4, October 2013 . Metal, plated Black sulfide : 0.92 : 0.10 : 9.20 ? Calculation of the visible transmittance, visible reflectance, solar transmittance, and solar reflectance was conducted using the solar transmittance measurement software shown in Fig. endstream endobj 52 0 obj <>>> endobj 53 0 obj <> endobj 54 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageC]/Properties<>/MC1<>>>/XObject<>>>/Rotate 0/TrimBox[0.0 0.0 594.0 792.0]/Type/Page>> endobj 55 0 obj <>stream Commercial spreadsheet software was used to calculate normal emittance. Mendoza, Argentina. Table 1 Standard Title Notes aSTM® G173(1) Standard Tables for Reference Solar Spectral Irradiances: Replaces withdrawn aSTM® (2003 revised in 2006) direct Normal and Hemispherical on 37 degree Tilted Surfaces E891 and 892 aSTM® E903 (1996) Solar absorptance, Reflectance and Transmittance of Materials Withdrawn – no equivalent This page may contain references to products that are not available in your country. 51 0 obj <> endobj �0��n�vrFճw��ȡ0�+�64����1�aO��>H�';z��;��T����eL�&�h,��ðo�)ծ�݃�������H�Dzԥ� �K��i���r?���x��ʪ�\�eխ5���1 E1980 Practice for Calculating Solar Reflectance Index of Horizontal and Low-Sloped Opaque Surfaces. ��W����\6�et�Z4�v���ɹt��CE�b�)ڶ�d����.�j��@����&������bZ��.���PL!硁�9 ��@�;6�N�NM���>�i��K��Q��'�� �~%K�q���~���ϸ�F|)Ƚz*5�|�sa�������a(���=,�a�'7�Pʰ�~i�jˏ�8,�6QZi��8����5���$�І9�2��0Լ�e���[y.T|�ë>��6TklQW�S��;��sSM���}ly�#x�cD.u&^����=|_��/W�㷮��J?����O�T�i�����y��"L�(j���>�6 �Y����P�y������Y�]=ur`��^��h��WJ4�&1�HS�U���o^� �w~g�TŞ��,�;�*����D(.�ߩ Thickness Measurement; Optical Profilers; Sheet Resistance Measurement; Product Selection Guide; applications; sales & support . Table 2 shows the visible transmittance, visible reflectance, solar transmittance, solar reflectance, and normal emittance of each calculated sample. It is clear from Figs. ��L�m\�ׯ����Ζ�\���CU������E������)(1BS?�b6����i����O�x���u�dM.��UO�ߛ7�s�O�m���A���鷼X<6��o�V30���2[��X1��f4��}ರ�S����r�����Wú�ථ~j��27�i��X�! ;�J�la�sct����:� ) Au=�$�W32��E�S����r��ݲn ]=t�V��D��q�ŘV��-C�٣����#�X^-����;�%����m3��w��o� -��ţV�j��5�ɳW1����iT�L�����A��΁-���h�����s5�T? 1 shows a glass sample placed on the integrating sphere. The explanation in this paper has dealt with JIS R3106. x��}ٶ]�q�;��h�^[9lN�ҽ$��lI�' 5��Ad{�\�F���P�*Tjcw�N>\��� %�쏢 Then, normal emittance (εn) is obtained from equation (6). Solar reflectance index (SRI), combines both the T.S.R.% reflectivity value and emittance va lue as a measure of a coating’s overall ability to reject solar The (S.R.I.) 0 UNSPSC Code 41115316(Reflectometers) Referencing This Standard. 76 0 obj <>/Filter/FlateDecode/ID[<482C8CCAF24643ABB3F3E47C53F1BE55>]/Index[51 37]/Info 50 0 R/Length 117/Prev 710489/Root 52 0 R/Size 88/Type/XRef/W[1 3 1]>>stream The measured samples consisted of 1 type of transparent glass and three types of opaque glass (green: transparent glass, black: opaque glass 1, red: opaque glass 2, blue: opaque glass 3). O�|w��k���V�U(��{�������_��W�����=��Aj��s���~@-t�PimAP���v������_a���c;���W�'�W�x4��W��Bu����~=�Wy��U�?�p}u��~�h ���j�w�t*��R�i��Z�}���)�Y��SQ��x�W}�t������f�������Cw�ɇz���a9��s����&�F7=�_�ޔ�+���Ɵ�K����S*�^#�f���Z��zT 1�������TB1�^��?�rh��r�r��+1_��y�O��ڮ�ɈoB1ǁ��xr����Ad6��&;���3,��z� �xJ��b�W��:�ƻ���z����[��j���=\�TF�j������z*kq\���+wө���T�����j���Q�S�=R�'x��7��gWK��lpw*қ��u5�^k �9v��~�g?