By Daisy Evaporative cooling is a method of cooling air by evaporation. The pump, cooling pad, and fan are the three main components of an evaporative cooler, which is also known as a swamp cooler in some circles.
The procedure is quite straightforward in its operation. A pump is located within the evaporative cooler, and it is responsible for circulating water from the reservoir onto a cooling pad. As a result, the pad becomes wet. A fan is also included in the cooler, which draws air from the surrounding environment and circulates it through the moistened pad to cool the contents. Evaporation cools the air as it passes through the pad as it passes through it.
When it comes to evaporative cooling systems, there are two temperatures that you should be aware of. The first is the ambient temperature. These are the ones:
It is customary to measure the dry-bulb temperature (the natural temperature of the air surrounding us) with a thermometer.
The wet-bulb temperature is the lowest temperature that can be reached solely by the evaporation of water from a bulb of water.
The psychometric diagrams below depict the direct and indirect evaporative cooling processes, respectively. To learn more about what evaporative cooling is and how it works, visit our blog by clicking here.
Water must be heated to transform from a liquid to a vapor, and this energy is typically obtained from the surrounding air. The air that enters the cooler releases heats energy, which is used to evaporate the water. It is during this process that the dry bulb temperature (the temperature at which air passes through the cooler) is lowered and distributed back into the surrounding environment. The temperature of the water does not have any effect on the amount of cooling produced by the evaporation process, which is an important concept to grasp.
The humidity of the air is a critical factor in the efficiency with which evaporative cooling operates. It is only when the relative humidity of the air is less than 100 percent that evaporation takes place. The lower the relative humidity, the more effective the evaporative cooling process will be. The potential for evaporative cooling is assessed by comparing the wet-bulb temperature of the water to the dry-bulb temperature of the surrounding air. The relative humidity is calculated based on the values of these two indicators.
What about evaporative coolers, do you think?
One of the most significant differences between an evaporative cooler and a portable or fitted system is that the evaporative cooler does not require the use of exhaust hoses or external condenser boxes. A further distinction between them and air conditioners is that they do not provide refrigerant air,’ but rather ‘cooled air,’ instead.
One of the most appealing aspects of evaporative cooling is its incredible cost-effectiveness, which can reduce your operating costs by up to 90 percent. It is also the most environmentally friendly solution available on the market, as it introduces fresh air, which is free of refrigerant gases.
Visit portacool.com to learn more about the differences between a swamp cooler vs evaporative cooler.
How can you make sure you’re getting the most out of your evaporative cooling system?
Keeping each of the cooling pads completely saturated at all times during operation, as well as ensuring that the system’s fan and motors are sized and designed to deliver the appropriate airflow for your facility, is the key to effective evaporative cooling.
Working with an experienced supplier who understands the specific requirements of your industry sector, such as reducing downtime and ensuring that the installation and commissioning of the system are carried out without the risk of contamination, is critical to achieving success.
Nonetheless, we should not lose sight of the fact that evaporative cooling is not always the best solution for your needs, and in some cases, it may even be the wrong solution depending on your industry, environment, and location where you would like it installed. A few examples of restrictions on the appropriate use of evaporative coolers are as follows:
• They should not be used in enclosed or unventilated spaces because they rely on the flow of fresh air to ensure that the process is successful.
They would only end up pumping humidity into the area if they were used in an unventilated environment, causing it to become damp and resulting in mold growth as well as other subsequent damage to electrical systems or contents in that area.