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Rohdin, Patrik
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Publications (10 of 57) Show all publications
Blomqvist, S., Glad, W. & Rohdin, P. (2022). Ten years of energy efficiency—Exploring the progress of barriers and drivers in the swedish residential and services sector. Energy Reports, 8, 14726-14740
Open this publication in new window or tab >>Ten years of energy efficiency—Exploring the progress of barriers and drivers in the swedish residential and services sector
2022 (English)In: Energy Reports, E-ISSN 2352-4847, Vol. 8, p. 14726-14740Article in journal (Refereed) Published
Abstract [en]

Making buildings more energy efficient is an important part of achieving the European Union's energy and climate goals, which several directives, policies, and measures has addressed over the years. This paper aims to study changes over a 10-year period in perception on barriers to and drivers for energy efficiency in the Swedish building sector and identifying success factors. The data collection consists of surveys conducted in 2010 and 2020 among organizations that mainly build, own, and manage multi-dwelling buildings. Besides the overall result, special focus is given to changes depending on type of ownership, size of organization, and organizational hierarchy. Lack of time or other priorities and slim organizations remain the most important barriers, which is most evident among small organizations. Reducing cost remains the major driver. The uncertainty surrounding a rising energy price has diminished and cost-effective solutions are more adaptable. More capital for energy efficiency is available, particularly in the private sector. Furthermore, the result acknowledges the impact of regulatory measures. The study recognizes a connection between organizational development and the integration of energy efficiency in an organizations’ agenda. Future challenges are related to hidden costs and knowledge acquisition.

Place, publisher, year, edition, pages
Elsevier, 2022
Keywords
Barriers; Drivers; Energy efficiency; Residential building sector
National Category
Energy Systems Construction Management
Identifiers
urn:nbn:se:liu:diva-190458 (URN)10.1016/j.egyr.2022.10.439 (DOI)000892831900004 ()2-s2.0-85141771799 (Scopus ID)
Note

Funding: FORMAS a Swedish Research Council for Sustainable Development [2022-01941]; Swedish Agency for Economic and Regional Growth; European Regional Development Fund

Available from: 2022-12-09 Created: 2022-12-09 Last updated: 2023-03-20Bibliographically approved
Blomqvist, S., Ödlund, L. & Rohdin, P. (2022). Understanding energy efficiency decisions in the building sector – A survey of barriers and drivers in Sweden. Cleaner Engineering and Technology, 9, Article ID 100527.
Open this publication in new window or tab >>Understanding energy efficiency decisions in the building sector – A survey of barriers and drivers in Sweden
2022 (English)In: Cleaner Engineering and Technology, ISSN 2666-7908, Vol. 9, article id 100527Article in journal (Refereed) Published
Abstract [en]

A sustainable building sector with a more energy-efficient and decarbonized building stock is important for mitigating climate change. This paper contributes to knowledge on how to increase energy efficiency investments by presenting a nationwide survey on the perception of barriers and drivers for energy efficiency among 216 professionals in the Swedish building sector. This study explores economic, behavioral, and organizational conditions and analyzes the conventional dependencies on (1) type of ownership and (2) size of the organization, but also adds analysis on (3) degree of urbanization, (4) climate zones and (5) profession. Together these dependencies enhance a custom design of policies and measures. The findings show that hidden costs and bounded rationality were prominent barriers due to problems to acquire and analyze information, which needs to be addressed. In addition to the economic driver to reduce cost, several behavioral and organizational drivers were emphasized. There were distinct economic differences depending on the type of ownership and size of the organizations. Well-developed organizational structures were important factors for energy efficiency, which policies and measures should address. Differences were seen between organizations operating in rural areas and more densely populated areas. An improved indoor climate was important in northern climate zones.

