{"id":13075,"date":"2026-10-22T09:23:19","date_gmt":"2026-10-22T07:23:19","guid":{"rendered":"https:\/\/templari.com\/saadan-virker-en-varmepumpe\/"},"modified":"2026-10-26T12:39:52","modified_gmt":"2026-10-26T11:39:52","slug":"saadan-virker-en-varmepumpe","status":"publish","type":"post","link":"https:\/\/templari.com\/da\/news\/saadan-virker-en-varmepumpe\/","title":{"rendered":"Hvordan virker en varmepumpe: varmen produceres ikke, den flyttes"},"content":{"rendered":"<div id=\"aa\">\n<style>body:has(#aa){overflow:visible!important;overflow-x:clip!important}body:has(#aa) .featured-media-under-header{display:none!important}body:has(#aa) .container-wrap{padding:0!important;background:#000!important}body:has(#aa) .container-wrap .main-content,body:has(#aa) .main-content>.row,body:has(#aa) .post-area,body:has(#aa) article.post,body:has(#aa) article .inner-wrap,body:has(#aa) .post-content,body:has(#aa) 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summary{list-style:none;cursor:pointer;font-size:19px;font-weight:600;color:#fff;display:flex;justify-content:space-between;gap:18px}#aa .chiara summary{color:#051822}#aa summary::-webkit-details-marker{display:none}#aa summary:after{content:\"+\";color:#0BABE4;font-size:26px;line-height:1;font-weight:400}#aa .chiara summary:after{color:#05587a}#aa details[open] summary:after{content:\"\\2212\"}#aa details p{margin:12px 0 0}#aa .larga,#aa .fine .wrap{max-width:1160px}@media(min-width:1000px){#aa .duo .larga{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:56px;align-items:start}#aa .duo.inv .testo{order:2}#aa .duo .foto{position:sticky;top:190px}#aa .duo .foto figure{margin:0 0 26px}#aa .duo .foto figure:last-child{margin-bottom:0}#aa .duo .foto img{max-height:72vh}#aa .duo.senza .larga{grid-template-columns:minmax(0,1fr) minmax(0,1.6fr)}#aa .duo.senza .testa{position:sticky;top:190px}}body:has(#aa) #header-outer{background:#000!important}#aa .fine{padding:36px 0 52px}#aa .fine p{font-size:16px}@media(max-width:820px){#aa{font-size:18px}#aa p,#aa li{font-size:18px}#aa .hero{min-height:auto}#aa .hero .in{padding:96px 20px 32px}#aa .lead{font-size:18px}#aa .sec{padding:40px 0}#aa .wrap{padding:0 20px}#aa .subnav{top:64px}#aa .faq .wrap{grid-template-columns:1fr;gap:8px}}<\/style>\n<section class=\"hero\" style=\"background-image:url(https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/p9-kita-air-officina-meccanica-2-5.jpg)\">\n<div class=\"in\"><span class=\"badge\">Tekniske tips<\/span><\/p>\n<h1>Hvordan virker en varmepumpe: varmen produceres ikke, den flyttes<\/h1>\n<p class=\"lead\">En kedel br\u00e6nder gas for at producere varme. En varmepumpe producerer ikke varme: Den henter den i udeluften, ogs\u00e5 om vinteren, og bringer den ind. Str\u00f8mmen bruges kun til at flytte den; derfor afgiver maskinen mere varmeenergi, end den bruger af elektrisk energi. Hvor meget mere, viser COP, som p\u00e5 vores maskiner kan afl\u00e6ses p\u00e5 displayet.<\/p>\n<\/div>\n<\/section>\n<div class=\"subnav\">\n<nav><a href=\"#s1\">K\u00f8lemidlets fire trin<\/a><a href=\"#s2\">Om sommeren vender kredsl\u00f8bet<\/a><a href=\"#s3\">Hvorfor den yder mindre, n\u00e5r det bliver koldere<\/a><a href=\"#s4\">Afrimning: kun n\u00e5r det er n\u00f8dvendigt<\/a><a href=\"#s5\">Ofte stillede sp\u00f8rgsm\u00e5l<\/a><\/nav>\n<\/div>\n<section class=\"sec chiara\">\n<div class=\"wrap\">\n<p>Transporten klares af et k\u00f8lemiddel, der cirkulerer i et lukket kredsl\u00f8b og g\u00e5r gennem fire trin. Vi forklarer dem med en Kita Air, der opvarmer en hal.<\/p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/ciclo-pompa-di-calore-kita-air-en.jpg\" class=\"lazyload\" alt=\"Vinterkredsl\u00f8bet i varmepumpen Kita Air: fordampning, kompression, kondensering, ekspansion\" width=\"1672\" height=\"941\"><noscript><img decoding=\"async\" src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/ciclo-pompa-di-calore-kita-air-en.jpg\" alt=\"Vinterkredsl\u00f8bet i varmepumpen Kita Air: fordampning, kompression, kondensering, ekspansion\" width=\"1672\" height=\"941\"><\/noscript><figcaption>Vinterkredsl\u00f8bet i varmepumpen Kita Air: fordampning, kompression, kondensering, ekspansion.