{"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\/ko\/heat-recovery-payback-calculation\/","title":{"rendered":"\uc5f4\ud68c\uc218 \ud22c\uc790 \ud68c\uc218 \uacc4\uc0b0"},"content":{"rendered":"<p>Before buying a recovery unit, a quick <strong>payback calculation<\/strong> shows whether it makes sense. You only need a few field numbers and the local energy price.<\/p>\n<h2>The Core Formula<\/h2>\n<p style=\"background:#f8fafc;padding:12px;border-left:4px solid #3b82f6\">\nAnnual energy saved (kWh) = 1.2 x airflow (m3\/h) x eta x dT (C) x hours\/year \/ 1000\n<\/p>\n<p>Where 1.2 is the approximate volumetric heat capacity of air (Wh\/m3.K), eta is effectiveness, and dT is the temperature difference between exhaust and supply.<\/p>\n<h2>Worked Example<\/h2>\n<ul>\n<li>Airflow: 10,000 m3\/h<\/li>\n<li>Effectiveness: 75 % (0.75)<\/li>\n<li>dT (winter average): 20 C<\/li>\n<li>Operating hours: 6,000 \/ year<\/li>\n<li>Energy price: $0.12 \/ kWh<\/li>\n<\/ul>\n<p>Saved = 1.2 x 10,000 x 0.75 x 20 x 6,000 \/ 1000 = <strong>1,080,000 Wh = 1,080 kWh\/year<\/strong>.<br \/>\nValue = 1,080 x $0.12 = <strong>$129.6 \/ year<\/strong>.<br \/>\nIf the unit (installed) costs $1,500, payback is about <strong>11.6 years<\/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>Higher dT (colder climate, hotter exhaust)<\/li>\n<li>More operating hours (continuous processes)<\/li>\n<li>Higher energy price<\/li>\n<li>Rebates or carbon credits<\/li>\n<li>Combined heating + cooling savings (enthalpy)<\/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\/ko\/heat-recovery\/\">heat recovery solutions<\/a> include performance data to support that check.<\/p>\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<p><strong>Should I include fan energy?<\/strong><br \/>\nYes &#8211; subtract the extra fan electricity from the saved heating value for a true net payback.<\/p>\n<p><strong>Is this accurate enough to buy on?<\/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>\uad00\ub828 \uae30\uc0ac<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.26yc.com\/ko\/psychrometric-processes-heat-recovery\/\">Psychrometric Processes in Heat Recovery: What Happens on the Chart<\/a><\/li>\n<li><a href=\"https:\/\/www.26yc.com\/ko\/ntu-effectiveness-method\/\">The epsilon-NTU Method: Predicting Heat Exchanger Performance<\/a><\/li>\n<li><a href=\"https:\/\/www.26yc.com\/ko\/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\/ko\/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\/ko\/wp-json\/wp\/v2\/posts\/4614","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/comments?post=4614"}],"version-history":[{"count":3,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/posts\/4614\/revisions"}],"predecessor-version":[{"id":5147,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/posts\/4614\/revisions\/5147"}],"wp:attachment":[{"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/media?parent=4614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/categories?post=4614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/tags?post=4614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}