Views: 0 Author: Site Editor Publish Time: 2026-06-16 Origin: Site
Core Design Features
U-shaped fin coil: 3-sided air intake, compact footprint to fit limited internal cabinet space of large shopping mall AHU.
Dry expansion type: Direct expansion DX evaporator, refrigerant feeds via thermostatic expansion valve; no flooded liquid pool inside shell, lower refrigerant charge vs flooded evaporator.
Construction: Copper tubes + hydrophilic coated aluminum fins (10~12 FPI for high mall humidity), multi-circuit piping for even refrigerant distribution.
Key Benefits for Shopping Mall Application
High sensible+latent cooling: Shopping malls have high occupancy, large fresh air load & high indoor humidity; 3-face airflow improves dehumidification to maintain 50~55% RH.
Space optimization: U layout occupies 15~20% less cabinet depth than conventional A-coil, convenient for retrofitting old mall air handling units without cabinet replacement.
Uniform airflow & less uneven frosting: Consistent air velocity across entire coil surface, avoids local overcooling and ice blockage under frequent partial-load operation (mall load fluctuates between peak shopping & off-peak hours).
Easy condensate draining: U structure slopes naturally for smooth condensate outflow, prevents ponding and mold growth inside AHU (critical for mall indoor air quality).
Energy saving: Higher overall heat transfer coefficient reduces fan static pressure drop, cuts long-term AHU fan power consumption for 24h daily mall operation.
Typical Working Condition
Inlet air: 26~32°C DB / 60~75% RH (hot humid fresh air + return mixed air in shopping center)
Refrigerant: R410A / R134a common
Capacity range per single AHU: 10RT ~ 120RT for large mall zone air handlers
Application Scenarios in Shopping Mall
Public lobby, corridor central air AHU
Retail store independent air handling cabinet
Cinema, supermarket large fresh air processing unit
Basement & underground commercial space dehumidifying air handler
