ASTM E3087-17 Standard Test Method for Measuring Capture Efficiency of Domestic Range Hoods.pdf

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1、Designation: E3087 17Standard Test Method forMeasuring Capture Efficiency of Domestic Range Hoods1This standard is issued under the fixed designation E3087; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.

2、 A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method measures the capture efficiency ofwall-mounted domestic range hoods under controlled condi-tions in a test chamber.

3、1.2 This test method applies to range hoods that exhaust airto outside and does not apply to recirculating range hoods.1.3 This test method only applies to range hood air flows upto 200 L/s and widths up to 0.91 m (36 in.).1.4 This test method is intended to quantify the captureefficiency of range h

4、oods under controlled laboratory condi-tions suitable for rating.1.5 The values stated in SI units are to be regarded asstandard. If a value for measurement is followed by a value inother units in parentheses, the second value may be approxi-mate. The first stated value is the requirement.1.6 This s

5、tandard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.7 This

6、international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (T

7、BT) Committee.2. Referenced Documents2.1 ASTM Standard:2E631 Terminology of Building Constructions2.2 Other Standards:HVI Publication 916 HVI Airflow Test Procedure3ASHRAE 51/AMCA 210 Laboratory Methods of TestingFans for Certified Aerodynamic Performance Rating4IEC 61591 Household range hoods - Met

8、hods for measuringperformance53. Terminology3.1 Definitions: For definitions used in this test method nototherwise defined below, refer to Terminology E631.3.1.1 capture effciency, nthe fraction of emitted tracer gasthat is directly exhausted by the range hood to be tested.3.1.2 range hood, na devic

9、e for capturing cooking-generated contaminants over a stove, range or cooktop, andexhausting the contaminants to outside the building.4. Summary of Test Method4.1 This method measures the capture efficiency of a rangehood using tracer gas techniques in a defined test chamber.4.2 A tracer gas is emit

10、ted at the test surface at a fixed ratewith the range hood to be tested operating at specifiedconditions.4.3 The concentration of the tracer gas in the exhaust streamof the range hood, the test chamber and air entering the testchamber are measured and used to determine the captureefficiency under st

11、eady-state conditions.5. Significance and Use5.1 Cooking can be one of the most polluting activitiescommonly and regularly occurring in residential environments.Capturing airborne cooking contaminants before they can mixwith the indoor air is a critical indoor air quality controlmethod.5.2 Range hoo

12、ds are used in homes to remove cooking-generated contaminants above cooking surfaces before theymix with air in the rest of the house. This test method is usedto measure the capture efficiency under specific conditions thatpermit comparisons and ratings of range hoods.1This test method is under the

13、jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.41on Air Leakage and Ventilation Performance.Current edition approved Oct. 1, 2017. Published November 2017. DOI:10.1520/E3087-17.2For referenced ASTM standards, visit the ASTM website,

14、 www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Home Ventilating Institute (HVI), 1740 Dell Range Blvd., Ste.H, PMB 450, Cheyenne, WY 82009, http:/w

15、ww.hvi.org.4Available from American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA30329, http:/www.ashrae.org.5Available from International Electrotechnical Commission (IEC), 3, rue deVaremb, 1st Floor, P.O. Box 131, CH-1211, Gen

16、eva 20, Switzerland, http:/www.iec.ch.This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Or

17、ganization Technical Barriers to Trade (TBT) Committee.15.3 Range hoods may be manufactured and intended tooperate at different flow rates or using different inserts such asfilters. This test method may be used to determine captureefficiency over the range of rated air flows and operatingconfigurati

18、ons of a range hood. The rated air flows shall belisted and shall be tested in accordance with HVI TestProcedure 916, IEC 61591, ASHRAE 51/AMCA 210, orequivalent. The maximum air flow allowed for this test methodis 200 L/s.6. Apparatus for Wall-Mounted Range Hoods6.1 Test Chamber:6.1.1 The capture e

19、fficiency testing shall be performedinside a test chamber. The chamber shall have minimum walllengths of 2.5 m and 3.5 m. The wall height shall be 2.4 to2.5 m. The volume (V) of the test chamber shall be calculated.A sketch of the test chamber is shown in Fig. 1, together withan example 0.75 m (30 i

20、n. nominal) wide range hood.6.1.2 The test chamber air leakage shall be measured withintentional inlets and outlets sealed and any access doors orpanels closed. Intentional inlets and outlets include the rangehood exhaust duct. The test chamber shall be pressurized to50 Pa. The air flow required to

