Existing building retrofitting for Indoor PM2.5 Concentration Control on Smog Days: Case study in China

The nearly Zero Energy building (nZEB) renovation market is currently the key feature in the construction sector. RenoZEB aims to develop a systematic approach for retrofitting by assembling different technologies in a plug and play building envelope. This paper presents the methodology used to transform the RenoZEB concept in the design system. A multi-criteria decision matrix is used for the selection of the best façade technologies within the market while the analysis of the existing building conditions allows to develop a replicable approach for designing deep retrofitting intervention through a plug&play façade. The methodology appears to be a valuable support for the selection of technologies and allows to define a design guideline for the envelope.

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Assessing the energy efficiency of a district’s existing building stock glazing – Case Study TU Dresden

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/588/2/022024 ◽

2020 ◽

Vol 588 ◽

pp. 022024

Author(s):

Maartje Van Roosmalen ◽

Bernhard Weller

Keyword(s):

Energy Efficiency ◽

Building Stock ◽

Existing Building

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High spatiotemporal resolution PM2.5 concentration estimation with satellite and ground observations: A case study in New York City

2018 IEEE International Conference on Environmental Engineering (EE) ◽

10.1109/ee1.2018.8385255 ◽

2018 ◽

Cited By ~ 2

Author(s):

Yongquan Zhao ◽

Bo Huang ◽

Andrea Marinoni ◽

Paolo Gamba

Keyword(s):

New York ◽

New York City ◽

York City ◽

Spatiotemporal Resolution ◽

High Spatiotemporal Resolution ◽

Concentration Estimation ◽

Pm2.5 Concentration

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Life-Cycle Assessment of a Rural Terraced House: A Struggle with Sustainability of Building Renovations

Energies ◽

10.3390/en14092472 ◽

2021 ◽

Vol 14 (9) ◽

pp. 2472

Author(s):

Karel Struhala ◽

Milan Ostrý

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Environmental Impacts ◽

Energy Sources ◽

Construction Sector ◽

Building Stock ◽

Existing Building ◽

New Construction ◽

Consumption Energy

Contemporary research stresses the need to reduce mankind’s environmental impacts and achieve sustainability. One of the keys to this is the construction sector. New buildings have to comply with strict limits regarding resource consumption (energy, water use, etc.). However, they make up only a fraction of the existing building stock. Renovations of existing buildings are therefore essential for the reduction of the environmental impacts in the construction sector. This paper illustrates the situation using a case study of a rural terraced house in a village near Brno, Czech Republic. It compares the life-cycle assessment (LCA) of the original house and its proposed renovation as well as demolition followed by new construction. The LCA covers both the initial embodied environmental impacts (EEIs) and the 60-year operation of the house with several variants of energy sources. The results show that the proposed renovation would reduce overall environmental impacts (OEIs) of the house by up to 90% and the demolition and new construction by up to 93% depending on the selected energy sources. As such, the results confirm the importance of renovations and the installation of environmentally-friendly energy sources for achieving sustainability in the construction sector. They also show the desirability of the replacement of inefficient old buildings by new construction in specific cases.

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A Contemporary Connection to Historic Buildings Through Transparency and Reusability

Open House International ◽

10.1108/ohi-03-2015-b0009 ◽

2015 ◽

Vol 40 (3) ◽

pp. 52-60

Author(s):

Meltem Zehra Nevzat ◽

Cemil Atakara

Keyword(s):

Glass Structure ◽

Solution Technique ◽

High Tech ◽

Historic Buildings ◽

Structural Glass ◽

Architectural Drawings ◽

Existing Building ◽

Floor Systems ◽

The 19Th Century

From the 19th century onwards, glass has been used intensively in buildings. During the design process, the importance of aesthetics is very common for architects in general. The application of glass walls as part of the building’s structure has given flexibility in design together with transparency as well as aesthetics. Structural glass systems have been used in different building types for example office, residential, educational, commercial, transportation, cultural … Beyond the high - rise and high - tech buildings, structural glass systems have been applied also to historic buildings during their conservation process. The adaption of the structural glass system and the opportunity to reuse the existing building are other important aspects to be discussed. In this article, the literature review will be formed with a brief explanation of transparency in contemporary architecture, structural glass systems focusing on ‘suspended glass systems with pre-stressed cable trusses’ (SGSPCT) which has three application methods; 1) between floor systems 2) independent body systems 3) distance bridging systems and the reusability of existing buildings. The ‘between floor system’ which is commonly used as a contemporary solution technique for historic buildings together with its effects, will also be analysed with the help of a case study, Esma Sultan Mansion. This historic building’s present glass structure will be studied to create an alternative proposal less dependent to the existing building. Another case study will be the Ballapais Abbey. Part of this gothic building (the common room) that has collapsed in the past will be analysed. An independent glass structured annex designed with SGSPCT will be proposed giving joint details of the adaptation to the existing building. This case of study is a literature analysis based on books, internet resources, articles and architectural drawings, like plans, sections and details related to the buildings. Both case studies will be proposing an alternative glass structured annex that is focusing on gained transparency and reusability in respect to the existing historic building.

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Assessing ventilation strategies in a school with observed indoor air problems

Facilities ◽

10.1108/f-03-2021-0019 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Ulrika Uotila ◽

Arto Saari ◽

Juha-Matti Kalevi Junnonen ◽

Lari Eskola

Keyword(s):

Decision Making ◽

Air Quality ◽

Indoor Air Quality ◽

Indoor Air ◽

Final Decision ◽

Target Number ◽

Content Type ◽

Existing Building ◽

Ventilation Strategies

Purpose Poor indoor air quality in schools is a worldwide challenge that poses health risks to pupils and teachers. A possible response to this problem is to modify ventilation. Therefore, the purpose of this paper is to pilot a process of generating alternatives for ventilation redesign, in an early project phase, for a school to be refurbished. Here, severe problems in indoor air quality have been found in the school. Design/methodology/approach Ventilation redesign is investigated in a case study of a school, in which four alternative ventilation strategies are generated and evaluated. The analysis is mainly based on the data gathered from project meetings, site visits and the documents provided by ventilation and condition assessment consultants. Findings Four potential strategies to redesign ventilation in the case school are provided for decision-making in refurbishment in the early project phase. Moreover, the research presents several features to be considered when planning the ventilation strategy of an existing school, including the risk of alterations in air pressure through structures; the target number of pupils in classrooms; implementing and operating costs; and the size of the space that ventilation equipment requires. Research limitations/implications As this study focusses on the early project phase, it provides viewpoints to assist decision-making, but the final decision requires still more accurate calculations and simulations. Originality/value This study demonstrates the decision-making process of ventilation redesign of a school with indoor air problems and provides a set of features to be considered. Hence, it may be beneficial for building owners and municipal authorities who are engaged in planning a refurbishment of an existing building.

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