{"id":6228,"date":"2026-10-19T09:48:39","date_gmt":"2026-10-19T09:48:39","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-efnaverkfraedi-sahar-safarianbana\/"},"modified":"2026-10-19T09:48:39","modified_gmt":"2026-10-19T09:48:39","slug":"doktorsvorn-i-efnaverkfraedi-sahar-safarianbana","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-efnaverkfraedi-sahar-safarianbana\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed efnaverkfr\u00e6\u00f0i &#8211; Sahar Safarianbana"},"content":{"rendered":"<div class=\"field-items\">\n<div class=\"field-item even\" property=\"content:encoded\">\n<p>V\u00f6rninni ver\u00f0ur streymt<\/p>\n<p><strong><\/strong><\/p>\n<p><iframe height=\"360\" width=\"640\" class=\"b-lazy\" data-src=\"https:\/\/livestream.com\/accounts\/1974613\/events\/9662862\/player?width=640&amp;height=360&amp;enableInfoAndActivity=true&amp;defaultDrawer=&amp;autoPlay=true&amp;mute=false\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\"><\/iframe><\/p>\n<p><strong>Doktorsefni:<\/strong>\u00a0Sahar Safarianbana<\/p>\n<p><strong>Heiti ritger\u00f0ar:<\/strong>\u00a0Hermun l\u00edtils g\u00f6sunarkerfis sem n\u00fdtir l\u00edfr\u00e6nan \u00fargang til orkuframlei\u00f0slu (Simulation of a Small Scale Biowaste Gasification System for Energy Production)<\/p>\n<p><strong>Andm\u00e6lendur: <\/strong>Dr. Mehrdad Boroushaki, d\u00f3sent vi\u00f0 Orkuverkfr\u00e6\u00f0ideild Sharif-t\u00e6knih\u00e1sk\u00f3lans \u00ed \u00cdran<br \/>  Dr. Wan Azlina Wan Ab Karim Ghani, d\u00f3sent vi\u00f0 Efna- og umhverfisverkfr\u00e6\u00f0ideild Putra Malaysia h\u00e1sk\u00f3lans \u00ed Malas\u00edu<\/p>\n<p><strong>Lei\u00f0beinendur:<\/strong>\u00a0Dr. R\u00fanar Unn\u00fe\u00f3rsson, pr\u00f3fessor vi\u00f0 I\u00f0na\u00f0arverkfr\u00e6\u00f0i-, v\u00e9laverkfr\u00e6\u00f0i- og t\u00f6lvunarfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands<br \/>  Dr. Christiaan Petrus Richter, pr\u00f3fessor vi\u00f0 I\u00f0na\u00f0arverkfr\u00e6\u00f0i-, v\u00e9laverkfr\u00e6\u00f0i- og t\u00f6lvunarfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>Einnig \u00ed doktorsnefnd:<\/strong><br \/>  Dr. Jukka Heinonen, pr\u00f3fessor vi\u00f0 Umhverfis- og byggingarverkfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. Helmut Neukirchen, pr\u00f3fessor og varadeildarforseti I\u00f0na\u00f0arverkfr\u00e6\u00f0i-, v\u00e9laverkfr\u00e6\u00f0i- og t\u00f6lvunarfr\u00e6\u00f0ideildar H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>\u00c1grip<\/strong><\/p>\n<p>Fj\u00f6lm\u00f6rgum sorpbrennslum \u00e1 \u00cdslandi var loka\u00f0 2011\/2012 vegna dioxin\/furanmengunar sem greindist \u00ed jar\u00f0vegi \u00e1samt kj\u00f6t- og mj\u00f3lkurafur\u00f0um. \u00cd dag hefur engin hagkv\u00e6m og umhverfisv\u00e6n lausn komi\u00f0 \u00ed sta\u00f0 sorpbrennslanna. Vegna \u00feessa er \u00f3hemju miki\u00f0 af rusli flutt \u00e1 hverju \u00e1ri me\u00f0 ruslab\u00edlum langar lei\u00f0ir eftir \u00fej\u00f3\u00f0vegum landsins (til d\u00e6mis fr\u00e1 Vestmannaeyjum til Reykjav\u00edkur e\u00f0a jafnvel til Bl\u00f6ndu\u00f3ss) til ur\u00f0unar e\u00f0a brennslu. Markmi\u00f0 \u00feessa doktorsverkefnis var a\u00f0 taka fyrstu skrefin \u00ed a\u00f0 a\u00f0laga gr\u00e6na sj\u00e1lfb\u00e6ra lausn fyrir f\u00f6rgun l\u00edfr\u00e6ns \u00fargangs \u00e1 \u00cdslandi. Lausnin sem ranns\u00f6ku\u00f0 