{"id":36951,"date":"2024-10-11T14:07:53","date_gmt":"2024-10-11T12:07:53","guid":{"rendered":"https:\/\/biblus.accasoftware.com\/en\/?p=36951"},"modified":"2024-10-11T14:11:56","modified_gmt":"2024-10-11T12:11:56","slug":"reversible-heat-pump-what-it-is-and-how-it-works","status":"publish","type":"post","link":"https:\/\/biblus.accasoftware.com\/en\/reversible-heat-pump-what-it-is-and-how-it-works\/","title":{"rendered":"Reversible Heat Pump: What It Is and How It Works"},"content":{"rendered":"<p class=\"sommario\">A reversible heat pump is a device capable of heating a house in winter and cooling it in summer. Find out how it works and why it&#8217;s convenient<\/p>\n<p><!--more--><\/p>\n<p>The reversible heat pump is an essential tool for maintaining indoor comfort in a home during the summer seasons.<\/p>\n<p>These machines are becoming increasingly popular because the use of renewable energy sources and their good performance make them an excellent tool for improving the energy efficiency of the building.<\/p>\n<p>How does it work? Why is it convenient? Let&#8217;s see everything in detail!<\/p>\n<h2 id=\"what-is-a-reversible-heat-pump\">What is a reversible heat pump?<\/h2>\n<p>A heat pump is defined as reversible when it is able to provide both the <strong>heating requirement<\/strong> in the winter seasons and the <strong>cooling requirement<\/strong> in the summer seasons.<\/p>\n<p>A reversible HP operates generally through a <strong>closed circuit<\/strong> composed, similar to non-reversible solutions, by:<\/p>\n<ul>\n<li>expansion valve;<\/li>\n<li>evaporator;<\/li>\n<li>compressor;<\/li>\n<li>condenser.<\/li>\n<\/ul>\n<p>The closed circuit is traversed by a <strong>refrigerant fluid<\/strong>, capable of transitioning from a liquid to a gaseous state and vice versa depending on the temperature and pressure in which it is located.<\/p>\n<p>Unlike classic solutions, in <strong>reversible heat pumps<\/strong> the major difference is made by the presence of a <strong>four-way valve<\/strong>, which allows the reversal of the <strong>Carnot cycle<\/strong> that manages the operation of the heat pump itself.<\/p>\n<p>The direction of circulation of the refrigerant fluid is reversed, and a simple valve makes it possible for the pump to function as a refrigeration machine in summer.<\/p>\n<p>But let&#8217;s see together how a reversible heat pump works.<\/p>\n<h2 id=\"how-does-a-reversible-heat-pump-work\">How does a reversible heat pump work?<\/h2>\n<p>Going into more detail on how this machine operates, we will see that, in the heating mode:<\/p>\n<ol>\n<li>the refrigerant fluid, through the <strong>expansion valve<\/strong>, expands and cools down, reaching a lower temperature than that of the external source;<\/li>\n<li>in the second phase, the cold liquid passes through a heat exchanger, the <strong>evaporator<\/strong>. The fluid absorbs heat from the external source and changes to a vapor state;<\/li>\n<li>the gas then moves to the third phase where the <strong>compressor<\/strong> increases the gas pressure, triggering an increase in the fluid temperature. The fluid thus reaches a higher temperature than that present in the internal source;<\/li>\n<li>in the fourth phase, the gas releases heat to the internal environment thanks to the <strong>condenser<\/strong>. As the refrigerant fluid cools down, it changes to a high-temperature liquid state. The fluid at this point returns to the conditions of point 1 and reaches the expansion valve, where it drastically loses pressure, and therefore temperature, and the cycle starts again.<\/li>\n<\/ol>\n<div id=\"attachment_28571\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-28571\" class=\"size-full wp-image-28571 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/biblus.accasoftware.com\/en\/wp-content\/uploads\/sites\/2\/2024\/09\/Operation-heat-pump-heating-phase.jpg\" alt=\"Heat pump operation - heating phase\" width=\"800\" height=\"400\" \/><p id=\"caption-attachment-28571\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-full wp-image-28571 lazyload\" src=\"https:\/\/biblus.accasoftware.com\/en\/wp-content\/uploads\/sites\/2\/2024\/09\/Operation-heat-pump-heating-phase.jpg\" alt=\"Heat pump operation - heating phase\" width=\"800\" height=\"400\" \/><\/noscript> Heat pump operation &#8211; heating phase<\/p><\/div>\n<p>Instead, if it is configured as a <strong>reversible heat pump<\/strong>, the operation is almost reversed: the insertion of diverting valves allows to reverse the roles of condenser and evaporator while keeping the compressor&#8217;s rotation direction unchanged.