The rainy season has ended in the Okinawa and Amami regions, and a full-scale rainy season is coming to Honshu. Of course, the temperature is rising, but what is particularly worrisome at this time of year is the “humid” and uncomfortable rise in humidity.
Weathernews will conduct a survey in 2022 regarding dehumidification at home during the rainy season. We asked users of the Weather News app about three items during the rainy season: “use the dehumidifier (dry) of the air conditioner”, “use a dehumidifier”, and “do not use it”, and received responses from 10,388 people. rice field.
Nearly two-thirds use “Dehumidification”
Questionnaire results
As a result of the questionnaire, 47% of the respondents said that they would use the dehumidifier (dry) of the air conditioner, 17% said that they would use a dehumidifier, and 36% said that they would not use it. Nearly two-thirds of people use some kind of dehumidification equipment during the rainy season.By region, “use air conditioner dehumidification (dry)” and “install a dehumidifier” exceeded 60% in all regions except Hokkaido and Koshin, with particularly high values of 85% in Okinawa and 72% in Kyushu. showed.
Reheat dehumidification of the air conditioner is recommended during the rainy season
Comparison of cooling and dehumidification
Air conditioners and dehumidifiers can dehumidify with a single switch, but there seems to be a more effective way to use them during the rainy season. We asked Mr. Chikashi Shigemasa of the Public Relations Group of Daikin Industries, Ltd. about the dehumidification function of air conditioners and how to properly use dehumidifiers.“In the case of air conditioners, cooling is the primary function of lowering the ‘temperature’ of the air in a room. Lowering “humidity” is the number one priority, driving moisture out of a damp room and making the air “dry”.
There are mainly two types of dehumidification functions: “weak cooling dehumidification” and “reheat dehumidification”. The mechanism of expelling moisture to the outside is the same, but the temperature of the air returned to the room is different. Mild cooling and dehumidification returns air that has been cooled to collect moisture into the room. It is similar to a weak air conditioner, so you may feel chilly.
Low cooling and dehumidifying lowers the temperature a little like weak cooling, so it is effective when it is hot and humid.
On the other hand, in reheat dehumidification, the air whose temperature has been lowered is reheated to an appropriate temperature before being returned to the room. Since it is difficult to lower the temperature in the room, reheat dehumidification is recommended for people who do not want to cool down, such as during the rainy season when the humidity is high but the temperature is not that high.
However, although it varies depending on the manufacturer, it is necessary to be aware that typical reheat dehumidification uses a little more electricity to reheat the air.” (Mr. Shigemasa)
Place the dehumidifier in the room on the north side.
Please tell me how to use the dehumidifier effectively during the rainy season.
“If the room temperature is around 25°C, set the humidity of the dehumidifier to 40-60%. If you’re away from home during the day, such as a double-income household, we recommend dehumidifying while you’re away. If your house is highly airtight, close the door to the room. If you open the door, you can dehumidify the entire floor.
We recommend placing a dehumidifier in a room on the north side, where the room temperature is lower than in a room on the south side, where sunlight tends to enter. In an enclosed space, the humidity tends to be uniform in all rooms, but the lower the temperature, the less moisture the air can hold, so the north side of the room is relatively more humid than the south side. This is because the humidity increases.
In the case of air conditioners, it is a good idea to consciously dehumidify rooms that tend to be damp, such as rooms on the north side, as with dehumidifiers.” (Mr. Shigemasa)
In the rainy season, when the humidity exceeds 80%, the environment becomes suitable for the growth of mold and dust mites, increasing the risk of allergies. Let’s understand the dehumidification function of the air conditioner and the characteristics of the dehumidifier well, and try to dehumidify effectively, not only to remove the damp discomfort, but also for your health.
Reference materials, etc.
2023-06-29 01:00:00
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