var \u00ed verkefninu nefnist g\u00f6sun. G\u00f6sunarkerfi eru sj\u00e1lfb\u00e6r \u00fargangs-til-orku kerfi sem auk \u00feess a\u00f0 umbreyta \u00fargangi \u00ed l\u00edfeldsneyti l\u00e1gmarka losun mengandi efna. Helstu \u00e1skoranir vi\u00f0 g\u00f6sun l\u00edfr\u00e6ns \u00fargangs \u00e1 \u00cdslandi eru magn- og st\u00e6r\u00f0artakmarkanir, samsetning l\u00edfr\u00e6na \u00fargangsins og rekstrarstillingar b\u00fana\u00f0arins. Vi\u00f0 \u00fatf\u00e6rslu \u00e1 litlum g\u00f6sunareiningum \u00fearf a\u00f0 huga a\u00f0 b\u00e6\u00f0i rekstrarhagkv\u00e6mni og a\u00f0 vi\u00f0halda kostum g\u00f6sunart\u00e6kninnar fram yfir brennslu og ur\u00f0un t.a m., minni loft- og grunnvatnsmengun.<br \/>  Til \u00feess a\u00f0 takast \u00e1 vi\u00f0 \u00feessar \u00e1skoranir var \u00fatb\u00fai\u00f0 ASPEN Plus l\u00edkan af litlu g\u00f6sunarkerfi me\u00f0 sam\u00fe\u00e6ttu raforkuvinnslukerfi og \u00fea\u00f0 hermt. L\u00edkani\u00f0 hj\u00e1lpar til vi\u00f0 a\u00f0 skilja vi\u00f0 hva\u00f0a a\u00f0st\u00e6\u00f0ur og hvernig reka m\u00e1 kerfi\u00f0. Kerfisl\u00edkani\u00f0 var nota\u00f0 til a\u00f0 greina og meta kerfi\u00f0 \u00fat fr\u00e1 b\u00e6\u00f0i t\u00e6kni-hagfr\u00e6\u00f0ilegum og umhverfislegum sj\u00f3narhornum til a\u00f0 geta lagt fram r\u00e1\u00f0leggingar um hvernig a\u00f0laga megi sj\u00e1lfb\u00e6rt \u00fargangs-til-orku kerfi a\u00f0 a\u00f0st\u00e6\u00f0um \u00e1 \u00cdslandi.<br \/>  Framlag \u00feessa doktorsverkefnis til fr\u00e6\u00f0asvi\u00f0sins er aukin \u00feekking \u00e1 hermun sm\u00e6rri g\u00f6sunarkerfa \u2013 \u00e1samt mati \u00e1 frammist\u00f6\u00f0u kerfanna og rekstrarbreyta \u00feeirra \u2013 \u00ed samf\u00e9l\u00f6gum sem hafa svipa\u00f0ar \u00e1skoranir \u00ed \u00fargangsm\u00e1lum. Ni\u00f0urst\u00f6\u00f0urnar benda til \u00feess a\u00f0 raforkuframlei\u00f0sla me\u00f0 g\u00f6sun l\u00edfr\u00e6ns \u00fargangs g\u00e6ti veri\u00f0 f\u00fdsilegur, umhverfislegur og efnahagslega \u00e1s\u00e6ttanlegur valkostur \u00ed sta\u00f0 brennslu og ur\u00f0unar l\u00edfr\u00e6ns \u00fargangs \u00e1 \u00cdslandi. Af \u00feeim \u00fargangi sem var rannsaka\u00f0ur kom timbur og timbur\u00fargangur best \u00fat \u00feegar liti\u00f0 til \u00e1kve\u00f0inna \u00fe\u00e1tta. Framlei\u00f0sla \u00e1 1 kWst me\u00f0 gasgervingu timburs hefur hnatthl\u00fdnunarm\u00e1tt upp\u00e1 0,07 kg koltv\u00eds\u00fdrings\u00edgildi, s\u00farnunarm\u00e1tt upp\u00e1 0,09 kg brennisteinsd\u00edox\u00ed\u00f0\u00edgildi og ofau\u00f0gism\u00e1tt upp\u00e1 0,36 kg n\u00edtrat\u00edgildi. Ni\u00f0urst\u00f6\u00f0ur t\u00e6kni-hagfr\u00e6\u00f0ilegs mats s\u00fdna a\u00f0 hreint n\u00favir\u00f0i er j\u00e1kv\u00e6tt fyrir g\u00f6sunarkerfi sem hefur getu til a\u00f0 framlei\u00f0a yfir 45 kW. N\u00favirtur endurgrei\u00f0slut\u00edmi g\u00f6sunarkerfa me\u00f0 afkastagetu yfir 75 kW ver\u00f0ur undir tveimur \u00e1rum og fyrir kerfi me\u00f0 afkastagetu yfir 200 kW ver\u00f0ur t\u00edminn undir sex m\u00e1nu\u00f0um.<br \/>  \u00deess er einnig vert a\u00f0 geta a\u00f0 me\u00f0 sam\u00fe\u00e6ttri varma- og raforkuvinnslu (CHP) \u2013 \u00ed sta\u00f0 einungis raforkuvinnslu \u2013 \u00fe\u00e1 er h\u00e6gt a\u00f0 stytta n\u00favirta endurgrei\u00f0slut\u00edmann enn frekar (\u00fe.e. \u00e1 k\u00f6ldum sv\u00e6\u00f0um \u00fear sem ekki er a\u00f0gangur a\u00f0 \u00f3d\u00fdru hitaveituvatni) og \u00fear me\u00f0 ver\u00f0ur g\u00f6sun enn \u00e1litlegri kostur en s\u00fdnt er \u00ed \u00feessari ritger\u00f0.