#UNCOMFORTABLE DEW POINT MANUAL#

Since the temperature in Container B is much higher, allowing the air to hold more moisture, the discomfort level is substantially higher than that in Container A. Yet, it is clear that Container B contains much more water vapor than Container A. Both containers measure a relative humidity of 50%. In the illustrator above, let's first take a look at Figure 1 to illustrate this. And this is what makes the dew point temperature a much more accurate and calculated indicator of the discomfort level you are experiencing. Relative humidity is the result of a calculation of the amount of moisture relative to the temperature in the air, not the specific amount of moisture actually present in the air. And this is where relative humidity becomes a problem. It is important that you keep in mind that the amount of discomfort or 'humidity' you experience is a direct result of the actual amount of moisture in the air. The illustration above will be used to try and best explain why this is the case. If the temperature continues to drop below this level, condensation will take place, and water droplets will start forming. (Also, at 100% humidity, the actual temperature and dew point temperature are also exactly the same.)

This is the point where the maximum amount of water vapor can be held without condensation taking place. Once the temperature drops low enough for relative humidity to reach 100%, Dew Point is reached. This simply means the lower the temperature, the higher the percentage of relative humidity.) (As you will discover in the linked article above, air with a warmer temperature can hold more water vapor than the same air at a lower temperature. Now let's say the relative humidity is 50% at 30 Degrees Celsius (86 degrees Fahrenheit).Īs the temperature starts dropping, the relative humidity starts to rise. (To find out more about humidity, you can read all about it in this article.)įor the sake of this argument, let's assume the barometric pressure and volume of air is constant and do not change in this scenario. In order to do this, first understand that dew point is very closely linked to relative humidity. Let's first have a look at how dew point is reached.

All the variables and conditions that need to be in place, however, is not that simple and need some explanation. Understanding what dew point is may not be that difficult. After all, it is these small water droplets that make clouds visible in the first place.) How And When Dew Point Is Reached (Clouds are nothing more than water vapor that reached dew point and formed small water droplets as a result.

Especially when you consider the way in which they are formed. The same process happens higher up in the atmosphere, where the formation of clouds results from the temperature dropping to below dew point level.īasically then, the clouds we see in the sky, as well as the dew we see on the ground in the mornings, are essentially one and the same thing. Connected windows, fans, heating and air conditioning systems are controlled to prevent the formation of condensation water.When dew point occurs at ground level, water droplets form on plants and other objects in the form of dew. Through the smart combination of Elsner Elektronik sensors, room controllers and actuators, the danger is recognised in good time and countermeasures can be taken. Therefore, many devices from Elsner Elektronik offer integrated dew point monitoring.

#UNCOMFORTABLE DEW POINT MANUAL#

However, manual monitoring is very time-consuming and uncomfortable. For example, the temperature of the coolant may be raised (reduction of air conditioning), the room temperature may be raised, or the air humidity lowered (ventilation). Thanks to the monitoring process, the building automation system can implement timely measures in order to avoid droplet formation. The moisture of the warm room air can settle here if surface and dew point temperatures approach similar values. In buildings, condensation, sometimes also referred to as „dew water“, occurs particularly on cooled pipes and surfaces of air conditioning systems. The objective of dew point monitoring is to avoid this. If there is a surface in this room that is 15.8☌ or colder, water droplets will develop on it. The dew point temperature is that temperature at which condensation develops on a surface.įor example: At an air temperature of 24.0☌ and at 60% relative humidity, the dew point is at a temperature of 15.8☌.

Uncomfortable dew point