Place, publisher, year, edition, pages
Elsevier, 2022
Keywords
Energy efficiency; Building sector; Barriers; Drivers
National Category
Energy Systems
Identifiers
urn:nbn:se:liu:diva-190457 (URN)10.1016/j.clet.2022.100527 (DOI)000981177200017 ()2-s2.0-85132847010 (Scopus ID)
Note

Funding: Swedish Agency for Economic and Regional Growth through the European Regional Development Fund

Available from: 2022-12-09 Created: 2022-12-09 Last updated: 2023-06-13Bibliographically approved
Blomqvist, S., Andersson, A., Spinos, O., Tonelid, J., Rohdin, P. & Ödlund, L. (2021). Analysing Conflicting Energy and Climate Targets between Municipalities, Energy Utilities and Housing Companies in Sweden. In: : . Paper presented at Energy Evaluation Europe 2021 Conference, Here East, Olympic Park, London, UK, June 29-July 1, 2020.
Open this publication in new window or tab >>Analysing Conflicting Energy and Climate Targets between Municipalities, Energy Utilities and Housing Companies in Sweden
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2021 (English)Conference paper, Oral presentation only (Other academic)
Abstract [en]

To achieve the Sustainable Development Goals (SDGs), it is important that the SDGs are integrated atboth national and municipal levels, and that the business sector is involved in this work. This paper analyses howwell the SDGs are integrated as well if there are any conflicting energy and climate targets among municipalities,energy utilities and housing companies in Sweden, and in relation to national and EU targets. The targets arecategorized as; climate impact, efficient energy use, and share of renewable resources. Three key indicators arein focus; timeline and level of targets, terminology, and system boundaries. The study focuses on the Linköpingand Norrköping region, which has 300,000 inhabitants and is located 150 km southwest of Stockholm, Sweden.By using directives, company annual reports and interviews, the companies’ decision-making processes andtargets have been mapped.The results identify differences in system boundaries and timelines as reasons to potential conflictsregarding climate targets. Ambitious targets at the municipal level are identified as a driving force, but with targetfulfilment two decades or more before national and EU targets. Regarding the category of efficient energy use,the level of targets and terminology differs. Lastly, regarding renewable resources, terminology and timelinediffer. Furthermore, it is concluded that the SDGs are not integrated to a large extent in the business sector orat a local level. Overall, this may create challenges in communication, collaboration and exchange of knowledgein order to succeed and achieve the SDGs. 

National Category
Energy Systems
Identifiers
urn:nbn:se:liu:diva-180238 (URN)
Conference
Energy Evaluation Europe 2021 Conference, Here East, Olympic Park, London, UK, June 29-July 1, 2020
Note

The link in this post leads to the paper presented at the conference whose name is specified above. Paper has not been published according to the procedure usual in academic publishing. In this case, identifiers are missing, which results in the conference contribution not being classified as published paper.

Available from: 2021-10-13 Created: 2021-10-13 Last updated: 2023-03-20Bibliographically approved
Milic, V., Rohdin, P. & Moshfegh, B. (2021). Further development of the change-point model - Differentiating thermal power characteristics for a residential district in a cold climate. Energy and Buildings, 231, Article ID 110639.
Open this publication in new window or tab >>Further development of the change-point model - Differentiating thermal power characteristics for a residential district in a cold climate
2021 (English)In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 231, article id 110639Article in journal (Refereed) Published
Abstract [en]

The building and service sector accounts for nearly 40% of total energy use in Sweden. The existing, historic building stock accounts for large part of this energy use and comprises an important part of the national pursuit to increase energy efficiency. One main problem for decreasing energy use in the existing building stock is the lack of data describing thermal performance characteristics. This paper presents a novel development of the change-point model for predicting the thermal performance of buildings using selected time periods based on time-dependent variations in climate and user behavior. The predicted thermal power characteristics include total specific heat losses (Q(total)), energy use for hot water circulation (HWC) and hot tap water (HTW), and balance temperature. A residential district with 73 historic buildings in Linkoping, Sweden, has been used as the study object. The developed model is shown to be effective and robust for describing building thermal performance. The average R-2 was 0.70 for predictions of specific heat losses. The sensitivity analyses conclude that the selected time steps and months correspond to the highest R-2 value. The average variation width for prediction of the balance temperature is 0.9 degrees C for buildings in the interquartile range based on a three-year comparison of hourly heating power supply data. Moreover, from a property owner perspective, the model is shown to be useful for identifying deviating thermal power characteristics and can easily be used to get an overview of a district. (C) 2020 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA, 2021
Keywords
Thermal power characteristics; Hourly heating power supply data; Change-point model; Hot water circulation; Hot tap water; Residential district; Time-dependent
National Category
Building Technologies
Identifiers
urn:nbn:se:liu:diva-173008 (URN)10.1016/j.enbuild.2020.110639 (DOI)000604572900007 ()
Note

