh air and exhaust air passages are totally separated
allowing the fresh air to be introduced without mixing with the
exhaust air.
Principle
The Lossnay Core uses the heat transfer properties and moisture
permeability of the treated membrane. Total heat (sensible heat
plus latent heat) is transferred from the stale exhaust air to the
ventilation air being introduced into the system when they pass
through the Lossnay.
Treated membrane
The cellulose membrane partition plates are treated with special
chemicals so that the Lossnay Core is an appropriate energy
recovery unit for the ventilator.
The membrane has many unique properties:
(1) Incombustible and strong.
(2) Has selective hydroscopicity and moisture permeability that permits the passage of only water vapor (including some
water-soluble gases).
(3) Has gas barrier properties that does not permit gases such as CO
space.
U-16
SA (Supply air diffuser)
Supply fan
RA (Return air)
Exhaust side filter
Note: The duct inlet and outlet are linear in the
actual product.
Main Features
SA
Supply Air
(Fresh heating/cooling air)
Partition
plate
(Treated
membrane)
Spacer plate
(Treated
membrane)
RA
Return Air
(Dirty heating/cooling air)
and other pollutants from entering the conditioned
2
Lossnay Core
EA (Exhaust air)
Exhaust fan
OA (Outdoor air)
Intake side filter
EA
Indoors
Outdoors
Exhaust Air
(Stale air)
OA
Outdoor air
(Fresh air)

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