other uses Unreferenced date October 2009 wikt flue File Seven flue Stack 1834 .png thumb A seven flue chimney in a four storey Georgian house in London, showing alternative methods of sweeping A flue is a duct HVAC duct , pipe material pipe , or chimney for conveying exhaust gas es from a fireplace , furnace , water heater , boiler , or electrical generator generator to the outdoors. In the United States, they are also known as vents and for boilers as breeching for water heaters and modern furnaces. They usually operate by buoyancy , also known as the stack effect , or the combustion products may be induced via a Fan mechanical blower . As combustion products contain carbon monoxide and other dangerous compounds, proper draft , and admission of replacement air is imperative. Building code s, and other standards, regulate their materials, design, and installation. Heat retention Flues are designed to release noxious gases to the atmosphere, but they often have the disadvantage of releasing useful heat to the atmosphere. In some countries, wood fire flues are often built into a heat preserving construction within which the flue gases circulate over heat retaining bricks before release to the atmosphere. The heat retaining bricks are covered in a decorative material such as brick, tiles or stone. This flue gas circulation avoids the considerable heat loss to the chimney and outside air in conventional systems. The heat from the flue gases is absorbed quickly by the bricks and then released ... period. In this way, less fuel is used, and noxious emissions are reduced. Sometimes, the flue incorporates a second combustion chamber where combustibles in the flue gas are burnt a second time, reducing soot, noxious emissions and increasing overall efficiency. Other uses Organs The term flue is also ... boiler . Flue types Flue types include what do these mean? Balanced flue Power flue Die flue See also Flue gas stack Combustion Masonry heater Category Fireplaces Category Heating, ventilating ... more details
Wiktionary flueFlue may refer to Flue , a duct, pipe, or chimney for removing exhaust gases from a fireplace, furnace, water heater, boiler, or generator to the outdoors. Flue pipe , a type of organ pipe Part of a One flue harpoon , a type of Harpoon Parts of a Two flue harpoon , an earlier type of Harpoon beni Flue is a mountain in the Bernese Alps in Switzerland Tiejer Flue is a mountain in the Swiss Alps People named Flue Jason Von Flue born August 1 , 1975 in Fresno, California is a mixed martial artist Saint Nicholas of Fl e 1417 1487 , Swiss hermit and patron saint of Switzerland. disambig Category Surnames ... more details
Refimprove date March 2009 Flue gas is the gas exiting to the atmosphere via a flue , which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace , boiler or Boiler steam generator steam generator . Quite often, the flue gas refers to the combustion exhaust gas produced at power plants . Its composition depends on what is being burned, but it will usually consist of mostly nitrogen typically more than two thirds derived from the combustion air, carbon dioxide CO2 , and water vapor as well as excess oxygen also derived from the combustion air . It further contains a small percentage of a number of pollutants, such as particulate matter , carbon monoxide , nitrogen oxides , and sulfur oxides . Flue gas scrubbing At power plants, flue gas is often treated with a series of chemical processes and scrubber s, which remove pollutants. Electrostatic Precipitator Electrostatic precipitators or Dust collector Fabric filters fabric filters remove particulate matter and flue gas desulfurization captures the sulfur dioxide produced by burning fossil fuels, particularly coal. Nitrogen oxides are treated either by modifications to the combustion process to prevent their formation, or by high temperature or catalytic reaction with ammonia or urea . In either case, the aim is to produce nitrogen gas, rather than nitrogen oxides. In the US, there is a rapid deployment of technologies to remove mercury element mercury from flue gas typically by adsorption on sorbents or by capture in inert solids as part of the flue gas desulfurization product. Such scrubbing can lead to meaningful recovery of sulfur for further industrial use. C.Michael Hogan. 2011 Technologies based on regenerative capture by amines for the removal of CO2 from flue gas have been deployed to provide ... Combustion Emission standard Exhaust gas Flue gas emissions from fossil fuel combustion Flue gas stacks Flue gas desulfurization often referred to as FGD Integrated gasification combined cycle often referred ... more details