Funding Agencies|Swedish Energy AgencySwedish Energy Agency [P31669-3, P44335-1]

Available from: 2021-01-27 Created: 2021-01-27 Last updated: 2021-04-20
Thollander, P., Karlsson, M., Rohdin, P., Wollin, J. & Rosenqvist, J. (2020). Introduction to industrial energy efficiency: energy auditing, energy management, and policy issues (1ed.). Academic Press
Open this publication in new window or tab >>Introduction to industrial energy efficiency: energy auditing, energy management, and policy issues
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2020 (English)Book (Other academic)
Place, publisher, year, edition, pages
Academic Press, 2020. p. 380 Edition: 1
Keywords
Energiförbrukning, Energisparande
National Category
Energy Systems
Identifiers
urn:nbn:se:liu:diva-169672 (URN)9780128172476 (ISBN)
Available from: 2020-09-16 Created: 2020-09-16 Last updated: 2020-12-09Bibliographically approved
Blomqvist, S., Amiri, S., Rohdin, P. & Ödlund, L. (2019). Analyzing the Performance and Control of a Hydronic Pavement System in a District Heating Network. Energies, 12(11), Article ID 2078.
Open this publication in new window or tab >>Analyzing the Performance and Control of a Hydronic Pavement System in a District Heating Network
2019 (English)In: Energies, E-ISSN 1996-1073, Vol. 12, no 11, article id 2078Article in journal (Refereed) Published
Abstract [en]

A hydronic pavement system (HPS) is an alternative method to clear snow and ice, which avoids the use of salt, sand, and fossil fuel in conventional snow clearance, and minimizes the risk of accidents. The aim is to analyze the performance of different control strategies for a 35,000 m2 HPS utilizing heat from a district heating and cooling (DHC) system. The key performance indicators are (1) energy performance of the HPS, and (2) primary energy use, (3) electricity production and (4) greenhouse gas (GHG) emissions from the DHC system. The methodology uses a simulation model of the HPS and an optimization model of the DHC system. Three operational strategies are analyzed: A reference scenario based on the current control strategy, and scenarios where the HPS is shut down at temperatures below −10 °C and −5 °C. The study shows that the DHC return temperature is suitable for use. By operational strategies, use during peak demand in the DHC system can be avoided, resulting in reduced use of fossil fuel. Moreover, the energy use of the HPS could be reduced by 10% and the local GHG emissions by 25%. The study emphasizes that the HPS may have positive effects on global GHG emissions, as it enables electricity production from renewable resources.

Place, publisher, year, edition, pages
Basel: MDPI, 2019
National Category
Energy Systems Energy Engineering
Identifiers
urn:nbn:se:liu:diva-157189 (URN)10.3390/en12112078 (DOI)000472635900045 ()
Note

Funding agencies: Swedish Agency for Economic and Regional Growth; Tekniska verken AB; E. ON Sweden AB; Stangastaden AB; AB Lejonfastigheter; Fastighets AB L E Lundberg; Akademiska Hus AB

Available from: 2019-06-04 Created: 2019-06-04 Last updated: 2023-08-28Bibliographically approved
Thollander, P., Karlsson, M., Rohdin, P. & Rosenqvist, J. (2019). Energieffektivisering: energikartläggning, energiledning och styrmedel (1:1ed.). Lund: Studentlitteratur AB
Open this publication in new window or tab >>Energieffektivisering: energikartläggning, energiledning och styrmedel
2019 (Swedish)Book (Other academic)
Abstract [sv]

Effektiv energianvändning i svensk tillverkningsindustri är en nyckelfaktor för att svenska företag, branscher och industrin som helhet även fortsättningsvis ska vara konkurrenskraftiga på en global marknad med knappare resurser. Denna bok är ett led i den riktningen.



