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Advanced Methods for Air Distribution in Occupied Spaces for Reduced Risk from Air-Borne Diseases and Improved Air Quality

Authors
Publisher
Technical University of Denmark, Department of Civil Engineering
Publication Date
Keywords
  • Denne Ph
  • D
  • Afhandling BeskæFtiger Sig Med Nye Avancerede Metoder Til Luftfordeling I Lokaler
  • Formålet Er At Forbedre Den Inhalerede Luftkvalitet Og Mindske Risikoen Fra Luftbåren Krydsinfekti
  • <Br/>De Eksisterende Ventilationsstrategier Nu Til Dags Er Ikke I Stand Til At Yde TilstræKkelig Re
  • Det Er Tydeligt At Nye Avancerede Metoder Er NøDvendige For At Forbedre Den NuvæRende Situation
  • Emnet Er SæRligt Vigtigt På Grund Af SpøRgsmålet Om Energiforbrug Samt Den øGede Mulighed For T
  • Truslen Fra Mulige Biologiske Terrorangreb I Det Seneste årti GøR Emnet Meget Vigtigt
  • <Br/>Hidtil Har De Eksisterende Metoder Til IndendøRs Luftrensning Bygget På Flere<Br/>GrundlæGge
  • Filtrering Og Ultraviolet BakteriedræBende Bestrålingen (Ultra Violet Germicidal Irradiation – U
  • Fortynding Benytter Ventilation Ved HøJe StrøMningshastigheder Til At Reducere Koncentrationen Af
  • Der Ikke Forringer Luftkvaliteten Eller Er Til Skade For De Mennesker Der Opholder Sig I Bygningen
  • Fortynding Er Også Forbundet Med Visse EnergimæSsige BegræNsninger
  • Filtrering Og Uvgi Er Effektive Til At Beskytte Personer
  • Forudsat At Kilderne Er Placeret UdendøRs
  • Men Disse Metoder Er Ikke SæRlig Effektiv
  • Hvis De Forurenende Kilder Er IndendøRs
  • IsæR Hvis Kilden Er En Syg Person
  • <Br/>Afhandlingen Fokuserer På To Metoder Der NedsæTter Risikoen Smittespredning Af Luftbårne Syg
  • Og Ved At Beskytte Medicinsk Personale
  • Patienter Og BesøGende Fra Krydsinfektion I Sygehusafdelinger
  • <Br/>Den FøRste Del Af Afhandlingen Fokuserer På Forbedring Af Inhaleret Luftkvalitet Og Mindskels
  • Princippet er opkaldt personlig ventilation(PV) og anvender kontrol med luftstrømmes interaktion t�
  • To Nye Kontrolmetoder
  • Nemlig Kontrol Over Det Frie<Br/>Konvektive Lag Omkring Den Menneskelige Krop Og Kontrol Af Det Pers
  • Når De Anvendes Til Forskellige Pv Design
  • Den FøRste Metode Har Til Formål At Reducere Styrken Af Det Frie Konvektive Lag Via Blokering Elle
  • Hvilket Dermed MuliggøR IndtræNgen Af LuftstrøMninger Fra Pv Med Lav Hastighed (Low Flow Rate)
  • Den Anden Metode Går Ud På At Kontrollere Måden Hvorpå Pv StrøMmen Leveres
  • Så Denne Er Mindre Påvirket Af<Br/>StrøMmeningssamspillet Omkring Den Menneskelige Krop: Ved At N
  • Begge Metoder Bidrog I HøJ Grad Til At øGe Effektiviteten Af De Anvendte Pv Systemer Med Hensyn Ti
  • Der Leveres I Indåndingszonen I Forhold Til Da Pv Blev Anvendt Uden Nogen Form For Kontrol
  • Disse Metoder Viser Også Stort Potentiale For Energibesparelser
  • Som FøLge Af Nedsat Pv StrøMningshastighed
  • De Foreslåede Design Er Lette At Implementere I Rum
  • Hvor Folk For Det Meste Sider Ned
  • Fx Kontorer
  • Teatre
  • Biografer
  • Busser
  • Tog
  • Fly
  • Etc
  • <Br/>Den Anden Del Af Afhandlingen Fokuserer På En Ny Ventilationsstrategi Der Reducerer Risikoen F
  • BesøGende Og Patienter På Hospitalsafdelinger
  • Den Nye Ventilationsstrategi Er Implementeret Ved HjæLp Af Specielt Udviklet Udstyr
  • Som Er Opkaldt ’Hospital Bed Integrated Ventilation Cleansing Unit (Hbivcu)’ (Udstyret Er En Del
  • 1) Og I Usa (Us 61/226
  • 542)
  • Ved At Udsuge Den Luft Som Patienten Udsender Ved Host Bidrog Hbivcuen Til At Beskytte LæGer Og And
  • Udover øGet Beskyttelse FøRer Brugen Af Hbivcuen Til Fald I Baggrunden Ventilationsraten
  • Denne Teknik Til Lokal Udsugning Og Rensning Af Luft Fra Host Kan LøSe De Eksisterende Problemer De
  • The Current Ph
  • D
  • Thesis Deals With New Advanced Methods Of Air Distribution In Occupied Places Aimed To Improve The I
