Frequently asked questions about our products and dehumidification
Challenges with moisture - Typical questions about moisture management
Answer: The energy efficiency of a dehumidifier is measured in the energy consumption to extract a kilo of water from the air, in the climate in which it is to work. There, the capacity is stated in the number of kilograms of water per hour, then it is multiplied by the dehumidifier's power consumption, so you get the cost of dehumidifying! It is important to use the right temperature and humidity level when comparing! Especially if you also want to save energy by lowering the temperature in the room. Good moisture level in most premises is below 60% RH. Then you avoid mold and corrosion. All older techniques require more energy at lower temperatures. Airwatergreen hot condensation technology is the only one that is completely independent of the climate in which the dehumidifier works. With the FLEX series, it only costs 2 KWh to extract 1 kilo of water from the air according to the test by the State Testing Institute, with the REX series about 1.5 KWh per kilo of water.
See diagram of Statens Provningsanstalt (SP) (RISE).
If you would like help with calculating moisture or life cycle calculations (LCC) for the next dehumidification purchase, please email us at firstname.lastname@example.org
Answer: The important factor for corrosion is the dew point on the pipe. If the pipe is colder than the air in the room, the dew point is lower at the pipe and moisture in the air will begin to form on the pipe with corrosion as a result. Just like a soda you can on a hot summer day. We can calculate the dew point and configure the dehumidifier to use sensors and work to maintain the correct humidity level to avoid corrosion.
Dew point diagram
Answer: Yes, we can do a moisture study using sensors. We place these moisture sensors in selected positions for a couple of weeks and can, based on data from these sensors, present an assessment of the moisture levels over time. Based on these data, we can advise on how to proceed depending on the type of moisture challenges using a calculation methodology that we have developed.
Answer: We have the equipment and can help you with the installation and if necessary install a drainage pump that takes out the water from the space if it is under ground and there is no floor drain or drain.
Answer: No, you can lower the temperature. Our technology is equally effective in cold air as in hot air. This has proved very successful in churches and buildings that are not always used. No unnecessary heating is needed and our FLEX and REX keep the humidity at the right level. This means that you can save energy both from lower heating costs and from a more efficient dehumidifier.
Dehumidification methods - Which is best depends on the conditions. Here we try to describe the advantages and disadvantages of the various methods
Warm condensation is a technique where, in a first step, the moisture is trapped in an adsorbent which is then dried out in a closed hot condensation process. Water and dry air are supplied. No connections other than drainage for water are needed, which makes the installation simple and that all energy supplied stays in the room and not ventilated out. With Airwatergreen's technology, which makes the dehumidifier work equally efficiently in all climates regardless of temperature and can therefore dehumidify even in freezing temperatures.
How hot condensation works as a method is described in detail in this report Modeling a novel sorption dehumidification method - written by Per D
Keep the air warm can hardly be considered as dehumidification method because no moisture is removed from the air. However, heating the air will lower the relative humidity (RH) level as hot air can "hold" more humidity than cold air. No water is removed from the building's air, which means that the heating must be kept running forever to avoid too high a relative humidity. A study done at Uppsala University shows that keeping the same relative humidity is about 5 times more energy-intensive, with the help of heating against using dehumidification. If you want to read the study, it is available for download HERE.
Ventilation should not be considered dehumidification since no water is removed from the air. Method is entirely dependent on the outdoor climate and how the temperature is in relation to the temperature in the space that has challenges with moisture.
Maybe you bring in more humidity to the building instead of removing it?
Ventilation is used quite often because it is considered a cheap and simple solution. But ventilation can create more problems than it solves. A typical situation we often see is when ventilation releases hot moist air into the cool creep ground during the summer - not a suitable method!
Water drops are created on a cold surface - this is generally known.
This is due to the fact that cold air cannot contain the same amount of moisture as hot air. This fact can be used in dehumidification as it actually removes the water from the air. But at the same time, this phenomenon is also the reason why corrosion and mold occur in buildings and constructions!
To use cold condensation as a dehumidification method, the air must be reheated after condensation.
Otherwise, the relative humidity will be at the same high level.
This means that this method can only be used at certain temperatures to avoid ice buildup at the cold surface.
Sorption dehumidification is considered the modern dehumidification method that was created in the 1950s in Sweden to dehumidify under Swedish climate conditions.
Over the years, this method has been used in many installations. The method involves catching the moisture in the air in a slow rotating wheel to dry the wheel with hot air in step two.
The warm air then catches the moisture, which is then typically led out through a hole in the wall.
Installation can easily become costly depending on how you can discharge the air and energy is lost through the hole in the wall.
Questions about the products - FLEX, REX, Blackbox
With the new Temp Guard function in Flex you can ensure that the space stays free of frost with the built-in element as a heat source.
Read more about Temp Guard
To be completely safe on our case, we let Statens Provningsanstall (now RISE) test our dehumidifier and compare with a traditional sorption dehumidifier. The result of that test shows that our dehumidifiers consume half as much energy to dehumidify the same amount of water.
Do you want to read the whole test? Klicka HÄR.
The water taken out of the air is delivered from the outlet on the side of the dehumidifier. A hose can easily be connected to connected so that the water can be delivered to a drain or a tank. If no sewage is available, specially designed containers are available.
A freestanding model and a container which at the same time acts as a trolley on wheels to easily move FLEX if necessary.
FLEX leans to create self-drainage. The water runs out of the machine without having to use any pump. This reduces energy consumption and minimizes the number of moving parts.
If the green lamp changes from a steady light to flashing then the dehumidifier needs service. There are instructions in the manual under Chapter 6 - Service. Or contact our support at email@example.com.
Yes, both the FLEX and the REX model Integrate are prepared for communication via Modbus to control or monitoring systems.
The Cloud model can be connected via WIFI.
The dehumidifier status is available, as well as data from sensors that record humidity (RH), temperature, etc., available.
We recommend replacing granules once a year to maintain full capacity of the dehumidifier.
This is included as a delivery in our Service agreement.