{"id":4284,"date":"2026-09-23T16:24:50","date_gmt":"2026-09-23T15:24:50","guid":{"rendered":"https:\/\/ehpa.org\/heatpumpforum\/?post_type=awards-projects&#038;p=4284"},"modified":"2026-10-19T13:43:29","modified_gmt":"2026-10-19T12:43:29","slug":"mvr4g-dry-integrated-mvr-heat-pump-for-gypsum-board-drying","status":"publish","type":"awards-projects","link":"https:\/\/ehpa.org\/heatpumpforum\/awards-projects\/mvr4g-dry-integrated-mvr-heat-pump-for-gypsum-board-drying\/","title":{"rendered":"MVR4G-DRY: Integrated MVR Heat Pump for Gypsum Board Drying"},"content":{"rendered":"<p>Gypsum board drying is among the most energy-intensive industrial processes, consuming 13 to 35 TWh per year in Sweden. A standard 3 m\u00b2 board takes 24 kWh to produce, two thirds of it for drying, heat conventionally supplied by a gas-fired burner. The evaporated water then leaves the plant as humid exhaust.<\/p>\n<p>MVR4G-DRY replaces the burner with an integrated mechanical vapour recompression heat pump. Seven steam compressors recompress that vapour in stages, delivering seven temperature levels up to 210\u00b0C at a lift of 160\u00b0C, beyond the 140 to 180\u00b0C typical of industrial MVR systems. The recovered heat passes through a tube condenser and heat exchanger to raise the temperature of the drying air, which in turn dries the boards. An additional n-pentane heat pump recovers further heat from the exhaust.<\/p>\n<p>The 10.5 MWth system achieves a COP of at least 2.3 and cuts specific energy consumption from 0.778 to below 0.389 kWh per kg of water evaporated, an energy saving of over 50%. Working fluids are water\/steam (R718) and n-pentane (R601), both natural and non-PFAS. The demonstration runs on a live production line at Knauf&#8217;s \u00c5hus plant, advancing the system from TRL6 to TRL8.<\/p>\n","protected":false},"author":4,"featured_media":4660,"template":"","awards-edition":[47],"awards-country":[67],"awards-categories":[30,62],"class_list":["post-4284","awards-projects","type-awards-projects","status-publish","has-post-thumbnail","hentry","awards-edition-47","awards-country-sweden","awards-categories-large-heat-pump-award","awards-categories-nominees"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MVR4G-DRY heat pump - Nominees - Heat Pump Awards - Heat Pump Forum<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ehpa.org\/heatpumpforum\/awards-projects\/mvr4g-dry-integrated-mvr-heat-pump-for-gypsum-board-drying\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MVR4G-DRY heat pump - Nominees - Heat Pump Awards - Heat Pump Forum\" \/>\n<meta property=\"og:description\" content=\"Gypsum board drying is among the most energy-intensive industrial processes, consuming 13 to 35 TWh per year in Sweden. 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