{"id":393623,"date":"2024-11-11T16:47:13","date_gmt":"2024-11-11T16:47:13","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/393623\/"},"modified":"2024-11-11T16:47:13","modified_gmt":"2024-11-11T16:47:13","slug":"393623","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/393623\/","title":{"rendered":"Reply To: Help needed – Solar calculator, Solar BC boundary conditions"},"content":{"rendered":"

<p class=”MsoNormal”>Dear AG Sir,<\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-ansi-language: EN-US;”>Thank you for the help and guiding me, I managed to calculate Absorption Coefficients based on Beer- lambert law. <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-ansi-language: EN-US;”>a<\/span><sub><span style=”font-size: 10.5pt; line-height: 107%; font-family: ‘Cambria’,serif; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white;”>λ<\/span><\/sub><\/strong><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; font-family: ‘Cambria’,serif; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”> = <\/span><\/strong><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>[-ln(tau)\/d]; where <span style=”mso-spacerun: yes;”> <\/span>tau = transmittance and d = thickness<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-ansi-language: EN-US;”>a<\/span><sub><span style=”font-size: 10.5pt; line-height: 107%; font-family: ‘Cambria’,serif; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white;”>λ<\/span><\/sub><\/strong><sub><span style=”font-size: 10.5pt; line-height: 107%; font-family: ‘Cambria’,serif; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”> <\/span><\/sub><\/strong><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; font-family: ‘Cambria’,serif; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>for bottom and top window glasses are : <\/strong><\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>band 1 = 21.07 m<sup>-1<\/sup>; <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>band 2 = band 3 = band 4 = 1842 m<sup>-1<\/sup> <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>since I assume tau = 0.1 in band 1, tau = 0.0001 for band 2 to band 4. <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>Refractive Index I choose 1.5 for all the bands in a regular window glass. <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>———————————-<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-ansi-language: EN-US;”>a<\/span><sub><span style=”font-size: 10.5pt; line-height: 107%; font-family: ‘Cambria’,serif; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white;”>λ<\/span><\/sub><\/strong><sub><span style=”font-size: 10.5pt; line-height: 107%; font-family: ‘Cambria’,serif; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”> <\/span><\/sub><\/strong><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; font-family: ‘Cambria’,serif; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>for bottom and top ZnS glasses are : <\/strong><\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>band 1 = band 2 = band 3 = 57.5 m<sup>-1<\/sup><\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”><span style=”mso-spacerun: yes;”> <\/span>band 4 = 1842 m<sup>-1<\/sup> <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>since I assume tau = 0.75 in band 1, band 2 and band 3; and in band 4 = 0.0001 <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>Refractive Index I choose. Band 1 = 2.2, band 2 = 2.2, band 3 = 2.2 and band 4 = 1.5 [this is from manufacturer data sheet). <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”> <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>I would still request your help in understanding in assuming the diffuse fractions for <\/span><\/p><p class=”MsoListParagraphCxSpFirst” style=”text-indent: -18.0pt; mso-list: l0 level1 lfo1;”><!– [if !supportLists]–><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; color: #1f1f1f; mso-ansi-language: EN-US;”><span style=”mso-list: Ignore;”>·<span style=”font: 7.0pt ‘Times New Roman’;”>         <\/span><\/span><\/span><!–[endif]–><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>top side window glass, Top side ZnS glass from band 1 to band 4 —–> exposed to solar<\/span><\/p><p class=”MsoListParagraphCxSpLast” style=”text-indent: -18.0pt; mso-list: l0 level1 lfo1;”><!– [if !supportLists]–><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; color: #1f1f1f; mso-ansi-language: EN-US;”><span style=”mso-list: Ignore;”>·<span style=”font: 7.0pt ‘Times New Roman’;”>         <\/span><\/span><\/span><!–[endif]–><span lang=”EN-US” style=”font-size: 10.5pt; line-height: 107%; mso-bidi-font-family: Cambria; color: #1f1f1f; background: white; mso-ansi-language: EN-US;”>bottom side window glass , bottom side ZnS glass from band 1 to band 4. —–> not exposed to solar. <\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-ansi-language: EN-US;”>Can you please enlighten me in setting diffuse fraction values in band 1 to band 4?<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-ansi-language: EN-US;”>Thank you Sir.<\/span><\/p><\/p>\n","protected":false},"template":"","class_list":["post-393623","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/393623","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/393623\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=393623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}