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.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on
17、Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization 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
18、test method may be used to determine captureefficiency over the range of rated air flows and operatingconfigurations 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 all
19、owed for this test methodis 200 L/s.6. Apparatus for Wall-Mounted Range Hoods6.1 Test Chamber:6.1.1 The capture efficiency 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
20、chamber shall be calculated.A sketch of the test chamber is shown in Fig. 1, together withan example 0.75 m (30 in. 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 out
21、lets include the rangehood exhaust duct. The test chamber shall be pressurized to50 Pa. The air flow required to 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
22、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 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 con
23、structed so that the air comingthrough them will not directly impinge on the range hood ortracer gas emitters, incoming 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 bot
24、h.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 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
25、area betweenthe range hood and the cooktop.6.1.4 The range hood to be tested shall be installed on thelongest wall 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 t
26、ouch the ceiling and extend down vertically 1 to 1.1 m. Nocabinets shall be installed above the range hood.6.1.5 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 kit
27、chen cabinets or solid materials to simulate kitchencabinetry. The countertop shall extend to at least 0.5 m on eachside 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
28、 Example Test Chamber - PlanE3087 1736.2 Heating Elements, Tracer Gas Emitters, and Tracer GasSample Locations:6.2.1 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
29、 in. nominal) wide range hoods, two non-inductionelectric surface heating elements shall be used for testing. For0.90 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 b
30、e provided for each electric heating element. Theassembly consists of two circular metal plates and an injectorarray. 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 emi
31、t tracer gas evenly over both the upper and lowersurface of the top plate via holes 3.5 mm in diameter. For theupper 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
32、 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 is 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 m
33、ass flow control system. The flow rateof tracer gas injection shall be less than 0.5 % of the air flowthrough the 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
34、 center ofthe emitters 500 mm (625 mm) from the back wall and150 mm (610 mm) to the left and right of the centerline 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
35、 thecenter of the emitters 500 mm (625 mm) from the back walland 200 mm (625 mm) to the left and right of the centerlineof 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 locatedw
36、ith the center of the emitters 500 mm (625 mm) from theback wall. One emitter shall be located on the centerline 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 sha
37、llbe measured at the air inlet to the chamber.6.2.8 The chamber tracer gas concentration (Cchamber) shallbe measured 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
38、in Fig. 4. The chamber air temperature shallbe measured at this same location with an accuracy of 61 C.6.2.9 The 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 measureme
39、nt shall have five sample points across theexhaust duct cross-section.6.2.10 All tracer gas concentrations shall 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 t
40、he range hood to outdoors or an environment isolated fromthe test chamber.6.3.2 An auxiliary fan and damper shall 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 G
41、as Emitter Assembly (continued)E3087 1756.3.3 A flowmeter with an accuracy of 62.5 L/s or 5 % ofmeasured flow (whichever 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-s
42、ured by temporarily attaching a fan and flowmeter (with anaccuracy of 0.25 L/s or 5 % of reading) to one end of theexhaust 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
43、 pressurize the exhaust duct to 25 Pa and the flow required toachieve this pressure recorded. The maximum air leakage 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 appl
44、ied to the testchamber is uncommon, however, for added safety, adequateprecautions, such as the use of eye protection 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-movin
45、g equipment shallhave proper protection for the fan or blower and to preventaccidental access to any moving parts 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
46、and FumesThe blower or fan may force a largevolume of air into or out of a chamber while in operation. Careshall 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
47、tracer gases used in this method mustbe selected to be non-toxic. Care should be taken to ensure thatthey will not 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 c
48、alibration ranges of theequipment. Tests shall be conducted at a chamber air tempera-ture between 15 and 30 C and 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 th
49、e range hood and the counter top recorded. Theminimum height above the counter top to the bottom of therange hood 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