21、maintain this pressure (Q50(L/s) shall be measured and recorded. This flow shall beconverted into Air Changes per Hour using Eq 1:Air Changes per Hour 53.6 3Q50V(1)The test chamber shall have less than 2.5 Air Changes perHour at 50 Pa leakage.6.1.3 The test chamber shall have one or more air inlets

22、inthe test chamber.6.1.3.1 The air inlets shall be sized so that the maximum airflow through the range hood depressurizes the test chamber byless than 5 Pa.6.1.3.2 The inlets shall be constructed so that the air comingthrough them will not directly impinge on the range hood ortracer gas emitters, in

23、coming air is directed away from the wallwhere the range hood is mounted, and there is at least a 1 mseparation between the air inlet and the range hood being testedor the cooktop, or both.6.1.3.3 The inlets shall be sized to have an average inletvelocity less than 0.5 m/s. A diffuser shall be used

24、on the airinlets to ensure uniform air flow entering the test chamber. Theinlets shall be constructed such that air flow does not impingedirectly on the range hood being tested or on the area betweenthe range hood and the cooktop.6.1.4 The range hood to be tested shall be installed on thelongest wal

25、l of the test chamber. Cabinetry shall be installed onboth sides of the range hood that extends laterally at least 0.5 mand has a depth of 0.3 to 0.4 m. The cabinetry shall be mountedto touch the ceiling and extend down vertically 1 to 1.1 m. Nocabinets shall be installed above the range hood.6.1.5

26、A countertop shall be installed below the range hoodand cabinets, with its upper surface 0.9 m from the floor. Thegap between the countertop and the floor shall be completelyfilled by kitchen cabinets or solid materials to simulate kitchencabinetry. The countertop shall extend to at least 0.5 m on e

27、achside of the range hood and have a depth from the wall of0.65 m.FIG. 1 Sketch of Example Test Chamber - SectionE3087 172FIG. 2 Sketch of Example Test Chamber - ElevationFIG. 3 Sketch of Example Test Chamber - PlanE3087 1736.2 Heating Elements, Tracer Gas Emitters, and Tracer GasSample Locations:6.

28、2.1 Each element shall be 200 6 10 mm in diameter. Theaverage power input for each electric heating element duringthe test shall be 1.0 6 0.1 kW. For 0.61 m (24 in. nominal) and0.75 m (30 in. nominal) wide range hoods, two non-inductionelectric surface heating elements shall be used for testing. For

29、0.90 m (36 in. nominal) range hoods, three non-inductionelectric surface heating elements shall be used for testing.6.2.2 A plume diffusion/tracer gas emitter assembly (seeFig. 4) shall be provided for each electric heating element. Theassembly consists of two circular metal plates and an injectorar

30、ray. Each plate shall have a diameter of 250 6 5 mm and athickness of 13 6 1 mm. Metal spacers shall be placed betweenthe plates to maintain a gap of 13 6 1 mm. The emitter arrayshall emit tracer gas evenly over both the upper and lowersurface of the top plate via holes 3.5 mm in diameter. For theup

31、per surface, a minimum of 30 holes is required. For thelower surface, a minimum of 15 holes is required. An illustra-tion of the emitter is given in Fig. 4.6.2.3 A temperature sensor with an accuracy of 65 C shallbe mounted on top of the top plate in the center of the plate.6.2.4 A tracer gas that i

32、s non-toxic, non-flammable, andstable up to 400 C (for example, CO2) shall be introducedthrough the emitter.6.2.5 The tracer gas injection rate shall be controlled towithin 61 % using a mass flow control system. The flow rateof tracer gas injection shall be less than 0.5 % of the air flowthrough the

33、 range hood.6.2.6 For 0.61 m (24 in. nominal) wide hoods, the tests shallbe performed using two emitter/pan/heating element locationssimultaneously. The emitters shall be located with the center ofthe emitters 500 mm (625 mm) from the back wall and150 mm (610 mm) to the left and right of the centerl

34、ine of therange hood. For 0.75 m (30 in. nominal) wide hoods, the testsshall be performed using two emitter/pan/heating elementlocations simultaneously. The emitters shall be located with thecenter of the emitters 500 mm (625 mm) from the back walland 200 mm (625 mm) to the left and right of the cen