Infobox mountain name Tiejer Flue photo photo caption elevation m 2781 elevation ref prominence map Switzerland location SUI range Plessur Range lat d 46 lat m 46 lat s 51.7 lat NS N long d 9 long m 44 long s 05.7 long EW E region CH first ascent easiest route Tiejer Flue is a mountain in the Plessur Range Swiss Alps Alps , located near Arosa in the canton of Graub nden , Switzerland . External links http www.jo albis.ch index.php?menu id 7 List of mountains above 2000 m in Switzerland with coordinates Category Mountains of the Alps Category Mountains of Switzerland Graub nden geo stub ... more details
Refimprove date October 2009 Image Schuke sofia principal.JPG thumb right 300px Four flue pipes of a diapason rank. A flue pipe also referred to as a labial pipe is an organ pipe that produces sound through ... referred to as wind is driven down a flue and against a sharp lip called a Labium , causing the column ... . Thus, there are no moving parts in a flue pipe. This is in contrast to reed pipe s, which are driven by a beating Reed music reed , as in a clarinet . Flue pipes are common components of pipe organ s. The majority of organ pipe s are flue pipes, and they produce the foundation sound of the organ ... is affected by the size and shape of the pipes, as well as the materials used. Stop Flue pipes include ... class. Construction Image Flue pipe cross section.png thumb right 150px Longitudinal section of a typical flue pipe mouth and foot. br 1. Pipe body or resonator br 2. Upper lip br 3. Languid br 4. Lower lip br 5. Foot br 6. Toe hole Flue pipes may be metallic or wooden. Metal pipes are usually circular ... do exist. A flue pipe has two major parts, a foot and a resonator. The foot is the bottom portion ... of the foot does not affect the pipe s pitch, so organ builders vary the foot lengths of their flue ... s volume all determine the fundamental pitch of the flue pipe. The conical taper of the pipe determines ... University Press , p. 31 41. ISBN 0 521 57584 2 ref See Wind Instrument . Tonal groups Flue pipes ... flue pipe scaling , flutes are generally the widest flue pipes and produce the tone with the most fundamental among flue pipes. They are so named because they sound like the flute though most flute ... are the smallest scaled flue pipes. This produces a bright sound that is rich in upper partials. String ... humana Vox Humana , which is a soft reed stop with a short resonator . Labial reeds Some flue ... oboe. Tonal characteristics The diameter of a flue pipe directly affects its tone. When comparing pipes ... flue pipe scaling scale of the pipe i.e., wide scaled, normal scaled, or narrow scaled. As a pipe ... more details
Image Early two flue.png right thumb 200px An engraving showing a two flue harpoon used in whaling The two flue harpoon or two flue iron which, together with the one flue harpoon , were known as common harpoons is a type of harpoon used in whaling for at least 1000 years. It appears in works of art dating back to the 14th century. In the early 19th century the design was modified, and the one flue harpoon was created. By removing half of the point, the chance of the point cutting its way back out of the whale was greatly reduced. See also Toggling harpoon External links http www.whalecraft.net Two 20Flue.html Two flue irons history Category Harpoons ... more details
The one flue harpoon or one flue iron sometimes single instead of one is used is a type of harpoon used in whaling after its introduction in the early 19th century when it replaced the two flue harpoon . Due to the Asymmetry asymmetric design of the head for which it is named, the one flue harpoon was less likely to cut its way out of the whale meat and blubber , and was therefore more successful in whaling. In the mid 19th century the one flue harpoon was replaced by the toggling harpoon , which was an iron version of the ancient design used in the Arctic by the native whale hunters there. The toggling iron harpoon was even more successful and rapidly phased out the use of the common harpoon a term which refers to either the one or two flue harpoon . External links http www.whalecraft.net Single Flue.html anchor17097 Single flue harpoon history Category Harpoons ... more details
