ZHX Combined Flow Evaporative Condenser – Enhanced Efficiency with Fill-Assisted Heat Transfer
Cooling Coil
Drift Eliminator
PVC Fill
Fan
Spray Nozzle
V-Type Adiabatic Dry Cooler
Counterflow Open Cooling Tower – Compact & High-Performance Cooling Solution
Parameter
Range / Value
Cooling Capacity
100 – 5,000 kW
Water Flow Rate
50 – 2,500 m³/h
Fan Type
High static axial, optionally VFD-controlled
Casing Material
Galvanized Steel / FRP / Stainless Steel
Fill Media
High-efficiency film or splash fill
Drift Loss
≤ 0.001 % of circulating water
Ambient Temp Range
–20 °C to +55 °C
Footprint
Compact, vertical design
Installation
Modular assembly, easy integration
OPEN-CIRCUIT WATER COOLING
Reliable cooling-tower performance for industrial water loops
HACST open cooling towers reject heat directly from circulating water through the combined action of air and evaporative cooling. The selection is matched to water duty, climate, operating profile and site service requirements.
Direct water coolingAccessible service layoutIndustrial modular designWater management ready
PROJECT-READY CONFIGURATION
Specified around operating conditions and site requirements
Cooling capacity, approach temperature, water quality, available footprint, noise limits and service access are assessed together to create a dependable cooling-tower solution.
Application-led selection: the configuration begins with the actual operating duty and project objective.
Practical integration: installation footprint, access, controls and service requirements are considered early.
Long-term operation: material, water, airflow and maintenance considerations are reviewed for the operating environment.
HACST equipment engineered for industrial cooling applications.TECHNICAL DETAILS
Configuration and performance considerations
The Counterflow Open Cooling Tower by HACST Cooling provides powerful, space-efficient evaporative cooling tailored to demanding industrial and commercial environments. Featuring a vertically opposing airflow and water flow design, it maximizes thermal performance while occupying minimal footprint—ideal for tight spaces or high-load applications.
Key Features & Advantages
Superior Thermal Efficiency – Pressurized spray nozzles and counter-directional airflow enable enhanced heat transfer via uniform water distribution across the fill .
Compact Footprint – Vertical design saves ground space, perfect for urban sites or multi-tower installations.
Reduced Freezing Risk – Spray water breakup and fill configuration improve freeze resistance in cold climates .
Lower Drift and Sunlight Exposure – Enclosed design limits water drift and protects fill and distribution systems from direct sunlight .
Ideal for High-Load Environments – Perfect for data centers, power plants, pharmaceuticals, and district cooling where efficiency per footprint matters most.
Working Principle
Hot process water is sprayed via high-pressure nozzles downward through the fill media. Meanwhile, air is drawn upward in direct opposition to the water stream. This counterflow arrangement enhances heat exchange efficiency, with cooled water collected at the basin for recirculation.
counter-flow-open-cooling-tower-working-principle
Applications
Suited for:
Data Centers — High thermal loads in compact space
Power & District Cooling — Efficiency-critical environments
Pharmaceutical & Clean Process Industries — Sensitive applications requiring precise temperature control
Urban Installations — Where space optimization is vital
Comparison: Counterflow vs. Crossflow
Feature
Counterflow Open Cooling Tower
Crossflow Open Cooling Tower
Thermal Efficiency
Very High — optimized spray and airflow pattern
Moderate — gravity distribution limits performance
Footprint
Compact, vertical layout
Larger plan area
Maintenance & Access
Limited internal access, may require shutdown
Easy maintenance, often accessible during operation
Pump Energy Requirement
Higher — due to pressurized nozzle system
Lower — gravity-fed water distribution
Noise & Drift
Moderate — enclosed design suppresses drift
Lower noise, easier access
Climate Suitability
Best in warm/hot climates
Better freeze resistance
Maintenance & Operation Tips
Regular Inspection of spray nozzles and distribution trays—enclosed design may require periodic shutdown for cleaning .
Water Treatment to prevent scaling and biofouling; consider microsand filtration to boost cooling efficiency by up to 18% and save energy .
Fan & Motor Maintenance—ensure proper lubrication and alignment for sustained performance .
Drift Eliminator Checks—inspect semi-annually for integrity to curb water loss and health risks .
Legionella Prevention—regular monitoring and biocide application are vital for safe operation .
Why Choose HACST Cooling
15+ Years of Technical Excellence — Delivering industrial-grade cooling solutions worldwide
Certified Quality — Meeting CTI, ISO9001, CE standards
Global Reach — Projects across 30+ countries
Full Lifecycle Support — From initial design, commissioning to after-sales service
Get Your Tailored Solution
📩 Contact us with your cooling needs to receive a customized proposal. Email: hengancooling@gmail.com
Modular equipment options for industrial installation.
TYPICAL APPLICATIONS
Where this solution adds value
Each project is assessed around its operating conditions, environmental requirements and service expectations.
Industrial process coolingHVAC condenser-water loopsPower and utility systemsManufacturing facilities
START WITH THE RIGHT DATA
Four inputs for a more accurate equipment selection
Define water-side dutyShare flow rate, temperatures, capacity and operating schedule.
Review water qualityConfirm treatment practices, make-up water and blowdown requirements.
Assess the installationProvide footprint, airflow, noise and maintenance-access conditions.
Set the operating strategySpecify fan control and building or process automation interfaces.
ENGINEERING SUPPORT
Need help with your equipment selection?
Send your operating data and project requirements. HACST will help define a practical cooling solution.
Explore HACST's high-performance cooling solutions. Whether you need cooling towers, evaporative condensers, or air coolers, our solutions are built to meet your industrial and HVAC needs. Get in touch with our experts for a custom quote!
