What is an Evaporative Condenser?
Designed for industrial refrigeration, industrial processes, and HVAC, HACST's evaporative condensers lower system condensing temperatures thereby reducing compressor horsepower, saving up to 15% energy compared to traditional air-cooled systems. This cost-effective cooling solution condenses refrigerant vapor in a coil that is continually sprayed with water. As the water evaporates, fans reject this heated vapor to the atmosphere.
Principle of Operation
The vapor to be condensed is circulated through a condensing coil, which is continually wetted on the outside by a recirculating water system. Air is pulled over the coil, causing a small portion of the recirculating water to evaporate. The evaporation removes heat from the vapor in the coil, causing it to condense.
| Manufacturer NH3 Ammonia freon evaporative condenser unit for blast freezer | |
| Coil material | Galvanized steel/stainless steel/red copper |
| Casing material | Al-Zn alloy coated steel sheet/stainless steel |
| Fan type | Axial flow type |
| Fill | 100% original PVC material |
| Drift eliminator | Special designed anti-corrosion PVC |
| Water flow loss | Less than 0.005% |
| Maintenance | with access door and ladder |
| Noise Control | Low speed fan, noise damping |
| Fan & water pump motor | Siemens, WEG |
| Customization | Yes |
HACST manufactures two types of evaporative condensers: combined flow and counterflow. 
Combined Flow Configuration
Combined flow is the use of both a condensing coil and fill surface for heat transfer in an evaporative condenser. The addition of fill surface to the traditional evaporative condenser design reduces evaporation in the coil section, reducing the potential for scaling and fouling. HACST's combined flow evaporative condensers utilize parallel flow of air and spray water over the coil, and crossflow air/water flow through the fill surface. In parallel flow, air and water flow over the coil in the same direction. In the fill section of HACST's combined flow evaporative condensers, air and water interact in a crossflow configuration: water flows vertically down the fill as air flows horizontally across it.
Combined Flow Evaporative Condenser Advantages :
1 Excellent Heat Exchange Performance
Parallel air and water path as well as the combination of coils and PVC fill, this effectively avoid the dry spot and scale formation, and improve the heat exchange performance.
2 Convenient Maintenance
Huge maintenance space makes it convenient to inspect the product. Technicians can enter the cooling tower during operation time.
3 Convenient Transportation and Installation
The Evaporative condenser is designed to be standard upper body part and bottom body part, making it is able to be shipped separately and saves transportation and installation cost.
4 Slope Water Basin Design
Suspended PVC fill and sloped water basin floor toward the drain facilitate cleaning.
Counterflow Configuration
In a counterflow evaporative condenser design, the flow of the air is in the opposite direction of the spray water. In HACST's counterflow evaporative condensers, air travels vertically up through the unit while the spray water travels vertically down over the coil. The flow of air through most factory assembled evaporative condensers is provided by one or more mechanically driven fans.
1 No infill designed, more compact structure, lower profile, less installation area required, and easy for transport and installation.
2 Suitable to severe environment as its structure muchmore close, which could prevent from sand and dust.
3 Suitable to high temperature fluid, because hot spraying water will not distort PVC fill as no PVC fill designed.
4 Freezing resistance,because there is no PVC fill to slow down spraying water flow speed.
Spare parts for evaporative condenser
A. Top famous brand, special designed for cooling tower.
C. Axial fan mounted on top of cooling tower. Removable protective nets set in the side of the wind turbine.
D. Motor is adopted with outdoor and waterproof, mechanical seal, protection IP55, insulation class F;
E. Fan characteristic parameters meet design conditions, all blades with high quality process and reliable, smooth surface, each section transition uniform, no cracks, nicks, burrs; The gap of blade between the evaporative condenser inner shell are same, and fans get through dynamic and static balance test and torque balance test. Fans rigorous static and dynamic balance need to be corrected before delivery, no chattering.
A. Spray Pump: The spraying pump is special designed for cooling tower, which with high flow, low head, high efficiency, low noise, low power and energy saving advance. Special designed for close cooling tower. Pump motor with protection class IP55, insulation class F.
B. Spraying Water Pipe: made of PVC material, with flowing advantages: easy cold, bear high pressure, anti-corrosion, anti-collision, and water resistant. All spraying manifolds are adopted removable type, more easy to replace and clean it.
Production of evaporative condenser
Tube bending → Coil automatic welding → Coil assembly → Cutting plate → Plate assembly → bottom parts assembly → installation coil → top parts assembly → complete unit → loading to container → Running in customer plant
Evaporative Condenser is widely used in energy chemical industry, Pharmaceuticals coal, electricity, industrial refrigeration, beer, beverage, food processing, the cold storage, the building air conditioning refrigeration, etc
The food industry
Poultry Slaughtering Plant
Multi-purpose cold Storage
Beer and beverage industry
Industrial ice/Skating Rink
Ice cream factory
Fish processing industry
Chemical medicine
Inter-cooling of methanol/methanol synthetic ammonia compressor
Syngas cooling condensation
Methanol distillation process cooling condensation
Gas cooling of natural gas or coke gas exchange process
Purification process as weoo as cooling condensation
Steam condensation of turbine
Ethyl acetate condensation
