Open Space Cooler

(Evaporative Cooler)

The most effective and cost-efficient way to cool down any factory or industrial building. Our Open Space Cooler brand evaporative cooler series harnesses evaporative cooling technology to reduce air temperature and supply cool air.

Open Space Cooler (Evaporative Cooler)

What is EVAP (Open Space Cooler)? 
And How Does It Work?

An Evaporative Cooler or Open Space Cooler or, also known EVAP, is a device that cools air through the evaporation of water. It works by drawing warm air through water-soaked pads, causing the water to evaporate and cool the air. This cooled air is then circulated throughout a space, lowering the temperature. 

EVAP are energy-efficient and environmentally friendly, making them a popular choice in dry climates where humidity is low. Unlike traditional air conditioners, they use much less electricity and don’t rely on chemical refrigerants.

Cools down factory workers effectively

Evaporative Cooler (EVAP) or Open Space Cooler is an energy-efficient and eco-friendly solution to maintaining a comfortable temperature in industrial spaces. By reducing heat through natural evaporation, it helps create a more pleasant working environment, significantly lowering stress and combating fatigue. This not only boosts productivity and focus but also contributes to employees’ overall physical and mental well-being. 

A cooler workspace encourages job satisfaction, which in turn reduces turnover rates and fosters greater loyalty among staff. By investing in employee comfort with an evaporative cooling system, businesses can improve morale, retain talent, and create a healthier, more efficient workforce in the long run.

Delivers a breathe of fresh cool air

Supply air performance of the Open Space Cooling system depends on the outside atmospheric conditions. It is able to take the outside air and reduce the temperature down by a potential 10˚ degrees Celsius depending on the outside relative humidity. As a general rule, the dryer and hotter the outside conditions, the better the cooling performance.

In typical South East Asia conditions, the supply air temperature can range from 21˚ to 30˚ degrees Celsius.

Evaporative Cooler Built-In Features

UV Resistant

UV-resistant all-weather new plastic molded casing ensures a long service life of Evaporative Cooler.

Multi Fan Blades

Multi-bladed fan design has more stability and lowers noise level.

Leakage Free

One-piece ABS plastic molded step water basin ensures total drainage and leak free.

Evaporative Cooler 
Control Features

Auto-Clean

Automatically cleans itself every 4 hours interval.

Cooling Pad Drying

Dries itself for 5 minutes after every operation.

On/Off Clean

Automatically cleans itself prior & after every operation.

Pre-Cooling

Prevent unwanted odor by wetting the pads before operate.

Program Start/Stop

Cooler can be set to start/stop automatically at pre-set time.

Water Shortage

Pump will automatically stop if water is lacking in the water basin.

Different Size, Different Usage

Model: OS-18 Evaporative Cooler

A smaller Evaporative Coolers are generally more affordable version while maintaining energy efficient performance in cooling down the area.
Top Discharge, Side Discharge, Bottom Discharge
Nominal Airflow: 18,000 m3/h
Motor: 1.1 kW
Electrical Power Supply: 50Hz/380V
Dual Speed - 1440/930 rpm
Cooling Pad Size:  620x825x100 mm

Model: OS-30 Evaporative Cooler

If you need the most efficient Cooler at maximum performance for your building. OS Series are the answer for you.
Top Discharge, Side Discharge, Bottom Discharge
Nominal Airflow: 30,000 m3/h
Motor: 3.0 kW
Electrical Power Supply: 50Hz/380V
Dual Speed - 1440/930 rpm
Cooling Pad Size: 970x886x100 mm

Evaporative Cooler System Control

Adaptive Air Temperature Control

Designed to reduce your operating cost, the cooler can automatically run at lower speeds once a desired temperature is reached in the ambient air. Temperature Adaptive.

Set a Limit to Humidity

This is done by cutting off the pump operation once the humidity has risen above the set limit. The pump will re-start after the humidity falls back to the set limit.

