1, No. The next issue will deal with the other two standards. E1980 Practice for Calculating Solar Reflectance Index of Horizontal and Low-Sloped Opaque Surfaces. 51 0 obj <> endobj ��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�! Solar Reflectance. 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 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. Link Here: Link to Active (This link will always route to the current Active version of the … ��FIFmBJ9�����n;v#���+� |5Y It is clear from Figs. %PDF-1.4 %���� Refractive Index Database; Reflectance Calculator; Case Studies; products. Thickness Measurement; Optical Profilers; Sheet Resistance Measurement; Product Selection Guide; applications; sales & support . Please contact us to check the availability of these products in your country. ICS Code. The booklet addresses a range of UV related topics and useful analysis information and know-how using Shimadzu UV spectrophotometers. 5 to easily obtain measurement results. index calculation is done in accordance with ASTM E 1980-01. UNSPSC Code 41115316(Reflectometers) Referencing This Standard. ��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���$�І9�2��0Լ�e���[y.T|�ë>��6TklQW�S��;��sSM���}ly�#x�cD.u&^����=|_��/W�㷮��J?����O�T�i�����y��"L�(j���>�6 �Y����P�y������Y�]=ur`��^��h��WJ4�&1�HS�U���o^� �w~g�TŞ��,�;�*����D(.�ߩ h�b``�b``��������A���b�@�q���ʫ5@�j�o���$�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 �+� ANSI/CRRC S100. 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 Table 2 shows the visible transmittance, visible reflectance, solar transmittance, solar reflectance, and normal emittance of each calculated sample. 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. 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). Δλ is the weight coefficient indicating the standard spectrum distribution of solar energy as specified in JIS R3106. Solec; Metal, plated Nickel oxide : 0.92 : 0.08 : 11.00: This is stainless steel heated until the nickel oxidizes.? %PDF-1.4 The explanation in this paper has dealt with JIS R3106. If a certified surface-coated mirror is not available, the standard reflectance value specified in JIS R3106 is used. 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. SOLKOTE HI/SORB-II is an optical coating specifically formulated for solar thermal applications. Not for use in diagnostic procedures. Get Information; Get Support; Locations; Video Tutorials; Join Meeting; contact us +1 858-573-9300 (24 Hr. �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�� ;�J�la�sct����:� ) Au=�$�W32��E�S����r��ݲn ]=t�V��D��q�ŘV��-C�٣����#�X^-����;�%����m3��w��o� -��ţV�j��5�ɳW1����iT�L�����A��΁-���h�����s5�T? ����j�qq|�"8��RR�3�P�IC�����a�B��G\�a��R���. Also, if the measurement wavelength of 50 μm (200 cm-1) cannot be attained, the specular reflectance value at the measured upper limit wavelength is used as the value for longer wavelengths. Though calculations based on JIS standards can also be performed by commercial spreadsheet software, calculation results can be obtained more easily by using dedicated software such as the Solar Transmittance Measurement Software shown in Fig. Metal, plated Black sulfide : 0.92 : 0.10 : 9.20 ? The measured samples consisted of 1 type of transparent glass and three types of opaque glass (green: transparent glass, black: opaque glass 1, red: opaque glass 2, blue: opaque glass 3). %%EOF �0��n�vrFճw��ȡ0�+�64����1�aO��>H�';z��;��T����eL�&�h,��ðo�)ծ�݃�������H�Dzԥ� �K��i���r?���x��ʪ�\�eխ5���1 Calculation of the visible transmittance, visible reflectance, solar transmittance, and solar reflectance was conducted using the solar transmittance measurement software shown in Fig. hޤV[��F�+�1UE�~��H� m$H�˶���e]�*�+㕒�s�1�eCe�g|�3�� $��CH���(��QA���R� т Fig. To determine normal emittance, specular reflectance (ρn(λ)) measurement is conducted in the infrared region 2000 to 400 cm-1 using an IR spectrophotometer equipped with a specular reflectance measurement attachment. 5. Commercial spreadsheet software was used to calculate normal emittance. stream 5 0 obj 87 0 obj <>stream SRI is defined to be zero for a clean black roof (with a solar reflectance of 0.05 and a thermal emittance of 0.90) and 100 for a clean white roof (with a solar reflectance of 0.80 and a thermal emittance of 0.90) (Akbari and Levinson, 2008). Reflectance ρn is calculated from equation (5) using the reflectance of 30 specified wavelengths among the measured values. Close to parallel beam of light incident from the normal direction, Close to parallel beam of light incident from the radiation slit at an angle not exceeding 15°, Irradiation at an angle not exceeding 15°, The air layer is used as the standard sample, and its spectral transmittance is taken to be 1, Specular reflector of reflectance specified by the absolute reflectance measurement method (sample 1), or specular reflector of reflectance specified by comparison with the sample 1, Aluminum-coated mirror with certified absolute reflectance. <> x��}ٶ]�q�;��h�^[9lN�ҽ$��lI�' 5��Ad{�\�F���P�*Tjcw�N>\��� 1 shows a glass sample placed on the integrating sphere. [�����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 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.) The aging of the surfaces was estimated by … 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 4, October 2013 . 5 to easily obtain measurement results. TABLE I: MATERIAL CLASSIFICATION ACCORDING TO ITS COMPOSITION, COLOR AND TEXTURE. This page may contain references to products that are not available in your country. ANSI/CRRC Standard. %�쏢 endstream endobj startxref Table 1 summarizes the measurement conditions that were used. 0 Figs. ICS Number Code 17.180.20 (Colours and measurement of light) UNSPSC Code. Then, normal emittance (εn) is obtained from equation (6). Mon-Fri) Refractive Index Database. 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 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. h�bbd```b``�"J�� �dz"Y$@${1���l��l0�,"V�&�����q��D���9��6 Mendoza, Argentina. Table 2 shows the visible transmittance, visible reflectance, solar transmittance, solar reflectance, and normal emittance of each calculated sample. Solar Reflectance Index of Pedestrian Pavements and Their Response to Aging N. L. Alchapar, E. N. Correa, and M. A. Cantón DOI: 10.7763/JOCET.2013.V1.64 281 Journal of Clean Energy Technologies, Vol. � Ͳ�"D�\Z[�%�3%z�듡��c,��|�O���������Gi�xg��`�4��zWU�]�,����,�}`����A���r��T��C��׏^�W��'�Bׯf�a���߱�q�чq�{���;4��G�g��=a���?�T�h�}��D�s\A�ɥ�=�QQ��֑y�EY�. For Research Use Only. Calculation of the visible transmittance, visible reflectance, solar transmittance, and solar reflectance was conducted using the solar transmittance measurement software shown in Fig.