Flue gas condensation is a process, where flue gas is cooled below its water dew point and the heat released by the resulting condensation of water is recovered as low temperature heat. Cooling of the flue gas can be performed either directly with a heat exchanger or indirectly via a condensing scrubber . The condensation of water releases more than convert 2 GJ per ton of condensed water, which can be recovered in the cooler for e.g. district heating purposes. Excess condensed water must continuously be removed from the process. The downstream gas is saturated with water, so even though significant amounts of water may have been removed from the cooled gas, it is likely to leave a visible stack plume of water vapor. The heat recovery potential of flue gas condensation is highest for fuels with a high moisture content e.g. biomass and municipal waste , and where heat is useful at the lowest possible temperatures. Thus flue gas condensation is normally implemented at biomass fired boilers and waste incinerators connected district heating grids with relatively low return temperatures below approximately convert 55 C . See also Scrubber Wet scrubber Heat exchanger District heating References reflist External links http www.gmab.se eng rokgaskondensering.htm On Flue gas Condensation by G taverken Milj AB br DEFAULTSORT Flue Gas Condensation Category Scrubbers Category Industrial processes Category Heat exchangers energy stub nl Rookgascondensor sv R kgaskondensering ... more details
File GRES 2.jpg thumb right 180px Flue gas stack at GRES 2 Power Station in Ekibastusz , Kazakhstan The image ... Diagram of 25 tallest flue gas stacks worldwide ref see also flue gas A flue gas stack is a type ... called flue gas es are exhausted to the outside air. Flue gases are produced when coal, oil, natural ... plant s steam generating boiler, or other large combustion device. Flue gas is usually composed of carbon ... , carbon monoxide , nitrogen oxides and sulfur oxides . The flue gas stacks are often quite tall, up ... policy and environmental regulation. When the flue gases are exhausted from stoves, ovens ... buildings and small commercial enterprises, their flue gas stacks are referred to as chimneys. History ... to as flue gas stacks were built into the walls of the furnace much like a domestic chimney. The first ... flue s associated with smelting lead . The powerful association between industrial chimneys and the characteristic ... by the need to disperse combustion flue gases to comply with governmental air pollution control regulations. Flue gas stack draft Image Chimney effect.svg thumb 180px right The stack effect ... flue gases inside the flue gas stacks are much hotter than the ambient outside air and therefore less dense than the ambient air. That causes the bottom of the vertical column of hot flue gas to have ... zone and also moves the flue gas up and out of the chimney. That movement or flow of combustion air and flue gas is called natural draft , HVAC Natural ventilation natural ventilation , chimney ... provides an approximation of the pressure difference, P , between the bottom and the top of the flue ... right h align left height of the flue gas stack, in m align right T sub o sub align left absolute ... of the flue gas inside the stack, in K The above equation is an approximation because it assumes that the molar mass of the flue gas and the outside air are equal and that the pressure drop through the flue gas stack is quite small. Both assumptions are fairly good but not exactly accurate. The flue ... more details
Flue cured tobacco is a type of cigarette tobacco that along with burley tobacco account for more than 90 of U.S. tobacco production. Flue cured farming is centered in North Carolina . Production was limited by national marketing quota s and acreage allotment s, and was eligible for nonrecourse price support loans until 2005, when the quota buyout program ended these programs P.L. 108 357, Title VI . See also Tobacco Curing References CRS article Report for Congress Agriculture A Glossary of Terms, Programs, and Laws, 2005 Edition url http ncseonline.org nle crsreports 05jun 97 905.pdf author Jasper Womach Category United States Department of Agriculture Category Tobacco in the United States ... more details