<\/p>\n<p>In this case, the refrigerant fluid absorbs heat from the internal source (1), which is at a higher temperature than the fluid itself. Through two valves, it passes through the compressor (2), where it reaches higher temperatures compared to those outside and then releases heat to the external source through the heat exchanger (3), which now acts as an evaporator. The fluid cools down again through the expansion valve, and the cycle starts again (4).<\/p>\n<div id=\"attachment_28570\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-28570\" class=\"size-full wp-image-28570 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/biblus.accasoftware.com\/en\/wp-content\/uploads\/sites\/2\/2024\/09\/Functioning-heat-pump-phase-cooling.jpg\" alt=\"Heat pump operation - cooling phase\" width=\"800\" height=\"400\" \/><p id=\"caption-attachment-28570\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-full wp-image-28570 lazyload\" src=\"https:\/\/biblus.accasoftware.com\/en\/wp-content\/uploads\/sites\/2\/2024\/09\/Functioning-heat-pump-phase-cooling.jpg\" alt=\"Heat pump operation - cooling phase\" width=\"800\" height=\"400\" \/><\/noscript> Heat pump operation &#8211; cooling phase<\/p><\/div>\n<h2 id=\"main-types-of-reversible-heat-pumps\">Main types of reversible heat pumps<\/h2>\n<p>Reversible heat pumps with a closed circuit are commonly of two types:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/biblus.accasoftware.com\/en\/air-source-heat-pump-operation-and-benefits\/\" target=\"_blank\" rel=\"noopener\">air-to-air heat pump<\/a><\/strong>, where energy is transferred from indoor air to outdoor air or vice versa (depending on the operating mode). This is the case for most air conditioners available on the market, consisting of an indoor and an outdoor unit. In winter, the outdoor unit acts as an evaporator, extracting heat from the outdoor environment, while the indoor unit acts as a condenser, releasing heat indoors. In summer, the operation is reversed: the indoor unit, now acting as an evaporator, extracts heat from indoor spaces and releases it outdoors, where the outdoor unit acts as a condenser;<\/li>\n<li><strong><a href=\"https:\/\/biblus.accasoftware.com\/en\/air-to-water-heat-pump-operation-and-advantages\/\" target=\"_blank\" rel=\"noopener\">air-to-water heat pump<\/a><\/strong>, where the heat extracted from or released to the outdoor air, depending on the operation, is used for heating or cooling water. These heat pumps are widely used to power radiator or underfloor heating systems.<\/li>\n<\/ul>\n<h2 id=\"why-is-it-convenient-to-use-a-reversible-heat-pump\">Why is it convenient to use a reversible heat pump?<\/h2>\n<p>The main advantage certainly comes from the fact that with a single machine, it is possible to meet both heating and cooling demands. Standard solutions would instead involve a boiler for heating the environment in colder periods and air conditioners for summer.<\/p>\n<p>Moreover, a reversible heat pump is generally <strong>characterized by excellent performance in all seasons<\/strong>, ensuring complete comfort and allowing significant <strong>energy savings<\/strong> and cost reduction on bills.<\/p>\n<p>Furthermore, this technical solution proves to be <strong>sustainable<\/strong> with the <strong>reduction of polluting emissions<\/strong>, as it exploits a renewable energy source.