2 Features and benefits
TCGB0070 rev.3 - 04/2012
33
2
Outdoor unit heat exchanger
High-efficiency heat exchanger
• Compact design and high-efficiency by arranging narrow heat exchanger tubes in 3 rows. (befo
-
re Ø9.53mm, now Ø7mm).
• Newly-developed high-efficiency heat transfer fin. The ventilating resistance is reduced by 20% from previous mo
-
dels.
• Heat exchanger configuration aiming at fluid loss reduction.
High-efficiency heat transfer fin
Improved heat transfer capacity
Newly-developped fin
(Ø7 Heat transfer tube)
Current fin
(Ø9.53 Heat transfer tube)
Fin cross-sectional
surface
(slit alignment)
Fin cross-sectio-
nal surface (slit
alignment)
Air ventilation resistance
Newly-developed fin
Face wind velocity
Frost formation amount
Current fin
Current fin
Air flow
Air flow
Approx. 20%
Reduction
Approx. 10%
Increase
Heat trans-
fer ratio
Newly-developed fin
Side flow technology
Energy-saving and uniform air velocity distribution by side flow technology.
Air
inlet
Air speed (m/s)
Air
outlet
Improved performance by subcooling circuit
The system performance is improved by enlarged heat transfer area of outdoor unit and subcooler heat exchanger.
Rear side
Front side
Increase of enthalpy
due to the use of the
sub-cooling circuit.
Sub-cooler
Air
inlet
Air
outlet
