Improving the Healing Environment in Patient Rooms: to the Healing...Improving the Healing Environment in Patient Rooms: ... Improving the Healing Environment in Patient Rooms: ... Improving the Healing Environment in ...

  • Published on
    06-Feb-2018

  • View
    214

  • Download
    0

Transcript

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 1

    ImprovingtheHealingEnvironmentinPatientRooms:

    UpdatestoASHRAEStandard170

    Course: PTP 3010AIA Provider #J877

    Price Industries is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available upon request.

    This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA or any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 2

    COPYRIGHT MATERIALS

    This presentation is protected by US and International copyright laws.

    Reproduction, distribution, display and use of the presentation without written

    permission of the speaker is prohibited. Price Industries, Inc., 2013.

    Learning ObjectivesAt the end of this presentation, you should understand:

    What are the recent addendums for ASHRAE Standard 170 pertaining to patient spaces

    What is Addendum G to ASHRAE Standard 170 What is Addendum H to ASHRAE Standard 170 What is an Active Chilled Beam and how do it work What is Displacement Ventilation and how does it work How can displacement ventilation be used to provide

    heating and cooling and reduce cost of heating and cooling patient rooms

    How can Active Chilled Beams be used to provide heating and cooling and reduce the cost of heating and cooling patient rooms

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 3

    Introduction HealthCareVentilationStandards

    Displacement1. Overview2. TheoryandDesignConsiderations3. PatientRoomExample

    ChilledBeams1. Overview2. TheoryandDesignConsiderations3. PatientRoomExample

    Outline

    EmergingHealthCareDesignTrendsHealthCareVentilationStandards

    ASHRAEStandard170 2008

    AIA2006(Adoptedby42States)

    AIA2010(IncludesASHRAE170)

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 4

    EmergingHealthCareDesignTrendsHealthCareVentilationStandards

    RecentlypublishedASHRAE170addendums:

    AddendumG FurtherdefinitionofAirDiffusersforPatientRooms(Displacement)

    AddendumH FurtherdefinitionofRecirculatingRoomHVACunits(ChilledBeams)

    Single bed patient rooms Group A, Group D, or Group E

    All other patient care spaces

    Group A or Group E

    All other spaces No Requirement

    ASHRAEstandard170

    EmergingHealthCareDesignTrendsHealthCareVentilationStandards

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 5

    Table 7 1, Notes(s) For single bed patient rooms using Group D diffusers, a minimum of six total air changes per hour shall be provided and calculated based on the volume from finished floor to six feet above the floor 6- 0

    ASHRAEstandard170,AddendumG

    EmergingHealthCareDesignTrendsHealthCareVentilationStandards

    EmergingHealthCareDesignTrendsHealthCareVentilationStandards

    ASHRAEstandard170,AddendumH

    Table 7 1, Notes(a) The portion of the Minimum Total ach required for a space that is greater than the Minimum Outdoor ach required component may be provided by recirculating room HVAC units. Such recirculating room HVAC units shall:

    (1) Not receive non-filtered, non-conditioned outdoor air,(2) Serve only a single space,(3) Provide a minimum MERV 6 filter for the airflow passing over any surface

    that is designed to condense water.

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 6

    DISPLACEMENT VENTILATION

    History of Displacement Systems: Utilized in Europe for over 30 years

    Origins in industrial facilities

    #1 choice for industrial facilities in Europe

    Applied to commercial market in the 1980s

    Becoming popular in North America

    DisplacementVentilation

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 7

    Review of Mixing systems: 55F Supply Air

    Mix the entire space

    Diffusers drive air motion

    High velocity supply

    DisplacementVentilation

    Displacement Systems: 65-68F supply air

    Low velocity

    No mixing in space

    Heat sources drive air motion

    Stratified heat, contaminants

    Only conditions the occupied zone

    DisplacementVentilation

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 8

    EnergySavings Heating,coolingand

    ventilationconsume42%oftypicalofficeenergy

    Possiblereductionswithdisplacement: Ventilationrequirements Staticpressures Heatingrequirement Coolinghours(economizer)

    DisplacementVentilationBenefits

    Improvedthermalcomfort Warmersupplytemperature Reducedfacevelocity Reduceddraftrisk Airdrawntoheatsources

    DisplacementVentilationBenefits

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 9

    Common Applications: Schools

    Theaters

    Casinos

    Airports

    Healthcare

    Halls & Conference Rooms

    Offices & Lobby Areas

    Restaurants & Cafeterias

    Industrial Spaces

    DisplacementVentilation

    Thermal Plumes: Heat sources drive air motion

    DisplacementVentilation

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 10

    Layout: Air is drawn to heat sources Cool supply air flows around:

    - Complex geometries- Furniture- Obstructions

    DisplacementVentilation

    2-10 F Cooling 05FHeating 5F+Heating

    Heating with Displacement:

    DisplacementVentilation

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 11

    Heating with Displacement: Perimeter Radiation

    Diffusers with Integrated Heat

    Radiant Ceiling Panels

    Fan Coil Units

    DisplacementVentilation

    Displacement Ventilation Velocity Profile

    DisplacementVentilation HealthcarePatientRoom

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 12

    Hospital Mockup IAQ testing Tracer gas injected Test for:

    Ventilation effectiveness Contaminant exposure

    DisplacementVentilation HealthcarePatientRoom

    Hospital Mockup IAQ testing Tracer gas injected Test for:

    Ventilation effectiveness Contaminant exposure

    DisplacementVentilation HealthcarePatientRoom

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 13

    PatientRoomOutsideCondition SupplyType Airflow

    VentilationEfficiency

    Summer

    DF1W LowSidewallDV 80 1.28

    DF1L OverheadDV 80 1.14

    SCD SquareCone 80 0.65

    Winter

    DF1W LowSidewallDV 80 1.14

    DF1L OverheadDV 80 1.06

    SCD SquareCone 160 0.92

    DisplacementVentilation HealthcarePatientRoom

    AIR DISTRIBUTION METHOD OverheadDisplacement

    Ventilation(low)

    Displacement Ventilation

    (high)

    Supply Air Volume 290 190 190

    Corresponding ACH 6 4 4

    VENTILATION EFFECTIVENESS 1.24 1.41 1.27

    DisplacementVentilation HealthcarePatientRoom

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 14

    WaitingRoomSupplyType CFM ACH VE

    SCD SquareCone 1800 12 0.90

    DF1L OverheadDV 1200 8 1.09

    DF1W LowSidewallDV 900 6 1.04

    DisplacementVentilation HealthcareHospitalWaitingRoom

    Hydronic SystemsHistoryandIntroduction

    StartedinEuropeapprox.60yearsagoo Metalceilingso Radiantsystems

    Seekingmorecapacityo Passivechilledbeams

    Integrationofventilationsystemo Activechilledbeams

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 15

    Air-Water SystemsTHE GOAL Maintain occupant comfort Minimize energy consumption

    Reduce fan energy Reduce heat loads from

    equipment

    CBS Newsletter, Fall 1994 http:/eetd.lbl.gov/newsletter/CBS_NL/n14/RadiantCooling.html

    Coolingandheatingaremovedmoreefficientlythroughwaterthanair lesstransportationpowerandlessspacerequired

    Stillneedventilationair

    WhyUseAirWaterSystems?

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 16

    Applications Laboratories OfficeBuildings HospitalPatientRoomsandAncillarySpaces Pharmacies Schools Hotels,Dorms

    Applications Suitability

    Legend: Humidity is of

    less concern

    Additional care to control building moisture

    Humidity must be carefully considered

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 17

    AirWaterSystems

    Latentvs.SensibleCooling

    Sensiblecooling: Removalofheatthatcausesachangein

    temperaturewithoutchangingwatervaporcontent.

    Latentcooling: Removalofmoistureintheair.

    Condensation Condensationformationgenerallytakesawhile,

    notlikeaglass Largesurfaceareaonwhichtocondense

    RoomSideCooling

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 18

    AirWaterSystemsWaterisforRoomSideSensibleOnlyCooling

    Humiditycontrol Airsidetomeet100%oflatentload

    Infiltration Maximumoccupancy Othersources

    MaintainCHWSTemperaturehigherthandewpoint 2to3F

    Controls Monitortransportnetworkand

    humiditylevel Donotapplywherehumiditycontrolcanbelost

    Smallretail,lobbyareas,etc.

    AirWaterSystemsBenefitsEnergyEfficiency Reducedsystemhorsepower Wetsideeconomization Freecooling

    SmallerMechanicalSystem Lowerfloortofloorheights Smallerrisers increasedtenantfloorspace

    ReducedMaintenance Nomovingparts,filtersorelectrical Nodrainpans

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 19

    AirWaterSystemsBenefits

    Improvedthermalcomfort Lowdraftrisk

    Improvedindoorairquality Effectivewhenusing100%DOAS

    Silentmechanicalsystem Watersideofsystemhaslownoise SmallerAirsideofsystemlessnoisethanallair

    HOW DO THEY WORK?

