LCE analysis of buildings - Taking the step towards Net Zero Energy Buildings

The basic concept of a Net Zero Energy Building (Net ZEB) is that on-site renewable energy generation covers the annual energy load. The main objective of this study is to analyse the increase of embodied energy compared to the decrease of the energy use related to building operation; partly by a literature review, partly by detailed analysis of eleven case studies; taking the step from a low energy building to a Net ZEB. The literature review shows that the metric of evaluation, assumed life-span, boundary conditions, age of database and the origin of database differ in different studies and influence the result of embodied energy, The relationship between embodied energy and life cycle energy use is almost linear for all cases studied herein. During the last two decades, embodied energy in new buildings has decreased slightly. However, the relative share of embodied energy related to life cycle energy use has increased. The detailed life cycle energy analysis show that taking the step from a low energy building to a Net ZEB results in a small increase of the embodied energy. However, the energy savings achieved in the annual operating energy balance clearly exceed the increase in embodied energy. (C) 2013 Elsevier B.V. All rights reserved.

[1]  Joshua D. Kneifel,et al.  Life-cycle carbon and cost analysis of energy efficiency measures in new commercial buildings , 2010 .

[2]  Eike Musall,et al.  The Passive House Concept as Suitable Basis towards Net Zero Energy Buildings , 2012 .

[3]  Joel Ann Todd,et al.  Continuous Improvement of the U.S. Green Building Council's Leadership in Energy and Environmental Design (LEED®) Rating System™ , 2008 .

[4]  K. Adalberth,et al.  Energy use during the life cycle of single-unit dwellings: Examples , 1997 .

[5]  Hans-Jürgen Dr. Klüppel,et al.  The Revision of ISO Standards 14040-3 - ISO 14040: Environmental management – Life cycle assessment – Principles and framework - ISO 14044: Environmental management – Life cycle assessment – Requirements and guidelines , 2005 .

[6]  Eike Musall,et al.  From Low-Energy to Net Zero-Energy Buildings: Status and Perspectives , 2011 .

[7]  E. A. Alsema,et al.  Reduction of Environmental Impacts in Crystalline Silicon Photovoltaic Technology: An Analysis of Driving Forces and Opportunities , 2007 .

[8]  Giovanni Andrea Blengini,et al.  The changing role of life cycle phases, subsystems and materials in the LCA of low energy buildings , 2010 .

[9]  François Garde,et al.  Net Zero Energy Solar Buildings: An Overview and Analysis on Worldwide Building Projects , 2010 .

[10]  Karsten Voss,et al.  Net Zero Energy Buildings: International Projects of Carbon Neutrality in Buildings , 2013 .

[11]  Raymond J. Cole,et al.  Life-cycle energy use in office buildings , 1996 .

[12]  L. Gustavsson,et al.  Life cycle primary energy analysis of residential buildings , 2010 .

[13]  P. Torcellini,et al.  Criteria for Definition of Net Zero Energy Buildings , 2010 .

[14]  H. Baumann,et al.  Illustrating limitations of energy studies of buildings with LCA and actor analysis , 2010 .

[15]  Karin Adalberth.  Energy Use in Multi-Family Dwellings during their Life Cycle , 1999 .

[16]  François Garde,et al.  Zero Energy Buildings in France : Overview and Feedback , 2011 .

[17]  Sarel Lavy,et al.  Identification of parameters for embodied energy measurement: A literature review , 2010 .

[18]  Patxi Hernandez,et al.  Development of a methodology for life cycle building energy ratings , 2011 .

[19]  Bruno Peuportier,et al.  State of the art for use of LCA in building sector : Deliverable D2 of the project ENSLIC_BUILDING : Energy Saving through Promotion of Life Cycle Assessment in Buildings , 2009 .

[20]  Michiya Suzuki,et al.  Estimation of life cycle energy consumption and CO2 emission of office buildings in Japan , 1998 .

[21]  Anne Grete Hestnes,et al.  Energy use in the life cycle of conventional and low-energy buildings: A review article , 2007 .

[22]  Karsten Voss,et al.  Net zero energy buildings: A consistent definition framework , 2012 .

[23]  A. Horvath,et al.  Life-Cycle Assessment of Office Buildings in Europe and the United States , 2006 .

[24]  Anne Grete Hestnes,et al.  Solar versus green : The analysis of a Norwegian row House , 1999 .

[25]  Ambrose Dodoo,et al.  Life cycle primary energy analysis of conventional and passive house buildings , 2011 .

[26]  Gregory A. Keoleian,et al.  Life cycle energy and environmental performance of a new university building: modeling challenges and design implications , 2003 .

[27]  Eike Musall,et al.  Zero Energy Building A review of definitions and calculation methodologies , 2011 .

[28]  Ravi Prakash,et al.  Life cycle energy analysis of buildings: An overview , 2010 .

[29]  Ulla Janson,et al.  Passive Houses in Sweden. From Design to Evaluation of Four Demonstration Projects. , 2010 .

[30]  Radu Zmeureanu,et al.  Life cycle cost and energy analysis of a Net Zero Energy House with solar combisystem , 2011 .

[31]  Karsten Voss,et al.  Load Matching and Grid Interaction of Net Zero Energy Buildings , 2010 .

[32]  Stephen Pullen,et al.  Energy used in the Construction and Operation of Houses , 2000 .

[33]  G. Keoleian,et al.  Life‐Cycle Energy, Costs, and Strategies for Improving a Single‐Family House , 2000 .