{"id":1526,"date":"2024-02-07T15:09:47","date_gmt":"2024-02-07T12:09:47","guid":{"rendered":"https:\/\/www.pexa.com.tr\/?page_id=1526"},"modified":"2026-10-17T10:44:49","modified_gmt":"2026-10-17T07:44:49","slug":"gizli-gunes","status":"publish","type":"page","link":"https:\/\/www.pexa.com.tr\/en\/gizli-gunes\/","title":{"rendered":"Hidden Sun"},"content":{"rendered":"<link rel=\"stylesheet\" href=\"https:\/\/fonts.googleapis.com\/css2?family=Bricolage+Grotesque:opsz,wght@12..96,500..800&#038;family=IBM+Plex+Mono:wght@400;500&#038;family=IBM+Plex+Sans:wght@400;500;600&#038;display=swap\">\n<style>\n#px{--paper:#F4F4F8;--surface:#fff;--ink:#16182B;--ink-2:#3A3D57;--muted:#62657C;--line:#DCDDE7;--tech:#2B2E7E;--hot:#D9580F;--hot-soft:#FCEEE4;--bio:#1E7F68;--bio-soft:#E2F2EC;--sun:#E8A317;--sun-soft:#FDF3DC;--f-display:\"Bricolage Grotesque\",\"Segoe UI\",system-ui,sans-serif;--f-body:\"IBM Plex Sans\",\"Segoe UI\",system-ui,sans-serif;--f-mono:\"IBM Plex 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h3{color:#fff;font-size:clamp(24px,2.6vw,32px)}\n#px .tower p{color:rgba(255,255,255,.78);font-size:15px}\n#px .tower dl{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:6px 0 0}\n#px .tower dt{font:500 11.5px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.55)}\n#px .tower dd{margin:2px 0 0;font:700 22px\/1.1 var(--f-display);color:#fff}\n#px .tower small{font:400 12px var(--f-mono);color:rgba(255,255,255,.55)}\n#px .cta{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;background:var(--ink);border-radius:20px;padding:clamp(22px,4vw,36px)}\n#px .cta h2{color:#F4F4F8;font-size:clamp(24px,3vw,34px);margin:0}\n#px .btn{display:inline-flex;align-items:center;gap:10px;padding:13px 20px;border-radius:999px;font:600 15px\/1 var(--f-body);text-decoration:none;border:1.5px solid transparent}\n#px .btn-hot{background:var(--hot);color:#fff}\n#px .btn-line{border-color:rgba(244,244,248,.3);color:#F4F4F8}\n#px .acts{display:flex;flex-wrap:wrap;gap:12px}\n@media (max-width:980px){#px .split{grid-template-columns:1fr}#px .stats{grid-template-columns:1fr 1fr}#px .stat:nth-child(3){border-left:0}#px .stat:nth-child(n+3){border-top:1px solid var(--line)}#px .tower dl{grid-template-columns:1fr 1fr}}\n@media (max-width:620px){#px .stats,#px .ways{grid-template-columns:1fr}#px .stat+.stat{border-left:0;border-top:1px solid var(--line)}}\n<\/style>\n<div id=\"px\">\n<section class=\"bhero\"><div class=\"wrap\">\n<p class=\"label\">Media \u00b7 underfloor heating<\/p>\n<h1>A hidden sun: <em>under your feet.<\/em><\/h1>\n<p class=\"lead\">A silent system that creates no draughts and gives half of its heat by radiation, like the sun: underfloor heating.<\/p>\n<div class=\"stats\">\n<div class=\"stat\"><b>17\u201324<small>\u00b0C<\/small><\/b><span>Room temperature<\/span><\/div>\n<div class=\"stat\"><b>\u2264 29<small>\u00b0C<\/small><\/b><span>Floor surface \u00b7 EN 1264<\/span><\/div>\n<div class=\"stat\"><b>35\/30<small>\u00b0C<\/small><\/b><span>Flow\/return water<\/span><\/div>\n<div class=\"stat\"><b>~%50<small>radiation<\/small><\/b><span>Share of heat delivered by radiation<\/span><\/div>\n<\/div><\/div><\/section>\n<section class=\"sec-w\"><div class=\"wrap\">\n<p class=\"label\">Three paths \u00b7 one surface<\/p>\n<h2>Heat reaches you <em>by three paths<\/em> .