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 20

    ChilledBeamsActiveandPassive

    Convectiveheatingandcooling

    Highercapacitiesthanpanelsandsails

    IntegratedairflowforActiveBeams 2types:

    o PassiveChilledBeamo ActiveChilledBeam

    Activebeamsinduceroomair Dependentonprimaryairflow Nozzlesize

    2or4pipecoil Linearormodular

    ActiveChilledBeamsOperation

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 21

    Reducedprimaryairquantity From6ACHto2ACH(100%OA) Reducesfanpower Significantlyreducesreheatrequirement Chilledbeamchilledwaterreturn(62Fto65F)

    canbeusedtoprovidereheat

    Eliminatescommonreturn Reducehospitalassociatedinfection

    Provideslowernoiselevel&betterhealingenvironment

    ActiveBeamsinHealthCareTheoryandDesignConsiderations

    PatientRoom 300ft 2ACH=90cfm,6ACH=270cfm InternalCoolingLoad:6,000btu/hrsensible,400btu/hrlatent

    Item Chilled Beam VAVRequired Airflow 90 CFM 270 CFMOutside Airflow 90 CFM 90 CFMSupply Temp 55 54Required Pressure .52 1.0Coil LAT 50 54CHWS Temp 57 F to 62 F 45 F to 55 F

    ActiveBeamsinHealthCarePatientRoomEnergyExample

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 22

    PatientRoom ActiveBeamSelection

    2x8 6000Btu/hr

    Condition ResultAirflow 90 cfmSound NC 21 (@5)Pressure drop 0.55Water flow rate 1.35 gpmWater head loss 6.9

    ActiveBeamsinHealthCarePatientRoomEnergyExample

    EnergyComparison

    Notes:1kwperhp,1kwperton,$0.10perkwh,$1.00pertherm

    Item Chilled Beam VAVFan Power per Room 0.103 bhp 0.308 bhpReheat per year 20.2 therms 159.3 thermsOvercooling per year 129 ton hours 1017 ton hoursFan heat savings 291.6 btu/hr 874.8 btu/hr Energy Savings 3,110 kwh & 139 therms per yearCost Savings per Room $450 per year

    ActiveBeamsinHealthCarePatientRoomEnergyExample

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 23

    ActiveBeamsinHealthCare

    JasperMemorialHospital Jasper,IN

    PharmacysectionofhospitalHighthermalcomfortExpectedtobeusedagaininthe

    hospitalRenovationwithlowceiling

    heights

    ActiveBeamsinHealthCare

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 24

    RadiantPanels

    Primarilyradiantheating/cooling noairflow Quickresponsetoloaddemand Usedalongperimetersorspotcoolinginterior 2types:Linear(RPL)&Modular(RPM)

    RPM

    Hydronic Systems

    Hydronic Systems

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 25

    ChilledSails

    Radiantandconvectivecooling

    Increasedperformanceoverpanels

    Profilesandfreeareaencourageconvection

    Architecturalintegration

    Hydronic Systems

    LaboratoryOffice ConferenceRoom

    Hydronic Systems

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 26

    ActiveChilledBeams

    ActiveandPassiveBeamsCombination

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 27

    PassiveBeams

    Laboratory AUDIMuseum

    PassiveBeams

    Hydronic Systems

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 28

    WoodsLab,TNBourneSchool,MA

    ActiveBeams

    Hydronic Systems

    Hydronic Systems

    ActiveBeamPerformance NoNAteststandards NoNAratingprogram Currentlytestedto:

    DIN14037 heatedceilings DIN14240 chilledceilings DIN15116 activebeams DIN14518 passivebeams

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 29

    Hydronic SystemsActiveBeamPerformance ApplicableStandards

    Capacity EN15116 ASHRAEStandard200P

    Indevelopment

    AHRIStandard1240P Mostlycomplete

    EngineeringSupportMockupshelptoevaluatedesignoptions Evaluatecomfort,capacity,other

    Airvelocity,temperature Identifyopportunitiestooptimizethedesign

  • Improving the Healing Environment in Patient Rooms: Update to ASHRAE 170

    Copyright 2013, All Rights Reserved - Price Industries, Inc. 30

    Questions?This concludes the American Institute of Architects Continuing Education

    Systems Program

    www.price-hvac.com

Recommended

View more >