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Berglund, D., Kharazmi, P., Miliutenko, S., Björk, F. & Malmqvist, T. (2018). Comparative life-cycle assessment for renovation methods of waste water sewerage systems for apartment buildings. Journal of Building Engineering, 19, 98-108
Open this publication in new window or tab >>Comparative life-cycle assessment for renovation methods of waste water sewerage systems for apartment buildings
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2018 (English)In: Journal of Building Engineering, E-ISSN 2352-7102, Vol. 19, p. 98-108Article in journal (Refereed) Published
Abstract [en]

This comparative life-cycle assessment highlights three main alternatives for renovation of waste water sewerage: pipe replacement, cured- in- place pipe (CIPP) lining (also called sliplining) and renovation by coatings. The functional unit of this study is a six-story block house that was built in 1960 and has 29 apartments. The characterized results of environmental impacts display an advantage for CIPP-lining over pipe replacement in 14 of the 18 studied impact categories. Regarding those categories in which impacts were comparatively large, when looking at the average impact from a European citizen according to the ReCiPe methodology for life cycle inventory list, pipe replacement has greater impacts than CIPP-lining. In general, the impacts of pipe replacement are related to new tiles, expanded polyester cement, the screed, and the material for waterproofing, as well as the electricity needed for drying the structure. The CIPP-lining method displays higher impacts than pipe replacement in just four categories. These impacts are, to a large extent, caused by the use of consumables such as gloves and cotton cloths. From an LCA-perspective, the study shows that the CIPP and coatings relining methods have advantages over pipe replacement under the condition that the technical lifetime is the same for these methods. Still, the uncertainty of service life, as well as Bisphenol A (BPA) emissions, remain as issues of concern for further study. There are also other differences among the alternatives that ultimately influence a property owner's choice of method, such as costs, inconvenience for the residents, renewal of bathroom interiors, and the way in which the property owner values the alternative technologies.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Cured-in-place pipe, Life-cycle assessment, Relining, Waste water pipeline
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:kth:diva-228701 (URN)10.1016/j.jobe.2018.04.019 (DOI)000438148500011 ()2-s2.0-85046804116 (Scopus ID)
Funder
Swedish Research Council Formas, 2013-1804
Note

QC 20180529

Available from: 2018-05-29 Created: 2018-05-29 Last updated: 2019-11-14Bibliographically approved
Kharazmi, P., Berglund, D., Miliutenko, S., Björk, F. & Malmqvist, T. (2018). Comparative Life-Cycle Assessment for Renovation Methods of Waste-Water Sewerage Systems in Apartment Buildings – Comprehensive Data used in SimaPro for Model and Analyse LCA.
Open this publication in new window or tab >>Comparative Life-Cycle Assessment for Renovation Methods of Waste-Water Sewerage Systems in Apartment Buildings – Comprehensive Data used in SimaPro for Model and Analyse LCA
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2018 (English)Data set
National Category
Natural Sciences
Identifiers
urn:nbn:se:kth:diva-225157 (URN)
Funder
Swedish Research Council Formas
Note

QC 20180416

Available from: 2018-04-01 Created: 2018-04-01 Last updated: 2019-05-03Bibliographically approved
Berglund, D., Kharazmi, P., Miliutenko, S., Björk, F. & Malmqvist, T. (2018). Relining eller rörbyte - en jämförelse med LCA.
Open this publication in new window or tab >>Relining eller rörbyte - en jämförelse med LCA
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2018 (Swedish)Report (Other (popular science, discussion, etc.))
Abstract [sv]

