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crucial for manufacturers to evaluate their impact and contribute towards sustainable solutions . The company urges organisations to prioritise the development of eco-friendly products and technologies to mitigate the effects of climate change .
The various types of Evapco cooling systems – known as the full Spectrum of Cooling Products – available include :
• Evaporative fluid cooler or evaporative condenser : This product range represents the standard for Evapco cooling systems . It operates as a closed-circuit fluid cooler , ensuring optimal efficiency for your cooling needs .
• Hybrid fluid cooler or Hybrid Condenser : Evapco also offers a hybrid fluid cooler , which combines a dry coil and a wet well . This configuration optimises the system ' s operation and provides improved performance for your cooling requirements . It offers the best combination of both water and energy savings .
• Full air cooled units : The next step in the evolution of Evapco cooling systems is the full air cooled unit . These units operate without the need for water , making them straightforward and easy to understand .
• Air cooled units with adiabatic pads : One of the most interesting options offered by Evapco is the air cooled unit with adiabatic pads . These units provide enhanced cooling performance by utilising adiabatic pads . Essentially this is a dry cooler with wet trim .
Understanding the principle of operation of evaporative condensers is crucial in comparing different Evapco cooling systems . The coil in these systems allows for the efficient introduction of refrigerant , resulting in 100 % wet conditions throughout the year .
Comparing the water consumption of various Evapco cooling systems is essential . The suggested rule of thumb for evaporative systems is that 85 % of the process involves latent heat rejection , while 15 % is related to sensible heat rejection .
Each Evapco cooling system requires consideration of factors such as evaporation rate , drift loss and bleed . Drift loss depends on the efficiency of drift eliminators , and Evapco systems are designed to achieve high efficiency in this regard . Additionally , working with a qualified water treatment professional can help ensure the appropriate cycles of concentration are maintained .
The hybrid cooler , featuring a combination of dry and wet modes of operation , offers significant water and energy savings as it fluctuates between different modes based on ambient conditions . This allows for a more efficient and sustainable cooling solution .
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RACA Journal I January 2024 www . refrigerationandaircon . co . za