One Controller Controls all Units

Both Evaporative Cooler Series OS 18 and  OS 30 can be managed by a single Wall Controller for up to 40 units of both series combined. This is made possible with the use of a hub connector that links up to 4 coolers.

We only use Munters cooling pad

The Open Space Cooler is equipped with the Munters CELdek cooling pads as standard. Munters CELdek pad has the following advantages :

High evaporation efficiency
Superb wetting properties
Low pressure drop when wet, leading to low operating costs
No water carry-over
Self cleaning
Strong and self supporting
Long life time
Munters CELdek is a product of Munters Europe AB, Sweden.

Feels 12°C Cooler Than Outside

Creates a cooling sensation as low as ΔTPTD-12°C depending on atmospheric conditions.

*ΔTPTD is perceived temperature drop

More Cost Efficient Than Traditional Air Conditioning

Open Space Cooling
Air Conditioning
Installation Cost
50%
100%
Operation Cost
10%
100%

Custom Air Duct Systems for your Evaporative Cooler

We design and build high-quality insulated air duct systems that transport the cool air produced by the Evaporative Coolers and deliver it to the fixed worker locations. 

When you purchase a Waterline brand Evaporative Cooler, you can be confident that we will also provide the design, installation, and maintenance of a reliable and effective industrial cooling system.

See PIP Air Ducts

Sample Projects

Different Mounting Types

The Evaporative Cooler offers flexible installation options that can be customized to each customer's site requirements and operational needs without disrupting existing processes.

Roof Mount
Roof-mounted installation reduces ductwork expenses for expansive manufacturing facilities with large floor areas.
Bottom and Side Discharge
Floor Mount
Floor-based positioning removes reliance on the building's structural framework for support.
Top and Side Discharge
Tower Mount
Tower-supported mounting provides independence from the facility's existing structural elements.
Bottom , Top and Side Discharge
Wall Mount
Wall-mounted configuration represents the preferred installation method when adequate space is available.
Bottom , Top and Side Discharge

Advantages of Waterline Cooler vs. Other Brands

Reasons why you should only choose Waterline brand coolers
Energy Saving
All Evaporative Coolers are Energy Saving options when compared to Air Conditioning.
Superior Quality Munters Brand Cooling Pad
Waterline Brand cooler uses Swedish Munters AB Cooling Pad which is much more effective and long-lasting than standard Cooling Pads.
Reliable Brand Name Valves
Waterline Brand cooler uses industrial-grade valves such as Parker or Bonavalve and does not use household grade types.
System Compatibility with Air Filtration Unit for Cleaner Air
Waterline Brand coolers can be combined with an external air filtration unit that supplies clean air according to a variety of primary, secondary, and HEPA filters.
Guaranteed After Sales Service
When you invest in a Waterline cooling system, you have access to a professional and prompt after-sales service program for many years to come.
Evaporative Cooler - OS30
OS 30-B
Bottom Discharge
OS 30-S
Side Discharge
OS 30-T
Top Discharge
Dimension

Cooler Overall Dimensions : 1350 x 1350 x 1310 mm
Outlet Air Duct Size : 750 x 750 mm
Net Weight : 125 kg
Operating Weight : 180 kg

Performance

Nominal Airflow : 30,000 m3/h
Airflow@80Pa : 22,000 m3/h
Rated Current : 1st Speed – 7.1 A, 2nd Speed – 3.5 A Motor : 3.0 kW
Electrical Power Supply : 50Hz / 380V
Motor Design : 3-phase / 50Hz / 380V
Noise : ≤ 80

Operation Controls

Fan Speed : Dual Speed – 1440 / 930 rpm
Wall Controller : Multi-Function LCD
Water Capacity (l ) : 55
Water Consumption : 50@ 35˚C Dry Bulb, 28˚C Wet Bulb

Dimension

Cooler Overall Dimensions : 1350 x 1250 x 1310 mm
Outlet Air Duct Size : 730 x 730 mm
Net Weight : 161 kg
Operating Weight : 216 kg

