| 1. |
- Dubois, Marie-Claude, et al.
(författare)
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Performance Evaluation of Lighting and Daylighting Retrofits: Results from IEA SHC Task 50
- 2016
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Ingår i: Proceedings of the 4th International Conference on Solar Heating and Cooling for Buildings and Industry (SHC 2015). - : Elsevier BV. - 1876-6102. ; 91, s. 926-937
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Konferensbidrag (refereegranskat)abstract
- This article presents some results from a large monitoring campaign performed in 22 buildings around the world as part of International Energy Agency (IEA) Task 50 “Advanced lighting solutions for retrofitting buildings”. This article mainly addresses the work of Subtask D, which aims to demonstrate sound lighting retrofit solutions in a selection of representative, typical Case Studies. In order to evaluate the Case Studies, a monitoring protocol was developed to assess the overall lighting performance taking into consideration: 1) Energy use, 2) Retrofit costs, 3) Photometric assessment, and 4) User assessment. The monitoring was carried out from June 2014 to December 2015 in 22 non-residential buildings in ten countries. This article presents results from selected Case Studies, drawing conclusions regarding retrofit solutions as well as reflecting on methodological procedures for the measurements and data collection. Measured data as well as key conclusions from Subtask D will be summarized in an electronic web and portable sourcebook at the end of the IEA Task 50 (December 2015), which will be freely available through the Internet.
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| 2. |
- Dubois, Marie-Claude, et al.
(författare)
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T50 D.3 Monitoring protocol for lighting and daylighting retrofits
- 2016
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This document presents a monitoring protocol to assess the overall performance of a lighting and/or daylighting retrofit of a building. This protocol covers four key aspects:1. Energy use;2. Retrofit costs;3. Photometric assessment;4. User assessment.This document develops each aspect in detail, presenting the required measurements and necessary equipment as well as providing guidelines for data analysis.The protocol is written as a general guideline document which could be used by non-expert assessors. A step-by-step general procedure is described, including five main phases, where each phase is described in detail, including the required documentation for two distinct monitoring levels: a ‘basic’ and a ‘comprehensive’ monitoring level.
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| 3. |
- Gentile, Niko, et al.
(författare)
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A toolbox to evaluate non-residential lighting and daylighting retrofit in practice
- 2016
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Ingår i: Energy and Buildings. - : Elsevier BV. - 1872-6178 .- 0378-7788. ; 123, s. 151-161
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Tidskriftsartikel (refereegranskat)abstract
- In the field of lighting and daylighting, standard monitoring procedures to assess the overall performance of retrofit projects are scarce. Nevertheless, access to monitored data is crucial in assessing whether daylighting or electric lighting systems deliver the expected performance in terms of cost-effectiveness, energy efficiency and lighting quality. In order to bridge this gap, a lighting retrofit evaluation toolbox was developed as a part of the International Energy Agency − Solar Heating and Cooling Programme (IEA-SHC) Task 50: “Advanced Lighting Solutions for Retrofitting Buildings”. The evaluation toolbox focuses on non-residential buildings and covers four key aspects: energy efficiency, costs, quality of the lighting environment and user satisfaction. This article presents the main features of this evaluation toolbox, along with some lessons learned from its application in selected case studies.
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| 4. |
- Kaempf, Jérôme, et al.
(författare)
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T50 C.1 Lighting retrofit in current practice - Evaluation of an international survey
- 2016
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Surveys and socio-professional studies carried out at national and international levels contribute to a better understanding of the lighting retrofit process. Within the framework of the International Energy Agency Task 50 - Advanced lighting solutions for retrofitting buildings- and its subtask C1 focusing on the analysis of workflows and needs, an online survey on lighting retrofit was initiated in December 2013.After 9 months, more than 1000 answers were collected. The survey provides clear insights about the workflow of building professionals and leads to a better understanding of their needs in terms of computer method and tools.One of the main outcomes of the survey is that retrofitting strategies used in practice essentially focus on electric lighting actions such as of luminaires replacement and the use of controls. Generally, daylighting strategies are not rated as the highest priority. The results also indicate that practitioners mainly rely on their own experience and rarely involve external consultants in the lighting retrofit process. Furthermore, the survey results suggest that practitioners are interested in user-friendly tools allowing quick evaluations of their project, with a good compromise between cost and accuracy, and producing reports that can be directly presented to their client.The survey also emphasized that the main barriers in using simulation tools are essentially their complexity and the amount of time it takes to perform a study. Practitioners are keen to use tools at preliminary design stage and would like to be able to estimate the cost and other key figures (energy consumption and lighting levels). The paper concludes with recommendations for the building software developers to address the needs of practitioners in a more suitable way.
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