ELI5: Explain Like I'm 5

Window design method

Window design method is a way of deciding how a building's windows should be arranged and designed to let in just the right amount of sunlight, fresh air, and warmth while keeping the building cool, energy-efficient, and comfortable.

Think of it like baking a cake. To make the perfect cake, you need to decide which ingredients to use, how much of each ingredient to mix, and how long to bake it. Similarly, when designing a building's windows, you need to decide which type of window to use, how big it should be, where to place it, and how to control the amount of light and heat that enters.

Window design method takes into account factors like the building's location, climate, orientation, and the purpose of each room. For instance, if a room faces south, it will receive the most amount of sunlight, so the windows might be smaller or have shading devices like blinds, curtains, or louvers to prevent glare, heat gain, and fading of furniture and fabrics. On the other hand, rooms facing north might have larger windows to let in natural light and views while minimizing heat loss.

Window design method also considers the energy efficiency of the window, which depends on its U-factor, solar heat gain coefficient (SHGC), air leakage rate, and visible transmittance. U-factor measures how well the window insulates against heat loss or gain, while SHGC measures how well it blocks or admits solar heat. Air leakage rate determines how much air can pass through the window, and visible transmittance measures how much light passes through. Choosing the right type of window and glazing can significantly reduce energy costs and enhance comfort.

Finally, the window design method aims to provide balance between functionality and aesthetics. A building with well-designed windows can enhance its aesthetic appeal, provide natural ventilation, daylighting, and views, and improve the occupants' health, productivity, and well-being.

In summary, window design method is a recipe for making the perfect windows that allow just the right amount of light, heat, and air to enter a building while keeping it comfortable, energy-efficient, and beautiful.