<\/p>\n<p><strong>Um doktorsefni\u00f0<\/strong><\/p>\n<p>Sahar Safarianbana er f\u00e6dd 1987. H\u00fan \u00fatskrifa\u00f0ist me\u00f0 BS-gr\u00e1\u00f0u \u00ed efnaverkfr\u00e6\u00f0i fr\u00e1 Ferdowsi-h\u00e1sk\u00f3lanum \u00ed \u00cdran 2005 og MS-gr\u00e1\u00f0u \u00ed orkukerfisverkfr\u00e6\u00f0i fr\u00e1 Sharif-t\u00e6knih\u00e1sk\u00f3lanum, sem er lei\u00f0andi \u00ed \u00cdran \u00e1 \u00fev\u00ed svi\u00f0i. Meistaran\u00e1mi\u00f0 \u00ed orkukerfisverkfr\u00e6\u00f0i er \u00feverfaglegt n\u00e1m \u00fear sem verkfr\u00e6\u00f0i, t\u00f6lvul\u00edkanager\u00f0 og hagfr\u00e6\u00f0i er fl\u00e9tta\u00f0 saman. Sahar h\u00f3f doktorsn\u00e1m sitt vi\u00f0 H\u00e1sk\u00f3la \u00cdslands \u00ed desember 2017.<br \/>  Ritger\u00f0 hennar sn\u00fdr a\u00f0 l\u00edkanager\u00f0 \u00e1 g\u00f6sun l\u00edfr\u00e6ns \u00fargangs til orkuframlei\u00f0slu og notkun l\u00edkana til a\u00f0 framkv\u00e6ma samanbur\u00f0argreiningu \u00e1 frammist\u00f6\u00f0u, t\u00e6kni-hagfr\u00e6\u00f0ilega greiningu og mat \u00e1 umhverfis\u00e1hrifum.<br \/>  Samhli\u00f0a doktorsverkefni s\u00ednu vann Sahar a\u00f0 ger\u00f0 l\u00edkana fyrir sj\u00e1lfb\u00e6ra birg\u00f0ake\u00f0ju \u00fdmissa tegunda l\u00edfeldsneytis, \u00fer\u00f3un hermil\u00edkana fyrir orkuframlei\u00f0slu (afl, hita og l\u00edfetan\u00f3l) me\u00f0 l\u00edfr\u00e6num \u00fargangi og a\u00f0 ger\u00f0 sj\u00e1lfb\u00e6rnimats \u00e1 notkun l\u00edf\u00fargangs til orkuframlei\u00f0slu fyrir afskekkt sv\u00e6\u00f0i. Sahar hefur einnig unni\u00f0 a\u00f0 fj\u00f6lm\u00f6rgum \u00f6\u00f0rum orkutengdum verkefnum t.a.m., \u00e1 svi\u00f0i gasflutnings, s\u00f3larorku, vetnisframlei\u00f0slu, t\u00e6kni til umbreytingu orku, orku \u00ed byggingum o.fl.<\/p>\n<\/div><\/div>","protected":false},"featured_media":4993,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_phd_date_start":"2021-05-11T09:00:00+00:00","_phd_date_end":"2021-05-11T11:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0arsalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"Hermun l\u00edtils g\u00f6sunarkerfis sem n\u00fdtir l\u00edfr\u00e6nan \u00fargang til orkuframlei\u00f0slu (Simulation of a Small Scale Biowaste Gasification System for Energy Production)","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_efnaverkfraedi_sahar_safarianbana","_phd_source_node_id":"374443","_phd_source_type":"vidburdir","_phd_member_id":752,"footnotes":""},"phd_school":[108,93],"phd_discipline":[109],"class_list":["post-6228","phd_defence","type-phd_defence","status-publish","has-post-thumbnail","hentry","phd_school-idnadarverkfraedi-velaverkfraedi-og-tolvunarfraedideild","phd_school-verkfraedi-og-natturuvisindasvid","phd_discipline-phd-i-efnaverkfraedi"],"_links":{"self":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence"}],"about":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/types\/phd_defence"}],"version-history":[{"count":0,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6228\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/4993"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6228"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6228"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}