ASTM E490-2000a(2006) Standard Solar Constant and Zero Air Mass Solar Spectral Irradiance Tables《标准太阳能常数和气团起始阳光能光谱辐照表》.pdf
《ASTM E490-2000a(2006) Standard Solar Constant and Zero Air Mass Solar Spectral Irradiance Tables《标准太阳能常数和气团起始阳光能光谱辐照表》.pdf》由会员分享,可在线阅读,更多相关《ASTM E490-2000a(2006) Standard Solar Constant and Zero Air Mass Solar Spectral Irradiance Tables《标准太阳能常数和气团起始阳光能光谱辐照表》.pdf(16页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E 490 00a (Reapproved 2006)StandardSolar Constant and Zero Air Mass Solar Spectral IrradianceTables1This standard is issued under the fixed designation E 490; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、 last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 These tables define the solar const
3、ant and zero air masssolar spectral irradiance for use in thermal analysis, thermalbalance testing, and other tests of spacecraft and spacecraftcomponents and materials. Typical applications include thecalculation of solar absorptance from spectral reflectance dataand the specification of solar UV e
4、xposure of materials duringsimulated space radiation testing.1.2 These tables are based upon data from experimentalmeasurements made from high-altitude aircraft, spacecraft, andthe earths surface and from solar spectral irradiance models.1.3 The values stated in SI units are to be regarded asstandar
5、d. Other units of measurement are included for infor-mation purposes only.1.4 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
6、 the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E 349 Terminology Relating to Space Simulation3. Terminology3.1 air mass (optical air mass) (AM), nthe ratio of thepath length or radiation through the atmosphere (lm)atanygiven angle, Z degrees, to
7、 the sea level path length toward thezenith (lz).AM 5 lm/lzsec Z , for Z#62 (1)Symbol: AM1 (air mass one), AM2 (air mass two)3.2 astronomical unit (AU), na unit of length defined asthe mean distance between the earth and the sun, that is,149 597 890 6 500 km.3.3 integrated irradiance, nspectral irra
8、diance integratedover a specific wavelength interval from l1to l2, measured inWm2, Symbol:El1 2l25*l1l2Eldl (2)3.4 irradiance at a point on a surface (E), nquotient ofthe radiant flux incident on an element of the surface contain-ing the point, by the area of that element, measured in Wm2.3.5 irradi
9、ance, spectral (E), nthe irradiance per unitwavelength interval at a specific wavelength, or as a functionof wavelength measured in Wm2m1.3.6 solar constant, nthe total solar irradiance at normalincidence on a surface in free space at the earths meandistance from the sun (1 AU).3.7 zero air mass (AM
10、O), nthe absence of atmosphericattenuation of the solar irradiance at one astronomical unitfrom the sun.3.8 Additional definitions will be found in TerminologyE 349.4. Solar Constant4.1 The solar constant is 1366.1 Wm2. This value is themean of daily averages from six different satellites over the19
11、78 to 1998 time period, all measured with absolute cavityradiometers, as reported by Frhlich and Lean (1)3. Thestandard deviation of this mean value is 425 ppm, with a0.37 % minimum-to-maximum range (1363 to 1368 Wm2).4.2 Table 1 summarizes the results in different units, andTable 2 presents the tot
12、al solar irradiance at various planetarydistances from the sun.1These tables are under the jurisdiction of ASTM Committee E21 on SpaceSimulation and Applications of Space Technology and are the direct responsibilityof Subcommittee E21.04 on Space Simulation Test Methods.Current edition approved Apri
