Importance Of Passive Design

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• Reliance on temperature differentials • Design limitations regarding ceiling heights 5.1 PASSIVE DESIGN PERFORMANCE Passive design refers to the use of the sun’s energy for the heating and cooling of living spaces. In this context, the building itself or some element of it takes advantages of natural energy characteristics in materials and air created by exposure to the sun. The importance of passive design is that it can fulfill the thermal comfort, low heating and cooling bills and it also reduced greenhouse gas emissions for a long time in the house. Passive design use the natural sources as the medium for heatign and cooling such as the heat from the sun light and cool air breeze. The most important part to have a good passive design…show more content…
Orientation, thermal mass, sealing and other elements should take consideration as these elemnts all contribute to the design of a house that benefits from passive heating. To make a maximum advantage of the sun heat for heating: • Utilizes the area available for north facing windows. • Use large north facing window so more solar could access the house • Have the solar energy from the north facing windows land on thermal mass to absorb and store the solar energy before releasing it when the temperature drop. • Use a minimum south facing glazing to prevent from any heat loss • Design east and west facing glazing carefully to reduce heat loss during in winter season. • Use insulated glazing material to minimise the heat loss by the windows and to retain the…show more content…
A well insulated house can cool your house when it is summer and warm your house once it is winter because the insulation will absorb and trap the heat expose from the environment. Climate conditions determine the approriate level of insulation as well as the most appropriate type to choose. FIGURE 13: INSULATION 5.1.6 THERMAL MASS Thermal mass is the ability of the material to absorb and store the heat energy from the sun. A lot of heat energy is needed to change the temperature of high density materials such as concrete, bricks and tiles because a high density material have a high heat storage capacity thus have a high thermal mass. Lightweight materials such as timber have a small heat storage and low thermal mass. FIGURE 14: THERMAL MASS 5.1.7 GLAZING Glazed windows and doors bring in light and fresh air and offer views that connect the interior living spaces to the outside. In choosing a right glazing systems, orientation, climate, size and location of window openings in the building must take into consideration. Up to 40% of a home’s heating energy can be lost and up to 87% of heat gained through the glazing. FIGURE 15: GLAZING

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