{"id":4649,"date":"2026-09-03T02:00:00","date_gmt":"2026-09-03T02:00:00","guid":{"rendered":"https:\/\/www.26yc.com\/ashrae-90-1-heat-recovery-requirements\/"},"modified":"2026-10-08T23:36:10","modified_gmt":"2026-10-09T06:36:10","slug":"ashrae-90-1-heat-recovery-requirements","status":"publish","type":"post","link":"https:\/\/www.26yc.com\/zh_cn\/ashrae-90-1-heat-recovery-requirements\/","title":{"rendered":"ASHRAE 90.1 \u70ed\u56de\u6536\u8981\u6c42"},"content":{"rendered":"<p>ASHRAE Standard 90.1 is the reference energy standard for commercial buildings in the United States, and its exhaust-air energy recovery rule is the single most common code trigger for specifying a heat recovery ventilator. This article summarizes the <strong>ASHRAE 90.1-2022<\/strong> \u9002\u7528\u4e8e\u6307\u5b9a\u7a7a\u6c14-\u7a7a\u6c14\u70ed\u56de\u6536\u7684\u8bbe\u8ba1\u4eba\u5458\u7684\u8981\u6c42\u3002<\/p>\n<h2>When Recovery Is Mandatory (Section 6.5.6.1)<\/h2>\n<p>\u901a\u98ce\u7cfb\u7edf\u5fc5\u987b\u5728\u6392\u98ce\u4e0e\u5ba4\u5916\u7a7a\u6c14\u4e4b\u95f4\u8fdb\u884c\u80fd\u91cf\u56de\u6536\uff0c\u5f53 <strong>\u4ee5\u4e0b\u4e24\u8005<\/strong> \u4ee5\u4e0b\u6761\u4ef6\u540c\u65f6\u6210\u7acb\u65f6\uff1a<\/p>\n<ul>\n<li>\u72ec\u7acb\u98ce\u673a\u7cfb\u7edf\u7684\u8bbe\u8ba1\u9001\u98ce\u91cf\u4e3a <strong>5,000 CFM (2.4 m&sup3;\/s)<\/strong> \u6216\u4ee5\u4e0a\u3002<\/li>\n<li>\u6700\u5c0f\u65b0\u98ce\u91cf\u4e3a <strong>70% \u6216\u4ee5\u4e0a<\/strong> \u7684\u8bbe\u8ba1\u9001\u98ce\u91cf\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u6db5\u76d6\u4e86\u4e13\u7528\u65b0\u98ce\u7cfb\u7edf\uff08DOAS\uff09\u548c\u9ad8\u5bc6\u5ea6\u5360\u7528\u7684\u6df7\u5408\u7a7a\u6c14\u7cfb\u7edf\u3002\u8f83\u5c0f\u7cfb\u7edf\u4e5f\u53ef\u80fd\u5177\u5907\u7ecf\u6d4e\u610f\u4e49\uff1b\u53c2\u89c1 <a href=\"https:\/\/www.26yc.com\/zh_cn\/ahu-selection-calculation\/\">AHU \u9009\u578b\u8ba1\u7b97<\/a> \u7528\u4e8e\u76d8\u7ba1\u4e0e\u8f6c\u8f6e\u7684\u4e00\u4f53\u5316\u9009\u578b\u3002<\/p>\n<h2>Minimum Effectiveness<\/h2>\n<table>\n<tr>\n<th>\u6307\u6807<\/th>\n<th>ASHRAE 90.1-2022 \u8981\u6c42<\/th>\n<\/tr>\n<tr>\n<td>\u6700\u5c0f\u80fd\u91cf\u56de\u6536\u7387<\/td>\n<td>50%\uff08\u7113\u56de\u6536\u7387\uff0c\u4f9d\u636e AHRI 1060\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u6d4b\u8bd5\u65b9\u6cd5<\/td>\n<td>AHRI 1060 \/ AHRI 1061<\/td>\n<\/tr>\n<tr>\n<td>\u8282\u80fd\u5668\u65c1\u901a<\/td>\n<td>Allows bypass, but flow through device &le; 10% of design and pressure drop &le; 0.4 in. w.c.<\/td>\n<\/tr>\n<\/table>\n<p>\u5bf9\u4e8e\u4e0d\u63d0\u4f9b\u4e3b\u52a8\u52a0\u6e7f\u7684\u7cfb\u7edf\uff0c\u663e\u70ed\u56de\u6536\u7387\u5728\u4f9b\u70ed\u8bbe\u8ba1\u5de5\u51b5\u4e0b\u987b\u8fbe\u5230 50%\uff0c\u800c\u7113\u56de\u6536\u7387\u9002\u7528\u4e8e\u4f9b\u51b7\u8bbe\u8ba1\u5de5\u51b5\u3002\u8be5 <a href=\"https:\/\/www.26yc.com\/zh_cn\/enthalpy-recovery-vs-membrane\/\">\u7113\u4e0e\u819c\u5f0f\u5bf9\u6bd4<\/a> \u6709\u52a9\u4e8e\u9009\u5bf9\u8bbe\u5907\u4ee5\u8d8a\u8fc7\u8be5\u95e8\u69db\u3002<\/p>\n<h2>Common Exceptions<\/h2>\n<ul>\n<li>\u5b9e\u9a8c\u5ba4\u901a\u98ce\u67dc\u6392\u98ce\u53ca\u5371\u9669\u6392\u98ce\u7cfb\u7edf\u3002<\/li>\n<li>\u5546\u4e1a\u53a8\u623f\u542b\u6cb9\u8102\u7684\u6392\u98ce\u3002<\/li>\n<li>\u5728\u6f6e\u6e7f\u6c14\u5019\u4e0b\u7684\u9664\u6e7f\u5e94\u7528\uff0c\u82e5\u4f7f\u7528\u8f6c\u8f6e\u4f1a\u91cd\u65b0\u5f15\u5165\u6e7f\u6c14\u3002<\/li>\n<li>\u80fd\u91cf\u56de\u6536\u4f1a\u5e72\u6270\u7a7a\u6c14\u4fa7\u6216\u6c34\u4fa7\u8282\u80fd\u5668\uff08\u53d7\u4e0a\u8ff0\u65c1\u901a\u9650\u5236\u7ea6\u675f\uff09\u7684\u7cfb\u7edf\u3002<\/li>\n<\/ul>\n<p>\u5f53\u6307\u5b9a\u8f6c\u8f6e\u6216\u677f\u5f0f\u82af\u4f53\u65f6\uff0c\u8bf7\u9488\u5bf9\u4ee5\u4e0b\u6545\u969c\u6a21\u5f0f\u8fdb\u884c\u89c4\u5212\uff1a <a href=\"https:\/\/www.26yc.com\/zh_cn\/energy-recovery-wheel-troubleshooting\/\">\u80fd\u91cf\u56de\u6536\u8f6e\u6545\u969c\u6392\u67e5<\/a> &mdash; frost, seal leakage, and imbalance all erode the measured effectiveness that the code assumes.