Image Air .pollution 1.jpg thumb right 275px Before flue gas desulfurization was installed, the emissions ... is one of the elements forming acid rain . Tall flue gas stack s disperse emissions by diluting the pollutants in ambient air and transporting them to other regions. Flue gas desulfurization FGD or flue gas desulphurization is a technology used to remove sulfur dioxide chem SO 2 from the exhaust Flue gas emissions from fossil fuel combustion flue gases of fossil fuel power plant s, and chemical ... from flue gases by a variety of methods. The below is among the common methods used Wet scrubber ... process recovering sulfur in the form of commercial quality sulfuric acid SNOX Flue gas desulphurisation SNOX Flue gas desulfurization removes sulfur dioxide, nitrogen oxides and particulates from flue ... percent or more of the chem SO 2 in the flue gases. History Methods of removing sulphur dioxide from boiler and furnace exhaust gases have been studied for over 150 years. Early ideas for flue gas desulphurization ... Biondo Biondo, S.J. and Marten,J.C., A History of Flue Gas Desulphurization Systems Since 1850 , Journal ... S., Flue Gas Desulphurization Technologies for Coal Fired Power Plants , The Babcock & Wilcox Company .... 2, Nos. 1 2, 2004 ref ref Beychok, Milton R., Comparative economics of advanced regenerable flue ... present in the flue gas . However, there are circumstances, under which such reaction may not occur. When flue gas has too much oxygen, the chem SO 2 further oxidizes into sulfur trioxide chem SO 3 ... SO 3 . Sulfuric acid mist is often the cause of the blue haze that often appears as the flue gas ... removal efficiency. In wet scrubbing systems, the flue gas normally passes first through a fly ash removal ..., and then the flue gas passes through a particulate control device. Another important design consideration associated with wet FGD systems is that the flue gas exiting the absorber is saturated ... solid or solution File Flue gas desulfurization unit EN.svg thumb 300px Schematic design of the absorber ... more details
BLP sources date August 2011 No footnotes date August 2011 Infobox martial artist name Jason Von Flue other names Livewire image Jason Von Flue.png image size 200px alt caption birth name birth date birth date and age year 1975 month 8 day 1 birth place Kerman, California , United States death date death place death cause residence nationality People of the United States American height height ft 6 in 0 weight convert 170 lb kg st abbr on weight class Welterweight MMA Welterweight br Middleweight MMA Middleweight reach style Brazilian Jiu Jitsu , Brawling stance fighting out of San Luis Obispo, California team Greg Jackson MMA trainer Jackson s Submission Fighting rank years active mma kowin ... updated Jason Lee Von Flue born August 1, 1975 is a mixed martial arts mixed martial artist ... control, a technique now commonly referred to as a Von Flue choke. In his second UFC match at UFC Ultimate ... via decision. More recently, Von Flue lost by submission to Joe Riggs at UFC Fight Night . Following a win over Eric Wray in October, Von Flue lost to Cung Le due to a cut at Strikeforce Triple Threat on December 8, 2006. Von Flue s last loss was to Kyle Pimentel who he has recently defeated by knockout ... Submission von flue choke UFC Ultimate Fight Night 3 dts 2006 January 16 align center 3 align center ..., Nevada , US advanced to TUF 2 semi finals end External links Sherdog id 549 name Jason Von Flue http www.ufc.com index.cfm?fa fighter.detail&pid 419 Von Flue s UFC Profile http www.imdb.com name nm2082119 Von Flue s IMDB Page http www.mynetspot.org jasonvonflue Von Flue s OFFICIAL myNetSpot http www.myspace.com livewire187 Von Flue s OFFICIAL MySpace References reflist The Ultimate Fighter 2 Persondata Metadata see Wikipedia Persondata . NAME Flue, Jason Von ALTERNATIVE NAMES SHORT DESCRIPTION ... DEFAULTSORT Flue, Jason Von Category American mixed martial artists Von Flue, Jason Category Living people Von Flue, Jason Category Welterweight mixed martial artists Category 1975 births Category ... more details
