[从业资格考试]12第十一章辐射换热

1、1211-1 3gggggggggg1gggggg100ddgg00ddgg00ddgg, 4, 0,15,00ddgg00ddgg00ddgg62ar22ddar2dsin d= sin d drrr 71d,d cos dla ,l ,ll 8 0lldd0ee d92dee cosel 2cos del 10251b/1ctceec1= 3.74310-16 wm2 ;c2 = 1.43910-2 mk。 1133max2.8976 102.9 10m kt4bet12251bb/()00dd1ctceee12be2121bbdee21bb00ddee12be21121221bbb00b

2、b 0b 0bbbddeeefffeee13251/b00b 044dd1ctceeftt251/0d1tctcttfte1221bbb 0b 0effe14 ll常常数数 coselcoscosnle 2cos del 2cos sin d dl 2/200dsin cos dll 15beebeeb0bdeeb0bdee164beet bbleel171.0 1.2n0.95 1.0n18192021, , ,tt tt tt22232422121112dcosddcosbalarb22112dcosdcoseaar12b1122coscosd dea ar121212b1122cosco

3、sd daaea ar 1212b1122coscosaaedadar 25121,21b1xae212,12b2xa e121212211coscosd daaa aar 121212221coscosd daaa aar 11,222,1a xa x,1,2,11ni jiii ii njxxxxx261b11,21b11,1b11,abae xae xae x1,21,1,abxxx1b11b11,21b11,31, 2 3ae xae xae x1,21,31, 2 3xxx121,21b1xae121212211coscosd daaa aar 271,21x11,222,1a xa

4、 x12,12axa21,21,21aaaxxa1,22,11xx11,211,31a xa xa22,122,32a xa xa33,133,23a xa xa11,222,1a xa x11,333,1a xa x22,333,2a xa x2811,211,322,31231()2a xa xa xaaa11,211,31a xa xa2312312,32222aaalllxal22,122,32a xa xa1321321,31122aaalllxal33,133,23a xa xa1231231,21122aaalllxal1,21,1,1acbdxxx 1,12acabacbcxl

5、1,12bdabbdadxl 1,22adbcacbdxab291211,2b1a xe2122,1b2a xe1,2122111,2b122,1b2a xea xe11,2b1b2a xee22,1b1b2a xeeb1b21,211,21eea x11,21a x30,bb11nnii jii jijjja xeeb1jegegjgabega31b1eja1abjeb11111 11eja2b222221jea321,211,2122,12a xja xj11,212a xjj1211,21jja x1212b1b212121 111,222111eeaa xa33b1b212121 111,222111eeaa xa12aaa1,22,11xxb1b212()111a ee1,2b1b2aee1,21x1b1b21,21122()111a eeaa12aa1,21 1b1b2aee34b1iiiiiieja,1nii jijja xjj1,1nijjii jjja x35(1)iibiiijegiijgiibiije36b1iiiiieja1,1nijjii jjja x3738 1121212 121211nn44f1112ah ttatt 44112f1tttth 3944f1113h