Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermodynamic and exergoeconomic analysis of a non-domestic Passivhaus retrofit
https://orcid.org/0000-0002-0566-555X
AbstractThis paper presents a thermodynamic and exergoeconomic analysis of a recently-retrofitted Passivhaus non-domestic building. The selected case study, a Community Centre located in London, underwent a deep-energy retrofit in 2011, becoming the first ‘non-domestic Passivhaus’ retrofit in the country. As the building was retrofitted per Passivhaus standards, which is based solely on First Law analysis, a thermodynamic investigation can provide a novel means by which to assess its exergy efficiency and cost-effectiveness. As such, the aim of this paper is to conduct a comprehensive exergy and exergoeconomic analysis, presenting novel performance indicators for the pre-retrofit and post-retrofit Passivhaus building. First law outputs show that the improvement presents high levels of energy savings (75.6%), reductions in carbon emissions (64.5%), and occupant thermal comfort improvement (28.8%). Second law outputs present a reduction in primary exergy input reduction of 56.4% and exergy destructions of 60.4%, leading to improve building exergy efficiency from 9.8% to 18.0%. Nevertheless, exergoeconomically the building did not perform as expected due to high capital cost and exergy destructions cost rates. These results give an insight into the thermodynamic impact of the Passivhaus approach, providing a critical assessment of the strengths and limitations of the standard under both thermodynamic laws.
HighlightsAssessment of a Passivhaus retrofit design under both thermodynamic laws.The Passivhaus case study design improves building's exergy performance (Ψbui = 18%).Passivhaus presents the highest exergy destruction rates at electric appliances.High exergy destructions and capital investment costs harms project's profitability.The design presents a capital cost rate of £1.78/h with a revenue rate of £0.84/h.
Thermodynamic and exergoeconomic analysis of a non-domestic Passivhaus retrofit
https://orcid.org/0000-0002-0566-555X
AbstractThis paper presents a thermodynamic and exergoeconomic analysis of a recently-retrofitted Passivhaus non-domestic building. The selected case study, a Community Centre located in London, underwent a deep-energy retrofit in 2011, becoming the first ‘non-domestic Passivhaus’ retrofit in the country. As the building was retrofitted per Passivhaus standards, which is based solely on First Law analysis, a thermodynamic investigation can provide a novel means by which to assess its exergy efficiency and cost-effectiveness. As such, the aim of this paper is to conduct a comprehensive exergy and exergoeconomic analysis, presenting novel performance indicators for the pre-retrofit and post-retrofit Passivhaus building. First law outputs show that the improvement presents high levels of energy savings (75.6%), reductions in carbon emissions (64.5%), and occupant thermal comfort improvement (28.8%). Second law outputs present a reduction in primary exergy input reduction of 56.4% and exergy destructions of 60.4%, leading to improve building exergy efficiency from 9.8% to 18.0%. Nevertheless, exergoeconomically the building did not perform as expected due to high capital cost and exergy destructions cost rates. These results give an insight into the thermodynamic impact of the Passivhaus approach, providing a critical assessment of the strengths and limitations of the standard under both thermodynamic laws.
HighlightsAssessment of a Passivhaus retrofit design under both thermodynamic laws.The Passivhaus case study design improves building's exergy performance (Ψbui = 18%).Passivhaus presents the highest exergy destruction rates at electric appliances.High exergy destructions and capital investment costs harms project's profitability.The design presents a capital cost rate of £1.78/h with a revenue rate of £0.84/h.
Thermodynamic and exergoeconomic analysis of a non-domestic Passivhaus retrofit
https://orcid.org/0000-0002-0566-555X
AbstractThis paper presents a thermodynamic and exergoeconomic analysis of a recently-retrofitted Passivhaus non-domestic building. The selected case study, a Community Centre located in London, underwent a deep-energy retrofit in 2011, becoming the first ‘non-domestic Passivhaus’ retrofit in the country. As the building was retrofitted per Passivhaus standards, which is based solely on First Law analysis, a thermodynamic investigation can provide a novel means by which to assess its exergy efficiency and cost-effectiveness. As such, the aim of this paper is to conduct a comprehensive exergy and exergoeconomic analysis, presenting novel performance indicators for the pre-retrofit and post-retrofit Passivhaus building. First law outputs show that the improvement presents high levels of energy savings (75.6%), reductions in carbon emissions (64.5%), and occupant thermal comfort improvement (28.8%). Second law outputs present a reduction in primary exergy input reduction of 56.4% and exergy destructions of 60.4%, leading to improve building exergy efficiency from 9.8% to 18.0%. Nevertheless, exergoeconomically the building did not perform as expected due to high capital cost and exergy destructions cost rates. These results give an insight into the thermodynamic impact of the Passivhaus approach, providing a critical assessment of the strengths and limitations of the standard under both thermodynamic laws.
HighlightsAssessment of a Passivhaus retrofit design under both thermodynamic laws.The Passivhaus case study design improves building's exergy performance (Ψbui = 18%).Passivhaus presents the highest exergy destruction rates at electric appliances.High exergy destructions and capital investment costs harms project's profitability.The design presents a capital cost rate of £1.78/h with a revenue rate of £0.84/h.
Thermodynamic and exergoeconomic analysis of a non-domestic Passivhaus retrofit
García Kerdan, Iván (Autor:in) / Raslan, Rokia (Autor:in) / Ruyssevelt, Paul (Autor:in) / Vaiciulyte, Sandra (Autor:in) / Morillón Gálvez, David (Autor:in)
Building and Environment ; 117 ; 100-117
02.03.2017
18 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Thermodynamic and exergoeconomic analysis of a non-domestic Passivhaus retrofit
| BASE | 2017
Online Contents | 2011