Mitsubishi Electric Lossnay LGH-15RX3 Technical Manual page 78

2.3 Proposed details
A) General floors
An independent dispersed-type control system incorporating an air cooling heat pump chiller and cassette-type fan coil
unit for cooling and heating is used. This can cater for load fluctuations resulting from increases in office automation
systems or changes in partitions hence requiting independent control of each module zone (approx. 70 m
Processing unit is used for ventilation and humidification, and construction and space is reduced by using a system ceiling
and ceiling chamber method. (Table 1 B system)
B) Special floors
City Multi and Outdoor-Air Processing unit are applied as package-type independent units, located so as to conform with
lighting fixtures, air outlets and suction inlets in rooms where the interior is important while ensuring the required air-
conditioning quality. (Table 1 D system)
System using fan coil unit (general floors)
2.4 Effect
(1) Individual control is possible
Individually dispersed air conditioning that creates a
comfortable environment according to general floor and
special floor needs is realised.
(2) Energy conservation
Wasted air conditioning energy is eliminated allowing great
reduction in operation costs.
(3) Space saving
The Outdoor-Air Processing unit, fan coil unit and building air
conditioner are all ceiling embedded-types, so the back of the
ceiling is used effectively, saving machine room space and
floor space.
(4) Construction saving
The ventilation functions have been unitised with the Outdoor-
Air Processing unit, and all air conditioner units can be
unitised allowing construction to be reduced.
(5) Simple architecture layout
Machine room space and main duct space for air conditioning
are not required, so limits in the layout are reduced.
Chilling unit
<Sunny Pack>
CHAPTER 6 G Examples of Lossnay Applications
General floor air conditioning facilities
Heat source
equipment
Air
Conditioner
Ratio with convertional air conditioning system as 100
Facility costs
Compaarison with conventional air conditioning
system
2
). Outdoor-Air
: Air intake
: Supply diffuser
FCU : Fan coil unit
GU : Outdoor-Air processing unit
New air conditioning Conversional air
system conditioning system
Air-cooling heat Air-cooling heat
pump chiller pump chiller
Outdoor air treatment Air handling unit
unit Outdoor-Air (1 unit on each floor)
Processing unit
(8 units on each floor) ⇐ Floor-type fan coil unit
Ceiling embedded-
type fan coil unit
Operation costs
Air conditioning
(including main-
power
tenance rate)
Installation space
(including roof-top
installation space)
75