<\/h2>\n<div class=\"ways\">\n<div class=\"way sun\"><span class=\"ico\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\"><circle cx=\"12\" cy=\"12\" r=\"4\"\/><path d=\"M12 2v2M12 20v2M2 12h2M20 12h2M4.9 4.9l1.4 1.4M17.7 17.7l1.4 1.4M4.9 19.1l1.4-1.4M17.7 6.3l1.4-1.4\"\/><\/svg><\/span><span class=\"code\">RADIATION<\/span><h3>Like the sun<\/h3><p>It heats you and the surfaces around you, not the air.<\/p><\/div>\n<div class=\"way\"><span class=\"ico\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\"><path d=\"M4 20h16M7 20v-6M12 20v-9M17 20v-6\"\/><\/svg><\/span><span class=\"code\">CONDUCTION<\/span><h3>By touch<\/h3><p>The moment your foot touches the warm floor, heat passes directly.<\/p><\/div>\n<div class=\"way\"><span class=\"ico\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\"><path d=\"M6 20c0-4 4-4 4-8s-4-4-4-8M14 20c0-4 4-4 4-8s-4-4-4-8\"\/><\/svg><\/span><span class=\"code\">CONVECTION<\/span><h3>Gentle air<\/h3><p>Slowly rising warm air; it raises no dust and makes no noise.<\/p><\/div>\n<\/div><\/div><\/section>\n<section><div class=\"wrap split\">\n<div>\n<p class=\"label\">Data evidence \u00b7 vertical temperature<\/p>\n<h2>Warm feet, <em>cool head.<\/em><\/h2>\n<p class=\"lead\">One of the ISO 7730 comfort criteria is keeping the temperature difference between feet and head small. Underfloor heating is the system closest to the ideal curve; radiators pile the heat up at the ceiling.<\/p>\n<\/div>\n<figure class=\"chart\">\n<div class=\"legend\"><span><i style=\"background:#16182B\"><\/i>Ideal<\/span><span><i style=\"background:#D9580F\"><\/i>Underfloor heating<\/span><span><i style=\"background:#9A1B4A\"><\/i>Radiator<\/span><\/div>\n<svg viewbox=\"0 0 500 320\" role=\"img\" aria-label=\"Temperature profile by room height: underfloor heating is close to the ideal profile; with radiators the ceiling is hot and the floor cold\">\n<g font-family=\"IBM Plex Mono,monospace\" font-size=\"11\" fill=\"#62657C\">\n<line x1=\"60\" y1=\"290\" x2=\"480\" y2=\"290\" stroke=\"#DCDDE7\"\/><line x1=\"60\" y1=\"30\" x2=\"60\" y2=\"290\" stroke=\"#DCDDE7\"\/>\n<line x1=\"60\" y1=\"126.3\" x2=\"480\" y2=\"126.3\" stroke=\"#EEEEF4\" stroke-dasharray=\"4 4\"\/><text x=\"476\" y=\"120\" text-anchor=\"end\">head \u00b7 1.7 m<\/text>\n<line x1=\"60\" y1=\"280.4\" x2=\"480\" y2=\"280.4\" stroke=\"#EEEEF4\" stroke-dasharray=\"4 4\"\/><text x=\"476\" y=\"275\" text-anchor=\"end\">feet \u00b7 0.1 m<\/text>\n<text x=\"60\" y=\"308\" text-anchor=\"middle\">16<\/text><text x=\"200\" y=\"308\" text-anchor=\"middle\">20<\/text><text x=\"340\" y=\"308\" text-anchor=\"middle\">24<\/text><text x=\"480\" y=\"308\" text-anchor=\"middle\">28 \u00b0C<\/text>\n<text x=\"52\" y=\"294\" text-anchor=\"end\">0<\/text><text x=\"52\" y=\"34\" text-anchor=\"end\">2.7 m<\/text>\n<\/g>\n<polyline points=\"340,280.4 270,232.2 200,126.3 182.5,30\" fill=\"none\" stroke=\"#16182B\" stroke-width=\"2.5\" stroke-dasharray=\"6 5\"\/>\n<polyline points=\"375,290 270,280.4 235,232.2 217.5,126.3 200,30\" fill=\"none\" stroke=\"#D9580F\" stroke-width=\"4\" stroke-linejoin=\"round\" stroke-linecap=\"round\"\/>\n<polyline points=\"147.5,290 182.5,280.4 235,232.2 287.5,126.3 375,30\" fill=\"none\" stroke=\"#9A1B4A\" stroke-width=\"4\" stroke-linejoin=\"round\" stroke-linecap=\"round\"\/>\n<\/svg>\n<figcaption>Typical vertical temperature profiles \u00b7 schematic<\/figcaption>\n<\/figure>\n<\/div><\/section>\n<section class=\"sec-w\"><div class=\"wrap split\" style=\"align-items:start\">\n<div>\n<p class=\"label\">History<\/p>\n<h2>A two-thousand-year-old idea, <em>a new material.