How to Choose the Evaporative Coolers
What Are Evaporative Coolers? - Everthing You Need To Know Before Choosing An Evaporative Cooler
What Are Evaporative Coolers?
An evaporative air cooler functions as an air conditioning system that utilizes the process of evaporation to lower air temperatures. As water evaporates, it transitions from a liquid to a gas state. During this transformation, the highest-energy particles escape from the water, causing a decrease in temperature.
How do Evaporative Coolers Work?
An automated evaporative cooling system efficiently reduces the indoor air temperature by utilizing the principle of basic evaporation. The system consists of essential components, including a fan, a thick water-absorbing pad, a water reservoir, and additional controls for precise adjustments. The fan pulls in dry, hot air from the surroundings and directs it across the cooler pads. These pads are designed with multiple layers to enhance the surface area for better water absorption. As the hot air passes over the pads, the water molecules on the surface evaporate, resulting in a significant temperature drop within the cooler, often up to 20 degrees. The fan then circulates the cooled air into your room, allowing you to relish the refreshing chill on a hot day.
Differences Between an Evaporative Air Cooler and Air Conditioner
Evaporative Air Cooler:
- Cooling Mechanism: An evaporative air cooler, also known as a swamp cooler, uses the process of evaporation to cool the air. It pulls in warm air from the surroundings, passes it through water-soaked pads, and then blows out the cooled air.
- Energy Efficiency: Evaporative coolers are generally more energy-efficient compared to air conditioners. They consume less electricity because they do not require compressors or refrigerants to cool the air.
- Humidity: Evaporative coolers add moisture to the air as part of the cooling process. This can be beneficial in dry climates as it helps to increase humidity levels, providing relief from dryness.
- Cooling Capacity: Evaporative coolers are effective in cooling small to medium-sized spaces, such as individual rooms or outdoor areas. They may struggle to cool larger areas or spaces with high humidity levels.
- Ventilation: Evaporative coolers require proper ventilation to work effectively. They work best when there is a constant flow of fresh air, so windows or doors need to be partially open to allow for air circulation.
Environmental Impact: Evaporative coolers are considered more environmentally friendly as they do not use harmful refrigerants and consume less energy.
Air Conditioner:
- Cooling Mechanism: Air conditioners use a refrigeration cycle to cool the air. They extract heat from the indoor air and release it outside, resulting in a cooler indoor environment. This process involves compressors, refrigerants, and condensers.
- Cooling Capacity: Air conditioners are designed to cool larger areas effectively, such as entire homes, offices, or commercial spaces. They have higher cooling capacities and can maintain a consistent temperature even in hot and humid conditions.
- Humidity Control: Air conditioners can dehumidify the air as they cool it. They remove excess moisture from the indoor environment, making them suitable for areas with high humidity levels.
- Energy Efficiency: Air conditioners typically consume more energy compared to evaporative coolers due to the complexity of their cooling process. However, energy-efficient models are available that help reduce electricity consumption.
- Ventilation: Air conditioners do not require open windows or doors for ventilation. They recirculate and cool the indoor air, making them suitable for sealed environments.
- Environmental Impact: Air conditioners use refrigerants that can contribute to ozone depletion and global warming if not handled properly. However, newer models use more environmentally friendly refrigerants.
In summary, evaporative air coolers are more energy-efficient, add moisture to the air, and are suitable for smaller spaces. Air conditioners have higher cooling capacities, dehumidify the air, and are better suited for larger areas. The choice between the two depends on factors such as climate, space requirements, and personal preferences.
Choosing An Evaporative Cooler
When choosing an evaporative cooler, there are several factors to consider. Here are some important points to keep in mind:
- Climate: Evaporative coolers work best in hot and dry climates where humidity levels are low. They are less effective in areas with high humidity. Consider the climate of your location before deciding on an evaporative cooler.
- Cooling Capacity: Determine the cooling capacity you need based on the size of the area you want to cool. Evaporative coolers are rated in terms of cubic feet per minute (CFM) or square footage they can effectively cool. Ensure the cooler you choose can handle the size of the space you want to cool.
- Portability and Size: Consider the portability and size of the evaporative cooler. If you plan to move it around frequently or use it in different rooms, a portable and lightweight model would be more suitable. Measure the available space where you intend to place the cooler to ensure it fits properly.
- Water Tank Capacity: Check the water tank capacity of the evaporative cooler. A larger tank will require less frequent refilling, but it will also increase the overall size and weight of the unit. Consider your convenience and the frequency of refilling when deciding on the tank capacity.
- Energy Efficiency: Look for an energy-efficient evaporative cooler to minimize electricity consumption. Check for an Energy Star rating or look for models with energy-saving features like variable speed settings or programmable timers.
- Noise Level: Consider the noise level of the evaporative cooler, especially if you plan to use it in bedrooms or quiet areas. Look for models that have noise-reducing features or operate quietly.
- Additional Features: Some evaporative coolers come with additional features like remote controls, oscillation, air purification, or built-in timers. Consider these features based on your preferences and needs.
- Price and Warranty: Compare prices and check the warranty offered by different brands and models. Consider the overall value for money, including the initial cost, maintenance, and long-term durability.
By considering these factors, you can choose an evaporative cooler that suits your specific needs and provides efficient cooling in your desired environment.
Tips to Get the Most Out of Your Evaporative Cooler
Because evaporative coolers operate differently from standard air conditioning units, you'll need to reconsider how you use them to achieve the most efficient cooling. Follow these tips to experience the coolest and most comfortable air possible:
- Keep the Windows Open
In contrast to standard A/C, where you seal your home to retain cold air, evaporative coolers require a continuous flow of fresh air. By keeping a window open near the intake fan, dry, warm air is drawn into the cooler for rapid evaporation. Open windows also enable the humidified air from the cooler to escape, preventing your home from becoming excessively damp. - Maintain the Water Supply
If you don't use your cooler for an extended period, make sure to empty and clean the reservoir to prevent mold and mildew growth in moist areas. This will ensure that your evaporative cooler functions properly and maintains clean air quality. - Choose the Right Size Cooler
Before purchasing, check the recommended square footage that the cooler covers and measure your room to select the appropriate cooler size. For larger spaces, you might need more than one cooler, or simply directing the fan towards your sitting area might suffice to achieve a comfortable temperature drop. - Avoid Using Ice
Unless your cooler is designed with a specific ice pack for its reservoir, adding ice to the water can actually slow down the evaporation process and reduce the cooling effect. It might seem counterintuitive, but water needs to warm up slightly to evaporate efficiently. Adding ice to your cooler can hinder its performance and make it less effective in cooling the air.