Performance

Nominal Airflow : 30,000 m3/h
Airflow@80Pa : 22,000 m3/h
Rated Current : 1st Speed – 7.1 A, 2nd Speed – 3.5 A Motor : 3.0 kW
Electrical Power Supply : 50Hz / 380V
Motor Design : 3-phase / 50Hz / 380V
Noise : ≤ 80

Operation Controls

Fan Speed : Dual Speed – 1440 / 930 rpm
Wall Controller : Multi-Function LCD
Water Capacity (l ) : 55
Water Consumption : 50@ 35˚C Dry Bulb, 28˚C Wet Bulb

Dimension

Cooler Overall Dimensions : 1350 x 1350 x 1426 mm
Outlet Air Duct Size : 767 x 767 mm
Net Weight : 152 kg
Operating Weight : 207 kg

Performance

Nominal Airflow : 30,000 m3/h
Airflow@80Pa : 22,000 m3/h
Rated Current : 1st Speed – 7.1 A, 2nd Speed – 3.5 A Motor : 3.0 kW
Electrical Power Supply : 50Hz / 380V
Motor Design : 3-phase / 50Hz / 380V
Noise : ≤ 80

Operation Controls

Fan Speed : Dual Speed – 1440 / 930 rpm
Wall Controller : Multi-Function LCD
Water Capacity (l ) : 55
Water Consumption : 50@ 35˚C Dry Bulb, 28˚C Wet Bulb

Evaporative Cooler - OS18
OS 18-B
Bottom Discharge
OS 18-S
Side Discharge
OS 18-T
Top Discharge
Dimension

Cooler Overall Dimensions : 1150 x 1150 x 950 mm
Outlet Air Duct Size : 650 x 650 mm
Net Weight : 80 kg
Operating Weight : 110 kg

Performance

Nominal Airflow : 18,000 m3/h
Airflow@80Pa : 10,000 m3/h
Rated Current : 1st Speed – 2.0 A, 2nd Speed – 0.85 A Motor : 1.1 kW
Electrical Power Supply : 50Hz / 380V
Motor Design : 3-phase / 50Hz / 380V
Noise : ≤ 76

Operation Controls

Fan Speed : Dual Speed – 1400 / 900 rpm
Wall Controller : Multi-Function LCD
Water Capacity (l ) : 30
Water Consumption : 30@ 35˚C Dry Bulb, 28˚C Wet Bulb

Dimension

Cooler Overall Dimensions : 1250 x 1150 x 950 mm
Outlet Air Duct Size : 647 x 647 mm
Net Weight : 100 kg
Operating Weight : 130 kg

Performance

Nominal Airflow : 18,000 m3/h
Airflow@80Pa : 10,000 m3/h
Rated Current : 1st Speed – 2.0 A, 2nd Speed – 0.85 A Motor : 1.1 kW
Electrical Power Supply : 50Hz / 380V
Motor Design : 3-phase / 50Hz / 380V
Noise : ≤ 76

Operation Controls

Fan Speed : Dual Speed – 1400 / 900 rpm
Wall Controller : Multi-Function LCD
Water Capacity (l ) : 30
Water Consumption : 30@ 35˚C Dry Bulb, 28˚C Wet Bulb

Dimension

Cooler Overall Dimensions : 1150 x 1150 x 982 mm
Outlet Air Duct Size : 650 x 650 mm
Net Weight : 86 kg
Operating Weight : 116 kg

Performance

Nominal Airflow : 18,000 m3/h
Airflow@80Pa : 10,000 m3/h
Rated Current : 1st Speed – 2.0 A, 2nd Speed – 0.85 A Motor : 1.1 kW
Electrical Power Supply : 50Hz / 380V
Motor Design : 3-phase / 50Hz / 380V
Noise : ≤ 76

Operation Controls

Fan Speed : Dual Speed – 1400 / 900 rpm
Wall Controller : Multi-Function LCD
Water Capacity (l ) : 30
Water Consumption : 30@ 35˚C Dry Bulb, 28˚C Wet Bulb

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Get in Touch

Bangkok
095-550-0838
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