Unreferenced date October 2009 The subject of this article is technical in nature and requires an understanding of organ terminology. This is in the process of being rectified. Many of the terms used here are defined in the pipe organ article. Scaling is the term used to describe the ratio of an organ pipe s length to its diameter . The scaling of a pipe is a major influence on its timbre . Reed pipe s are scaled according to different formulas than are flue pipe s. In general, the larger the diameter of a given pipe at a given pitch music pitch , the fuller and more Harmonic series music fundamental the sound becomes. The system most commonly used to fully document and describe scaling was devised by T pfer . In this system, the diameter of a given note is compared with a reference scale by means of half tone deviations larger or smaller indicated by the abbreviation ht . This reference scale is called Normalmensur . Normalmensur is a rank of pipes based on an internal diameter of 155.5mm at 8&prime C the lowest note of the modern organ compass and a mouth width which is one quarter of the circumference of such a pipe. The scale provides for a reduction in diameter of the pipes by half at every succeeding 17th pipe. This system can be used to produce Normalmensur variation tables or line graphs for the analysis of existing ranks or the design of new ranks. The following is a list of representative 8&prime stops in order of increasing diameter and, therefore, increasing fundamental tone at middle C with respect to Normalmensur, which is listed in the middle. Deviations from Normalmensur are provided after the pipe measurement in brackets. Viole d orchestre thin, mordant string stop 35.6 mm 10 ht Salicional broader toned, non imitative string stop 40.6 mm 7 ht Violin diapason thin toned principal stop 46.2 mm 4 ht Principal typical mid scale principal stop 50.4 mm 2 ht Normalmensur 54.9 mm 0 ht Open diapason broader toned principal stop 57.4& ... more details
Image Air .pollution 1.jpg thumb right 275px Before flue gas desulfurization was installed, the emissions from this power plant in New Mexico contained excessive amounts of sulfur dioxide . Flue gas emissions from fossil fuel combustion refers to the combustion product gas resulting from the burning of fossil fuel s. ref name EPA http www.epa.gov ttn chief ap42 index.html Compilation of Air Pollutant Emission Factors ref Most fossil fuels are combusted with ambient air as differentiated from combustion ... non combustible, the largest part of the flue gas from most fossil fuel combustion is uncombusted nitrogen. The next largest part of the flue gas is carbon dioxide CO sub 2 sub , which can be as much as 10 25 volume percent or more of the flue gas. This is closely followed in volume by water .... Much of the smoke seen pouring from flue gas stack s is this water vapor forming a cloud as it contacts cool air. A typical flue gas from the combustion of fossil fuels contains very small amounts ... liquid droplets which give flue gases their smoky appearance. The steam generators in large power ... of flue gas to the ambient atmosphere. The table below presents the total amounts of flue gas typically ... Conversions and Formulas ref It is of interest to note that the total amount of flue gas generated by coal combustion is only 10 percent higher than the flue gas generated by natural gas combustion. class wikitable style text align center width 88 Exhaust flue gas generated by combustion of fossil fuels ... combustion air, align right 12 align right 15 align right 20 align left Wet exhaust flue gas align ... 29.0 align right 29.5 align left Dry exhaust flue gas align left Amount of dry exhaust gas, m GJ of fuel ... also AP 42 Compilation of Air Pollutant Emission Factors Emission standard Flue gas stack Flue gas Flue gas desulfurization Gas stoichiometry Stoichiometry External links Article on http www.sodimate inc.com Flue Gas treatment.aspx Flue Gas Treatment including desulfurization and the removal of hydrogen ... more details
Orphan date February 2009 The Flageolet is an organ stop belonging to the Flue pipe Flutes flute group of flue pipes. It is usually found in 2 feet pitch, and more rarely 1 feet pitch. The tone is generally soft in character. musical instrument stub Category Organ stops Category Flute type Organ stops ... more details
