Construction And Features Of Lossnay; Construction And Principle Of Core - Mitsubishi Electric Lossnay LGH-100RX3-CAN Technical Manual

CHAPTER 2 Lossnay Construction and Principle

1. Construction and Features of Lossnay

Lossnay construction
The Lossnay is constructed so that the exhaust air passage from
the indoor side to the outdoor side (RA → EA) and the fresh air
passage from the outdoor side to the indoor side (OA → SA)
cross. The Lossnay heat recovery unit (Lossnay Core) is installed
at this cross point, 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 saved while ventilating.
(2) The capacity and performance of the air conditioner can be reduced.
(3) Dehumidifying during summer, and humidifying during winter is possible.
(4) Comfortable ventilation is possible, (the outdoor air being adjusted to the room temperature.)
(5) Effective sound-proofing.

2. Construction and Principle of Core

Simple construction
The Lossnay Core is a cross-flow total heat recovery unit
constructed of plates and fins made of treated paper.
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 paper. Total heat (sensible heat plus
latent heat) is transferred from the stale exhaust air to the fresh air
being introduced into the system when they pass through the
Lossnay. Try this simple experiment. Roll a piece of paper into a
tube and blow through it. Your hand holding the paper will
immediately feel warm. If cold air is blown through the tube, your
hand will immediately feel cool. Lossnay is a total heat exchanger
that utilizes these special properties of paper.
Treated paper
The paper partition plates are treated with special chemicals so that the Lossnay Core is an appropriate heat recovery unit for
the ventilator. This paper differs from ordinary paper, and has the following unique properties.
(1) The paper is incombustible and is strong.
(2) The paper has selective hydroscopicity and moisture permeability that permits the passage of water vapor only (including
some water-soluble gases).
(3) The paper has gas barrier properties that does not pass gases such as CO
16
Note: The dust inlet and outlet are linear in the
Main Features of Lossnay
SA
Supply air diffuser
(Fresh cold or warm air)
Spacer plate
(Treated paper)
RA
Return air
(Stale cold or warm air)
Lossnay Core
SA
(Supply air diffuser)
Supply fan
RA
(Return air)
Exhaust side filter
actual product.
Indoors
Partition
plate
(Treated
paper)
.
2
EA
(Exhaust air)
Exhaust fan
OA
(Outdoor air)
Intake side filter
EA
Outdoors Exhaust air
(Stale air)
OA
Outdoor air
(Fresh air)