<\/em><\/h2>\n<ul class=\"timeline\" style=\"margin-top:28px\">\n<li><div class=\"y\">1st century BC<\/div><h4>The Roman hypocaust<\/h4><p>An underfloor heating tradition that reaches the hammams of Anatolia.<\/p><\/li>\n<li><div class=\"y\">1933<\/div><h4>Polyethylene<\/h4><p>Obtained for the first time with high pressure.<\/p><\/li>\n<li><div class=\"y\">Mid-1960s<\/div><h4>The Engel method<\/h4><p>Thomas Engel cross-links polyethylene: PEX-a.<\/p><\/li>\n<li><div class=\"y\">1972<\/div><h4>Munich Olympic Stadium<\/h4><p>PEX-a pipe is laid under the stadium pitch.<\/p><\/li>\n<li><div class=\"y\">1986<\/div><h4>ISIYER<\/h4><p>Underfloor heating gets a strong start in T\u00fcrkiye.<\/p><\/li>\n<li><div class=\"y\">1990s<\/div><h4>TABS<\/h4><p>Pipes in the concrete core: heating and cooling together.<\/p><\/li>\n<li class=\"now\"><div class=\"y\">Today<\/div><h4>Bioiklim<\/h4><p>Heating, cooling and hot water in a single radiant system.<\/p><\/li>\n<\/ul>\n<\/div>\n<div class=\"tower\">\n<p class=\"label\">On a skyscraper scale \u00b7 example<\/p>\n<h3>Pearl River Tower<\/h3>\n<p>Offices cooled by radiant ceilings, solar panels built into the fa\u00e7ade and wind turbines fed by the shape of the building. One of the largest-scale examples of a radiant surface.<\/p>\n<dl><div><dt>City<\/dt><dd>Guangzhou<\/dd><\/div><div><dt>Year<\/dt><dd>2011<\/dd><\/div><div><dt>Floors<\/dt><dd>71<\/dd><\/div><div><dt>Target<\/dt><dd>~%58<\/dd><\/div><\/dl>\n<small>Design: SOM \u00b7 58%: projected energy savings compared with similar buildings (CTBUH, 2008)<\/small>\n<\/div>\n<\/div><\/section>\n<section><div class=\"wrap\"><div class=\"cta\"><h2>Let&#8217;s bring the hidden sun into your home.<\/h2><div class=\"acts\"><a class=\"btn btn-hot\" href=\"https:\/\/www.pexa.com.tr\/en\/iletisim\/#form\">Request a quote<\/a><a class=\"btn btn-line\" href=\"https:\/\/www.pexa.com.tr\/en\/bioiklim\/\">Bioiklim<\/a><\/div><\/div><\/div><\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Medya \u00b7 yerden \u0131s\u0131tma Gizli g\u00fcne\u015f: aya\u011f\u0131n\u0131z\u0131n alt\u0131nda. Sessiz, hava ak\u0131m\u0131 yaratmayan, \u0131s\u0131s\u0131n\u0131n yar\u0131s\u0131n\u0131 g\u00fcne\u015f gibi \u0131\u015f\u0131n\u0131mla veren bir sistem: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","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-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-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-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-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-gradient":""}},"footnotes":""},"_links":{"self":[{"href":"https:\/\/www.pexa.com.tr\/en\/wp-json\/wp\/v2\/pages\/1526"}],"collection":[{"href":"https:\/\/www.pexa.com.tr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.pexa.com.tr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.pexa.com.tr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pexa.com.tr\/en\/wp-json\/wp\/v2\/comments?post=1526"}],"version-history":[{"count":12,"href":"https:\/\/www.pexa.com.tr\/en\/wp-json\/wp\/v2\/pages\/1526\/revisions"}],"predecessor-version":[{"id":2102,"href":"https:\/\/www.pexa.com.tr\/en\/wp-json\/wp\/v2\/pages\/1526\/revisions\/2102"}],"wp:attachment":[{"href":"https:\/\/www.pexa.com.tr\/en\/wp-json\/wp\/v2\/media?parent=1526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}