The relationship between moisture, diatomaceous earth, and total heat exchangers

The relationship between moisture, diatomaceous earth, and total heat exchangers
This morning I had a meeting in Osaka, and in the evening I signed a contract at the office.
Tomorrow we have a hectic schedule going from Senri to Osaka city to Nishinomiya.
I have written my thoughts on the summer heat for two days in a row, but to summarize them:
"The relationship between moisture, diatomaceous earth, and total heat exchangers"
I would like to summarize the following.
Diatomaceous earth seems to vary depending on the type, but it is used in desiccant air conditioning.
(A system in which the desiccant is dried and reused when it becomes saturated.)
If diatomaceous earth is properly dehumidified using an air conditioner or dehumidifier,
It is said to have a dehumidifying effect of approximately 10% relative humidity.
It depends on the temperature, but at 27°C the absolute humidity difference is about 1.2g/kg.
Above 30°C, it corresponds to about 3g/kg.
Yesterday's graph showed the change in absolute humidity when the air conditioner is kept on cooling.
However, if we do a simple calculation, the maximum difference between exchanging latent heat and not exchanging it is
The results showed a difference in moisture content of nearly 5g.
However, in reality, only the exchange membrane of the total heat exchanger of the SE200R is made of aluminum.
I have experimented with replacing it with a sensible heat exchanger, and the difference was
The effect observed was approximately equivalent to 2 g in absolute humidity.
This is probably because the calculation ignores the inflow of moisture due to air leaks.
However, 2g is roughly the average value of diatomaceous earth, so
I think this is an excellent result. This means that the total heat exchanger also has a relative humidity
It can be said that there is a reduction effect of approximately 10%.
By the way, when diatomaceous earth absorbs moisture, its temperature rises slightly due to physical effects.
This is a very good thing for air conditioners.
As mentioned above, the air conditioner
This is because they are better at lowering temperature than they are at lowering humidity.
The secret to using your air conditioner effectively in the summer is to avoid using the dehumidification mode (especially reheat dehumidification) as much as possible.
Stick to cooling operation. Most people think that dehumidification (dry) operation is more energy efficient.
This is a misconception, but the reheat dehumidification mode that is common in mid- to high-end models consumes more energy than air conditioning.
This is because if you try to dehumidify only with an air conditioner that has a weak dehumidifying function, you will first need to operate it in cooling mode.
The temperature is lowered more than necessary to thoroughly dehumidify the room, and then energy is input again to heat it up again.
Because it includes the process.
This is a very wasteful story, but the diatomaceous earth itself reduces the moisture content,
It also raises the temperature a little.... This is truly a mutually complementary relationship.
(In the first place, air conditioners and solar power generation during the daytime in summer also have a similar complementary relationship.)
Recently, Daikin released the much talked about desiccant air conditioner "Desica" and
Osaka Gas's Air Cure desiccant air conditioning system is also used to dry desiccant materials.
One uses electricity, the other gas. I have a lot of solar hot water.
I was thinking of using the paper, but there are people who have done it before, and there are already papers like that.
.
However, if you change your perspective, you can keep the temperature up without using energy while using air conditioning.
There is actually a very simple way to maintain dehumidification and energy-saving performance by raising the temperature.
This is a very twisted idea, but it is possible to use movable sunshades (such as blinds) to block sunlight.
If you are using a shading system, use a weak air conditioner and let in just enough sunlight to avoid overheating.
That's the method. I've never tried it, but it's theoretically possible.
Finally, with vinyl wallpaper for the three-type ventilation, small air conditioners can be operated at low power in highly insulated houses.
Even if the temperature becomes comfortable by doing this, it is quite difficult to bring the humidity to a comfortable level.
Alternatively, you could lower the temperature too much to bring the humidity level up to a comfortable range, but that would be a waste of energy.
It is most ideal to use either a total heat exchanger or diatomaceous earth (equivalent to 4g reduction).
By using only one of these, the radiation level will drop by about 2g. If the radiation level drops by 4g, simply turning on the air conditioner will reduce the radiation level by about 2g.
The temperature and humidity are both really comfortable, so there is no need to lower the temperature more than necessary, and there is no risk of air conditioning sickness.
Unrelated... That's what I think.