<\/p>\n<h2>Why It Matters for Payback<\/h2>\n<p>Because 90.1 sets a floor, most designers specify 60&ndash;75% effectiveness to also clear <a href=\"https:\/\/www.26yc.com\/zh_cn\/leed-energy-recovery-credit\/\">LEED \u80fd\u6e90\u6027\u80fd\u5f97\u5206<\/a> \u5e76\u7f29\u5c0f\u5236\u51b7\u4e0e\u4f9b\u70ed\u673a\u623f\u89c4\u6a21\u3002\u56de\u6536\u88c5\u7f6e\u5e94\u4f5c\u5982\u4e0b\u9009\u578b\uff1a <em>\u4e4b\u524d<\/em> \u76d8\u7ba1\uff0c\u4f7f DX \u6216\u52a0\u70ed\u5bb9\u91cf\u6309\u56de\u6536\u8d1f\u8377\u800c\u975e\u539f\u59cb\u65b0\u98ce\u8d1f\u8377\u9009\u578b\u3002<\/p>\n<h2>\u5e38\u89c1\u95ee\u9898<\/h2>\n<p><strong>When does ASHRAE 90.1-2022 require energy recovery?<\/strong><br \/>When a fan system has design supply airflow of 5,000 CFM or greater and minimum outdoor airflow of 70% or more of supply.<\/p>\n<p><strong>What minimum effectiveness does the standard require?<\/strong><br \/>A 50% energy recovery ratio, which is enthalpy per AHRI 1060, or 50% sensible at the heating design condition where no active humidification is provided.<\/p>\n<p><strong>Are there common exceptions?<\/strong><br \/>Yes, including lab fume-hood and hazardous exhaust, commercial-kitchen grease exhaust, and cases where recovery would conflict with an economizer subject to bypass limits.<\/p>\n<p><strong>How does the requirement interact with equipment selection?<\/strong><br \/>The recovery device should be selected before the coil so plant is sized on the recovered load, not the raw outdoor-air load.<\/p>\n<div class=\"yc-related\">\n<h3>\u76f8\u5173\u6587\u7ae0<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.26yc.com\/zh_cn\/building-performance-standards-carbon\/\" title=\"Building Performance Standards Carbon\">Building Performance Standards Carbon<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>ASHRAE Standard 90.1 is the reference energy standard for commercial buildings in the United States, and its exhaust-air energy recovery rule is the single most common code trigger for specifying a heat recovery ventilator. This article summarizes the ASHRAE 90.1-2022 requirements that apply to designers specifying air-to-air recovery. When Recovery Is Mandatory (Section 6.5.6.1) A [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[197,241],"tags":[162,214],"class_list":["post-4649","post","type-post","status-publish","format-standard","hentry","category-encyclopedia","category-standards-codes","tag-heat-recovery","tag-standards"],"_links":{"self":[{"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/posts\/4649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/comments?post=4649"}],"version-history":[{"count":2,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/posts\/4649\/revisions"}],"predecessor-version":[{"id":5199,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/posts\/4649\/revisions\/5199"}],"wp:attachment":[{"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/media?parent=4649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/categories?post=4649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/tags?post=4649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}