{"id":196,"date":"2024-01-10T02:35:27","date_gmt":"2024-01-10T07:35:27","guid":{"rendered":"https:\/\/research.gsd.harvard.edu\/grg\/?page_id=196"},"modified":"2025-09-29T14:49:13","modified_gmt":"2025-09-29T18:49:13","slug":"dryscreen","status":"publish","type":"page","link":"https:\/\/research.gsd.harvard.edu\/grg\/dryscreen\/","title":{"rendered":"DryScreen"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<div class=\"wp-block-group alignwide\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-8cf370e7 wp-block-group-is-layout-flex\">\n<p class=\"has-medium-font-size\" style=\"font-style:normal;font-weight:500\">Grinham Research Group<\/p>\n\n\n\n<p class=\"has-small-font-size\" style=\"font-style:normal;font-weight:300\">Harvard University Graduate School of Design<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator alignwide has-alpha-channel-opacity\" \/>\n<\/div><\/div>\n\n\n\n<h1 class=\"wp-block-heading alignwide has-large-font-size\" id=\"h-dryscreen\" style=\"font-style:normal;font-weight:300\">DryScreen<\/h1>\n\n\n\n<h1 class=\"wp-block-heading alignwide has-small-font-size\" style=\"font-style:normal;font-weight:300\">Vacuum Membrane Dehumidification<\/h1>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading has-medium-font-size\" id=\"h-project-overview\">Project Overview<\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-small-font-size\" style=\"font-style:normal;font-weight:400\">Heating, ventilation, and air conditioning (HVAC) is responsible for roughly 40% of a building&#8217;s energy use and about 20% of global carbon emissions. In hot and humid climates, traditional vapor-compression air conditioning (AC) systems use a significant amount of energy to remove moisture from the air. State-of-the-art research aims to reduce energy consumption by de-coupling these two processes to optimize them independently. Our novel technology, DryScreen, applies pressure to extract water vapor from the air through a water-selective polymer membrane. This method uses less energy, does not use high GWP refrigerant chemicals, delivers larger amounts of fresh air per unit of energy, and provides a healthy connection to the outside air.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading has-medium-font-size\" id=\"h-project-journey\">Project Journey<\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-small-font-size\" style=\"font-style:normal;font-weight:400\">In January 2024, GRG spun off and co-founded<a href=\"https:\/\/trellisair.com\/\"> Trellis Air Corporation <\/a>to commercialize the core dehumidification technology in DryScreen.<\/p>\n\n\n\n<p class=\"has-small-font-size\" style=\"font-style:normal;font-weight:400\">&#8230;<\/p>\n\n\n\n<p class=\"has-small-font-size\" style=\"font-style:normal;font-weight:400\">Our research project has been supported by U.S. Department of Energy grant. Through a pilot field study, we have identified competitive advantages and critical pathways toward commercialization. We have established a robust network of academic collaborators, national laboratories, industry partners, and specialty materials manufacturers. Ongoing development efforts are supported through the Harvard Climate Change Solutions Fund. <\/p>\n\n\n\n<p class=\"has-small-font-size\" style=\"font-style:normal;font-weight:400\"><\/p>\n\n\n\n<p><\/p>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image alignwide size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"575\" src=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0231-18410-1-1024x575.jpg\" alt=\"Researcher installing dryscreen tiles into vacuum dehumidification prototype\" class=\"wp-image-197\" srcset=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0231-18410-1-1024x575.jpg 1024w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0231-18410-1-300x168.jpg 300w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0231-18410-1-768x431.jpg 768w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0231-18410-1-1536x862.jpg 1536w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0231-18410-1-2048x1150.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading alignwide has-medium-font-size\" id=\"h-innovation\">Innovation<\/h2>\n\n\n\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<h3 class=\"wp-block-heading has-small-font-size\" id=\"h-project-team\" style=\"font-style:normal;font-weight:400\">Project Team<\/h3>\n\n\n\n<p class=\"color: #f542f5 has-black-color has-text-color has-small-font-size\" style=\"font-style:normal;font-weight:300\">Jonathan Grinham<br>Jack Alvarenga<br>Peteris Lazovskis<br>Pamela Cabrera<br>Manideep Rebbagondla<br>Les Norford<br>Joanna Aizenberg<\/p>\n\n\n\n<p><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.67%\">\n<p class=\"has-small-font-size\" style=\"font-style:normal;font-weight:400\">We are developing and field-proving a water-selective vacuum membrane system for energy-efficient, low-carbon emission building dehumidification. As humid air passes through the system, water vapor is selectively captured using an array of mass exchangers with a specially developed polymer membrane unit. Vacuum pressure is applied to amplify the water permeation through the membrane, providing further energy reduction. By eliminating the phase-change process for water removal, our DryScreen vacuum membrane dehumidification (VMD) system is a less energy-intensive and lower life cycle GWP method than typical vapor-compression systems.<\/p>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image alignwide size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"575\" src=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0183-17973-1024x575.jpg\" alt=\"Detail shot of membrane on dryscreen tile\" class=\"wp-image-198\" srcset=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0183-17973-1024x575.jpg 1024w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0183-17973-300x168.jpg 300w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0183-17973-768x431.jpg 768w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0183-17973-1536x862.jpg 1536w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/IMG_0183-17973-2048x1150.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image alignwide size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"732\" src=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/MIAMI_1-18518-1024x732.jpg\" alt=\"DryScreen prototype installed in field study in Miami, FL\" class=\"wp-image-199\" srcset=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/MIAMI_1-18518-1024x732.jpg 1024w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/MIAMI_1-18518-300x214.jpg 300w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/MIAMI_1-18518-768x549.jpg 768w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/MIAMI_1-18518-1536x1097.jpg 1536w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/MIAMI_1-18518-2048x1463.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image alignwide size-large\"><img decoding=\"async\" src=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/63e0562ff46ebf974fa6d46c_MIAMI_6-1024x689.jpg\" alt=\"Close up shot of DryScreen prototype installed in field study in Miami, FL\" class=\"wp-image-200\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator alignwide has-alpha-channel-opacity\" \/>\n","protected":false},"excerpt":{"rendered":"<p>Grinham Research Group Harvard University Graduate School of Design DryScreen Vacuum Membrane Dehumidification Project Overview Heating, ventilation, and air conditioning [&hellip;]<\/p>\n","protected":false},"author":178,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-196","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.10 (Yoast SEO v26.7) - 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