Comparison of an LCA and LCC for façade renovation strategies designed for change

This paper examines the environmental and financial impact of façade renovation strategies designed for change and how taking into account each of these aspects will lead to different renovation decisions. In a first part of the paper the optimal construction method for different façade renovation strategies is searched from the environmental point of view. This is done through life cycle analysis (LCA). In a second part of the paper the financial impact of the results obtained with LCA is determined. This is done with life cycle costing (LCC). The results show that although both LCA and LCC are life cycle studies that follow similar principles and boundaries this does not mean that LCA and LCC based decisions will coincide. For the environmental score the operational energy of a building has the largest impact and energy efficiency measures will often be beneficial. For the financial cost the investment cost is the most important impact and energy efficiency measures will only pay off to a certain extent. Decisions that are based solely on the financial cost may thus lead to sub-optimal solutions from an environmental point of view.

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Life-cycle approach to the estimation of energy efficiency measures in the buildings sector

Applied Energy ◽

10.1016/j.apenergy.2020.114745 ◽

2020 ◽

Vol 264 ◽

pp. 114745 ◽

Cited By ~ 8

Author(s):

Sara Abd Alla ◽

Vincenzo Bianco ◽

Luca A. Tagliafico ◽

Federico Scarpa

Keyword(s):

Energy Efficiency ◽

Life Cycle ◽

Life Cycle Approach ◽

Energy Efficiency Measures ◽

Efficiency Measures

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An application of fuzzy-AHP to ship operational energy efficiency measures

Ocean Engineering ◽

10.1016/j.oceaneng.2016.05.031 ◽

2016 ◽

Vol 121 ◽

pp. 392-402 ◽

Cited By ~ 49

Author(s):

E. Bal Beşikçi ◽

T. Kececi ◽

O. Arslan ◽

O. Turan

Keyword(s):

Energy Efficiency ◽

Fuzzy Ahp ◽

Energy Efficiency Measures ◽

Efficiency Measures ◽

Operational Energy

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Feasibility Analysis of Distributed Generation System for Large University Campus

Volume 6A: Energy ◽

10.1115/imece2018-86477 ◽

2018 ◽

Author(s):

Amy Allen ◽

Moncef Krarti

Keyword(s):

Energy Efficiency ◽

Life Cycle ◽

Distributed Generation ◽

Carbon Emissions ◽

Life Cycle Cost ◽

College Campuses ◽

University Campus ◽

Generation System ◽

Energy Efficiency Measures ◽

Efficiency Measures

Distributed electric generation systems are increasingly considered to offset energy costs and carbon emissions of large building complexes. College campuses, with their physical compactness, and diversity in building loads, present a common application for distributed generation systems. This paper presents the analysis approach and the main results of a feasibility study of a distributed generation system to supply electric and thermal energy for a large university campus, incorporating energy efficiency measures, to reduce carbon emissions at minimal life cycle cost. The presented study uses a load profile developed based on calibrated detailed simulation energy models for prototypical campus buildings. The calibration analysis is carried out using measured energy consumption data, at the individual building level, and the whole-campus level. Several combinations of distributed generation options are evaluated, using an hourly optimization analysis tool, to meet the entire campus hourly electrical and thermal loads. Proposed efficiency measures and distributed generation options are evaluated using different indicators, including life cycle cost and carbon emissions. The analysis results indicate that implementing energy efficiency measures to reduce electrical and thermal loads before implementing distributed generation options is the most cost-effective approach to reducing the campus’s energy-related carbon emissions. The results of the study are summarized to guide college campuses and managers of other urban districts as they adapt to a changing energy landscape.

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