���~i2�N��F�b�[���G���C~���y#}�����C 5 to easily obtain measurement results. Refractive Index Database; Reflectance Calculator; Case Studies; products. The aging of the surfaces was estimated by … h�bbd```b``�"J�� �dz"Y$@${1���l��l0�,"V�&�����q��D���9��6 If a certified surface-coated mirror is not available, the standard reflectance value specified in JIS R3106 is used. 5 0 obj Measurements were conducted on four types of commercial plate glass to determine their respective visible transmittance, visible reflectance, solar transmittance, solar reflectance, and normal emittance values. Reflectance ρn is calculated from equation (5) using the reflectance of 30 specified wavelengths among the measured values. SRI is defined to be zero for a clean black roof (with a solar reflectance of 0.05 and a thermal emittance of 0.90) and 100 for a clean white roof (with a solar reflectance of 0.80 and a thermal emittance of 0.90) (Akbari and Levinson, 2008). Not for use in diagnostic procedures. Also, if the measurement wavelength of 50 μm (200 cm-1) cannot be attained, the specular reflectance value at the measured upper limit wavelength is used as the value for longer wavelengths. stream Measurement of specular reflectance (ρn(λ)) is conducted in the range of at least 5 to 25 μm (wavenumber 2000 to 400 cm-1) at a resolution of 4 cm-1 or less within the ambient temperature's heat emittance wavelength region of 5 to 50 μm (wavenumber 2000 to 200 cm-1). Fig. Get Information; Get Support; Locations; Video Tutorials; Join Meeting; contact us +1 858-573-9300 (24 Hr. %PDF-1.4 Table 1 summarizes the measurement conditions that were used. For Research Use Only. h�b``�b``��������A���b�@�q���ʫ5@�j�o���$�1�p|M�qG��K�4��h�* �/M@Z�����f*5h?Ia��`��q�9�!���@\�x �"Fi��� Y�y@ſ]�.�Y��60zخ`�9l���u��%y�y@��0 �+� ����j�qq|�"8��RR�3�P�IC�����a�B��G\�a��R���. SOLKOTE HI/SORB-II is an optical coating specifically formulated for solar thermal applications. Table 2 shows the visible transmittance, visible reflectance, solar transmittance, solar reflectance, and normal emittance of each calculated sample. ��FIFmBJ9�����n;v#���+� |5Y The next issue will deal with the other two standards. To determine normal emittance, specular reflectance (ρn(λ)) measurement is conducted in the infrared region 2000 to 400 cm-1 using an IR spectrophotometer equipped with a specular reflectance measurement attachment. Link Here: Link to Active (This link will always route to the current Active version of the … 2, 3 and 4 that large differences in both transmittance and reflectance exist in the UVVIS- NIR region, but the reflectance values in the infrared region were about the same. 2, 3 and 4 show the transmission spectra and reflection spectra in the UV-VIS-NIR region (correction by absolute reflectance of standard sample) and reflection spectra in the infrared region, respectively. [�����t:��L�rp�/��Y��YS�����.�>��Y)��&[�a�X� Ŭ�Wɓ%S*�.����732)�tG�:'�S�ߕ��(�SQ�u�����y�j0� !�&6�6�aU�5T��}�GY`��d�m���y\!�힀K�x��I��� u�[�r\�~���P�>A?�W\0���\䑅`#�K��s{g K_ֳ��{�[����-�Y+1sLm�)����=z��߸{崘O��y���Ir3�"��2�L#EP� ��u$�����d\�)� ��� ���ǵ$(������sS,���UV���Q�w>v������!^�K�����y�8ׁ��L�jmJvz�"F��4=D�Q��#t���YUˇ('P�����,�q��@`�O���w*��V[�}_~����F�8����P+�K-lJHj� y ICS Code. Δλ is the weight coefficient indicating the standard spectrum distribution of solar energy as specified in JIS R3106. <> Though calculations based on JIS standards can also be performed by commercial spreadsheet software, calculation results can be obtained more easily by using dedicated software such as the Solar Transmittance Measurement Software shown in Fig. %PDF-1.4 %���� �Ԫ;�ȠH��l�YR�B���9�U��$�6�N��?nk0��~o�Ο��-*|6���Fon6v����n��e%�����C$�����w`�Ǿ�I���O��J:�9k]eM�8&6������s�]$ �� n��c�Z�� 87 0 obj <>stream endstream endobj startxref 5. Besides JIS R3106, which is related to flat glass, there are other solar measurement-related JIS standards: JIS A5759 regarding films for glazing used in construction and JIS K5602 regarding paint films.

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