Denna jämförande livscykelbedömning belyser tre huvudalternativ för renovering av avloppsrör; rörbyte, relining med rörfoder (strumpmetoden, CIPP-lining) som även kallas sliplining och renovering icke-bärande plastbeläggningar. Den funktionella enheten i denna studie är ett sex våningar högt punkthus som byggdes 1960 och som har 29 lägenheter. De redovisade resultaten av miljöpåverkan visar att strumpmetoden har fördelar framför rörbyte i 14 av de 18 undersökta kategorierna. När det gäller de kategorier där påverkningarna var förhållandevis stora, jämfört med en genomsnittliga europeisk medborgares årliga miljöbelastning, enligt ReCiPe-metoden, så har renoveringmetoden rörbyte större påverkan än strumpmetoden. Påverkningarna av rörbyte är främst relaterade till nya klinkerplattor, EPS-cement, avjämningsmassor och materialet för tätskikt, och även den el som behövs för att torka byggnaden. Strumpmetoden visar högre påverkan än rörbyte i fyra kategorier. Dessa påverkningar orsakas till stor del av användningen av förbrukningsmaterial som handskar och bomullstrasor. Ur ett LCA-perspektiv visar studien att strumpmetoden och icke-bärande beläggningsreningsmetoder har fördelar framför rörbyte under förutsättning att den tekniska livslängden är densamma. Osäkerheten om livslängden och även frågan om utsläpp av Bisphenol A (BPA) är aspekter som behöver fortsatta studier. Det finns också andra faktorer som till sist påverkar vilken metod för stamrenovering som en fastighetsägare väljer; kostnader, besvär för de boende, behov av renovering av badrum till sist hur fastighetsägaren själv värderar de olika alternativen.

Publisher
p. 29
National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-263234 (URN)
Note

QC 20191105

Available from: 2019-11-04 Created: 2019-11-04 Last updated: 2019-11-05Bibliographically approved
Kilkis, S., Wang, C., Björk, F. & Martinac, I. (2017). Cleaner energy scenarios for building clusters in campus areas based on the Rational Exergy Management Model. Journal of Cleaner Production, 155, 72-82
Open this publication in new window or tab >>Cleaner energy scenarios for building clusters in campus areas based on the Rational Exergy Management Model
2017 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 155, p. 72-82Article in journal (Refereed) Published
Abstract [en]

Principles based on the quality of energy, namely exergy, can assist in attaining a more efficient and cleaner energy supply structure. This paper analyzes two building clusters in campus areas based on a stepwise approach with four steps according to the Rational Exergy Management Model. The clusters involve 8 buildings at the KTH Royal Institute of Technology and those in the Albano district that is a former industrial site and will become a joint campus area in Stockholm. The energy supply for the campus and urban vicinity includes a combined heat and power plant with district heating and cooling. In this context, the energy and exergy profiles of the building clusters are compared. The level of exergy match in the energy system is analyzed. Four scenarios are then devised, which involve energy savings and different shares of various supply options. These include a new biofuel unit, seawater heat pumps, large scale aquifer thermal energy storage, heat supply from solar collectors, and electricity and heat from photovoltaic thermal arrays. The present case and four scenarios are found to have exergy matches that range between 0.49 and 0.81. The scenarios indicate that savings of 16 GWh energy, 9.6 GWh exergy, and 2663 tonnes of carbon dioxide emissions are possible. The paper contributes to exergy based analyzes for campus areas and concludes with the prospect of using campus areas as pioneering case studies for advancing the transition to cleaner energy scenarios.

Place, publisher, year, edition, pages
Elsevier, 2017
Keywords
Building clusters, Campus, Energy, Exergy, CO2 emissions, Scenarios
National Category
Energy Systems
Identifiers
urn:nbn:se:kth:diva-208716 (URN)10.1016/j.jclepro.2016.10.126 (DOI)000401887700010 ()2-s2.0-85006269377 (Scopus ID)
Note

QC 20170612

Available from: 2017-06-12 Created: 2017-06-12 Last updated: 2018-02-27Bibliographically approved
Kharazmi, P. & Björk, F. (2016). Investigation of relined rehabilitated piping in residential buildings. In: Proceedings of the CIB World Building Congress 2016: . Paper presented at CIB World Building Congress 2016 (pp. 284-291). , 5
Open this publication in new window or tab >>Investigation of relined rehabilitated piping in residential buildings
2016 (English)In: Proceedings of the CIB World Building Congress 2016, 2016, Vol. 5, p. 284-291Conference paper, Published paper (Other academic)
Abstract [en]

