{"id":4607,"date":"2026-09-10T19:57:10","date_gmt":"2026-09-11T02:57:10","guid":{"rendered":"https:\/\/www.26yc.com\/geothermal-heat-recovery\/"},"modified":"2026-10-08T23:36:09","modified_gmt":"2026-10-09T06:36:09","slug":"geothermal-heat-recovery","status":"publish","type":"post","link":"https:\/\/www.26yc.com\/ko\/geothermal-heat-recovery\/","title":{"rendered":"\uc9c0\uc5f4 \ubc0f \uc9c0\uc911\uc5f4 \uacf5\uae30 \uc608\uc5f4"},"content":{"rendered":"<p>The earth a few meters below the surface stays near constant temperature all year. That stable thermal mass can be used to <strong>pre-condition ventilation air<\/strong> before it reaches a building, cutting heating and cooling loads.<\/p>\n<h2>How Ground Coupling Works<\/h2>\n<p>Outdoor air is passed through a buried pipe loop (ground heat exchanger) or across a ground-coupled coil. In winter the ground warms the incoming air; in summer it cools it. The air-to-air exchanger then fine-tunes the temperature using building exhaust.<\/p>\n<h2>Two Common Approaches<\/h2>\n<ul>\n<li><strong>Earth-air heat exchanger (EAHX):<\/strong> A network of buried pipes that tempers fresh air directly. Simple, no refrigerant.<\/li>\n<li><strong>Ground-source heat pump (GSHP) + recovery:<\/strong> A heat pump upgrades ground energy; an air-to-air core recovers exhaust heat for additional savings.<\/li>\n<\/ul>\n<h2>Where It Pays Off<\/h2>\n<ul>\n<li>Extreme climates with large seasonal swings<\/li>\n<li>Buildings with high fresh-air requirements (schools, labs)<\/li>\n<li>Passive or near-zero-energy building projects<\/li>\n<li>Greenhouses and agricultural facilities<\/li>\n<\/ul>\n<h2>Design Cautions<\/h2>\n<ul>\n<li>Pipe depth and length must match airflow and soil type.<\/li>\n<li>Avoid placing intakes near contaminant sources (septic, fuel tanks).<\/li>\n<li>Condensation in the buried pipe needs a drain or slope.<\/li>\n<li>Combine with a plate or heat-pipe core for best year-round performance.<\/li>\n<\/ul>\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<p><strong>Does the ground freeze in winter?<\/strong><br \/>\nBelow ~2 m the temperature is stable and rarely freezes; the top few meters provide the seasonal buffering.<\/p>\n<p><strong>Is it worth the excavation cost?<\/strong><br \/>\nFor large, continuous ventilation loads it often pays back in 3-6 years; for small buildings the air-to-air core alone is usually enough.<\/p>\n<div class=\"yc-related\">\n<h3>\uad00\ub828 \uae30\uc0ac<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.26yc.com\/ko\/verifying-chinese-heat-exchanger-certifications\/\">CE, AHRI, Eurovent: How to Verify a Chinese Heat-Exchanger Supplier\u2019s Claims<\/a><\/li>\n<li><a href=\"https:\/\/www.26yc.com\/ko\/en-308-test-procedure-air-to-air-heat-exchangers\/\">EN 308: Test Procedures for Air-to-Air Heat Transfer in Recovery Equipment<\/a><\/li>\n<li><a href=\"https:\/\/www.26yc.com\/ko\/gb-t-21087-air-to-air-energy-recovery-china\/\">GB\/T 21087: China\u2019s Standard for Air-to-Air Energy Recovery Devices<\/a><\/li>\n<li><a href=\"https:\/\/www.26yc.com\/ko\/greenhouse-heat-recovery-horticulture\/\" title=\"Heat Recovery in Greenhouses and Horticulture\">Heat Recovery in Greenhouses and Horticulture<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The earth a few meters below the surface stays near constant temperature all year. That stable thermal mass can be used to pre-condition ventilation air before it reaches a building, cutting heating and cooling loads. How Ground Coupling Works Outdoor air is passed through a buried pipe loop (ground heat exchanger) or across a ground-coupled [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[197,242],"tags":[228,229],"class_list":["post-4607","post","type-post","status-publish","format-standard","hentry","category-encyclopedia","category-exchanger-types","tag-geothermal","tag-ground-source"],"_links":{"self":[{"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/posts\/4607","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=4607"}],"version-history":[{"count":2,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/posts\/4607\/revisions"}],"predecessor-version":[{"id":5154,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/posts\/4607\/revisions\/5154"}],"wp:attachment":[{"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/media?parent=4607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/categories?post=4607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.26yc.com\/ko\/wp-json\/wp\/v2\/tags?post=4607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}