The ROSEMEX Closed Type Cooling Tower (Closed Circuit Cooling Tower) is a high-efficiency heat rejection system designed for HVAC and industrial cooling applications where the process fluid must remain clean and isolated from the atmosphere. In this system, the process fluid flows inside a sealed coil while spray water and air flow externally over the coil surface to remove heat through evaporation. This design prevents contamination, scaling, and corrosion inside the system piping and equipment, significantly extending system life and reducing maintenance. ROSEMEX closed circuit cooling towers are manufactured with full steel structure, modular design, CTI-certified performance, low-noise operation, and factory pre-assembly, making them suitable for commercial buildings, data centers, chemical plants, power plants, and industrial processes. The catalogue shows RCD (double side air inlet) and RCS (single side air inlet) models with cooling capacities from 30 RT to 650 RT per module.
Special Features
Closed circuit design – no contamination of process fluid
CTI certified thermal performance (30 RT – 650 RT per module)
Modular construction for easy transport and installation
Double side air inlet (RCD) & single side air inlet (RCS) options
Low noise crossflow / counterflow design
Full steel construction (frame, casing, basin, structure)
Multiple coil material options: Galvanized steel / SS304 / SS316 / Copper
High-efficiency PVC or PP fills (up to 105°C)
Drift loss ≤ 0.001%
Intelligent spray water distribution system
Factory assembled and tested
Built-in steel base frame to reduce civil foundation cost
Multiple fan drive options: direct drive / belt / gearbox
Optional VFD control, PLC control & remote monitoring
Important Advantages
Clean operation: Process fluid never contacts air or spray water
Low maintenance: Less scaling, fouling, and corrosion
Energy efficient: Optimized heat transfer coil + high efficiency fans
Long service life: Heavy-duty steel construction & quality materials
Flexible installation: Modular structure with reduced site work
Wide applications: HVAC, industrial cooling, chillers, compressors, furnaces, data centers
Low noise design: Suitable for urban and commercial projects
Download the catalog to view specifications for other models.
| Parameter | Specification |
|---|---|
| Product Type | Closed Type / Closed Circuit Cooling Tower |
| Brand | ROSEMEX |
| Model Series | RCD (Double Side Air Inlet), RCS (Single Side Air Inlet) |
| Cooling Capacity Range | 30 RT – 650 RT (per single module, CTI certified) |
| Cooling Tower Type | Crossflow / Counterflow (model dependent) |
| Application | HVAC systems, Industrial cooling, Process cooling |
| Structure Material | Hot dip galvanized steel (G235 / Z700), SS304, SS316L optional |
| Casing Material | Galvanized steel / Stainless steel (optional) |
| Cold Water Basin | Sloped design with L-type drain outlet |
| Coil Material Options | Galvanized steel pipe, SS304, SS316, T2 copper pipe |
| Coil Water Flow Velocity | 0.6 – 2.0 m/s |
| Coil Water Side Resistance | ≤ 70 kPa |
| Pressure Test Rating | Steel: 2.5 MPa, Stainless steel: 2.0 MPa, Copper: 1.6 MPa |
| Fan Type | Aluminum alloy hollow airfoil blade |
| Fan Drive Options | Direct drive / Belt drive / Gearbox drive |
| Motor Type | TEFC / TEAO, IP55 protection, Class F insulation |
| Spray System | Spray pump + distribution pipes + ABS adjustable nozzles |
| Spray Pump Standard | JIS-C4210, IP55, Head: 3–8 m |
| Fill Material | PVC (60°C) or High temperature PP (105°C) |
| Drift Loss | ≤ 0.001% |
| Water Distribution | Self-balanced buffer chamber system |
| Base Frame | Built-in I-beam steel base frame |
| Noise Level | Low noise design, suitable for commercial projects |
| Optional Accessories | VFD motor, PLC control panel, remote monitoring, ladder & platform, basin heater, level sensor |
| Assembly | Factory assembled and tested |
| Certification | CTI, ISO9001, ISO14001, OHSAS18001 |
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