Boken är uppdelad i tre delar: Del I har sin utgångspunkt i energi­effektiviseringsgapet och fokuserar på energikartläggning och energieffektivisering av företag, framför allt ur ett tekniskt perspektiv. Del II har sin utgångspunkt i energiledningsgapet och fokuserar på energiledning samt hinder och incitament för energieffektivisering i svensk tillverkningsindustri. Del III har sin utgångspunkt i styrmedelsgapet och inriktas mot styrmedel för energieffektivisering och hur dessa kan designas, implementeras och utvärderas. 


De två första delarna riktar sig framför allt till studenter vid svenska läro­­säten samt till energi- och miljöansvariga, teknikkonsulter, kommunala tillsynstjänstemän och andra offentliga aktörer vid exempelvis regionala energikontor. Del III riktar sig i första hand till aktörer som administrerar och ansvarar för styrmedel på nationell, regional och lokal nivå. Denna del kan även vara till nytta för koncerner som vill ta ett helhetsgrepp på energifrågan samt till företag som vill minska energianvändningens negativa miljöpåverkan i hela värdekedjan, inklusive underleverantörer.

Place, publisher, year, edition, pages
Lund: Studentlitteratur AB, 2019. p. 248 Edition: 1:1
Keywords
Energikartläggning, energiledning, styrmedel, industri, energianvändning, hinder och drivkrafter, energiprogram, enhetsprocess, energilära, Energisparande, Industri - ekonomiska aspekter, Industri - miljöaspekter
National Category
Energy Engineering
Identifiers
urn:nbn:se:liu:diva-156662 (URN)9789144092478 (ISBN)
Available from: 2019-05-06 Created: 2019-05-06 Last updated: 2021-05-04Bibliographically approved
Blomqvist, S., La Fleur, L., Amiri, S., Rohdin, P. & Ödlund (Trygg), L. (2019). The Impact on System Performance When Renovating a Multifamily Building Stock in a District Heated Region. Sustainability, 11(8), Article ID 2199.
Open this publication in new window or tab >>The Impact on System Performance When Renovating a Multifamily Building Stock in a District Heated Region
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2019 (English)In: Sustainability, E-ISSN 2071-1050, Vol. 11, no 8, article id 2199Article in journal (Other academic) Published
Abstract [en]

In Sweden, 90% of multifamily buildings utilize district heat and a large portion is in need of renovation. The aim is to analyze the impact of renovating a multifamily building stock in a district heating and cooling system, in terms of primary energy savings, peak power demands, electricity demand and production, and greenhouse gas emissions on local and global levels. The study analyzes scenarios regarding measures on the building envelope, ventilation, and substitution from district heat to ground source heat pump. The results indicate improved energy performance for all scenarios, ranging from 11% to 56%. Moreover, the scenarios present a reduction of fossil fuel use and reduced peak power demand in the district heating and cooling system ranging from 1 MW to 13 MW, corresponding to 4–48 W/m2 heated building area. However, the study concludes that scenarios including a ground source heat pump generate significantly higher global greenhouse gas emissions relative to scenarios including district heating. Furthermore, in a future fossil-free district heating and cooling system, a reduction in primary energy use will lead to a local reduction of emissions along with a positive effect on global greenhouse gas emissions, outperforming measures with a ground source heat pump.

Place, publisher, year, edition, pages
MDPI, 2019
Keywords
district heating, multifamily buildings, renovation, primary energy use, energy system modeling, greenhouse gas emissions
National Category
Energy Systems
Identifiers
urn:nbn:se:liu:diva-157080 (URN)10.3390/su11082199 (DOI)000467752200012 ()2-s2.0-85065422245 (Scopus ID)
Available from: 2019-05-27 Created: 2019-05-27 Last updated: 2023-03-20Bibliographically approved
Nilsson, E., Andersson, E., Rohdin, P. & Thollander, P. (2018). Benchmarking of space heating demand for a sample of foundries in Nordic climate. In: Eceee Industrial Summer Study Proceedings, 2018-June, pp. 345-352.: . Paper presented at Eceee Industrial Summer Study Proceedings, June, 2018 (pp. 345-352). European Council for an Energy Efficient Economy (ECEEE)
Open this publication in new window or tab >>Benchmarking of space heating demand for a sample of foundries in Nordic climate
2018 (English)In: Eceee Industrial Summer Study Proceedings, 2018-June, pp. 345-352., European Council for an Energy Efficient Economy (ECEEE), 2018, p. 345-352Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
European Council for an Energy Efficient Economy (ECEEE), 2018
National Category
Energy Engineering
Identifiers
urn:nbn:se:liu:diva-169038 (URN)9789198387827 (ISBN)
Conference
Eceee Industrial Summer Study Proceedings, June, 2018
Available from: 2020-09-07 Created: 2020-09-07 Last updated: 2021-08-18Bibliographically approved
Blomqvist, S., Rohdin, P. & Ödlund, L. (2018). Hållbar Region: Ett forskningsprojekt för ökad samverkan mellan energi- och fastighetsbolag. Etapp 2 2016-2018. Linköping: Linköping University Electronic Press
Open this publication in new window or tab >>Hållbar Region: Ett forskningsprojekt för ökad samverkan mellan energi- och fastighetsbolag. Etapp 2 2016-2018
2018 (Swedish)Report (Other academic)
Abstract [sv]

