{"id":210,"date":"2025-08-22T16:42:08","date_gmt":"2025-08-22T08:42:08","guid":{"rendered":"https:\/\/zhuanlun.169e.com\/?p=210"},"modified":"2025-08-22T16:42:08","modified_gmt":"2025-08-22T08:42:08","slug":"%e8%bd%ac%e8%bd%ae%e7%83%ad%e5%9b%9e%e6%94%b6%e7%a9%ba%e8%b0%83%e6%9c%ba%e7%bb%84%e6%8e%a7%e5%88%b6%e5%8e%9f%e7%90%86-2","status":"publish","type":"post","link":"https:\/\/zhuanlun.169e.com\/en\/huanre\/210\/","title":{"rendered":"Control Principle of Rotary Heat Recovery Air Conditioning Unit"},"content":{"rendered":"<p dir=\"auto\">A rotary heat-recovery air-conditioning unit is a high-efficiency device that combines rotary heat-recovery technology with an air-conditioning system. Its control principle revolves around energy recovery, air treatment, and operational optimization. The following is a brief explanation of its control principle:<\/p>\n<h3 dir=\"auto\">1. <strong>Basic Principle of Rotary Heat Recovery<\/strong><\/h3>\n<p dir=\"auto\">The core component is a slowly rotating honeycomb wheel, usually made of aluminum alloy or corrosion-resistant materials, and available in sensible-heat and total-heat types:<\/p>\n<ul dir=\"auto\">\n<li><strong>Sensible-Heat Exchange<\/strong>fresh air and exhaust air pass countercurrently through the two semicircular zones of the wheel; in winter the exhaust heat is transferred to the cold fresh air, and vice versa in summer.<\/li>\n<li><strong>Total-Heat Exchange<\/strong>the total-heat wheel uses hygroscopic material to transfer both humidity and temperature simultaneously. The wheel speed is typically 10\u201320 rpm, driven by a motor and adjustable according to heat-recovery efficiency requirements.<\/li>\n<\/ul>\n<h3 dir=\"auto\">2. <strong>Control Principle and System Composition<\/strong><\/h3>\n<p dir=\"auto\">The control system achieves automatic operation through sensors, controllers, and actuators, ensuring energy savings and indoor comfort. Its main components and logic are:<\/p>\n<ul dir=\"auto\">\n<li><strong>Sensors<\/strong>monitor the temperature, humidity, and airflow of fresh and exhaust air, as well as indoor and outdoor environmental parameters.<\/li>\n<li><strong>Controller<\/strong>(such as PLC or DDC): based on sensor data, uses algorithms to adjust the wheel speed, fan airflow, and cooling\/heating capacity.<\/li>\n<li><strong>Actuators<\/strong>\uff1a\n<ul dir=\"auto\">\n<li><strong>Wheel drive motor<\/strong>controls the wheel speed to optimize heat-exchange efficiency.<\/li>\n<li><strong>Variable-frequency fan<\/strong>adjusts fresh-air and exhaust-air volumes to balance system pressure and save energy.<\/li>\n<li><strong>Valves and compressor<\/strong>the direct-expansion air-conditioning section regulates cooling\/heating by controlling refrigerant flow and compressor operation.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Control Logic<\/strong>\uff1a\n<ul dir=\"auto\">\n<li><strong>Heat-recovery optimization<\/strong>adjust the wheel speed according to temperature and humidity differences to maximize energy recovery.<\/li>\n<li><strong>Indoor comfort<\/strong>monitor indoor temperature and humidity, and adjust fresh-air volume and air-conditioning output to maintain set parameters.<\/li>\n<li><strong>Energy-saving mode<\/strong>under low load or small temperature differences, reduce the wheel speed or fan power to lower energy consumption.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 dir=\"auto\">3. <strong>Typical Control Process<\/strong><\/h3>\n<ol dir=\"auto\">\n<li><strong>Data acquisition<\/strong>sensors collect fresh-air, exhaust-air, indoor\/outdoor temperature and humidity, and CO2 concentration in real time.<\/li>\n<li><strong>Data analysis<\/strong>the controller compares the set targets (e.g., indoor temperature 26\u00b0C, humidity 50%) with real-time data to calculate the heat-recovery amount and air-conditioning output.<\/li>\n<li><strong>Execution and adjustment<\/strong>\uff1a\n<ul dir=\"auto\">\n<li>Adjust the wheel speed to optimize heat-recovery efficiency (e.g., increase the speed when the winter temperature difference is large).<\/li>\n<li>Control the fan airflow to meet ventilation needs and avoid excessive air exchange.<\/li>\n<li>Coordinate the direct-expansion air conditioner for cooling\/heating to supplement the insufficient cooling\/heating from heat recovery.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Feedback optimization<\/strong>continuously monitor operating results and dynamically adjust component states.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>\u8f6c\u8f6e\u70ed\u56de\u6536\u7a7a\u8c03\u673a\u7ec4\u662f\u4e00\u79cd\u9ad8\u6548\u8bbe\u5907\uff0c\u7ed3\u5408\u8f6c\u8f6e\u5f0f\u70ed\u56de\u6536\u6280\u672f\u548c\u7a7a\u8c03\u7cfb\u7edf\uff0c\u5176\u63a7\u5236\u539f\u7406\u56f4\u7ed5\u80fd\u91cf\u56de\u6536\u3001\u7a7a\u6c14\u5904\u7406\u548c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[28],"class_list":["post-210","post","type-post","status-publish","format-standard","hentry","category-huanre","tag-28"],"_links":{"self":[{"href":"https:\/\/zhuanlun.169e.com\/en\/wp-json\/wp\/v2\/posts\/210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zhuanlun.169e.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zhuanlun.169e.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zhuanlun.169e.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zhuanlun.169e.com\/en\/wp-json\/wp\/v2\/comments?post=210"}],"version-history":[{"count":0,"href":"https:\/\/zhuanlun.169e.com\/en\/wp-json\/wp\/v2\/posts\/210\/revisions"}],"wp:attachment":[{"href":"https:\/\/zhuanlun.169e.com\/en\/wp-json\/wp\/v2\/media?parent=210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zhuanlun.169e.com\/en\/wp-json\/wp\/v2\/categories?post=210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zhuanlun.169e.com\/en\/wp-json\/wp\/v2\/tags?post=210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}