  • <Br/>The Existing Ventilation Strategies Nowadays Are Not Able To Provide Enough Clean Air To The Oc
  • Clearly New Advanced Methods Are Needed To Improve The Current Situation
  • The Subject Is Especially Important Because Of The Energy Issue As Well As The Increased Possibility
  • The Threat From Possible Bio-Terrorist Attacks In The Last<Br/>Decade Makes The Topic Quite Importan
  • <Br/>So Far The Existing Methods Of Indoor Air Cleaning Rely On Several Basic Strategies: Dilution
  • Filtration And Ultra Violet Germicidal Irradiation (Uvgi)
  • Dilution Utilizes Ventilation At High Flow Rates To Reduce The Concentration Of Pollutants/Pathogens
  • It Is Also Connected To Certain Energy Limitation Issues
  • <Br/>Filtration And Uvgi Are Efficient In Protecting Occupants Provided The Sources Are Located Outd
  • However
  • These Methods Are Not Very Efficient
  • If The Contaminant Sources Are Indoors And Especially If The Source Is A Sick Individual
  • <Br/>The Current Thesis Focuses On Two Ways To Provide Reduced Risk From Airborne Infections: By Pro
  • Patients And Visitors From Cross-Infection In Hospital Wards
  • <Br/>The First Part Of The Thesis Focuses On Improvement Of Inhaled Air Quality And Thus Reduction I
  • Providing Clean Air Close To The Occupants With Personalized Ventilation (Pv) By Applying Control Ov
  • Two New Control Methods
  • Namely Control Over The Free Convection Layer Around The Human Body<Br/>And Control Over The Persona
  • The First Method Aims To Reduce The Strength Of The Free Convection Layer Via Blocking Or Local Exha
  • And Thus Make Possible Its Penetration By The Personalized Flow At Low Velocity (Low Flow Rate)
  • The Second Method Aims To Control The Way The Pv Flow Is Supplied So That It Is Less Affected By The
  • Both Methods Helped Greatly Increase The Performance Of The Employed Pv Systems With Respect To The
  • These Methods Also Show Great Potential For Energy Savings
  • Due To The Reduced Pv Flow Rate
  • The Suggested Designs Are Easy For Implementation In Occupied Spaces
  • Where People Spend Most Of The Time Seated
  • E
  • G
  • Offices
  • Theaters
  • Cinemas
  • Busses
  • Trains
  • Airplanes
  • Etc
  • <Br/>The Second Part Of The Thesis Focuses On A Novel Ventilation Strategy For Reduction The Risk Of
  • Visitors
  • And Patients In Hospital Wards
  • The Novel Ventilation Strategy Is Implemented By A Specially Developed Device
  • Named Hospital Bed Integrated Ventilation Cleansing Unit (The Device Is Part Of A Patient Applicatio
  • 1) And In The United States Of America (Us 61/226
  • 542)
  • The Hbivcu Helped To Provide Improved Protection To Doctor And Other Patients
  • Present In A Space
  • From A Sick Individual With Highly Contagious Airborne Transferred Disease
  • By Locally Evacuating The Air Coughed By The Sick Patient
  • Apart Of Increased Protection The Use Of The Hbivcu Leads To Decrease Of The Background Ventilation
  • This Technique Of Local Exhaust And Cleaning Of The Coughed Air Can Provide<Br/>Solution To The Exis
  • Handling The Spread And Treating Patients With Contagious Airborne Diseases
  • As Well As Problems With Insufficient Space In Hospital Wards In Times Of Epidemics And Pandemics

Abstract

Advanced Methods for Air Distribution in Occupied Spaces for Reduced Risk from Air-Borne Diseases and Improved Air Quality - DTU Orbit (27/04/14) Advanced Methods for Air Distribution in Occupied Spaces for Reduced Risk from Air- Borne Diseases and Improved Air Quality - DTU Orbit (27/04/14) Bolashikov ZD 2010. Advanced Methods for Air Distribution in Occupied Spaces for Reduced Risk from Air-Borne Diseases and Improved Air Quality. Kgs. Lyngby, Denmark: Technical University of Denmark, Department of Civil Engineering. 356 p. (DTU Civil Engineering Report; No. R-239).

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