GOST EN 12898-2014 Glass and glass products Thermal characteristics determination methods Determination of the emissivity《玻璃和玻璃制品 热特性测定方法 发射率的测定》.pdf

1、 (EN 12898:2001, IDT) , ()INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION(ISC)EN 128982014, 1.092 . 1.22009 . , - . , , -, 1 ( 41 ) - , 52 (-)3 , ( 20 2014 . 71-) : ( 3166) 00497 ( 3166) 00497 BYKZKGMDRUTJUZUA - 4 15 2015 . 260- EN 128982014 1 2016 .5 EN 12898:2001 Glass inbuildi

2、ng Determination of the emissivity ( . ). :- - -;- 2 , ;- , - . CEN/TC 129 (CEN). (en). , - , . (IDT)6 541682010. - 15 2015 . 260- 541682010 1 2016 .II EN 1289820147 -, - . () . , - - , 2015 -, III EN 1289820141 .12 13 24 25 36 , - .47 48 .5 () .6 () 7 () 8 9IV EN 128982014 Glass and glass products.

3、 Thermal characteristics determination methods. Determination of the emissivity1 , , . 283 - 15., , , , :) , -;b) , , ;) .,- (. 3.6) (. 3.7).2 c101 ( ) 283 ;c101n * 283 ;E ;E0 , ;Est ;Rn * 283 ;Rn(c108) * ;Rn,st * ;Tn(c108) * ;Tn * 283 .* , - ( ) .1 EN 128982014 201604013 :3.1 (infrared): 5 50 .3.2

4、(emissivity): , , , ( , ) -. :a) , ( );b) , ( ). (. 6). .3.3 () (regular (specular) reflectance): , , .3.4 (diffuse reflectance): , - , - / - .3.5 (hemispherical reflectance): .3.6 (non-diffusing glazing component): -, , 2 , 0,05 (. 7). , - . .3.7 , (non-infrared transparentglazing component): , - 2

5、83 0,05.3.8 (reference mirror): .4 :a) -Rn(c108) 5 50 (. 5);b) Rn 283 6;c) c101n 6;d) c101 c101/c101n, .2. 1 , , - 15. 2 - 283 , 283 (. 7). - - , , -2 EN 128982014, 15, 0,837 (. 8). . 3 c101= 0,837 - (. 8). 4 253 313 - (. 8 9).5 5.1 . , , -. , .5.2 - 5 50 .5.2.1 :- , 5 50 ;- ( , . 7, 9, 10) - Rn,st(

6、c108);- , . ( - ) , - ( ) 10.5.2.2 - . Rn(c108i) c108i,.1, :E ;Est ;E0 , . Rn(c108i) c108i Rn(c108i)=EEEEstc45c4500c215 Rn,st(c108i),(1) Rn,st(c108i) - c108i. - , , , - V-W, Strong-type (. 10). , . ( -) . .3 EN 1289820145.2.3 - c177 0,02. .5.3 , , , . , , - 5 50 , .6 , 6.1 Rn 283 Rn(c108i), 30 c108i,