This document provides a comprehensive guide to Colderman CCT Series Cooling Towers. It combines detailed technical specifications with an in-depth understanding of how cooling towers work, including their types, applications, and operational principles.
Cooling Tower Working Principle
The diagram below illustrates the basic working principle of a counter-flow cooling tower. Hot process water enters from the top and is distributed over fill media via spray nozzles. Simultaneously, ambient dry air enters from the bottom and flows upward against the falling water. Through evaporative cooling, part of the water evaporates and cools the remaining liquid, which collects in the basin below. Warm, moist air exits from the top via the fan.
Colderman CCT Series Cooling Towers
Colderman CCT Series Cooling Towers offer high-efficiency, durable and scalable cooling solutions for industrial processes and HVAC systems. With capacities ranging from 45 to 270 tons, the CCT series ensures optimal thermal performance with minimal maintenance.
Why Choose CCT Series?
Technical Specifications – CCT Model Table
| Model | Cooling Capacity | Water Flow Rate | Fan System |
| CCT‑45 | 45 Ton | 135 gpm | 1× TEFC motor fan |
| CCT‑85 | 85 Ton | 255 gpm | 1× TEFC motor fan |
| CCT‑105 | 105 Ton | 315 gpm | 1× TEFC motor fan |
| CCT‑135 | 135 Ton | 405 gpm | 1× TEFC motor fan |
| CCT‑170 | 170 Ton | 510 gpm | 2× TEFC motor fans |
| CCT‑210 | 210 Ton | 630 gpm | 2× TEFC motor fans |
| CCT‑270 | 270 Ton | 810 gpm | 2× 7.5 HP TEFC motors |
Technical Components
- Body: UV-protected FRP (fiberglass)
- Fill Material: PVC honeycomb or splash fill
- Fan: Fiberglass blades, low noise
- Motor: TEFC, direct-drive
- Water Distribution: Nozzle spray system
- Drift Eliminator: <0.01% water loss
- Pumps: High-efficiency centrifugal type
- Optional: Level control, VFD, heater, filtration system
Application Areas
- Concrete batching plants (chiller assisted)
- Industrial process cooling
- HVAC in food, beverage, pharma, and chemical industries
- Power plants and large commercial buildings
Advantages of CCT Series
| Advantage | Description |
| High Efficiency | Counter-flow design provides more efficient cooling |
| Long Life | Stainless serpentine, fiberglass body, minimal maintenance |
| Modular Design | Multiple CCT units enable project-specific scalability |
| Energy Saving | Smart fan control and low energy consumption |
Performance Values
- Inlet Water Temperature: 35°C (95°F)
- Outlet Water Temperature: 29°C (85°F)
- Ambient Wet Bulb Temperature: 26°C (78°F)
- Evaporation Loss: ~1%
- Drift Loss: <0.01%
Understanding Cooling Towers – A Comprehensive Guide
1. What is a Cooling Tower?
A cooling tower is a heat rejection device that expels waste heat into the atmosphere through the cooling of water. Used in HVAC systems, industrial processes, and power plants, cooling towers play a crucial role in maintaining optimal operational temperatures.
2. How Does a Cooling Tower Work?
Cooling towers operate on the principle of evaporative cooling. Warm process water is distributed over fill media where it comes into contact with ambient air. As air is drawn upward (typically via fan), a portion of the water evaporates, absorbing heat and reducing the temperature of the remaining water. This cooled water collects in a basin and is returned to the system.
Key components include:
- Fill Material: Enhances surface area for heat transfer.
- Drift Eliminator: Prevents water droplets from escaping.
- Fan System: Forces air flow for heat exchange.
- Spray Nozzles: Distribute water evenly.
- Collection Basin: Collects the cooled water.
3. Types of Cooling Towers
- Open-Circuit (Wet): Exposes water directly to air, most common and efficient.
- Closed-Circuit (Dry or Fluid Cooler): Process fluid flows through a coil, never exposed to air.
- Hybrid: Combines both, designed to reduce plume and water usage.
4. Flow Configurations
- Counter-Flow: Air flows upward against the downward water flow. Compact and efficient.
- Cross-Flow: Air enters from sides and crosses the downward water path. Easier to maintain.
- Parallel-Flow: Less common, air and water flow in the same direction.
5. Water Balance and Losses
Cooling towers consume water through evaporation (~1%), drift (<0.01%), and blowdown (to control mineral concentration). Maintaining proper water chemistry is vital to prevent scaling, corrosion, and microbial growth.
6. Operation and Maintenance
- Regular cleaning of fill and basin
- Monitoring water quality and biocide dosing
- Drift eliminator inspection
- Fan motor and nozzle maintenance
- Seasonal shutdown and freeze protection
7. Safety Considerations
Proper design and operation minimize the risk of Legionella bacteria. Compliance with ASHRAE Standard 188 and local health codes is essential. Drift eliminators and water treatment help mitigate risk.
8. Applications of Cooling Towers
- HVAC systems in commercial and residential buildings
- Industrial manufacturing and process cooling
- Power plants and chemical processing units
- Food, beverage, and pharmaceutical facilities
Cooling towers are indispensable components in thermal management across many sectors. Understanding their operation, design, and maintenance helps ensure reliability, efficiency, and compliance with environmental and safety standards.