35、terlineof the range hood. For 0.90 m (36 in. nominal) wide hoods,tests shall be performed using three emitter/pan/heating ele-ment locations simultaneously. The emitters shall be locatedwith the center of the emitters 500 mm (625 mm) from theback wall. One emitter shall be located on the centerline

36、of therange hood. The other two emitters shall be centered 300 mm(625 mm) to the left and right of the centerline of the rangehood6.2.7 The ambient (Cambient) tracer gas concentration shallbe measured at the air inlet to the chamber.6.2.8 The chamber tracer gas concentration (Cchamber) shallbe measu

37、red on the centerline of the range hood, 0.5 m outfrom the counter into the room and at a height half waybetween the top of the countertop and the bottom of the rangehood, as illustrated in Fig. 4. The chamber air temperature shallbe measured at this same location with an accuracy of 61 C.6.2.9 The

38、exhaust tracer gas concentration (Cexhaust) shall bemeasured in the range hood exhaust ducting at a point at least10 duct diameters downstream of the connection to the range.The measurement shall have five sample points across theexhaust duct cross-section.6.2.10 All tracer gas concentrations shall

39、be measured usingthe same measurement device.6.3 Exhaust System:FIG. 4 Plume Diffusion/Tracer Gas Emitter AssemblyE3087 1746.3.1 The exhaust system shall be used to connect the outletof the range hood to outdoors or an environment isolated fromthe test chamber.6.3.2 An auxiliary fan and damper shall

40、 be connected in linewith the range hood exhaust to enable control of the range hoodair flows.FIG. 4 Plume Diffusion/Tracer Gas Emitter Assembly (continued)FIG. 4 Plume Diffusion/Tracer Gas Emitter Assembly (continued)E3087 1756.3.3 A flowmeter with an accuracy of 62.5 L/s or 5 % ofmeasured flow (wh

41、ichever is greater) shall be connected in linewith the range hood exhaust to measure the range hood exhaustair flow, Qhood(L/s).6.3.4 The airtightness of the exhaust system shall be mea-sured by temporarily attaching a fan and flowmeter (with anaccuracy of 0.25 L/s or 5 % of reading) to one end of t

42、heexhaust duct and blocking the other end.Apressure probe shallbe installed to measure the pressure difference between theexhaust system and its surroundings. The fan shall then be usedto pressurize the exhaust duct to 25 Pa and the flow required toachieve this pressure recorded. The maximum air lea

43、kage fromthe exhaust system shall be less than 2.5 L/s at a test pressureof 25 Pa.7. Hazards7.1 Eye ProtectionBreakage at the air velocities andbuilding pressure differences normally applied to the testchamber is uncommon, however, for added safety, adequateprecautions, such as the use of eye protec

44、tion shall be taken toprotect the personnel.7.2 Safety ClothingUse safety equipment required forgeneral field work, including safety shoes, and hard hats.7.3 Equipment GuardsThe air-moving equipment shallhave proper protection for the fan or blower and to preventaccidental access to any moving parts

45、 of the equipment.7.4 Noise ProtectionExposure to the noise level generatedby some fans can be hazardous to the hearing of involvedpersonnel and hearing protection is required.7.5 Debris and FumesThe blower or fan may force a largevolume of air into or out of a chamber while in operation. Careshall

46、be exercised not to damage internal furnishings due toinflux of air. Caution shall be exercised against sucking debrisor exhaust gases into the interior of the building.7.6 Tracer GasThe tracer gases used in this method mustbe selected to be non-toxic. Care should be taken to ensure thatthey will no

47、t chemically react or thermally break-down to formnew compounds that could be hazardous.8. Procedure8.1 Temperature and other conditions for making the testmust be stable and within the calibration ranges of theequipment. Tests shall be conducted at a chamber air tempera-ture between 15 and 30 C and

48、 have no more than 5 Cvariation during the course of a test.8.2 8.2 The range hood shall be installed according to themanufacturers instructions and the distance between the bot-tom of the range hood and the counter top recorded. Theminimum height above the counter top to the bottom of therange hood

49、 shall be 0.5 m. All filters required for range hoodoperation shall be installed. Openings for lights shall be sealed.8.3 The range hood shall be turned on and set to the desiredoperating speed. The auxiliary fan and dampers shall beadjusted to obtain the target air flow through the range hood.8.4 The heating elements shall be turned on and adjusted tomaintain a surface temperature of 200 6 10 C.8.5 The tracer gas flow shall be adjusted to achieve aconcentration in the range hood exhaust such that the tracer gasmeasurement device manufacturers stated accuracy