{"id":4650,"date":"2026-09-04T02:00:00","date_gmt":"2026-09-04T02:00:00","guid":{"rendered":"https:\/\/www.26yc.com\/ashrae-62-1-ventilation-energy-recovery\/"},"modified":"2026-10-08T23:36:10","modified_gmt":"2026-10-09T06:36:10","slug":"ashrae-62-1-ventilation-energy-recovery","status":"publish","type":"post","link":"https:\/\/www.26yc.com\/ja\/ashrae-62-1-ventilation-energy-recovery\/","title":{"rendered":"ASHRAE 62.1 Ventilation and Energy Recovery"},"content":{"rendered":"<p><strong>ASHRAE 62.1-2022<\/strong> sets the minimum ventilation rates for acceptable indoor air quality, and its requirements directly drive how much outdoor air &mdash; and therefore how much recoverable energy &mdash; a system must handle. Energy recovery is the bridge between good ventilation and reasonable energy bills.<\/p>\n<h2>The Ventilation Rate Procedure<\/h2>\n<p>Section 6.2 uses the Ventilation Rate Procedure. The outdoor air requirement for a space is:<\/p>\n<p style=\"padding:10px 14px;background:#f6f6f6;border-left:3px solid #c9a23a\">V<sub>bz<\/sub> = R<sub>p<\/sub> &times; P + R<sub>a<\/sub> &times; A<\/p>\n<p>where R<sub>p<\/sub> is the outdoor airflow per person, R<sub>a<\/sub> is per unit area, P is the number of people, and A is the floor area. Table 6.2.2.1 lists R<sub>p<\/sub> and R<sub>a<\/sub> for every occupancy. High R<sub>p<\/sub> spaces (classrooms, gyms, labs) push outdoor-air fractions above the 70% threshold that triggers <a href=\"https:\/\/www.26yc.com\/ja\/ashrae-90-1-heat-recovery-requirements\/\">ASHRAE 90.1 recovery mandates<\/a>.<\/p>\n<h2>Why Recovery Pairs with 62.1<\/h2>\n<ul>\n<li>More outdoor air means more heating and cooling load. A <a href=\"https:\/\/www.26yc.com\/ja\/membrane-energy-recovery-ventilation\/\">membrane energy recovery ventilator<\/a> or wheel returns most of that energy to the incoming stream.<\/li>\n<li>62.1 requires that ventilation not create pressurization problems. Balanced supply and exhaust with a recovery core keeps the building near neutral pressure.<\/li>\n<li>In critical spaces, separation matters: labs and <a href=\"https:\/\/www.26yc.com\/ja\/cleanroom-hvac-heat-recovery\/\">cleanrooms<\/a> favor non-cross-contaminating membrane cores over rotating wheels.<\/li>\n<\/ul>\n<h2>Local Exhaust and Makeup Air<\/h2>\n<p>When a space has local exhaust (fume hoods, kitchens), 62.1 requires matching makeup air. That makeup air is a prime recovery candidate &mdash; but check the 90.1 exceptions for hazardous and grease exhaust before specifying a wheel.<\/p>\n<h2>Practical Sizing<\/h2>\n<p>Start from the 62.1 rate, then run the <a href=\"https:\/\/www.26yc.com\/ja\/ahu-selection-calculation\/\">AHU selection calculation<\/a> \u304a\u3088\u3073 <a href=\"https:\/\/www.26yc.com\/ja\/ahu-components\/\">AHU component<\/a> layout with the recovery core in the airstream. Sizing the recovery device first lets you right-size the cooling coil and heating coil on the <em>recovered<\/em> load, often saving one equipment size.<\/p>\n<h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<p><strong>How does ASHRAE 62.1 drive energy recovery?<\/strong><br \/>Its ventilation rates set how much outdoor air a system must condition, and that outdoor air is the recoverable energy a wheel or membrane can reclaim.<\/p>\n<p><strong>What is the Ventilation Rate Procedure?<\/strong><br \/>A method using per-person and per-area outdoor-air rates multiplied by occupants and floor area to set the space requirement.<\/p>\n<p><strong>How does 62.1 relate to 90.1 recovery mandates?<\/strong><br \/>High outdoor-air fractions from 62.1 can push a system above the 70% threshold that triggers 90.1&#039;s recovery requirement.<\/p>\n<p><strong>Why size recovery before the coil?<\/strong><br \/>Sizing the core first lets the cooling and heating coils be right-sized on the recovered load, often saving an equipment size.<\/p>\n<div class=\"yc-related\">\n<h3>\u95a2\u9023\u8a18\u4e8b<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.26yc.com\/ja\/heat-pipe-heat-exchanger\/\" title=\"\u30d2\u30fc\u30c8\u30d1\u30a4\u30d7\u71b1\u4ea4\u63db\u5668\uff1a\u53d7\u52d5\u7684\u70ed\u8f38\u9001\">\u30d2\u30fc\u30c8\u30d1\u30a4\u30d7\u71b1\u4ea4\u63db\u5668\uff1a\u53d7\u52d5\u7684\u70ed\u8f38\u9001<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>ASHRAE 62.1-2022 sets the minimum ventilation rates for acceptable indoor air quality, and its requirements directly drive how much outdoor air &mdash; and therefore how much recoverable energy &mdash; a system must handle. Energy recovery is the bridge between good ventilation and reasonable energy bills. The Ventilation Rate Procedure Section 6.2 uses the Ventilation Rate [&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":[182,214,216],"class_list":["post-4650","post","type-post","status-publish","format-standard","hentry","category-encyclopedia","category-standards-codes","tag-energy-recovery","tag-standards","tag-ventilation"],"_links":{"self":[{"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/posts\/4650","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/comments?post=4650"}],"version-history":[{"count":2,"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/posts\/4650\/revisions"}],"predecessor-version":[{"id":5197,"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/posts\/4650\/revisions\/5197"}],"wp:attachment":[{"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/media?parent=4650"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/categories?post=4650"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.26yc.com\/ja\/wp-json\/wp\/v2\/tags?post=4650"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}