In this paper, rehabilitation methods for piping systems by relining in Sweden are reviewed. The paper also includes analyzing relined pipes which have been in the field between one to ten years to evaluate the quality and performance of the relining as well as typical problems which can occur. The investigated samples were sent to the laboratory for investigation and since they were not randomly taken out, the notations in this study should not be an indication of relining performance in general. However it can be said with certainty that improvement in technology is needed which is the reason of the study.

National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-263004 (URN)978-952-15-3744-8 (ISBN)
Conference
CIB World Building Congress 2016
Note

QC 20191104

Available from: 2019-10-25 Created: 2019-10-25 Last updated: 2019-11-04Bibliographically approved
Lind, H., Högberg, L., af Klintberg, T. & Björk, F. (2016). Knivstamodellen BoKvar för renovering av bostäder: Hur man kan få en vettig avvägning mellan insatser och hyreshöjning.
Open this publication in new window or tab >>Knivstamodellen BoKvar för renovering av bostäder: Hur man kan få en vettig avvägning mellan insatser och hyreshöjning
2016 (Swedish)Report (Other (popular science, discussion, etc.))
Publisher
p. 11
Series
Meddelande. Inst. för fastigheter och byggande ; 2016:7
National Category
Civil Engineering
Research subject
Real Estate and Construction Management
Identifiers
urn:nbn:se:kth:diva-197257 (URN)978-91-85783-72-4 (ISBN)
Projects
Sustainable Renovation Strategies, Formas
Funder
Swedish Research Council Formas
Note

QC 20170110

Available from: 2016-11-30 Created: 2016-11-30 Last updated: 2017-03-01Bibliographically approved
Sommerfeldt, N., Muyingo, H. & af Klintberg, T. (2016). Photovoltaic Systems for Swedish Prosumers: A technical and economic analysis focused on cooperative multi-family housing. Stockholm: KTH Royal Institute of Technology
Open this publication in new window or tab >>Photovoltaic Systems for Swedish Prosumers: A technical and economic analysis focused on cooperative multi-family housing
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2016 (English)Report (Other academic)
Abstract [en]

This report is designed to be a comprehensive information resource for Swedish prosumers considering an investment in solar PV systems. The target audience are multi-family cooperative houses, however much of the information is applicable to other building owners and solar energy more broadly. The primary question to be answered; is a rooftop PV investment profitable in Sweden? Naturally there are many variables that can affect the answer; therefore a Monte Carlo methodology is used to convert the uncertainties into risks, where the results can be presented as probabilities rather than a vast collection of sensitivity analyses. Several policy scenarios are tested, where the relative impact of each current program on profitability can be seen.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2016
Keywords
Solar PV, prosumer, techno-economic, Monte Carlo
National Category
Energy Systems
Research subject
Energy Technology; Economics
Identifiers
urn:nbn:se:kth:diva-185003 (URN)978-91-7595-936-8 (ISBN)
Funder
Swedish Research Council Formas, 2012-256
Available from: 2016-04-08 Created: 2016-04-08 Last updated: 2016-04-11Bibliographically approved
Kharazmi, P., Björk, F. & af Klintberg, T. (Eds.). (2015). Relining in domestic wastewater pipeline in Sweden. Paper presented at Pipeline Technology Conference 2015. Academic Conferences Publishing
Open this publication in new window or tab >>Relining in domestic wastewater pipeline in Sweden
2015 (English)Conference proceedings (editor) (Other academic)
Abstract [en]

Pipeline rehabilitation by relining materials and techniques is a solution towards degradation problem of the old pipeline instead of complete replacement. The prepared poster and paper provide a summary of the advances in technology, methods and materials of relining techniques and the important considerations such as cleaning, inspection and working environment in Sweden which is similar to the methods and considerations in other Nordic countries. This paper also includes result from a survey conducted by KTH Royal Institute of Technology regarding client’s point of view from 15000 apartments with relined pipe. The main conclusion of the interview survey was that relining has worked satisfactory in most of the cases and majority of the clients in the study have been satisfied and are willing to use relining again.