<\/figcaption><\/figure>\n<\/div>\n<\/section>\n<section id=\"s1\" class=\"sec duo senza\">\n<div class=\"wrap larga\">\n<div class=\"testa\">\n<p class=\"num\">01<\/p>\n<h2>K\u00f8lemidlets fire trin<\/h2>\n<\/div>\n<div class=\"testo\">\n<p><strong>1. Fordampning.<\/strong> I udedelens lamelveksler kommer k\u00f8lemidlet ind koldere end luften. Det fordamper, ligesom kogende vand, og mens det fordamper, optager det varmen fra den luft, som ventilatoren bl\u00e6ser igennem. Det virker ogs\u00e5 under nul: K\u00f8lemidlet skal bare v\u00e6re koldere end luften.<\/p>\n<p><strong>2. Kompression.<\/strong> Kompressoren suger gassen ind og komprimerer den: Tryk og temperatur stiger, til den er langt varmere end luften i hallen.<\/p>\n<p><strong>3. Kondensering.<\/strong> Den varme gas n\u00e5r indedelen og afgiver sin varme til den luft, som ventilatoren bl\u00e6ser nedad, hvor der arbejdes. N\u00e5r den afgiver varme, bliver den flydende igen.<\/p>\n<p><strong>4. Ekspansion.<\/strong> V\u00e6sken g\u00e5r tilbage til udedelen og passerer ekspansionsventilen: Den mister tryk, k\u00f8les ned og er klar til at fordampe igen. P\u00e5 vores maskiner er ventilen altid elektronisk. Den styres af styreprintet, som l\u00e6ser f\u00f8lerne og lukker pr\u00e6cis s\u00e5 meget k\u00f8lemiddel ind i veksleren, som kan fordampe, \u00f8jeblik for \u00f8jeblik. En mekanisk ventil f\u00f8lger ikke \u00e6ndringer i temperatur og belastning lige s\u00e5 pr\u00e6cist.<\/p>\n<p>P\u00e5 tegningen er kompressoren vist \u00f8verst for overskuelighedens skyld. I maskinen sidder den i udedelen sammen med veksleren og ventilen.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s2\" class=\"sec duo senza chiara\">\n<div class=\"wrap larga\">\n<div class=\"testa\">\n<p class=\"num\">02<\/p>\n<h2>Om sommeren vender kredsl\u00f8bet<\/h2>\n<\/div>\n<div class=\"testo\">\n<p>Den samme maskine k\u00f8ler. De to vekslere bytter opgaver: Den indvendige optager varme fra hallen, den udvendige sender den ud. Hvorfor et airconditionanl\u00e6g, der ogs\u00e5 varmer om vinteren, ikke er en varmepumpe, forklarede vi i <a href=\"https:\/\/templari.com\/da\/news\/aircondition-eller-varmepumpe-forskel\/\" rel=\"noreferrer\">tippet om aircondition<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s3\" class=\"sec duo\">\n<div class=\"wrap larga\">\n<div class=\"testo\">\n<p class=\"num\">03<\/p>\n<h2>Hvorfor den yder mindre, n\u00e5r det bliver koldere<\/h2>\n<p>Kompressoren skal arbejde h\u00e5rdere, jo st\u00f8rre afstanden er mellem den temperatur, k\u00f8lemidlet fordamper ved udenfor, og den, det kondenserer ved indenfor. Ved -7 \u00b0C udeluft er afstanden st\u00f8rre end ved +7 \u00b0C, og COP falder. Det er den lov, Carnot skrev for to \u00e5rhundreder siden: Ingen virkelig maskine n\u00e5r hans gr\u00e6nse, men forl\u00f8bet er det samme.<\/p>\n<p>Derfor bed\u00f8mmer man ikke en varmepumpe p\u00e5 den nominelle COP, men p\u00e5 hvad den g\u00f8r om vinteren. Veksleren og kompressoren er afg\u00f8rende:<\/p>\n<ul>\n<li>en stor veksler, der f\u00e5r k\u00f8lemidlet til at fordampe t\u00e6t p\u00e5 lufttemperaturen, som forklaret i <a href=\"https:\/\/templari.com\/da\/news\/varmepumpe-lamelafstand-afrimning\/\" rel=\"noreferrer\">tippet om lamellerne<\/a>;<\/li>\n<li>en kompressor bygget til store temperaturl\u00f8ft, som forklaret i <a href=\"https:\/\/templari.com\/da\/news\/varmepumpe-kompressor-rotation-eller-scroll\/\" rel=\"noreferrer\">tippet om scrollkompressorer<\/a>.