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ultra low particulate air wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 materials used in ulpa filters 2 method of functioning 3 specifications 4 see also 5 references 6 external links toggle the table of contents ultra low particulate air 8 languages العربية deutsch español فارسی 日本語 한국어 svenska 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia type of air filter ulpa redirects here for the model law see uniform limited partnership act ultra low particulate air ulpa is a type of air filter a ulpa filter can remove from the air at least 99 999 of dust pollen mold bacteria and any airborne particles with a minimum particle penetration size of 120 nanometres 0 12 μm ultrafine particles a ulpa filter can remove to a large extent but not 100 oil smoke tobacco smoke rosin smoke smog and insecticide dust 1 it can also remove carbon black to some extent some fan filter units incorporate ulpa filters the en 1822 and iso 29463 standards may be used to rate ulpa filters 2 3 materials used in ulpa filters edit both high efficiency particulate air hepa and ulpa filter media have similar designs the filter media is like an enormous web of randomly arranged fibres when air passes through this dense web the solid particles get attached to the fibres and thus eliminated from the air porosity is one of the key considerations of these fibres lower porosity while decreasing the speed of filtration increases the quality of filtered air this parameter is measured in pores per linear inch method of functioning edit physically blocking particles with a filter called sieving cannot remove smaller sized particles the cleaning process based on the particle size of the pollutant is based on four techniques 1 sieving diffusion inertial impaction interception a number of recommended practices have been written on testing these filters including 4 iest rp cc001 hepa and ulpa filters iest rp cc007 testing ulpa filters iest rp cc022 testing hepa and ulpa filter media and iest rp cc034 hepa and ulpa filter leak tests specifications edit efficiency en 1822 iso 29463 retention averaged retention spot ulpa u15 iso 55 u iso 60 u 99 9995 99 9999 99 9975 99 9995 u16 iso 65 u iso 70 u 99 99995 99 99999 99 99975 99 9999 u17 iso 75 u 99 999995 99 9999 see also the different classes for air filters for comparison see also edit minimum efficiency reporting value merv high efficiency particulate air hepa microparticle performance rating mpr references edit 1 2 david a john air distribution design hepa or ulpa filtration air distribution design hepa or ulpa filtration ashrae journal vol 55 no 5 may 2013 xu zhonglin october 10 2013 fundamentals of air cleaning technology and its application in cleanrooms springer science business media isbn 978 3 642 39374 7 via google books holah john lelieveld huub l m moerman frank may 25 2023 hygienic design of food factories woodhead publishing isbn 978 0 12 822619 3 via google books iest recommended practices iest 2007 12 03 retrieved 2008 01 14 external links edit ulpa filter efficiency chart sentry air systems european standard for epa hepa ulpa filters en 1822 p 6 archived 2024 05 17 at the wayback machine en 1822 the standard that greatly impacted the european cleanrooms market ulpa filter designs and how it clears the air archived 2020 06 12 at the wayback machine v t e heating ventilation and air conditioning fundamental concepts air changes per hour ach bake out building envelope convection dilution domestic energy consumption enthalpy fluid dynamics gas compressor heat pump and refrigeration cycle heat transfer humidity infiltration latent heat noise control outgassing particulates psychrometrics sensible heat stack effect thermal comfort thermal destratification thermal mass thermodynamics vapour pressure of water technology absorption compression heat pump absorption refrigerator air barrier air conditioning antifreeze automobile air conditioning autonomous building building insulation materials central heating central solar heating chilled beam chilled water constant air volume cav coolant cross ventilation dedicated outdoor air system doas deep water source cooling demand controlled ventilation dcv displacement ventilation district cooling district heating electric heating energy recovery ventilation erv firestop forced air forced air gas free cooling heat recovery ventilation hrv hybrid heat hydronics ice storage air conditioning kitchen ventilation mixed mode ventilation microgeneration passive cooling passive daytime radiative cooling passive house passive ventilation radiant heating and cooling radiant cooling radiant heating radon mitigation raised floor refrigeration renewable heat room air distribution solar air heat solar combisystem solar cooling solar heating thermal insulation thermosiphon underfloor air distribution underfloor heating vapor barrier vapor compression refrigeration vcrs variable air volume vav variable refrigerant flow vrf ventilation water heat recycling components air conditioner inverter air door air filter air handler air ionizer air mixing plenum air purifier air source heat pump attic fan automatic balancing valve back boiler barrier pipe blast damper boiler centrifugal fan ceramic heater chiller condensate pump condenser condensing boiler convection heater compressor cooling tower damper dehumidifier duct economizer electrostatic precipitator evaporative cooler evaporator exhaust hood expansion tank fan fan coil unit fan filter unit fan heater fire damper fireplace fireplace insert freeze stat flue freon fume hood furnace gas compressor gas heater gasoline heater grease duct grille ground coupled heat exchanger ground source heat pump heat exchanger heat pipe heat pump heating film heating system hepa high efficiency glandless circulating pump high pressure cut off switch humidifier infrared heater inverter compressor kerosene heater louver mechanical room oil heater packaged terminal air conditioner plenum space pressurisation ductwork process duct work radiator radiator reflector recuperator refrigerant register reversing valve run around coil sail switch scroll compressor solar chimney solar assisted heat pump space heater smoke canopy smoke damper smoke exhaust ductwork thermal expansion valve thermal wheel thermostatic radiator valve trickle vent trombe wall turboswing turning vanes ultra low particulate air ulpa whole house fan windcatcher wood burning stove zone valve measurement and control air flow meter aquastat bacnet blower door building automation carbon dioxide sensor clean air delivery rate cadr control valve gas detector home energy monitor humidistat hvac control system infrared thermometer intelligent buildings lonworks minimum efficiency reporting value merv normal temperature and pressure ntp opentherm programmable communicating thermostat programmable thermostat psychrometrics room temperature smart thermostat standard temperature and pressure stp thermographic camera thermostat thermostatic radiator valve professions trades and services architectural acoustics architectural engineering architectural technologist building services engineering building information modeling bim deep energy retrofit duct cleaning duct leakage testing environmental engineering hydronic balancing kitchen exhaust cleaning mechanical engineering mechanical electrical and plumbing mold growth assessment and remediation refrigerant reclamation testing adjusting balancing industry organizations ahri amca ashrae astm international bre bsria cibse institute of refrigeration iir leed smacna umc health and safety indoor air quality iaq passive smoking sick building syndrome sbs volatile organic compound voc see also ashrae handbook building science fireproofing glossary of hvac terms warm spaces world refrigeration day template fire protection template home automation template plumbing template solar energy this technology related article is a stub you can help wikipedia by adding missing information v t e retrieved from https en wikipedia org w index php title ultra low_particulate_air oldid 1340681176 categories filters cleanroom technology technology stubs hidden categories articles with short description short description matches wikidata webarchive template wayback links all stub articles this 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