Passive Displacement Ventilation (PDV)
-
Passive Displacement Ventilation (PDV)
Features
Passive Displacement Ventilation (PDV) uses chilled-water cooling coil to create the air circulation through natural convection process, without mechanical fan. This unconventional method introduces cool air steadily into room floor level and remove room heat from warm air at ceiling level.
With Daikin PDV system, enjoy benefits such as energy and cost savings while achieving cool, comfortable room conditions.
PDV Airflow Simulation Example where cool air is represented in blue and is discharged through the PDV unit, and the warm air in a premise in red.
Benefits
%20features%20(horizontal%20edited).PNG)
-
Air Distribution technology introduces cool air into a low-level zone at low velocity, resulting in less distraught.
- Opportunities for energy saving as no fan is required. Suitable for green building systems.
- Improved room comfort without any mechanical sound from a fan motor, blower and bearing.
- PDV units are easily installed due to its compact size and design, along with fewer diffusers and less ductwork required.
- PDV units’ temperatures can be zone controlled.
Applications
-
Office Buildings
-
Hotels
-
Shopping Malls
-
Public Buildings
Specifications
- DPSC (400 Coil Height & 600 Coil Height)
-
400 Coil Height
Model DPSC-0409 DPSC-0412 DPSC-0415 DPSC-0418 DPSC-0421 Total Cooling Capacity* kW 0.87 1.19 1.52 1.73 2.06 Coil Dimension (with Drain Pan) Height mm 471 471 471 471 471 Width mm 1040 1340 1640 1940 2240 Depth mm 210 210 210 210 210 Coil No./Row/Fin Per Inch 1 / 2 / 10 Weight kg 20.7 24.9 28.4 31.1 34.6 Water Flow Rate L/s 0.042 0.057 0.073 0.083 0.099 Fluid Pressure Drop kPa 0.32 0.56 0.86 1.14 1.55 Pipe Connection^ Supply mm ɸ 12.7 (Brass Connection ɸ 21.7 OD c/w BSPT Male Threaded) Return mm ɸ 12.7 (Brass Connection ɸ 21.7 OD c/w BSPT Male Threaded) Condensate Drain Size mm ɸ 16.5 600 Coil Height
Model DPSC-0609 DPSC-0612 DPSC-0615 DPSC-0618 DPSC-0621 Total Cooling Capacity* kW 1.35 1.73 2.22 2.60 3.09 Coil Dimension (with Drain Pan) Height mm 624 624 624 624 624 Width mm 1040 1340 1640 1940 2240 Depth mm 210 210 210 210 210 Coil No./Row/Fin Per Inch 1 / 2 / 10 Weight kg 26.5 32.2 37.0 40.5 45.1 Water Flow Rate L/s 0.065 0.083 0.106 0.124 0.148 Fluid Pressure Drop kPa 0.42 0.67 1.05 1.43 1.97 Pipe Connection^ Supply mm ɸ 12.7 (Brass Connection ɸ 21.7 OD c/w BSPT Male Threaded) Return mm ɸ 12.7 (Brass Connection ɸ 21.7 OD c/w BSPT Male Threaded) Condensate Drain Size mm ɸ 16.5 *Nominal conditions:
a. Chilled Water Supply: 7.0ºC, Chilled Water Return:12.0ºC.
b. Room Temperature: 24.0ºCDB / 60%RH.
c. Effective Shaft Duct Height at 2.5m.
^Piping connection to be specified by customer, either "left" or "right" viewing from return air side
- DPDC (400 Coil Height)
-
Model DPDC-0409 DPDC-0412 DPDC-0415 DPDC-0418 DPDC-0421 Total Cooling Capacity* kW 0.94 1.24 1.56 1.86 2.18 Coil Dimension (with Drain Pan) Height mm 425.6 425.6 425.6 425.6 425.6 Width mm 1030 1330 1630 1930 2230 Depth mm 346 346 346 346 346 Coil No./Row/Fin Per Inch 2 / 3 / 10 Weight kg 43.1 52.1 59.6 65.5 73.1 Water Flow Rate L/s 0.045 0.060 0.075 0.089 0.104 Fluid Pressure Drop kPa 0.32 0.55 0.84 1.18 1.59 Pipe Connection^ Supply mm ɸ 12.7 (Brass Connection ɸ 21.7 OD c/w BSPT Male Threaded) Return mm ɸ 12.7 (Brass Connection ɸ 21.7 OD c/w BSPT Male Threaded) Condensate Drain Size mm ɸ 16.5 *Nominal conditions:
a. Chilled Water Supply: 7.0ºC, Chilled Water Return:12.0ºC.
b. Room Temperature: 24.0ºCDB / 60%RH.
c. Effective Shaft Duct Height at 2.5m.
^Piping connection to be specified by customer, either "left" or "right" viewing from return air side