In Roman architecture, a tablinum (or tabulinum, from tabula, board, picture) was a room generally situated on one side of the atrium and opposite to the entrance; it opened in the rear onto the peristyle, with either a large window or only an anteroom or curtain. The walls were richly decorated with fresco pictures, and busts of the family were arranged on pedestals on the two sides of the room. [1]
The tablinum was the office in a Roman house, the father's centre for business, where he would receive his clients. It was originally the master bedroom, but later became the main office and reception room for the house master.
Takhtabush is the Arabic term for a tablinum. Like the ancient Roman tablinum, it opens onto a heavily shaded courtyard and, on the other side, a rear garden. Unlike the Roman tablinum, the garden side is closed with a mashrabiya lattice [2] : Ch. 6 (Roman tablinums may have had open-weave curtains[ citation needed ]).
If there is a wind, it tends to blow down into the windward court and up out of the leeward court. [2] : Ch. 6 A draft can, however, be driven by convection. One of the courts will generally be hotter than the other; which is hotter may vary. [2] : Ch. 6 [3] The courtyard is often pale, paved and narrow, and may be shaded by an awning and evaporatively cooled by a fountain. The garden is generally darker in colour, but evaporatively-cooled by evapotranspiration [ citation needed ]. The larger court will generally be less shaded by its own walls, and more exposed to hot winds; it may also be less sheltered by surrounding rooms. [2] : Ch. 6 [4] From both wind pressure and convection forces, the hottest air in the hotter court rises and escapes over the wall, pulling fresh air from the cooler courtyard through the takhtabush into the hotter court. [2] : Ch. 6 [4] The cooler court is replenished with air from the side (drawn through doors, evaporatively-cooled projecting mashrabiya bow windows, and small vents in the wall), or from above[ citation needed ], which cools by contact with masonry and evaporative cooling. The takhtabush thus has a strong cross-breeze from the cooler court. The breeze is at least partly driven by convection, and may also be driven by wind pressure and evaporative cooling, [2] : Ch. 6 [4] [3] so the gardens and courtyards are used as windcatchers.
Similar systems may be used to create a cool, breezy public roofed space between two public squares. [2] : Ch. 6
An autonomous building is a building designed to be operated independently from infrastructural support services such as the electric power grid, gas grid, municipal water systems, sewage treatment systems, storm drains, communication services, and in some cases, public roads.
Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity. When the cause of the convection is unspecified, convection due to the effects of thermal expansion and buoyancy can be assumed. Convection may also take place in soft solids or mixtures where particles can flow.
In passive solar building design, windows, walls, and floors are made to collect, store, reflect, and distribute solar energy, in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, unlike active solar heating systems, it does not involve the use of mechanical and electrical devices.
A courtyard or court is a circumscribed area, often surrounded by a building or complex, that is open to the sky.
An evaporative cooler is a device that cools air through the evaporation of water. Evaporative cooling differs from other air conditioning systems, which use vapor-compression or absorption refrigeration cycles. Evaporative cooling exploits the fact that water will absorb a relatively large amount of heat in order to evaporate. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor (evaporation). This can cool air using much less energy than refrigeration. In extremely dry climates, evaporative cooling of air has the added benefit of conditioning the air with more moisture for the comfort of building occupants.
A solar chimney – often referred to as a thermal chimney – is a way of improving the natural ventilation of buildings by using convection of air heated by passive solar energy. A simple description of a solar chimney is that of a vertical shaft utilizing solar energy to enhance the natural stack ventilation through a building.
Computer cooling is required to remove the waste heat produced by computer components, to keep components within permissible operating temperature limits. Components that are susceptible to temporary malfunction or permanent failure if overheated include integrated circuits such as central processing units (CPUs), chipsets, graphics cards, hard disk drives, and solid state drives.
A windcatcher, wind tower, or wind scoop is a traditional architectural element, originated in Iran (Persia), used to create cross ventilation and passive cooling in buildings. Windcatchers come in various designs, depending on whether local prevailing winds are unidirectional, bidirectional, or multidirectional, on how they change with altitude, on the daily temperature cycle, on humidity, and on how much dust needs to be removed. Despite the name, windcatchers can also function without wind.
