The Energy Company cellulose pad, produced by Koulansell, consists of regular, corrugated thin sheets made of kraft paper. This type of paper has high wettability and water absorption properties and is saturated with chemical materials to increase strength and durability. The uniform and dense structure of the cellulose pad increases the contact surface between water and air compared to wood wool, resulting in more uniform airflow. (Figure 1)

Cellulose Pad Features

• Uniform structure and stable cooling efficiency
• High water absorption and cooling efficiency above 80%
• Reduced pressure drop of airflow passing through the cellulose pad
• Lower electricity consumption due to reduced pressure drop and high cooling efficiency
• Self-cleaning capability due to regular geometric structure
• Prevention of dust and small insects entering due to high thickness
• Reduced growth of fungi and algae due to special resin on the cellulose pad
• Longer lifespan due to uniform water flow over the pad and reduced transmission of harmful respiratory bacteria by minimizing water droplet carryover in airflow

Koulansell produces various types of cellulose pads for different applications including evaporative coolers, greenhouses, poultry farms, power plants, and data centers.

Cellulose Pad Product Groups

The chart below (Figure 1) shows a comparison of evaporation efficiency between wood wool and cellulose pads in evaporative coolers.

Currently, Energy Company uses two models, 5090 and 4090 series by Koulansell, for producing cooling products (evaporative coolers), which will be introduced below.

Cellulose Pad Series 4090

Due to its high density, this model has the highest evaporation efficiency and the greatest pressure drop. It is recommended for cooling systems with limited installation space for thick pads or where airflow velocity over the pad is high. In the 4090 model, corrugated cellulose sheets with a wavelength of 4 mm are stacked, and the corrugation direction of adjacent sheets forms a 90-degree angle (45/45) with each other. (Figure 2)

The 4090 model includes a water distribution system to ensure uniform wetting and maximum evaporation efficiency. The table below shows the evaporation efficiency of the 4090 cellulose pad at different thicknesses based on allowable airflow velocity in evaporative cooling systems.

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