ANSI ASTM F2644-2007 Standard Test Method for Performance of Commercial Patio Heaters《商业户外加热器性能试验方法》.pdf
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1、Designation: F2644 07 (Reapproved 2013) An American National StandardStandard Test Method forPerformance of Commercial Patio Heaters1This standard is issued under the fixed designation F2644; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, the year of last revision. 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 covers the heating performance andenergy consumption of commercial radiant patio
3、 heaters. Thefood service operator can use this evaluation to select acommercial patio heater and understand its energy perfor-mance and effective heated area.1.2 This test method is applicable to commercial gas andelectric radiant patio heaters.1.3 The patio heater can be evaluated with respect to
4、thefollowing:1.3.1 Energy input rate (10.2),1.3.2 Preheat energy consumption and time (10.3),1.3.3 Temperature distribution (10.4), and1.3.4 Effective heated area (10.4).1.4 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation on
5、ly.1.5 This standard 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2. Reference
6、d Documents2.1 ASTM Standards:2D3588 Practice for Calculating Heat Value, CompressibilityFactor, and Relative Density of Gaseous Fuels2.2 ANSI Documents:3ANSI Z83.19 Gas-Fired High-Intensity Infrared HeatersANSI Z83.20 Gas-Fired Low-Intensity Infrared Heaters2.3 ASHRAE Documents:4ASHRAE 551992 Therm
7、al Environmental Conditions forHuman Occupancy3. Terminology3.1 Definitions:3.1.1 boundary, nthe edge of the area being warmed undera patio heater that corresponds to 3F above the designenvironment mean radiant temperature.3.1.2 design environment, nunheated environment forwhich test units performan
8、ce is to be evaluated. Designenvironment is specified as having a mean radiant temperatureof 60F.3.1.3 effective heated area, nthe amount of square footagethat can be warmed to a specified temperature (3F above thedesign environment mean radiant temperature) under a patioheater.3.1.4 energy input ra
9、te, npeak rate at which a patio heaterconsumes energy (kW or Btu/h), typically reflected duringpreheat.3.1.5 heating index, nthe quotient of the effective heatedarea and the measured energy input rate.3.1.6 mean radiant temperature, nthe uniform surfacetemperature of an imaginary black enclosure in
10、which anoccupant would exchange the same amount of radiant heat asin the actual non-uniform space.NOTE 1Since all environments radiate thermal energy, the meanradiant temperature can be determined for an unheated as well as a heatedenvironment.3.1.7 operative temperature, nthe uniform temperature of
11、an imaginary black enclosure in which an occupant wouldexchange the same amount of heat by radiation plus convectionas in the actual non-uniform environment. Operative tempera-ture is numerically the average of the air temperature (Ta) andthe mean radiant temperature (Tr), weighted by their respecti
12、veheat transfer coefficients (hcand hr) (see ASHRAE 551992):To5hc3Ta1hr3Tr!hc1hr!1This test method is under the jurisdiction of ASTM Committee F26 on FoodService Equipment and is the direct responsibility of Subcommittee F26.06 onProductivity and Energy Protocol.Current edition approved June 1, 2013
13、. Published August 2013. Originallyapproved in 2007. Last previous edition approved in 2007 as F2644 07. DOI:10.1520/F2644-07R13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume informati
14、on, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE)
15、, 1791 Tullie Circle, NE, Atlanta, GA30329, http:/www.ashrae.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1NOTE 2In the absence of air movement, the operative temperature isequal to the mean radiant temperature.3.1.8 patio heate
16、r, nan appliance that is designed forwarming outdoor areas using radiant heat.3.1.9 preheat energy, namount of energy consumed bythe patio heater while preheating the patio heater from ambientroom temperature (75 6 10F) to its operating temperature.3.1.10 preheat rate, naverage rate (F/min) at which
17、 thepatio heater comes up to its operating temperature from a 75 610F ambient temperature.3.1.11 preheat time, ntime required for the patio heater topreheat from ambient room temperature (75 6 10F) to itsoperating temperature.3.1.12 uncertainty, nmeasure of systematic and precisionerrors in specifie
18、d instrumentation or measure of repeatabilityof a reported test result.4. Summary of Test Method4.1 The patio heater is connected to the appropriate meteredenergy source, and energy input rate is determined to confirmthat the appliance is operating within 5 % of the nameplateenergy input rate.4.2 Th
19、e amount of energy and time required to preheat thepatio heater to its operating temperature is determined.4.3 The amount of square footage that could be effectivelywarmed by a heater is determined and characterized.5. Significance and Use5.1 The energy input rate test is used to confirm that thepat
20、io heater is operating properly prior to further testing.5.2 Preheat energy and time can be useful to food serviceoperators to manage energy demands and to know how quicklythe patio heater can be ready for operation.5.3 The temperature distribution of a patio heater can beused by operators and desig
21、ners to determine the most effectivelayout for a patio heating system.5.4 The effective heated area can be used by operators tochoose a patio heater that meets their heating needs.6. Apparatus6.1 Aspirated Thermocouples, for measuring average bulkair temperature in the test space.6.2 Barometer, for
22、measuring absolute atmosphericpressure, to be used for adjustment of measured gas volume tostandard conditions. Shall have a resolution of 0.2 in. Hg andan uncertainty of 0.2 in. Hg.6.3 Data Acquisition System, for measuring energy andtemperatures, capable of multiple channel displays updating atlea
23、st every 2 s.6.4 Gas Meter, for measuring the gas consumption of a patioheater, shall be a dry positive displacement type with aresolution of at least 0.01 ft3and a maximum uncertainty nogreater than 1 % of the measured value for any demand greaterthan 2.2 ft3/h. If the meter is used for measuring t
24、he gasconsumed by the pilot lights, it shall have a resolution of atleast 0.01 ft3and a maximum uncertainty no greater than 2 %of the measured value.6.5 Globe Thermometer, comprised of a beaded-junctionthermocouple located in the geometric center of a 2-star,precise round, ping-pong ball for determi
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