Features Of System; High Energy Saving - Fujitsu AIRSTAGE J-II Design & Technical Manual

1.

FEATURES OF SYSTEM

1-1.

HIGH ENERGY SAVING

EFFICIENCY IN ACTUAL OPERATION
„ „
The building load is the range of almost 40 % to 80%. Therefore, most air conditioners do not
operate at maximum load, but operate at low to medium loads. Especially, for multi system,
operation performance at partial load is important because all the air conditioners do not
always operate all the time. Aiming at energy saving performance matched to actual operation,
Fujitsu General has developed a high intermediate performance air conditioner corresponding
not only to the rated performance at 100% load, but also to low to medium load
High EER / COP
4.29
3.72
3.60
4 HP 5 HP
: EER : COP
4.20
3.95
3.45
6 HP
- (01 - 01) -
Load curve (a typical office building)
100
80
60
40
20
0
0 3 6 9
High part load performance
66
%
50%
UP 5.73
100%
3.45
EER
Cooling part load
Conditions : Connected indoor units: AUXD30LALH+AUXD24LALH
Cooling : indoor temp. of 27°CDB/19°CWB. outdoor temp. of35°CDB/24°CWB
Heating : indoor temp. of 20°CDB/15°CWB, outdoor temp. of7°CDB/6°CWB
12 15 18 21
Time (h)
(6HP class)
46
%
50%
UP
5.75
100%
3.95
COP
Heating part load
24