UK Passivhaus and the energy performance gap

Mitchell, Rachel; Natarajan, Sukumar

doi:10.1016/j.enbuild.2020.110240

Cited by 36 publications

(11 citation statements)

References 15 publications

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“…[41] reported carbon emission saving of up to 8.5 times lower for a refurbished university building in England retrofitted to Passivhaus standard. More studies since 2020 [42] , [43] also confirm significantly high effectiveness of such deep retrofitting in the UK.…”

Section: Insulationsmentioning

confidence: 77%

A critique on the UK’s net zero strategy

Sajjadian

2023

Sustainable Energy Technologies and Assessments

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Section: Insulationsmentioning

confidence: 77%

A critique on the UK’s net zero strategy

Sajjadian

2023

Sustainable Energy Technologies and Assessments

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“…Aspired net zero energy target was also not achieved in housing developments in the UK (Young 2015), Australia (Berry et al 2014) and in two-thirds of US case study dwellings (Thomas and Duffy 2013). The Passivhaus standard seems to be more reliable in meeting the space heating target (Mitchell and Natarajan 2020) and in delivering low energy homes (Ridley et al 2013;Mahdavi and Doppelbauer 2010;Mutani et al 2017).…”

Section: In-use Performance Evaluationsmentioning

confidence: 99%

In-use energy and carbon performance of a true zero carbon housing development in England

Oreskovic

Gupta

Strong

2021

Science and Technology for the Built Environment

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This paper systematically examines the in-use energy and carbon performance of a large case study housing development in England, designed to be net true zero carbon. Remote monitoring during a oneyear period was used to gather high-frequency data on dwelling heat use, grid electricity use, solar PV electricity generation and export and community heating system performance. Based on data from 74 dwellings, mean energy use of 76 kWh/m 2 /year and electricity use of 27.4 kWh/m 2 /year per dwelling placed the case study among the lowest energy housing developments in the UK. Nonetheless, heat usage and designed fabric efficiency fell short compared to other true zero carbon housing. The mean selfconsumption rate of generated energy of 23% calls for the provision of home batteries. Heat usage variance was more prominent compared to findings in other studies. Based on the 2018/19 carbon factors, dwellings emitted 20.2 kgCO2e/m 2 /year on average, missing the zero carbon target. As found in other studies, this was attributed to the underperforming community heating system. This study comes timely in the context of the widespread calls for net zero carbon dwellings. The findings confirm the argument that the anticipated mainstreaming of zero carbon dwellings demands shifting towards an outcome-focused design approach.

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“…Šis veiksnys vadinamas energijos vartojimo efektyvumo spraga (angl. Energy Performance Gap, EPG) (Moeller et al, 2020;Jradi et al, 2018;Zou & Alam, 2020;Mitchell & Natarajan, 2020;Khoury et al, 2017). Dėl to būtina nustatyti priežastis, lemiančias nesutapimą tarp modeliavimo metu gautų rezultatų bei realių (faktinių) energijos sąnaudų.…”

Section: įVadasunclassified

Assessment of Energy Performance Gap of an Office Building

Džiugaitė-Tumėnienė

Madeikis

2021

Science - Future of Lithuania

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The high share of global energy costs to create an indoor climate has been of increasing interest to the global community for several decades and is increasingly the focus of policy. This paper analyses the energy performance gap between actual energy consumption and energy demand obtained during the dynamic energy simulation and building certification. To identify the energy performance gap, an existing office of energy efficiency class B was selected as a case study. The simulation program IDA Indoor Climate and Energy was used to create a dynamic energy model, based on the designed documentation and the actual indoor climate parameters recorded by the building management system. The results of the case study showed that the accuracy and reliability of the results presented by the dynamic energy model of the building directly depend on the assumptions. The correct values of the internal heat gains, indoor climate parameters, human behavior, air quality levels at different times of the day and season, HVAC system operation parameters and operation modes, specific fan powers of ventilation systems, the seasonal energy efficiency of cooling equipment and characteristics of sun protection measures have to be selected.

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UK Passivhaus and the energy performance gap

Cited by 36 publications

References 15 publications

A critique on the UK’s net zero strategy

A critique on the UK’s net zero strategy

In-use energy and carbon performance of a true zero carbon housing development in England

Assessment of Energy Performance Gap of an Office Building

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