A yakhchāl is an ancient type of ice house, which also made ice. They are primarily found in the Dasht-e Lut and Dasht-e-Kavir deserts, whose climates range from cold (BWk) to hot (BWh) desert regions.
Cavaedium or atrium are Latin names for the principal room of an ancient Roman house, which usually had a central opening in the roof (compluvium) and a rainwater pool (impluvium) beneath it. The cavaedium passively collected, filtered, stored, and cooled rainwater. It also daylit, passively cooled and passively ventilated the house.
A mashrabiya or mashrabiyya is an architectural element which is characteristic of traditional architecture in the Islamic world and beyond. It is a type of projecting oriel window enclosed with carved wood latticework located on the upper floors of a building, sometimes enhanced with stained glass. It was traditionally used to catch wind and for passive cooling. Jars and basins of water could be placed in it to cause evaporative cooling. It is most commonly used on the street side of the building; however, it may also be used internally on the sahn (courtyard) side. The term mashrabiya is sometimes used of similar lattices elsewhere, for instance in a takhtabush. It is similar to Indian jali.
A sahn, is a courtyard in Islamic architecture, especially the formal courtyard of a mosque. Most traditional mosques have a large central sahn, which is surrounded by a riwaq or arcade on all sides. In traditional Islamic design, residences and neighborhoods can have private sahn courtyards.
Passive cooling is a building design approach that focuses on heat gain control and heat dissipation in a building in order to improve the indoor thermal comfort with low or no energy consumption. This approach works either by preventing heat from entering the interior or by removing heat from the building.
Air conditioning, often abbreviated as A/C (US) or air con (UK), is the process of removing heat from an enclosed space to achieve a more comfortable interior environment and in some cases also strictly controlling the humidity of internal air. Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling. Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC). Heat pumps are similar in many ways to air conditioners, but use a reversing valve to allow them both to heat and to cool an enclosed space.
In meteorology, the different types of precipitation often include the character, formation, or phase of the precipitation which is falling to ground level. There are three distinct ways that precipitation can occur. Convective precipitation is generally more intense, and of shorter duration, than stratiform precipitation. Orographic precipitation occurs when moist air is forced upwards over rising terrain and condenses on the slope, such as a mountain.
A double envelope house is a passive solar house design which collects solar energy in a solarium and passively allows the warm air to circulate around the house between two sets of walls, a double building envelope. This design is from 1975 by Lee Porter Butler in the United States.
The House of Sallust was an elite residence (domus) in the ancient Roman city of Pompeii and among the most sumptuous of the city.
Cross ventilation is a natural phenomenon where wind, fresh air or a breeze enters upon an opening, such as a window, and flows directly through the space and exits through an opening on the opposite side of the building. This produces a cool stream of air and as well as a current across the room from the exposed area to the sheltered area. Other terms used for the effect include, cross-breeze, cross-draft, wind effect ventilation and cross-flow ventilation.
Architecture Of Saudi Arabia was not different in the pre-oil era during the early 1930s from what it was across the past centuries. Construction and building activities followed a simple and modest style back then, as there was a lack of specialized architects in the modern sense. Instead, native communities would erect their own structures manually through the efforts of builders using basic means and local materials in what came to be known as “traditional architecture.” Every region in Saudi Arabia was famous for its own brand of architecture that expressed its artistic taste. Building materials used at that time were sourced from the local environment, such as clay, rock, palm fronds, and wood. Similarly, the architectural styles passed on from generation to generation reflected each region’s climatic and environmental conditions.
A salsabil, also known as a shadirwan, is a type of fountain which maximizes the surface area of the water. It is used for evaporative cooling of buildings, cooling and aeration of drinking water, and ornament. The water may flow in a thin sheet or thin streams, often over a wavy surface with many little waterfalls. Its use extends from southern Spain through north Africa and the Middle East to northern India.
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