<\/li>\n<\/ul>\n<\/div>\n<div class=\"foto\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/pompa-di-calore-kwh-corrente-aria-cop-da.jpg\" class=\"lazyload\" alt=\"\u00c9n kWh str\u00f8m, resten kommer fra luften. Jo koldere luften er, jo mindre varme kan man tage fra den: derfor falder COP om vinteren\" width=\"760\" height=\"692\" loading=\"lazy\"><noscript><img decoding=\"async\" src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/pompa-di-calore-kwh-corrente-aria-cop-da.jpg\" alt=\"\u00c9n kWh str\u00f8m, resten kommer fra luften. Jo koldere luften er, jo mindre varme kan man tage fra den: derfor falder COP om vinteren\" width=\"760\" height=\"692\" loading=\"lazy\"><\/noscript><figcaption>\u00c9n kWh str\u00f8m, resten kommer fra luften. Jo koldere luften er, jo mindre varme kan man tage fra den: derfor falder COP om vinteren.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s4\" class=\"sec duo senza chiara\">\n<div class=\"wrap larga\">\n<div class=\"testa\">\n<p class=\"num\">04<\/p>\n<h2>Afrimning: kun n\u00e5r det er n\u00f8dvendigt<\/h2>\n<\/div>\n<div class=\"testo\">\n<p>Om vinteren arbejder udeveksleren under nul, og luftens fugt s\u00e6tter sig p\u00e5 den som rim. S\u00e5 l\u00e6nge der er lidt rim, varmer maskinen normalt. N\u00e5r veksleren er fyldt, kan luften ikke l\u00e6ngere komme igennem, og maskinen skal smelte isen med varme fra hallen.<\/p>\n<p>Mange varmepumper afrimer efter tid, hvert s\u00e5 mange minutter, eller s\u00e5 snart veksleren kommer under en bestemt temperatur. Derfor afrimer de ogs\u00e5, n\u00e5r veksleren n\u00e6sten er ren, og hver un\u00f8dvendig afrimning er varme, der tages fra bygningen, og tid, hvor maskinen ikke varmer.<\/p>\n<p>Vores afrimer kun, n\u00e5r det virkelig er n\u00f8dvendigt: n\u00e5r veksleren er fuld af rim, og varmeudvekslingen med luften er faldet under en bestemt gr\u00e6nse. Det m\u00e5ler styreprintet, ikke et ur. Det er vores afrimningssystem, patenteret. Mere plads mellem lamellerne betyder ogs\u00e5 mere rim, f\u00f8r gr\u00e6nsen n\u00e5s, og dermed f\u00e6rre afrimninger, som forklaret i <a href=\"https:\/\/templari.com\/da\/news\/varmepumpe-tidsstyret-eller-behovsstyret-afrimning\/\" rel=\"noreferrer\">tippet om afrimning<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s5\" class=\"sec faq\">\n<div class=\"wrap\">\n<div>\n<p class=\"num\">05<\/p>\n<h2>Ofte stillede sp\u00f8rgsm\u00e5l<\/h2>\n<\/div>\n<div>\n<details>\n<summary>Hvordan virker en varmepumpe, forklaret enkelt?<\/summary>\n<p>Den laver ikke varme: den henter den fra udeluften og bringer den ind med et k\u00f8lemiddel, der i et lukket kredsl\u00f8b fordamper, komprimeres, kondenserer og ekspanderer. Str\u00f8mmen driver kun kredsl\u00f8bet.<\/p>\n<\/details>\n<details>\n<summary>Virker en varmepumpe under nul grader?<\/summary>\n<p>Ja: k\u00f8lemidlet i udedelens flade skal bare v\u00e6re koldere end luften. N\u00e5r det bliver koldere, vokser temperaturl\u00f8ftet, og COP falder.<\/p>\n<\/details>\n<details>\n<summary>Hvorfor yder en varmepumpe mindre i kulde?<\/summary>\n<p>Kompressoren skal arbejde h\u00e5rdere, jo st\u00f8rre afstanden er mellem fordampningstemperaturen ude og kondenseringstemperaturen inde: ved -7 \u00b0C er den st\u00f8rre end ved +7 \u00b0C.<\/p>\n<\/details>\n<details>\n<summary>Kan den samme varmepumpe k\u00f8le om sommeren?<\/summary>\n<p>Ja: kredsl\u00f8bet vendes, og de to flader bytter opgave. Den indend\u00f8rs tager varme fra rummene, den udend\u00f8rs sender den ud.