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Displacement ventilation is best suited for taller spaces (higher than 3 meters [10 feet]). [2] Standard mixing ventilation may be better suited for smaller spaces where air quality is not as great a concern, such as single-occupant offices, and where the room height is not tall (e.g., lower than 2.3 meters [7.5 feet]).
UFAD systems use an underfloor supply plenum located between the structural concrete slab and a raised floor system to supply conditioned air to supply outlets (usually floor diffusers), located at or near floor level within the occupied space. Air returns from the room at ceiling level or the maximum allowable height above the occupied zone.
Displacement ventilation systems supply air directly to the occupied zone.The air is supplied at low velocities to cause minimal induction and mixing. This system is used for ventilation and cooling of large high spaces, such as auditorium and atria, where energy may be saved if only the occupied zone is treated rather than trying to control the conditions in the entire space.
Until 1985, subscribers' telephone numbers in Singapore were five and six digits. Five digits were introduced in 1960s, whereas 5-digit and 6-digit phone numbers were introduced in 1960s as fixed lines grew, but in that year, these changed to seven digits as the introduction of new towns arose (Tampines, Jurong East, Bukit Batok, Yishun and Hougang) and a large number of new numbers were required.
Using the 6-digit postal code to look up the Central Public Lirbary in the OneMap application. Due to Singapore being a small city-state and most buildings having singular, dedicated delivery points, the postal code can be used as a succinct and precise identifier of buildings in Singapore, akin to a geocode.
This is a list of places in Singapore based on the planning areas and their constituent subzones as designated by the Urban Redevelopment Authority (URA). Based on the latest URA Master Plan in 2019, the country is divided into 5 regions , which are further subdivided into 55 planning areas , and finally subdivided into a total of 332 subzones.
Jewel was conceived to maintain Changi Airport's status as a major aviation hub in the Asia-Pacific. [9] It was first mentioned by then Prime Minister Lee Hsien Loong in his National Day Rally speech in 2013 as part of Changi Airport's long-term plans to double its capacity by the mid-2020s and "create more opportunities for Singapore and Singaporeans".
Diffuser (sewage), an aerating device for sewage and industrial waste water treatments; Diffuser (thermodynamics), a device that controls the characteristics of a fluid at the entrance to a thermodynamic open system; Aroma lamp (sometimes called an aromatherapy diffuser or reed diffuser), used to disperse essential oils into the surroundings