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on a hot day, should you keep your windows open or closed? - outside air conditioner

by:HICOOL     2021-10-11
on a hot day, should you keep your windows open or closed?  -  outside air conditioner
Our house doesn't have much shade, so on those rare hot days in Vancouver, I often wonder how to best keep things inside cool.
One of the things I worry about most is how to deal with the windows.
Should I keep them open and let the breeze pass through or close them to keep the cool air as long as possible?
From the information I have gathered from it, the answer to this question is actually: when the air outside is cooler than the air inside --
Like dawn, dusk and night
Keep the windows open to cool your house.
When the air outside is warmer than the air inside
Like noon. keep them shut.
But recently I found that this simple suggestion is not so simple after all.
In the past, I usually just decided whether to keep the window open or closed based on the feeling: if the outside is colder than the inside, I will open the window.
But recently I tried a more scientific approach.
I took a small portable digital thermometer and actually measured the temperature outside and then compared it to the temperature inside.
To make sure I get fair reading outside, I always make sure to put the thermometer in the shade, not on any particularly hot surface.
To my surprise, I find that many times, when the air outside is cooler than the air inside, it is actually the opposite --
This is obvious sometimes.
In fact, many times when I open the window to let the breeze in, I find that the air outside is actually three or four degrees (Celsius)
Hotter than inside.
Based on this new information, I found myself closing the window during the day much longer than in the past --
Close the window earlier in the morning and open it later in the afternoon.
This is indeed a difference.
At the end of the hot day, I found the interior of our home more comfortable with at least a few degrees cooler on the thermostat.
So, what is the difference between the feeling of air and the actual temperature? My guess: Wind.
As we all know, even if it is a breeze, the air will be particularly cool.
And, especially in Vancouver, there is often a breeze on the sea.
But it is important to distinguish how hot the air is and how hot the air is.
Opening the window on a warm day of a breeze may make you feel like you're cooling your house, but it's an illusion.
In fact, although the breeze feels good, you are actually getting more and more hot air into your home.
In my opinion, the better strategy is to close the window, lock in the cold air, and then use the fan to move the air if necessary to make yourself feel cooler.
It takes some discipline to keep the windows closed for most of the day.
Deep inside you, it feels wrong: just like you let your house bake in the dirty air all day.
But believe me, it's worth it.
To make sure you open and close the windows at the right time, I suggest you use a thermometer
At least a few days ~
Compare your gut reaction to the real temperature.
If you have any other tips on how to stay cool during the hot summer, please comment below. [Photo by]
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