Design optimization and optimal control of grid-connected and standalone nearly/net zero energy buildings

Lu, Yuehong; Wang, Shengwei; Shan, Kui

doi:10.1016/j.apenergy.2015.06.007

Cited by 199 publications

(72 citation statements)

References 123 publications

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“…Energy efficiency and CO 2 emission reductions in buildings are typically achieved by improving building insulation levels, using energy efficient technologies and integrating renewable energy technologies in the built environment [1][2][3]. Considering the high economic efforts required for the implementation of these measures in the built environment, it is important to ensure that these measures deliver the preferred performance over the building's life span.…”

Section: Introductionmentioning

confidence: 99%

A methodology for performance robustness assessment of low-energy buildings using scenario analysis

2018

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• A novel methodology for performance robustness assessment is proposed.• Multi-criteria assessment is carried out using predicted performance and robustness.• The minimax regret method is used to identify robust designs.• A multi-criteria decision making strategy is implemented to select robust designs. A R T I C L E I N F O Keywords:Robust design Low-energy buildings Future scenarios Occupant behavior Performance assessment Robustness assessment Design decision making A B S T R A C T Uncertainties in building operation and external factors such as occupant behavior, climate change, policy changes etc. impact building performance, resulting in possible performance deviation during operation compared to the predicted performance in the design phase. Multiple low-energy building configurations can lead to similar optimal performance under deterministic conditions, but can have different magnitudes of performance deviation under these uncertainties. Low-energy buildings must be robust so that these uncertainties do not result in significant variations in energy use, cost and comfort. However, these uncertainties are rarely considered in the design of low-energy buildings and hence, the decision making process may result in designs that are sensitive to uncertainties and might not perform as intended. Therefore, to reduce this sensitivity, performance robustness assessment of low-energy buildings considering uncertainties should be assessed in the design phase. The probability of occurrences of these uncertainties are usually unknown and hence, scenarios are essential to assess the performance robustness of buildings. Therefore, a non-probabilistic robustness assessment methodology, based on scenario analysis, is developed to identify robust designs. Maximum performance regret calculated using the minimax regret method is used as the measure of performance robustness. In this approach, the preferred robust design is based on optimal performance and performance robustness.The proposed methodology is demonstrated using a case study with a policymaker as the decision maker. The proposed methodology can be used by designers and consultants to aid decision makers in the design phase to identify robust low-energy building designs that deliver preferred performance in the future operation.

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Section: Introductionmentioning

confidence: 99%

A methodology for performance robustness assessment of low-energy buildings using scenario analysis

2018

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“…Besides efforts to design new buildings having low energy demand and available RES [4][5][6], it is essential to tackle the high energy consumption in existing buildings. The contribution of buildings to the total final energy consumption in the EU was 40% in 2012, making the building stock responsible for 38% of the EU's total CO2 emissions [7].…”

Section: Introductionmentioning

confidence: 99%

Efficient Solutions and Cost-Optimal Analysis for Existing School Buildings

et al. 2016

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Abstract:The recast of the energy performance of buildings directive (EPBD) describes a comparative methodological framework to promote energy efficiency and establish minimum energy performance requirements in buildings at the lowest costs. The aim of the cost-optimal methodology is to foster the achievement of nearly zero energy buildings (nZEBs), the new target for all new buildings by 2020, characterized by a high performance with a low energy requirement almost covered by renewable sources. The paper presents the results of the application of the cost-optimal methodology in two existing buildings located in the Mediterranean area. These buildings are a kindergarten and a nursery school that differ in construction period, materials and systems. Several combinations of measures have been applied to derive cost-effective efficient solutions for retrofitting. The cost-optimal level has been identified for each building and the best performing solutions have been selected considering both a financial and a macroeconomic analysis. The results illustrate the suitability of the methodology to assess cost-optimality and energy efficiency in school building refurbishment. The research shows the variants providing the most cost-effective balance between costs and energy saving. The cost-optimal solution reduces primary energy consumption by 85% and gas emissions by 82%-83% in each reference building.

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“…Further review studies on these subjects more specifically focusing on NZEB developments are presented by Attia et al (2013) and Lu et al (2015). Several examples of application of this method also with the aim of determine the optimum in terms of energy performances and costs (life cycle or initial costs) are presented in numerous studies (Diakaki et al 2008;Brown et al 2010;Morrissey and Horne 2011;Asadi et al 2012;Fesanghary et al 2012;Kumbaroğlu and Madlener 2012;Rysanek and Choudhary 2013;Penna et al 2015).…”

Section: Literature Reviewmentioning

confidence: 99%

Identification of cost-optimal and NZEB refurbishment levels for representative climates and building typologies across Europe

et al. 2017

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The energy consumptions of the building stock are playing a central role in the energy policy of the European Union. While the Member States are applying the Directives in force, the European Commission is working to update the regulatory framework. Specifically, it is necessary to achieve the great unrealized potential for energy savings in existing buildings. With this aim, the nearly zero-energy building (NZEB) target was introduced, and a comparative methodology framework to calculate cost-optimal levels of minimum energy performance requirements was proposed. This study focuses on the issue of building renovation, and it presents the results obtained with the application of a cost-optimal calculation method for identifying proper retrofit measures to reach costoptimal levels and NZEB levels. The assessment takes into account an exhaustive set of passive and active renovation options and it was extended to various building types of 60s-70s (residential and non-residential) in a wide range of representative European climatic conditions. A very relevant energy-saving potential was found for all cost-optimal benchmarks, and in many cases, the obtained NZEB refurbishments have resulted interesting also from an economic point of view.

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Design optimization and optimal control of grid-connected and standalone nearly/net zero energy buildings

Cited by 199 publications

References 123 publications

A methodology for performance robustness assessment of low-energy buildings using scenario analysis

A methodology for performance robustness assessment of low-energy buildings using scenario analysis

Efficient Solutions and Cost-Optimal Analysis for Existing School Buildings

Identification of cost-optimal and NZEB refurbishment levels for representative climates and building typologies across Europe

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