Sunday, February 17th, 2019

Life cycle cost analysis of a multi-storey residential Net Zero Energy Building in Denmark

Publication year: 2011brbSource:/b Energy, In Press, Corrected Proof, Available online 4 August 2011brAnna Joanna, Marszal , Per, HeiselbergbrIt is well recognized that in the long run, the implementation of energy efficiency measures is a more cost-optimal solution in contrast to taking no action. However, the Net ZEB concept raises a new issue: how far should we go with energy efficiency measures and when should we start to apply renewable energy technologies? This analysis adopts the LCC methodology and uses a multi-family Net ZEB to find the answer to this question. Moreover, it looks at the issue from the building owner’s perspective, hence it should be seen as a private economy analysis. The study includes three levels of…br Highlights: ► Combined heat and power systems can improve urban energy-efficiency but are often subject to planning restrictions. ► An MILP optimization model is used to design integrated urban energy systems for various city sizes and technology types. ► Restricting urban CHP use has little effect on overall system cost, but cost structure is different. ► Restricting urban CHP use can reduce overall urban energy-efficiency by up to 24% versus a reference case.

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