A comprehensive evaluation of zero energy buildings in cold regions: Actual performance and key technologies of cases from China, the US, and the European Union

Wang, Ran; Feng, Wei; Wang, Lan; Lu, Shilei

doi:10.1016/j.energy.2020.118992

Title: A comprehensive evaluation of zero energy buildings in cold regions: Actual performance and key technologies of cases from China, the US, and the European Union

Journal Article · Mon Oct 19 00:00:00 EDT 2020 · Energy (Oxford)

DOI:https://doi.org/10.1016/j.energy.2020.118992· OSTI ID:1845821

Wang, Ran ^[1]; Feng, Wei ^[2];

^[3]; Lu, Shilei ^[1]

Tianjin Univ. (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); City Univ. of Hong Kong (Hong Kong)

Evaluation of actual zero energy buildings (ZEBs) performance and identification of its regional characteristics are of great significance for similar future projects. Based on more than 400 cases in cold regions, this study compared the post-evaluation and drivers of ZEBs from China, the US and the European Union (EU). Results found that ZEB definition, energy drivers, standard, regional policies, technology adoption and their adoption ratio determine the energy performance of cases. Not all EU and China cases reach the net-zero energy target; however, most ZEBs in the US do. ZEBs in cold regions adopted multiple technologies to achieve high energy-efficiency. Further, the adoption ratio of passive technologies is higher than that of active technologies, especially in China. The active technologies in cold regions are mainly seen in the application of advanced HVAC systems. Such application of renewable technologies exhibits strong regional characteristics; for example, the EU's carbon emission reduction policies promoted the use of biomass-based technologies. The analysis also found that energy policies greatly enhance the development of ZEBs. Overall, achieving zero energy is a process, not an endpoint and many projects need further refinement after occupancy.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: National Key Research and Development Program of China; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office

Grant/Contract Number:: AC02-05CH11231; 2016YFC0700100

OSTI ID:: 1845821

Alternate ID(s):: OSTI ID: 1811031

Journal Information:: Energy (Oxford), Vol. 215; ISSN 0360-5442

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
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Title: A comprehensive evaluation of zero energy buildings in cold regions: Actual performance and key technologies of cases from China, the US, and the European Union

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