by mixing with recycled flue gas , or staged combustion . The recycled flue gas can also be used to carry ... combustion produces approximately 75 less flue gas than air fueled combustion and produces exhaust .... The justification for using oxy fuel is to produce a CO sub 2 sub rich flue gas ready for carbon ... fired plants. Among these are The mass and volume of the flue gas are reduced by approximately 75 . Because the flue gas volume is reduced, less heat is lost in the flue gas. The size of the flue gas treatment equipment can be reduced by 75 . The flue gas is primarily CO sub 2 sub , suitable for sequestration. The concentration of pollutants in the flue gas is higher, making separation easier. Most of the flue gases are condensable this makes compression separation possible. Heat of condensation can be captured and reused rather than lost in the flue gas. Because nitrogen from air is not allowed .... However, oxy fuel is a viable alternative to removing CO sub 2 sub from the flue gas from a conventional ... flame temperatures for air fuel combustion unless heat is regenerated between the flue stream and the incoming ... brick ducts filled with brick arranged in a checkerboard pattern to capture heat as flue gas exits the furnace. When the flue duct is thoroughly heated, air flow is reversed and the flue duct ... than can be attained with air fuel only. Two sets of regenerative flue ducts allowed for the air ... more details
wiktionary diapason Diapason may refer to Diapason interval , a just interval in Pythagorean tuning Diapason pipe organ , a tonal grouping of the flue pipes of a pipe organ Diapason magazine , a French classical music magazine disambig fr Diapason homonymie nl Diapason pl Zakres ru uk ... more details
Infobox mountain name Ebnefluh photo Gletscherhorn and Aletschhorn.jpg photo caption Gletscherhorn centre and Ebnefluh far right elevation m 3962 elevation ref prominence m 196 prominence ref ref Swisstopo maps ref parent peak Gletscherhorn map Switzerland relief map caption Location in Switzerland location SUI range Bernese Alps lat d 46 lat m 30 lat s 29 lat NS N long d 7 long m 57 long s 11 long EW E region CH first ascent easiest route From Hollandia Hut The Ebnefluh also known as the beni Flue and the Ebenefluh 3,962 m is a mountain in the Bernese Alps in Switzerland . It lies towards the eastern end of the Lauterbrunnen Wall . References reflist External links http www.summitpost.org mountain rock 150648 ebenefluh.html The Ebnefluh on SummitPost commonscat Ebnefluh Jungfrau Aletsch Protected Area Category Bernese Alps Category Mountains of Switzerland Category Mountains of the Alps Category Alpine Three thousanders Berne geo stub de beni Flue it beni Flue nn beni Flue pnb pl Ebnefluh ... more details
lang de Waldfl te wood flute may refer to Flue pipe , the widest scale of tubes producing notes on a pipe organ. Project Waldfl te Project Waldfl te , a 1900 era Gray & Davison organ adapted for MIDI control in Edinburgh disambiguation ... more details
Unreferenced date February 2008 Inert gas generator IGG refers to machinery on board marine product tanker ship tanker s. Inert gas generators consist distinctively of a burning and cooling chamber. atmosphere Atmospheric air is burned so that it contains less than 5 oxygen , thereby creating inert gas . This gas is then delivered to cargo tanks to prevent explosion of flammability flammable cargo . This generator is sometimes confused with flue gas systems , which draw inert gas from the boiler boiler system s of the ship. Flue gas systems do not have a burner but only clean and measure the air before delivering it to the cargo hold. Category Tankers ... more details
27764 von Fl e is a main belt asteroid with an orbital period of 1816.9666529 days 4.97 years . ref name JP Small body Database Browser cite web url http ssd.jpl.nasa.gov sbdb.cgi?sstr 27764 title JPL Small Body Database Browser accessdate 2008 05 18 publisher NASA ref The asteroid was discovered on September 10, 1991. References Reflist DEFAULTSORT Von Flue Category Main Belt asteroids Category Astronomical objects discovered in 1991 Beltasteroid stub it 27764 von Fl e pl 27764 von Fl e pt 27764 von Flue yo 27764 von Fl e ... more details
