When it comes to cooling, if you use a single air conditioner with an appropriate capacity to process a lot of hot air, it will be more fuel efficient and easier to reduce humidity.

I think many people have started using air conditioning in the office.
*Even though Matsuo Design Office does not allow ventilation in the summer, we still use ventilation during this time and in October.
In this case, even if the capacity is sufficient, if the air conditioner is far away, the cool air will not reach it and complaints about it being hot are likely to occur.
In this case, the less insulated and protected from sunlight the house is, the lower the temperature setting has to be. Naturally, the lower the temperature, the heavier the air becomes. In other words, no matter how horizontal the flap is and how strong the wind mode is, the airflow will immediately descend and will not reach far.
Moreover, because only your feet get cold, it can easily lead to the discomfort and air conditioning sickness I mentioned yesterday. To prevent this, as I wrote at the beginning, it is important to properly insulate and block sunlight, but if you use a reheat dehumidifier, not only will the humidity be lower, but you can also set the temperature of the cold air higher.
As a result, the cool air can be easily spread over a long distance, and your feet won't get cold easily, making it very comfortable.
The same thing can be said about heating, but in the opposite way. In a house with poor insulation and airtightness, the temperature of the warm air needs to be higher. The higher the temperature, the lighter the warm air becomes, so no matter how hard you try to hit it toward the floor with a flap, it will try to rise up immediately. It can be said that underfloor air conditioner warm air heating is a dramatically effective way to solve this problem. Also, if your feet are warm, you will feel comfortable immediately, so there is no need to raise the set temperature more than necessary, which also saves energy.
Considering this, it seems natural that cooling using the ceiling cavity would be very comfortable. Our company uses an attic air conditioner for cooling only on the second floor, but there are many private rooms on the second floor, and installing a 6-tatami mat air conditioner in each room would be too much in terms of capacity. The equipment would be expensive, and the amount of sensible heat that each air conditioner can process is too small, so it would not be able to dehumidify properly.
Especially when it comes to cooling, if you use a single air conditioner with an appropriate capacity to process a lot of hot air, it will be more fuel efficient and will also help reduce humidity. This is true whether or not there is a reheat dehumidification function.
I think it would be difficult to explain this to anyone other than those who have a solid understanding of the principles, but that's the end result.
May 26, 2017