{"id":4614,"date":"2026-09-10T19:57:10","date_gmt":"2026-09-11T02:57:10","guid":{"rendered":"https:\/\/www.26yc.com\/heat-recovery-payback-calculation\/"},"modified":"2026-10-08T23:36:09","modified_gmt":"2026-10-09T06:36:09","slug":"heat-recovery-payback-calculation","status":"publish","type":"post","link":"https:\/\/www.26yc.com\/zh_cn\/heat-recovery-payback-calculation\/","title":{"rendered":"\u70ed\u56de\u6536\u6295\u8d44\u56de\u6536\u8ba1\u7b97"},"content":{"rendered":"<p>Before buying a recovery unit, a quick <strong>\u6295\u8d44\u56de\u6536\u671f\u8ba1\u7b97<\/strong> \u5373\u53ef\u5224\u65ad\u662f\u5426\u5212\u7b97\u3002\u53ea\u9700\u8981\u51e0\u4e2a\u73b0\u573a\u6570\u636e\u548c\u5f53\u5730\u80fd\u6e90\u4ef7\u683c\u3002<\/p>\n<h2>The Core Formula<\/h2>\n<p style=\"background:#f8fafc;padding:12px;border-left:4px solid #3b82f6\">\n\u5e74\u8282\u80fd\u91cf (kWh) = 1.2 \u00d7 \u98ce\u91cf (m\u00b3\/h) \u00d7 \u03b7 \u00d7 dT (\u2103) \u00d7 \u5c0f\u65f6\/\u5e74 \u00f7 1000\n<\/p>\n<p>\u5176\u4e2d1.2\u4e3a\u7a7a\u6c14\u8fd1\u4f3c\u4f53\u79ef\u70ed\u5bb9 (Wh\/m\u00b3\u00b7K)\uff0ceta\u4e3a\u6548\u7387\uff0cdT\u4e3a\u6392\u98ce\u4e0e\u9001\u98ce\u4e4b\u95f4\u7684\u6e29\u5dee\u3002<\/p>\n<h2>Worked Example<\/h2>\n<ul>\n<li>\u98ce\u91cf\uff1a10,000 m\u00b3\/h<\/li>\n<li>\u6548\u7387\uff1a75 % (0.75)<\/li>\n<li>dT\uff08\u51ac\u5b63\u5e73\u5747\uff09\uff1a20 \u2103<\/li>\n<li>\u8fd0\u884c\u5c0f\u65f6\u6570\uff1a6,000 \/ \u5e74<\/li>\n<li>\u80fd\u6e90\u4ef7\u683c\uff1a$0.12 \/ kWh<\/li>\n<\/ul>\n<p>\u8282\u80fd\u91cf = 1.2 \u00d7 10,000 \u00d7 0.75 \u00d7 20 \u00d7 6,000 \u00f7 1000 = <strong>1,080,000 Wh = 1,080 kWh\/\u5e74<\/strong>.<br \/>\n\u4ef7\u503c = 1,080 \u00d7 $0.12 = <strong>129.6\u7f8e\u5143\/\u5e74<\/strong>.<br \/>\n\u82e5\u88c5\u7f6e\uff08\u542b\u5b89\u88c5\uff09\u8d39\u7528\u4e3a$1,500\uff0c\u5219\u6295\u8d44\u56de\u6536\u671f\u7ea6\u4e3a <strong>11.6\u5e74<\/strong> &#8211; but add fan-energy savings and incentives, and real projects in cold climates often land at 2-4 years.<\/p>\n<h2>Factors That Shorten Payback<\/h2>\n<ul>\n<li>\u66f4\u9ad8\u7684dT\uff08\u66f4\u51b7\u7684\u6c14\u5019\u3001\u66f4\u70ed\u7684\u6392\u98ce\uff09<\/li>\n<li>\u66f4\u957f\u7684\u8fd0\u884c\u65f6\u95f4\uff08\u8fde\u7eed\u5de5\u827a\uff09<\/li>\n<li>\u66f4\u9ad8\u7684\u80fd\u6e90\u4ef7\u683c<\/li>\n<li>\u8fd4\u5229\u6216\u78b3\u4fe1\u7528<\/li>\n<li>\u4f9b\u6696\uff0b\u5236\u51b7\u7684\u590d\u5408\u8282\u7ea6\uff08\u7113\uff09<\/li>\n<\/ul>\n<p>Turn the estimate into a decision with a short sensitivity check. Vary the two strongest drivers, the temperature difference and the operating hours, to see how fragile the payback is; a project that only works at the best guess is risky. Add the fan-energy penalty and any cooling saving from enthalpy recovery, since ignoring either skews the result. Then layer in incentives, carbon pricing, or an energy-service contract, which can move a marginal case to clearly worthwhile. Treat the formula as a screening tool and confirm with the manufacturer curve and, for larger spends, a detailed model. Our <a href=\"https:\/\/www.26yc.com\/zh_cn\/heat-recovery\/\">\u70ed\u56de\u6536\u89e3\u51b3\u65b9\u6848<\/a> include performance data to support that check.<\/p>\n<h2>\u5e38\u89c1\u95ee\u9898<\/h2>\n<p><strong>\u662f\u5426\u5e94\u5305\u542b\u98ce\u673a\u80fd\u8017\uff1f<\/strong><br \/>\nYes &#8211; subtract the extra fan electricity from the saved heating value for a true net payback.<\/p>\n<p><strong>\u8fd9\u4e2a\u7cbe\u5ea6\u8db3\u4ee5\u4f5c\u4e3a\u91c7\u8d2d\u4f9d\u636e\u5417\uff1f<\/strong><br \/>\nIt is a good screening estimate; confirm with the manufacturer&#8217;s performance curve and a detailed energy model before purchase.<\/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\/psychrometric-processes-heat-recovery\/\">Psychrometric Processes in Heat Recovery: What Happens on the Chart<\/a><\/li>\n<li><a href=\"https:\/\/www.26yc.com\/zh_cn\/ntu-effectiveness-method\/\">The epsilon-NTU Method: Predicting Heat Exchanger Performance<\/a><\/li>\n<li><a href=\"https:\/\/www.26yc.com\/zh_cn\/dew-point-and-frost-point\/\">Dew Point and Frost Point: The Temperatures That Decide Core Survival<\/a><\/li>\n<li><a href=\"https:\/\/www.26yc.com\/zh_cn\/chinas-heat-exchanger-manufacturing-clusters\/\" title=\"China Heat Exchanger Manufacturing Clusters: Where Recovery Equipment Is Built\">China Heat Exchanger Manufacturing Clusters: Where Recovery Equipment Is Built<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Before buying a recovery unit, a quick payback calculation shows whether it makes sense. You only need a few field numbers and the local energy price. The Core Formula Annual energy saved (kWh) = 1.2 x airflow (m3\/h) x eta x dT (C) x hours\/year \/ 1000 Where 1.2 is the approximate volumetric heat capacity [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[243,197],"tags":[238,227],"class_list":["post-4614","post","type-post","status-publish","format-standard","hentry","category-design-calc","category-encyclopedia","tag-calculation","tag-payback"],"_links":{"self":[{"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/posts\/4614","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=4614"}],"version-history":[{"count":3,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/posts\/4614\/revisions"}],"predecessor-version":[{"id":5147,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/posts\/4614\/revisions\/5147"}],"wp:attachment":[{"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/media?parent=4614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/categories?post=4614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.26yc.com\/zh_cn\/wp-json\/wp\/v2\/tags?post=4614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}