saved book title Air Quality Monitoring subtitle General Subjects cover image GRES 2.jpg cover color Air Quality Monitoring Ambient Air Quality Air pollution Air Pollution Air quality National Ambient Air Quality Standards Air pollution in British Columbia Localized Example British Columbia Emissions Dust collector Dust Collector Scrubber Wet scrubber Wet Scrubber Flue gas desulfurization Flue Gas Desulfurization Pollutants Sulfur dioxide SO2 Sulfer Dioxide NOx NOx Nitrogen Oxides Nitrogen oxide NOy Nitrogen Oxides Nitrogen dioxide NO2 Nitrogen Dioxide Carbon monoxide CO Carbon Monoxide Carbon dioxide CO2 Carbon Dioxide Volatile organic compound VOCs Volatile Organic Compounds Particulates PM Particulate Matter Ammonia NH3 Ammonia Mercury element Hg Mercury ... more details
of emissions to be addressed. The SNOX technology is especially suitable for cleaning flue gases ... to convert the NOx in the flue gas into nitrogen and the SOx into concentrated sulfuric acid of commercial ... with the flue gases, other sulfurous waste streams from a refinery can be treated, such as H sub ... br br File SNOXandCLAUS.JPG br br File SNOXandWSA.JPG Flue gas desulfurization The SNOX process can be applied for treatment of flue gases from combustion of primarily high sulfur fuels in power ... sulfur compounds and nitrogen oxides. The first full scale plant treating 1,000,000 Nm h flue gas ... treats 1,200,000 Nm h flue gas from four petroleum coke fired boilers at a refinery in Sicily, Italy . The process catalytically reduces both the SO sub 2 sub and the NO sub x sub in flue gases ... fuel such as petroleum coke can be used for power generation, while the flue gas is cleaned in SNOX ... the desired amount of sulfuric acid. See also Flue gas desulfurization References See Wikipedia ... more details
Sesquialtera may mean An organ stop of organ flue pipe scaling principal scale comprising ranks at 2 frac 2 3 and 1 frac 3 5 . ref Sesquialtera. In http www.organstops.org s Sesquialtera.html Encyclopedia of Organ Stops . ref The ratio 3 2, used in medieval music theory . The plural of Superparticular number sesquialterum . References references Category Organ stops de Register Orgel Gemischte Stimmen it Sesquialtera sv Sesquialtera ... more details
Stack effect is the movement of air into and out of buildings, chimneys , flue gas stacks , or other containers, and is driven by buoyancy . Buoyancy occurs due to a difference in indoor to outdoor air density resulting from temperature and moisture differences. The result is either a positive or negative buoyancy force . The greater the thermal difference and the height of the structure, the greater the buoyancy force, and thus the stack effect. The stack effect is also referred to as the chimney effect , and it helps drive natural ventilation and Infiltration HVAC infiltration . Stack effect in buildings Since buildings are not totally sealed at the very minimum, there is always a ground level entrance , the stack effect will cause air infiltration. During the heating season, the warmer indoor ... to prevent the spread of smoke. Stack effect in flue gas stacks and chimneys Image Chimney ... pressure. The stack effect in industrial flue gas stacks is similar to that in buildings, except that it involves hot flue gases having large temperature differences with the ambient outside air. Furthermore, an industrial flue gas stack typically provides little obstruction for the flue gas along .... Large temperature differences between the outside air and the flue gases can create a strong ... rise buildings. For flue gas stacks and chimneys, where air is on the outside and combustion flue gases are on the inside, the equations will only provide an approximation and h is the height of the flue ... effect in high rise buildings. For flue gas stacks or chimneys, where air is on the outside and combustion flue gases are on the inside, the equation will only provide an approximation. Also, A is the cross sectional flow area and h is the height of the flue gas stack or chimney. math Q C A sqrt ... situations, the resistance is primarily imposed by the flue stack itself. In these cases ... equation predicting Q to be invariant with respect to the flue height. See also Chimney Flue gas ... more details
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