Improving the energy efficiency of the existing building stock: A critical review of commercial and institutional buildings

Ruparathna, Rajeev; Hewage, Kasun; Sadiq, Rehan

doi:10.1016/j.rser.2015.09.084

Cited by 299 publications

(147 citation statements)

References 154 publications

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“…The issue of energy efficiency and energy efficiency improvement has been addressed from multiple points of view [1,2,10,[18][19][20][21][22][23] until this study was carried out. As compared to other previous studies [2,10,[24][25][26][27][28][29][30][31] the research carried out has studied the issue of projects for increasing the energy efficiency of the dwelling stock at regional and county level, showing that an optimal portfolio of projects at the regional level can be created by using LCC as a criterion for setting up this portfolio.…”

Section: Discussionmentioning

confidence: 99%

Selection of Energy Efficiency Projects for Dwelling Stock to Achieve Optimal Project Portfolio at the Regional Level by Applying LCC. An Analysis Based on Three Scenarios in the South-Muntenia Region of Romania

2018

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Abstract:The joint action of the European directives and the national strategies make the issue of energy efficiency of the dwelling stock one of the main research directions in the field. The purpose of this study is to create and apply a methodology for developing the portfolio of projects to increase the energy efficiency of the dwelling stock at a regional level through the use of life cycle cost. For this, eight types of energy efficiency improvement projects and three implementation scenarios were selected for the dwelling stock. For each project life cycle cost was determined in each county of the South-Muntenia region based on the estimation of the energy requirements, the costs of implementation and exploitation. In all three scenarios, the P3 Energy Efficiency Project (the reference building without shutters under the Romanian normative) had minimal life cycle cost in most counties in the region. For each scenario the life cycle cost was determined for the optimal portfolio of projects at regional level. The maximum scenario was chosen as the optimal scenario for regional implementation.

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Section: Discussionmentioning

confidence: 99%

Selection of Energy Efficiency Projects for Dwelling Stock to Achieve Optimal Project Portfolio at the Regional Level by Applying LCC. An Analysis Based on Three Scenarios in the South-Muntenia Region of Romania

2018

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“…Going from automation to persuasion in existing research literature, several articles focus on energy efficiency improvement through behavioral change. However, research efforts and solutions to promote behavioral change in users of public buildings have not been fully exploited so far . This comes as a surprise given the fact that such change in occupants' habits can produce considerable energy savings, up to 40% of the total building's consumption, as argued in Kamilaris et al In order to engage users to be more energy efficient, we should first be make them more energy aware .…”

Section: Related Workmentioning

confidence: 99%

“…However, research efforts and solutions to promote behavioral change in users of public buildings have not been fully exploited so far. 35 This comes as a surprise given the fact that such change in occupants' habits can produce considerable energy savings, up to 40% of the total building's consumption, as argued in Kamilaris et al 6 In order to engage users to be more energy efficient, we should first be make them more energy aware. 36 The methods towards achieving such awareness vary through several studies: sending feedback through email or similar communication channels, 37 presenting interactive posters, 38 setting energysaving prompts, and goal-setting targets.…”

Section: Novelty Statementmentioning

confidence: 99%

Occupancy-based decision support system for building management: From automation to end-user persuasion

et al. 2019

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Summary In this paper, an intelligent occupancy‐based, automated building control system is initially introduced, which has the capability of reducing energy consumption while respecting the occupants' comfort and actions inside building areas. Data stemming from a multisensorial network is combined with implicitly extracted information, since no direct feedback is expected by the users, towards unsupervised monitoring and control of building operation. However, due to significantly higher costs of actuating equipment and the reluctance that some end users show in accepting fully automated solutions, a new hybrid approach is conceptualized and presented; the automated decision support system is supplemented with a persuasion mechanism aimed at increasing energy savings, through raising user awareness. The persuasive methodology employs a continuous feedback mechanism in order to select the optimal incentive strategy by taking into account user success rates, in terms of requested actions, as well as available mechanisms, and daily harassment.

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“…With a luminous efficacy of more than 220 lm/W, LEDs are rapidly supplanting traditional lighting sources to become ubiquitous in their applications, ranging from street lighting, screens, flood lighting, traffic lighting to greenhouse lamps. 5,6 The growing attention that LED lamps have been garnering in recent times is due to the following outstanding features: 4 For commercial breakthrough of LED lighting systems, it is suggested that the government should give economic support for the effective utilization of novel LED technology.…”

Section: Introductionmentioning

confidence: 99%

“…4 For commercial breakthrough of LED lighting systems, it is suggested that the government should give economic support for the effective utilization of novel LED technology. 5,6 The growing attention that LED lamps have been garnering in recent times is due to the following outstanding features: The important commercial LEDs that are currently available in the market are white LEDs, red-green-blue (RGB) LEDs and organic LEDs. 7 The RGB LEDs are known to have improved color control flexibility when compared to the phosphor-based white LEDs.…”

Section: Introductionmentioning

confidence: 99%

An overview of energy efficient solid state LED driver topologies

Yadlapalli

Narasipuram²,

Anuradha³

2019

Int J Energy Res

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LED lamps are projected as prospective successors of incandescent lamps with high efficiency and a long lifetime. Therefore, there is a need to develop energy efficient LED driver topologies for achieving constant current regulation, despite the effects of temperature on the LED V-I characteristics. This paper presents the salient features of various LED driver topologies with a focus on power density, multi-string operation, renewable energy utilization, soft switching, optical wireless communication, reliability and size. The performance of the above topologies is analysed in terms of the number of components, converter switching frequency, galvanic isolation, power rating and efficiency. This paper takes a look at efficiency improvement methods while dwelling on aspects of lifetime and reliability prediction of LED drivers. The paper will anticipate some of the future trends associated with the adaptation of wide bandgap power semiconductor materials, smart LED lighting for the internet of things (IoT) and programmable LED lamp drivers. This detailed technology review is extremely useful for researchers, designers and engineers in choosing the right topology.

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Improving the energy efficiency of the existing building stock: A critical review of commercial and institutional buildings

Cited by 299 publications

References 154 publications

Selection of Energy Efficiency Projects for Dwelling Stock to Achieve Optimal Project Portfolio at the Regional Level by Applying LCC. An Analysis Based on Three Scenarios in the South-Muntenia Region of Romania

Selection of Energy Efficiency Projects for Dwelling Stock to Achieve Optimal Project Portfolio at the Regional Level by Applying LCC. An Analysis Based on Three Scenarios in the South-Muntenia Region of Romania

Occupancy-based decision support system for building management: From automation to end-user persuasion

An overview of energy efficient solid state LED driver topologies

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