{"id":1126,"date":"2020-03-25T17:27:33","date_gmt":"2020-03-25T16:27:33","guid":{"rendered":"http:\/\/www.solartech.polimi.it\/?page_id=1126"},"modified":"2020-03-26T12:08:36","modified_gmt":"2020-03-26T11:08:36","slug":"hdh","status":"publish","type":"page","link":"http:\/\/www.solartech.polimi.it\/activities\/hdh\/","title":{"rendered":"Solar Desalination System &#8211; HDH"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-3\">\n<div class=\"wp-block-column is-layout-flow\" style=\"flex-basis:60%\">\n<p class=\"has-normal-font-size\">The desalination process is based on the humidification-dehumidification, aka HDH, concept, in the closed air-open water (CAOW) version of the cycle.<\/p>\n\n\n\n<p class=\"has-normal-font-size\">A seawater flow is pre-heated in the dehumidifier that consists of a finned tube heat exchanger. The seawater is further heated using PV\/T collectors, and then is sprayed in the humidifier. The humidifier is a direct-contact column where the seawater is counterflow to air stream where a simultaneous heat and mass transfer occurs. The seawater cools down and evaporates, with the concentrated seawater is discharged from the humidifier, whereas the air is heated and humidified.<\/p>\n\n\n\n<p class=\"has-normal-font-size\">Afterwards, the air flows inside the dehumidifier, where it is cooled below its dew-point temperature and the pure water is produced. Finally, the air stream flows back to the humidifier, closing the loop.<\/p>\n\n\n\n<p class=\"has-normal-font-size\">For relatively small-decentralized community, this process is a promising technology thanks to a low environmental and social impact through the possible integration with a renewable energy source.<\/p>\n\n\n\n<p class=\"has-normal-font-size\">A small prototype at SolarTechLab will be build in order to analyze the performance of this system and maximize the pure water production in different working conditions.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\" style=\"flex-basis:40%\">\n<figure class=\"wp-block-image size-large is-resized\"><a href=\"http:\/\/www.solartech.polimi.it\/wp-content\/uploads\/2020\/03\/hdh_layout_.png\"><img decoding=\"async\" loading=\"lazy\" src=\"http:\/\/www.solartech.polimi.it\/wp-content\/uploads\/2020\/03\/hdh_layout_-1024x626.png\" alt=\"\" class=\"wp-image-1129\" width=\"1024\" height=\"626\" srcset=\"http:\/\/www.solartech.polimi.it\/wp-content\/uploads\/2020\/03\/hdh_layout_-1024x626.png 1024w, http:\/\/www.solartech.polimi.it\/wp-content\/uploads\/2020\/03\/hdh_layout_-300x184.png 300w, http:\/\/www.solartech.polimi.it\/wp-content\/uploads\/2020\/03\/hdh_layout_-768x470.png 768w, http:\/\/www.solartech.polimi.it\/wp-content\/uploads\/2020\/03\/hdh_layout_-1536x940.png 1536w, http:\/\/www.solartech.polimi.it\/wp-content\/uploads\/2020\/03\/hdh_layout_.png 1659w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The desalination process is based on the humidification-dehumidification, aka HDH, concept, in the closed air-open water (CAOW) version of the cycle. A seawater flow is pre-heated in the dehumidifier that consists of a finned tube heat exchanger. The seawater is further heated using PV\/T collectors, and then is sprayed in the humidifier. The humidifier is&#8230;<\/p>\n<p class=\"more-link\"><a href=\"http:\/\/www.solartech.polimi.it\/activities\/hdh\/\"><span>Read More<\/span><i>&#43;<\/i><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":80,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0},"_links":{"self":[{"href":"http:\/\/www.solartech.polimi.it\/wp-json\/wp\/v2\/pages\/1126"}],"collection":[{"href":"http:\/\/www.solartech.polimi.it\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.solartech.polimi.it\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.solartech.polimi.it\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.solartech.polimi.it\/wp-json\/wp\/v2\/comments?post=1126"}],"version-history":[{"count":6,"href":"http:\/\/www.solartech.polimi.it\/wp-json\/wp\/v2\/pages\/1126\/revisions"}],"predecessor-version":[{"id":1146,"href":"http:\/\/www.solartech.polimi.it\/wp-json\/wp\/v2\/pages\/1126\/revisions\/1146"}],"up":[{"embeddable":true,"href":"http:\/\/www.solartech.polimi.it\/wp-json\/wp\/v2\/pages\/80"}],"wp:attachment":[{"href":"http:\/\/www.solartech.polimi.it\/wp-json\/wp\/v2\/media?parent=1126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}