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How to design openings for good air ventilation
โดย admin     2019-01-23



Thailand is popular for its hot weather. An option to release this heat for houses in the country, therefore, is the window. However, to open a window is a double-edged sword, because though it helps ventilate the heat, it also allows hot steam and too strong sunlight into the house. So, there are tips for you in arranging the positions, quantity, and ways of opening to effectively fulfil the functional requirements and promote the beauty of the house.

Basic knowledge to keep your house cool

(Photo by + Aao)

“Hot air” and “air ventilation” are the key factors that keep the house cool. The most basic thing that we need to know is that hot air always floats higher and higher. As a result, when the hot air that floats up high to the ceiling can be released out, the house will get cooler. Another thing is that the winds will flow into the house. Two opening should be placed exactly opposite to each other in order to make your house the coolest, because the wind will flow into a house only when there is also a way out.

A room should have openings on two sides

(Photo by Mario Mibowo)

Nature of the winds is that it will never flow into a space if there is only one opening. This is because the existing winds inside the room cannot be released out. Therefore, two openings should be positioned exactly opposite to each other in order to allow the winds to flow into. The opening allowing the winds to get in should be smaller than the opening allowing the winds to go out to make the winds flow stronger. If these two openings cannot be placed in the exact opposite position, some part of it should be placed overlappingly to create wind flow direction.

Another thing to be concerned is that openings should face the North and the South, because the winds from the North will flow from October-January (4 months), while the winds from the South will flow from February-September (8 months). Due to this reason, the smaller opening should be placed to face the South and the bigger one should be placed to face the North.

Open the windows to welcome all the winds

(Photo by Gokul Rao Kadam)

Either swing or sliding windows are recommended to be installed for wind flows. For the sliding windows, there should be some spaces to hide the panel when being open. We recommend these two because they are more freely openable than overlapping sliding windows, vertical sliding windows, or awning windows. They are openings that were designed for the benefits of wind flows.

Also, you should install window screens to prevent insects or undesired things while the windows are open and to allow only wind flows and natural lights. For security, you may install curved steels as well.

High windows

(Photo by Imbue Design)

In modern-style houses, another interesting option is a window of which the height is equal to that of the door, or a floor-to-ceiling windows with supports in some parts, such as a swing panel, or an awning panel that is 85-centimeter high from the floor, while the other parts are fixed panels. This will promote air ventilation and allow natural light throughout the day.

Louvre windows and breathable walls

(Photo by Shannon McGrath)

Louvre windows can be installed from inside or outside of the house. It is like a breathable wall, and a partition that separates two internal spaces without losing internal air ventilation. It is also suitable for any house where a swing or sliding window cannot be used due to privacy reasons. Louvre windows are a good choice because it can be either open or closed for air ventilation, and you can also install blinders for even more privacy.

An awning window together with the main window

Based on the Thai wisdom, normally in Thai houses, there will be “Yhong,” or beautifully perforated wood board for a purpose of air ventilation when closing the opaque panel installed under the window. It is applied to a modern as an approximately 20 to 25-centimeter high awning installed together with the main window. The size should be just only to allow the wind flow without being risky of invasion or falling down in case it is installed much higher from the floor.

If the window is placed on the upper floor and is not risky for any invasion, the lower part of the window can be an awning one to make the whole panel look higher based on the proportion of beauty and design, and the style should be in line with the exterior architecture. Or, maybe, you can design to have an awning window placed next to the main window. It will be a grid that is also attractive in its way.

Air ventilation within the space under the roof

(Photo by Salworks)

As we told you earlier that hot air would float up high, so most of the houses normally install louvre windows at the gable or at the topmost area of a room to allow the heat that floats high to easily go out of the room, resulting in better air ventilation. However, these parts may be a leakage, so the connecting part should be tightly sealed, or you may use eaves to initially help you on this.

Don’t forget to prevent heat from outside

(Photo by Tatjana Plitt)

Only openings will not help reduce the heat, because spaces in each house are different. For example, there would be a large wall, or the openings may be facing to the sun. So, it needs something else to help decrease the heat resulted from the strong sunlight, i.e. installations of double-layered windows, or insulated glass which has heat insulation in order to maintain the coolness within the house for longer period, or an installation of films to filter ultraviolet, reducing heat concentration before it enters the house.


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