Mitsubishi Electric Lossnay LGH-F1200RX5-E, Technical Manual

Page: 89 / 105

U-80
CHAPTER 8
•
Filters
When the performance of each machine is known, the indoor dust concentration C
i
may be obtained with the filter performance,
η
o
and
η
i
having been set to specific values as per manufacturer's data. The following formula is used:
C
i
=
G + C
o
Q
o
(1 –
η
o
)
Q
o
+ Q
i
η
i
Also, with the value of Ci and
η
o
known, indoor unit of air conditioner efficiency can be found using:
η
i
=
G + C
o
Q
o
(1 – η
o
) – C
i
Q
o
× 100
C
i
Q
i
5. Calculating Dust Concentration Levels
An air conditioning system using Lossnay units is shown below. Dust concentration levels can be easily determined using this
diagram.
Dust Concentration Study Diagram
Q
o
: Outdoor air intake amount (CFM (m
3
/h))
Q
i
: Indoor unit of air conditioner air volume
(Total air volume of indoor unit) (CFM (m
3
/h))
η
o
: Filtering efficiency of humidifier with high efficiency filter %
(colorimetric method)
η
i
: Efficiency of the filter for the indoor unit of air conditioner %
(colorimetric method)
C
o
: Outdoor air dust concentration (Ib/ft
3
(mg/m
3
))
C
i
: Indoor dust concentration (Ib/ft 3 (mg/m 3 ))
G : Amount of dust generated indoors (Ib/h (mg/h))
Indoor unit of air conditioner
Lossnay unit
High-efficiency filter η o
Indoor unit filter
η
i