13、l 1, 2006. Published April 2006. Originallyapproved in 1973. Last previous edition approved in 2000 as E 49 00a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the
14、standards Document Summary page onthe ASTM website.3The boldface numbers in parentheses refer to the list of references at the end ofthese tables.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Solar Spectral Irradiance (Zero Air
15、Mass)5.1 The zero air mass solar spectral irradiance is based ondata from satellites, space shuttle missions, high-altitude air-craft, rocket soundings, ground-based solar telescopes, andmodeled spectral irradiance.5.2 Table 3 presents the solar spectral irradiance in tabularform for the range from
16、0.1195 to 1000 m. The first columngives the wavelength (l) in m; the second gives the spectralirradiance (El)atl in Wm2m1; the third gives the totalirradiance for the range from 0 to l (E0-l) in Wm2; and thefourth gives the percentage of the solar constant associatedwith wavelengths shorter than l (
17、D0-l).TABLE 3 Solar Spectral IrradianceStandard Curvel = wavelength, m,El= solar spectral irradiance averaged over small bandwidth centered at l,Wm2m1,E0l= integrated solar irradiance in the wavelength range from 0 to l,Wm2, andD0l= percentage of solar constant (1366.1 Wm2) associated with wavelengt
18、hs shorter than l.NOTE 1Double lines indicate change in wavelength interval of integration. Each column continues to next page.l ElE0-lD0-ll ElE0-lD0-l0.1195 6.185 3 1020.0 0.0 1.306 413.6 1117.65 81.810.1205 0.5614 3.12 3 1042.28 3 1051.308 412.3 1118.47 81.870.1215 4.901 3.04 3 1032.23 3 1041.310
19、410.6 1119.30 81.930.1225 1.184 6.09 3 1034.45 3 1041.312 403.3 1120.11 81.990.1235 4.770 3 1026.70 3 1034.91 3 1041.314 402.2 1120.92 82.050.1245 3.433 3 1026.74 3 1034.94 3 1041.316 397.9 1121.72 82.110.1255 2.882 3 1026.77 3 1034.96 3 1041.318 401.7 1122.52 82.170.1265 3.523 3 1026.81 3 1034.98 3
20、 1041.320 401.6 1123.32 82.230.1275 2.127 3 1026.83 3 1035.00 3 1041.322 398.6 1124.12 82.290.1285 1.727 3 1026.85 3 1035.02 3 1041.324 398.1 1124.92 82.350.1295 3.994 3 1026.88 3 1035.04 3 1041.326 394.9 1125.71 82.400.1305 0.1206 6.96 3 1035.10 3 1041.328 390.8 1126.49 82.460.1315 3.983 3 1027.04
21、3 1035.16 3 1041.330 387.8 1127.27 82.520.1325 4.126 3 1027.08 3 1035.19 3 1041.332 386.3 1128.05 82.570.1335 0.1680 7.19 3 1035.26 3 1041.334 389.2 1128.82 82.630.1345 4.572 3 1027.29 3 1035.34 3 1041.336 386.6 1129.60 82.690.1355 3.802 3 1027.34 3 1035.37 3 1041.338 383.2 1130.37 82.74TABLE 1 The
22、Solar Constant in Alternative UnitsSolar constant = 1366.1 Wm2SI unit= 0.136 61 Wcm2= 136.61 m Wcm2= 1.3661 3 106ergcm2s-1= 126.9 Wft2= 1.959 calcm2min1(60.03calcm2min1)= 0.0326 calcm2s1= 433.4 Btuft2h1= 0.1202 Btuft2s1= 1.956 Langleysmin1The calorie is the thermochemical calorie-gram and is defined
23、 as 4.1840absolute joules.The Btu is the thermochemical British thermal unit and is defined by therelationship: 1 Btu (thermochemical)/(Flb) = 1 calg (thermochemical)/(Cg).The Langley, however, is defined in terms of the older thermal unit the calorieg(mean), that is, 1 Langley = 1 calg (mean)cm2; 1
24、 calg (mean) = 4.190 02 J.TABLE 2 Solar Irradiance at the PlanetsPlanetSolar Irradiance, Wm2Mean Perihelion AphelionMercury 9116.4 14447.5 6271.1Venus 2611.0 2646.4 2575.7Earth 1366.1 1412.5 1321.7Mars 588.6 715.9 491.7Jupiter 50.5 55.7 45.9Saturn 15.04 16.76 13.53Uranus 3.72 4.11 3.37Neptune 1.510
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