{"id":5712,"date":"2008-03-03T00:51:35","date_gmt":"2008-03-03T00:51:35","guid":{"rendered":"https:\/\/ja.modelondev.com\/support\/controller-development-for-an-automotive-ac-system-using-r744-as-refrigerant\/"},"modified":"2023-03-02T16:06:59","modified_gmt":"2023-03-02T16:06:59","slug":"controller-development-for-an-automotive-ac-system-using-r744-as-refrigerant","status":"publish","type":"support","link":"https:\/\/modelon.com\/ja\/support\/controller-development-for-an-automotive-ac-system-using-r744-as-refrigerant\/","title":{"rendered":"Controller Development for an Automotive AC-system using R744 as Refrigerant"},"content":{"rendered":"<h4><strong>KARIM, S. AND TUMMESCHEIT H.<\/strong><\/h4>\n<h4><strong>MARCH 3, 2008<\/strong><\/h4>\n<p><em>Proceedings of the 6th International Modelica Conference<\/em><br \/>\nBielefeld, Germany, pp. 477-485<\/p>\n<h4>Introduction<\/h4>\n<div>Under the Kyoto protocol agreement, by the year 2012, industrialized countries have to reduce their collective emissions of greenhouse gas 5% below their 1990 levels. Since the current refrigerant used in vehicles, R134a, has a GWP (Global Warming Potential) of 1410, R744 (CO2) technology has been proposed as a natural alternative to current R134a-based systems. The main benefits of R744 as a refrigerant are:<\/div>\n<div><\/div>\n<div>\u2022 Energy-efficient<\/div>\n<div>\u2022 Non-toxic<\/div>\n<div>\u2022 Non-flammable<\/div>\n<div>\u2022 No ozone depletion potential (ODP=0)<\/div>\n<div>\u2022 Low global warming potential (GWP=1)<\/div>\n<div><\/div>\n<div>\n    <div class=\"prop-button prop-button__shortcode\">\n\t    \n\t\t<a class=\"button button--solid-primary\" href=\"https:\/\/modelica.org\/events\/modelica2008\/Proceedings\/sessions\/session4c2.pdf\" >Read Full Article<\/a>\n\n\t\t\t<\/div>\n\n\t<\/div>\n","protected":false},"excerpt":{"rendered":"<p>KARIM, S. AND TUMMESCHEIT H. MARCH 3, 2008 Proceedings of the 6th International Modelica Conference Bielefeld, Germany, pp. 477-485 Introduction Under the Kyoto protocol agreement, by the year 2012, industrialized countries have to reduce their collective emissions of greenhouse gas 5% below their 1990 levels. Since the current refrigerant used in vehicles, R134a, has a [&hellip;]<\/p>\n","protected":false},"featured_media":5713,"template":"","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","inline_featured_image":false,"editor_notices":[]},"support_type":[117],"class_list":["post-5712","support","type-support","status-publish","has-post-thumbnail","hentry","support_industry-automotive","support_industry-hvacr","support_product-air-conditioning-library","support_type-technical-publication","support_product_group-modelon-libraries"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Controller Development for an Automotive AC-system using R744 as Refrigerant - Modelon (JA)<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/modelon.com\/ja\/support\/controller-development-for-an-automotive-ac-system-using-r744-as-refrigerant\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Controller Development for an Automotive AC-system using R744 as Refrigerant\" \/>\n<meta property=\"og:description\" content=\"KARIM, S. 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