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"fine chiara\">\n<div class=\"wrap\">\n<p class=\"tpl-vedi-anche\"><strong>Se ogs\u00e5:<\/strong> <a href=\"https:\/\/templari.com\/da\/news\/varmepumpe-med-radiatorer-virker-det\/\" rel=\"noreferrer\">Radiatorer til varmepumpe: virker det? Ja, og bedre med propan<\/a> \u00b7 <a href=\"https:\/\/templari.com\/da\/news\/hvor-meget-stroem-bruger-en-varmepumpe\/\" rel=\"noreferrer\">Hvor meget str\u00f8m bruger en varmepumpe: pr. dag, pr. \u00e5r og pr. st\u00f8rrelse, med tallene fra databladene<\/a> \u00b7 <a href=\"https:\/\/templari.com\/da\/news\/cop-varmepumpe\/\" rel=\"noreferrer\">Varmepumpens COP: hvad det er, hvordan det m\u00e5les, og hvorfor det ikke er det samme i t\u00e5gen<\/a> \u00b7 <a href=\"https:\/\/templari.com\/da\/news\/bedste-luft-til-vand-varmepumpe\/\" rel=\"noreferrer\">Bedste luft til vand varmepumpe: 10 ting at tjekke, f\u00f8r du k\u00f8ber<\/a> \u00b7 <a href=\"https:\/\/templari.com\/da\/news\/varmepumpe-koeling\/\" rel=\"noreferrer\">K\u00f8ling med varmepumpe: gulvk\u00f8ling eller ventilatorkonvektorer, virkningsgrad og hvad der skal til<\/a> \u00b7 <a href=\"https:\/\/templari.com\/da\/news\/jordvarme-eller-luft-til-vand\/\" rel=\"noreferrer\">Jordvarme eller luft til vand-varmepumpe: forbrug, pris og levetid sammenlignet<\/a><\/p>\n<p><em>Alle tekniske tips findes p\u00e5 <a href=\"https:\/\/templari.com\/da\/tekniske-tips\/\" rel=\"noreferrer\">seriens side<\/a>. Det n\u00e6ste om to uger.<\/em><\/p>\n<\/div>\n<\/section>\n<\/div>\n<p><script>(function(){var a=[].slice.call(document.querySelectorAll('#aa .subnav a')),n=document.querySelector('#aa .subnav'),h=document.getElementById('header-outer');function u(){if(n&&h)n.style.top=Math.max(0,h.getBoundingClientRect().bottom)+'px';var y=window.scrollY+200,c=null;a.forEach(function(l){var s=document.querySelector(l.getAttribute('href'));if(s&&s.offsetTop<=y)c=l});a.forEach(function(l){l.classList.toggle('on',l===c)});if(c&#038;&#038;c!==u.c){u.c=c;c.parentNode.scrollTo({left:c.offsetLeft-20,behavior:'smooth'})}}window.addEventListener('scroll',function(){u();setTimeout(u,400)},{passive:true});u()})();<\/script><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Hvordan virker en varmepumpe, forklaret enkelt?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Den laver ikke varme: den henter den fra udeluften og bringer den ind med et k\\u00f8lemiddel, der i et lukket kredsl\\u00f8b fordamper, komprimeres, kondenserer og ekspanderer. Str\\u00f8mmen driver kun kredsl\\u00f8bet.\"}}, {\"@type\": \"Question\", \"name\": \"Virker en varmepumpe under nul grader?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Ja: k\\u00f8lemidlet i udedelens flade skal bare v\\u00e6re koldere end luften. N\\u00e5r det bliver koldere, vokser temperaturl\\u00f8ftet, og COP falder.\"}}, {\"@type\": \"Question\", \"name\": \"Hvorfor yder en varmepumpe mindre i kulde?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Kompressoren skal arbejde h\\u00e5rdere, jo st\\u00f8rre afstanden er mellem fordampningstemperaturen ude og kondenseringstemperaturen inde: ved -7 \\u00b0C er den st\\u00f8rre end ved +7 \\u00b0C.\"}}, {\"@type\": \"Question\", \"name\": \"Kan den samme varmepumpe k\\u00f8le om sommeren?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Ja: kredsl\\u00f8bet vendes, og de to flader bytter opgave. Den indend\\u00f8rs tager varme fra rummene, den udend\\u00f8rs sender den ud.\"}}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tekniske tips Hvordan virker en varmepumpe: varmen produceres ikke, den flyttes En kedel br\u00e6nder gas for at producere varme. En varmepumpe producerer ikke varme: Den henter den i udeluften, ogs\u00e5&#8230;<\/p>\n","protected":false},"author":3,"featured_media":14444,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_meta-robots-noindex":"","footnotes":""},"categories":[212],"tags":[],"class_list":["post-13075","post","type-post","status-publish","format-standard","has-post-thumbnail","category-tekniske-tips"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hvordan virker en varmepumpe: kredsl\u00f8bet forklaret | Templari<\/title>\n<meta name=\"description\" content=\"Hvordan virker en varmepumpe? Den producerer ikke varme, den flytter den fra udeluften ind. 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