<\/p>\n<p>&nbsp;<\/p>\n<div class=\"international-product-banner-desktop\" style=\"text-align: center\"><a href=\"https:\/\/www.accasoftware.com\/en\/dynamic-energy-analysis-and-simulation-software\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"\/wp-content\/themes\/enfold-child\/img\/banner_prodotto\/termus-plus-en.jpg\" alt=\"termus-plus\" \/><noscript><img decoding=\"async\" class=\"lazyload\" src=\"\/wp-content\/themes\/enfold-child\/img\/banner_prodotto\/termus-plus-en.jpg\" alt=\"termus-plus\" \/><\/noscript><\/a><\/div>\n<div class=\"international-product-banner-mobile\" style=\"text-align: center\"><a href=\"https:\/\/www.accasoftware.com\/en\/dynamic-energy-analysis-and-simulation-software\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"\/wp-content\/themes\/enfold-child\/img\/banner_prodotto_mobile\/termus-plus-en.jpg\" alt=\"termus-plus\" \/><noscript><img decoding=\"async\" class=\"lazyload\" src=\"\/wp-content\/themes\/enfold-child\/img\/banner_prodotto_mobile\/termus-plus-en.jpg\" alt=\"termus-plus\" \/><\/noscript><\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>A reversible heat pump is a device capable of heating a house in winter and cooling it in summer. Find out how it works and why it&#8217;s convenient<\/p>\n","protected":false},"author":54,"featured_media":36955,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_data_scadenza_evento":"","_evento_nome":"","_evento_data":"","_evento_luogo":"","_evento_cta":"","keyword_en":"reversible heat pump","keyword_es":"","keyword_fr":"","keyword_de":"","keyword_ptb":"","_note_content":"<table dir=\"ltr\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\"><colgroup><col width=\"31\" \/><col width=\"580\" \/><col width=\"332\" \/><\/colgroup>\r\n<tbody>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>reversible heat pump<\/td>\r\n<td>70<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>heat pump reversing valve operation<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>reversible cycle heat pump<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>pompe \u00e0 chaleur r\u00e9versible<\/td>\r\n<td>1900<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>pompe \u00e0 chaleur air-air r\u00e9versible<\/td>\r\n<td>320<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>pompes \u00e0 chaleur r\u00e9versible<\/td>\r\n<td>210<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>pompe \u00e0 chaleur r\u00e9versible air air<\/td>\r\n<td>110<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>pompes \u00e0 chaleur r\u00e9versibles<\/td>\r\n<td>90<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>pompe \u00e0 chaleur air\/eau r\u00e9versible<\/td>\r\n<td>70<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>pompe \u00e0 chaleur r\u00e9versible air-eau<\/td>\r\n<td>70<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>comment fonctionne une pompe \u00e0 chaleur r\u00e9versible<\/td>\r\n<td>50<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>c'est quoi pompe \u00e0 chaleur r\u00e9versible<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>PTB<\/td>\r\n<td>bomba de calor revers\u00edvel<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>PTB<\/td>\r\n<td>bombas de calor reversibles<\/td>\r\n<td>10<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>ES<\/td>\r\n<td>bomba de calor reversible<\/td>\r\n<td>70<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>ES<\/td>\r\n<td>bomba de calor reversible aire agua<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>ES<\/td>\r\n<td>bombas de calor reversibles<\/td>\r\n<td>10<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>DE<\/td>\r\n<td>reversible w\u00e4rmepumpe<\/td>\r\n<td>260<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>DE<\/td>\r\n<td>reversible w\u00e4rmepumpen<\/td>\r\n<td>40<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>DE<\/td>\r\n<td>reversible luft wasser w\u00e4rmepumpe<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>DE<\/td>\r\n<td>reversible w\u00e4rmepumpe funktion<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>DE<\/td>\r\n<td>reversible w\u00e4rmepumpe schema<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>","footnotes":""},"categories":[5081],"tags":[5176],"class_list":["post-36951","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bim-energy","tag-newsletter-362"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Reversible Heat Pump: What It Is and How It Works - BibLus<\/title>\n<meta name=\"description\" content=\"A reversible heat pump is a device capable of heating a house in winter and cooling it in summer. 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