{"id":306,"date":"2024-01-12T05:06:47","date_gmt":"2024-01-12T10:06:47","guid":{"rendered":"https:\/\/research.gsd.harvard.edu\/grg\/?page_id=306"},"modified":"2024-02-23T12:31:06","modified_gmt":"2024-02-23T17:31:06","slug":"housezero","status":"publish","type":"page","link":"https:\/\/research.gsd.harvard.edu\/grg\/housezero\/","title":{"rendered":"HouseZero"},"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-housezero\" style=\"font-style:normal;font-weight:300\">HouseZero<\/h1>\n\n\n\n<h1 class=\"wp-block-heading alignwide has-small-font-size\" style=\"font-style:normal;font-weight:300\">Life Cycle Carbon Emissions<\/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\">The research paper \u201cZero-carbon Balance: The Case of HouseZero\u201d provides readers with a case study of the data, methods, and scenarios used to calculate HouseZero\u2019s carbon balance over a 100-year estimated building life (the carbon balance for a 60-year estimated building life is also calculated in the full paper). To do this, the team calculated the total embodied carbon emissions from as-built data, simulated operational carbon emissions, and projected carbon offsetting from onsite renewable energy over the entire life of the building. To make the findings comparable to other studies, the paper reports the embodied carbon emissions per square meter of occupied space, which results in 488 kg CO2e\/m2 for the 100-year estimated building life.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div style=\"height:33px\" 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\">This calculation includes carbon emissions generated from the extraction, manufacturing, construction, and replacement of all elements considered to be within the building\u2019s physical system boundary. This incorporates the building\u2019s material systems (e.g., building assemblies including the foundation, structure, enclosure, and interior partitions and finishes) as well as technical systems that are not as typical in most studies (e.g., energy well, heat pump, photovoltaic panel and balance-of-system, and elevator). When temporal and physical system boundaries are aligned to current benchmarking studies, the normalized embodied CO2e emissions of HouseZero are much lower \u2013 less than half \u2013 at 233 kg CO2e\/ m2.<\/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=\"808\" src=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-01-19247-1024x808.png\" alt=\"Grid of images including interior and exterior shot of House Zero, typical wall section of House Zero, and diagram of energy and thermal flow in House Zero\" class=\"wp-image-309\" srcset=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-01-19247-1024x808.png 1024w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-01-19247-300x237.png 300w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-01-19247-768x606.png 768w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-01-19247-1536x1211.png 1536w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-01-19247-2048x1615.png 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-findings\">Findings<\/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>Henning Fjeldheim<br>Bin Yan<br>Tor Dokka Helge<br>Kristian Edwards<br>Tine Hegli<br>Ali Malkawi<\/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\">The team found that achieving zero carbon balance is dependent on how much carbon is emitted by the current and future energy supply from the electrical grid. The carbon balance results showed that HouseZero can achieve net-zero carbon balance with its simulated energy consumption and onsite power generation under current energy grid carbon-intensity scenarios when a zero-carbon emission grid is not achieved by 2050. However, if zero-carbon grid emissions are achieved by 2050, the project cannot achieve a net-zero carbon balance. These results highlight the sensitivity of the carbon balance analysis when designing a zero-carbon emissions building, the need for transparent CO2e accounting, more uniform systems boundary definitions, and the importance of data related to the future building and energy grid scenarios prescribed in the LCA study.<\/p>\n<\/div>\n<\/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\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image alignwide size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"657\" src=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-05-19245-1024x657.png\" alt=\"Chart comparing carbon emissions across four different policy scenarios\" class=\"wp-image-313\" srcset=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-05-19245-1024x657.png 1024w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-05-19245-300x192.png 300w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-05-19245-768x493.png 768w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-05-19245-1536x985.png 1536w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-05-19245-2048x1314.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"688\" src=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-06-19243-1024x688.png\" alt=\"Chart comparing carbon emissions and PV offsets across four different policy scenarios\" class=\"wp-image-314\" srcset=\"https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-06-19243-1024x688.png 1024w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-06-19243-300x202.png 300w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-06-19243-768x516.png 768w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-06-19243-1536x1032.png 1536w, https:\/\/research.gsd.harvard.edu\/grg\/files\/2024\/01\/HZ_CB_Figures-06-19243-2048x1376.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\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 HouseZero Life Cycle Carbon Emissions Project Overview The research paper \u201cZero-carbon [&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-306","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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