Det är i samverkan mellan energibolag och slutanvändare som effektiva energisystem kan skapas. Med ett systemperspektiv mellan tillförsel- och användarsidan inom energisystemet kan forskningsprojektet Hållbar Region bidra med en pusselbit till framtidens energisystem, med ökad energieffektivitet och minskad klimatpåverkan som resultat.

Forskningsprojektets syfte är att genom samverkan mellan universitet, energi- och fastighetsbolag arbeta för att skapa en hållbar och resurseffektiv region. Detta delvis genom att utbyta kunskap kring utmaningar och på så vis öka förståelsen för varandras verksamheter, både inom och mellan branscherna.

Under etapp 1 utvecklades simulerings- och optimeringsmodeller gällande renoveringspaket av fastigheter och energisystemet. Arbetet fortskrider löpande med ytterligare beräkningar och scenarioanalyser. Under etapp 2 har många delstudier genomförts och som vardera ger input och kunskap för vidare utveckling. Några av resultaten uppkomna under etapp 2 är:

Betong bättre än trä?

En fallstudie påvisar att ett flerbostadshus med betongstomme har lägre miljöpåverkan än en liknande huskropp av träkonstruktion. Se mer i avsnitt 5.1

Vikten av utökad och förbättrad kundkontakt!

En studie av den framtida värmemarknaden visar på vikande efterfrågan. Nya tillämpningsområden, ökad och förbättrad kommunikation är viktiga aspekter för att möta utmaningen. Se mer i avsnitt 5.2

Tillvarata överskottsvärme!

Studien undersöker alternativ för att nyttiggöra överskottsvärme i fjärrvärmenätet, som möjliggörs genom samarbete med närliggande verksamheter. Att nyttogöra värmen genom en absorptionsdriven värmepump är det som förordas. Se mer i avsnitt 5.3

Beräkningar av primärenergifaktorer!

En studie analysera premiärenergifaktorer för svensk fjärrvärme utifrån flertalet perspektiv och metoder. De beräknade faktorerna blir betydande mindre än Boverkets. Se mer i avsnitt 5.4

Prismodellens roll för incitament till energieffektivisering!

Flertalet prismodeller analyseras utifrån ett klimatperspektiv. En modell med säsongsvarierande prissättning förordas och där effektuttaget lyfts fram som en nyckel. Se mer i avsnitt 5.5

Nyttan av en dynamisk framledningstemperatur!

Studien undersöker effekt- och flödesutjämnande körstrategier för att möta dygns- och säsongsvariationer av efterfrågan på värme. Studien påvisar ökad elverkningsgrad och ett högre temperaturspann möjliggör bättre effekt- och flödesutjämning. Se mer i avsnitt 5.6

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2018. p. 29
Keywords
Hållbar region, energisystem, samverkan, energibolag, fastighetsbolag, systemperspektiv, fjärrvärme, simulering, optimering, scenarioanalys
National Category
Energy Systems
Identifiers
urn:nbn:se:liu:diva-153481 (URN)
Projects
Hållbar Region
Note

Delrapport 2 från forskningsprojektet Hållbar Region vid Linköpings universitet.

Available from: 2018-12-19 Created: 2018-12-19 Last updated: 2018-12-20Bibliographically approved
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