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The importance of ventilation and 2 ways to do it at home - Natural vs. Mechanical Ventilation

The importance of ventilation and 2 ways to do it at home - Natural vs. Mechanical Ventilation

The importance of ventilation and 2 ways to do it at home - Natural vs. Mechanical Ventilation

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A senior just told me to ventilate the room. Why does he care so much about ventilation?
Because without ventilation, the air in the room will become stale.
Wait, who’s talking?
You work for a company that focuses on clean air, and you don't even know that much?
What? A talking cat?!
Everyone calls me Kiyo. I’m an eco-activist. And you are?
My name is Fuji (I guess I shouldn't stare too hard…)
Mr. Fuji, why do you think ventilation matters?
I never really thought about it. Kiyo-san, is ventilation really that important?

I’ve just answered that question for you a moment ago…

Yes, it’s very important. When you ventilate, you can get rid of moisture, smoke, and bad odors in the air.

Moisture, smoke, and odors?

Yes. For instance, when you cook, you may end up producing a lot of vapor or smoke. Ventilating will remove the excess moisture and decrease the risk of mold which can harm your health and also potentially damage your home.

Do you like fish? I know I do…

Yes, I do. Why?
Well, when you cook food with a strong odor such as grilled fish in a poorly ventilated kitchen, the odor can stay indoors for up to several days. I’m sure you have noticed.
Definitely, but I hadn’t realized the problem was ventilation.
Yes, to keep the indoor air clean, you should always ventilate well.
I turn on the air conditioner. That should do it, right?
Unfortunately not. Most air conditioners for domestic use simply circulate the air instead of ventilating the room.
Really? How do I ventilate a room then?
You’ve got two options. One is called ‘natural ventilation,’ and the other one is ‘mechanical ventilation.’
Natural ventilation? How does that work?

Simply open your doors and windows. The greater the number of opened doors and windows, the more efficient the ventilation will be.

In fact, it’s best to keep all windows and doors wide open so that you create airflow but even slightly opened windows will help.

I see but what do you do when there’s only one window?
Well, in that case, you can use a fan.
A fan?
Yes. Just make sure to place it near the open window and facing it. This way, the fan can send the stale air out and increase the speed of the ventilation.
That sounds easy. Does it work?

It works pretty well.

In fact, FUJIOH  conducted an experiment to measure the effectiveness of this method. The results showed  that the time required for replacing 80% of the air in the room is 25x times faster this way than ventilating without a fan.

*Note:

  1. Simulation results are based on Japanese laws, living environments, and test standards. The results may differ from the actual usage.
  2. This experiment was conducted using a ventilating-type cooker hood. Hence, similar results cannot be obtained with a recycling-type cooker hood.

That’s impressive!
Right? Even if your window is closed, a fan can help with the airflow. Ceiling fans are also great.
Ok. How about the second option you mentioned, mechanical ventilation?
This is ventilation done by using appliances like exhaust fans or cooker hoods.
Wait, is one better than the other?
Yes, mechanical ventilation is better. You just switch on the exhaust fan or cooker hood. It’s also much more efficient.
Then I know what I need to do.

If you can, definitely try it.

In another experiment, we found that mechanical ventilation with open windows is 4x times faster (*) than natural ventilation alone.

 

*Note:

  1. Simulation results are based on Japanese laws, living environments, and test standards. The results may differ from the actual usage.
  2. This experiment was conducted using a ventilating-type cooker hood. Hence, similar results cannot be obtained with a recycling-type cooker hood.

The cooker hood sounds very useful.
I’m glad you noticed. Most people only use the cooker hood when they are cooking but it actually helps with daily ventilation too. At lower airflow speeds, FUJIOH’s products don’t make much noise either.
I think a senior mentioned that before…

And now you understand why.

Letting fresh air come in through the windows is the basic requirement for natural ventilation. If you switch on the exhaust fan or cooker hood, you can ventilate better and faster.

There’s so much I need to learn. I’ll try ventilating right away.

Yes, ventilating is great for replacing the stale air in a room. At the same time, the fresh air that flows in is good for your health and well-being.

As professionals in improving air quality, FUJIOH is striving continuously to create a new environment under the vision of “Changing the air, improving the environment, to enrich tomorrow.”

 

Thank you very much, Kiyo-san. (I still can’t believe I've been talking to a cat at work…)
Next time you have a question, let me know. Good luck!

Fuji is a new employee, but with the help of Kiyo-san, he will continue to learn (and ventilate) for everyone's comfort as a member of FUJIOH, a company committed to air quality.

*Simulation Conditions

- The cooker hood was operated at "high" airflow speed, equivalent to 420 ㎥/h.
- The outside airflow speed was assumed to be 1 m/s from right to left.
- The "24-hour operation" function of the cooker hood was not used.
- The measured effect is the difference in ventilation time required to replace 80% of the indoor air.

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