What is passive cooling?
Passive cooling is a method that includes design and technology for cooling a building without using energy. Traditional cooling equipment, such as air conditioning or evaporation cooling, rely on the power to operate compressors and fans that forcibly cool the space. Such power is most often purchased from local usefulness and is generated by burning fossil fuels, which may have humiliating environmental effects. Passive cooling techniques do not require any strength and extent from simple, such as the shading of the building, to more complicated, such as the strategic design of the building. The use of such techniques can reduce or eliminate the need for driven cooling.
In warmer climate, especially dry areas, cooling is the primary problem for environmental buildings. There are two primary sources of undesirable heat that need to be solved to make the interior of the building comfortable for passengers. Direct sunlight on the building, especially shining on windows, is the main source of thermal gainFor Mobudovy St. The infiltration of warm air with cracks and slots and heat transfer through building materials also affects the internal temperature.
Generally, the simplest method of cooling the building is to prevent its first warming up. The strategic orientation of the building to minimize direct sun exposure, especially during the hottest part of the day, can significantly reduce its thermal load. After creating a structure, the use of sunscreen or awnings, as well as strategic landscaping, can prevent direct sun exposure. If direct exposure, such as the roof, cannot be avoided, reflective techniques can be used to prevent unwanted heating. For example, the roof can be covered with a reflective white coating to reduce the heating to large unprotected areas.
Passive cooling techniques can also prevent heating by reducing heat infiltration to tutera. Heat pIt flows from higher temperature areas, such as outdoors in summer, to a lower temperature area like a comfortable home interior. For example, sealing and adding weather around windows and doors reduces an area that unwanted hot air can enter the structure. Insulation is a material with high heat resistance. Adding insulation to the building prevents unwanted heat transfer from a warmer outdoor environment to the interior, which is kept cool.
Although large heating can be prevented, it is often not possible to maintain the structure at comfortable temperature only through avoiding itself. Other passive cooling strategies include cooling the convection structure. Convection is a process in which heat is transmitted from one place to the other by moving gas or liquid molecules.
Ventilation holes and windows strategically incorporated into the design of the building, for example, they can get to the hot air from the -Ds when drawing cold air to replace it. Warmer air is hovering morethan the colder air and naturally rises. The openings located near the ceiling on the side of the house from the predominant winds can help this warmer air escape the structure. To replace the cold air, the ventilation holes and windows can be placed low on the side of the house on the way of the predominant wind. Then it is a simple matter of opening holes and windows that encourage natural convection to cool the structure.
More complicated passive cooling methods can also be integrated into a building design such as Earth's cooling tubes. Cooling tubes use the ground cooling temperatures below the surface of the Earth to cool the structure. Buried under the ground, when they lead to the structure, the Earth's cooling tube attracts outdoor air to the building through the underground route. As they pass through these tubes, the air loses heat to a much cooler soil through which it travels on the way to the structure. Other passive cooling techniques are usually used in conjunction with ground pipes to set natural convection via STRUktura and ventilation of warmer air.
Although not suitable for use in all places, passive cooling is used in many areas for energy efficiency, resulting in cost savings and minimal environmental impact. In general, it is best for warmer climate and dry areas. Passive cooling can partly or generally avoid expenditure on cooling techniques that are driven by driven devices such as fans and compressors. This energy savings strategy can also benefit from the environment by reducing the need to burn non -renewable fuels that emit waste by -products harmful to the environment.