Place, publisher, year, edition, pages
Academic Conferences Publishing, 2015
National Category
Materials Engineering Composite Science and Engineering
Identifiers
urn:nbn:se:kth:diva-263020 (URN)
Conference
Pipeline Technology Conference 2015
Note

QC 20191104

Available from: 2019-10-27 Created: 2019-10-27 Last updated: 2019-11-26Bibliographically approved
Kilkis, S., Wang, C., Björk, F. & Martinac, I.Cleaner energy supply structures for campus building clusters.
Open this publication in new window or tab >>Cleaner energy supply structures for campus building clusters
(English)Manuscript (preprint) (Other academic)
Abstract [en]

The comparison of building clusters based on energy and the quality of energy (exergy) is a

key aspect for determining steps towards cleaner energy supply structures. This paper

compares two building clusters based on an integrated approach that involves building and

energy system level analyses. The first cluster involves 8 buildings with diverse energy profiles

at the KTH Royal Institute of Technology campus, including faculty buildings, laboratories, and

a data center with waste heat recovery. The second cluster involves planned buildings in the

Albano district in the vicinity of the KTH campus that will be a joint area with lecture buildings

and accommodation for 3 universities in Stockholm. The present energy supply structure for

the campus and the surrounding urban area includes a local combined heat and power (CHP)

plant. The comparison of the building clusters involve analyses based on the Rational Exergy

Management Model. Four scenarios, which involve different shares for the existing CHP units,

new biofuel CHP unit, seawater heat pumps, peak load boilers, electric boilers, large scale

aquifer thermal energy storage, heat supply from solar collectors, and electricity and heat from

photovoltaic thermal arrays are devised for comparison. The scenarios have at most an exergy

match of 0.81. The paper concludes with useful results that are in line with the aims of IEA

Annex 64 on Optimised Performance of Energy Supply Systems with Exergy Principles.

National Category
Architecture
Research subject
Civil and Architectural Engineering
Identifiers
urn:nbn:se:kth:diva-192955 (URN)
Note

QC 20160923

Available from: 2016-09-23 Created: 2016-09-23 Last updated: 2016-09-26Bibliographically approved
Kharazmi, P. & Björk, F. Durability study of reinforced polyester composite used as pipe lining under artificial aging conditions. Cogent Engineering
Open this publication in new window or tab >>Durability study of reinforced polyester composite used as pipe lining under artificial aging conditions
(English)In: Cogent Engineering, E-ISSN 2331-1916Article in journal (Refereed) Accepted
Abstract [en]

The aging of sewer infrastructure is an ongoing problem. As a result, different materials and methods are being used in alternative sewer rehabilitation approaches. This work was conducted to study one pipe lining, namely the reinforced polyester composite, under artificial aging; this was done to provide a better understanding of the material’s performance under operating conditions, where it is regularly exposed to degrading factors such as heat and water. Aging of the material was monitored by means of several tests, including thermal and mechanical analyses, water absorption and microscopy. The results showed that the combination of aging in water and at high temperatures resulted in greater effects on the material compared to aging at high temperatures in dry conditions. Although the measured properties were affected significantly when immersed in water at high temperatures, the material showed acceptable properties at lower exposure temperatures close to the expected temperature inside sewer systems.

Place, publisher, year, edition, pages
Taylor & Francis
National Category
Engineering and Technology Composite Science and Engineering Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-263791 (URN)10.1080/23311916.2019.1693719 (DOI)
Note

QCR 20191114

Available from: 2019-11-13 Created: 2019-11-13 Last updated: 2019-11-14Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-7073-2600

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