If you can make it to your thermostat when your alarm goes off the first time , you can create a cool environment that can last throughout the day.
Evaporative coolers can provide excellent cooling power during the mid-morning hours before 10AM. If you are allergy prone, however, it may be a good idea to wait until the evening.
Pollen counts are highest in the morning hours, which can affect the indoor air quality of your home. While the sun is strongest between the hours of 10AM and 2PM, this does not necessarily make it the hottest part of the day.
The temperature outside usually hits its peak in the afternoon, a few hours before the sun goes down. During the hottest part of the day, it is not ideal to run your swamp cooler. You will only be able to lower the temperature to a certain extent. But, if it is exceptionally hot outside, running the swamp cooler will be absolutely essential for comfort. The machine works by speeding up the evaporation process with a simple fan to draw in hot, dry air and spit out more humid, cold air.
An evaporative cooler has a specially designed pad that absorbs water from a reservoir. The pad has many layers to increase its surface area so that water can evaporate more quickly.
A fan brings a supply of air directly across the pad, where contact with warm air stimulates water molecules to evaporate and turn to gas. This process results in cool air that is then blown out of the unit to make your home more comfortable. For people in dry climates, the more humid air that comes out of an evaporative cooler can be a bonus for comfort as well, as skin and nasal passages generally do better with some degree of humidity for good health.
See What Are Evaporative Coolers? Knowing that an evaporative cooler works similarly to the way your body naturally cools itself with sweat, you may find yourself wondering: Should I buy an evaporative cooler where I live? Wondering if an evaporative cooler is a good purchase for your home? The right environment for an evaporative cooler depends on both air temperature and relative humidity where you plan to use the cooler. On any given day, Mother Nature can deliver a wide range of air temperatures and humidity.
Air changes in either category will influence how well your evaporative cooler works. Air temperature is probably exactly what you think it is: how hot or cold the air feels based on a standard thermometer reading.
As water evaporates from that fabric into the air, it cools the temperature around the thermometer down a bit, and you get a reading that takes into account how humidity affects cooling.
If the wet bulb temperature is significantly colder than the dry bulb temperature , it means the humidity is low and you have good evaporation going on — great conditions for using an evaporative cooler. Relative humidity is measured as a percentage that expresses how saturated the air is with water. Hot air can hold more water than cold air , so the same amount of humidity — also known as absolute humidity — on a cold day will feel more humid than it would on a hot day.
To account for the ways temperatures affect humidity, meteorologists tend to talk in terms of relative humidity instead. This percentage takes the amount of moisture in the air and compares it to the absolute maximum amount of water that air at that temperatur e can hold.
As the water evaporates, the hot air is cooled. This chilled air is then distributed through the front of the evaporative cooler by a fan. The higher the ambient air temperature dry bulb temperature is, the faster evaporation can happen and the cooler the air will be.
The more space between your wet bulb and dry bulb temperatures, the higher your evaporation efficiency will be. That means on a typical day, humidity will be higher in the morning when it is cooler. That humidity will reduce as the mercury rises and it becomes hotter in the afternoon. Put more scientifically, when the air temperature dry bulb goes up, humidity wet bulb will go down. Of course, rain is an exception to the rule.
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