Zero-energy log house – Future concept for an energy efficient building in the Nordic conditions

Kosonen, Antti; Keskisaari, Anna

doi:10.1016/j.enbuild.2020.110449

Cited by 40 publications

(15 citation statements)

References 28 publications

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“…In this study, we controlled the variable of building envelope by some conditions in the selection of sample buildings; however, due to the large number of buildings, it was still difficult to ensure that the construction of individual buildings, such as the air tightness of buildings and the quality of the insulation installations, is exactly the same. These differences also had an impact on building energy performance [ 75 , 76 ], which might result in potential inaccuracies.…”

Section: Discussionmentioning

confidence: 99%

Impact of Urban Morphology and Climate on Heating Energy Consumption of Buildings in Severe Cold Regions

Song

Han³

et al. 2020

IJERPH

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This study aims to acquire a better understanding of the quantitative relationship between environmental impact factors and heating energy consumption of buildings in severe cold regions. We analyze the effects of five urban morphological parameters (building density, aspect ratio, building height, floor area ratio, and shape factor) and three climatic parameters (temperature, wind speed, and relative humidity) on the heating energy use intensity (EUI) of commercial and residential buildings in a severe cold region. We develop regression models using empirical data to quantitatively evaluate the impact of each parameter. A stepwise approach is used to ensure that all the independent variables are significant and to eliminate the effects of multicollinearity. Finally, a spatial cluster analysis is performed to identify the distribution characteristics of heating EUI. The results indicate that the building height, shape factor, temperature, and wind speed have a significant impact on heating EUI, and their effects vary with the type of building. The cluster analysis indicated that the areas in the north, east, and along the river exhibited high heating EUI. The findings obtained herein can be used to evaluate building energy efficiency for urban planners and heating companies and departments based on the surrounding environmental conditions.

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Section: Discussionmentioning

confidence: 99%

Impact of Urban Morphology and Climate on Heating Energy Consumption of Buildings in Severe Cold Regions

Song

Han³

et al. 2020

IJERPH

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“…Ever since, ZEHs have been constructed throughout the world and the number of completed ZEH projects is growing. The European Directive defines nearly-ZEHs as energy efficient buildings with very low-energy demands, which are able to cover energy consumption using local, renewable energy [ 16 , 17 ]. In Canada, net ZEH is defined as a home that only uses as much energy as it can produce from on-site renewable energy [ 14 ].…”

Section: Related Workmentioning

confidence: 99%

Operational Performance and Load Flexibility Analysis of Japanese Zero Energy House

Zhang

Gao

et al. 2021

IJERPH

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ZEHs (Zero Energy House) featuring energy-efficient designs and on-site renewable integration are being widely developed. This study introduced Japanese ZEHs with well-insulated thermal envelopes and investigated their detailed operational performances through on-site measurements and simulation models. Measurement data show that ZEHs effectively damped the variation of indoor air temperature compared to conventional houses, presenting great ability to retain inside heat energy, and are expected to potentially deliver energy flexibility as a virtual thermal energy storage medium. We developed a simplified thermal resistance–capacitance model for a house heating system; response behaviors were simulated under various scenarios. Results compared the variations of indoor temperature profiles and revealed the dependence of load flexibility on the building’s overall heat loss performance. We observed that overall heat loss rate played a crucial role in building heat energy storage efficiency; a well-insulated house shortened the heat-up time with less energy input, and extended the delayed period of indoor temperature under intermittent heating supply; a high set-point operative temperature and a low ambient temperature led to lower virtual thermal energy storage efficiency. The preheating strategy was simulated as an effective load-shifting approach in consuming surplus PV generation; approximately 50% of consumed PV generation could be shifted to replace grid import electricity for room heating during the occupied period.

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“…Despite the considerable experience in the construction and operation of wooden buildings in the USA, Canada and in the Scandinavian countries, foreign scientists continue to study various aspects of wooden buildings [1][2][3][4][5]. Various aspects of low-rise wooden housing construction are also being actively studied in Russia [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Monitoring of thermophysical properties of wooden buildings envelopes in climatic conditions of Murmansk and Petrozavodsk

et al. 2021

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The article presents a program of a planned scientific experiment on a comprehensive study of the energy efficiency of the enclosing structures of a wooden low-rise building. The main focus of the study is on the construction of the wooden walls. Experimental buildings implemented in two constructive and technological solutions in different climatic conditions (climatic regions of the Republic of Karelia and the Murmansk region) are considered as objects of research. The review of normative methods of field studies of thermophysical properties of enclosing structures is carried out. An experimental research method is proposed by means of a system for monitoring temperature and humidity parameters, developed and installed in the layers of heterogeneous structures. As a result, a program of an experiment for a comprehensive study in a stationary mode of the internal microclimate of a building was formed.

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Zero-energy log house – Future concept for an energy efficient building in the Nordic conditions

Cited by 40 publications

References 28 publications

Impact of Urban Morphology and Climate on Heating Energy Consumption of Buildings in Severe Cold Regions

Impact of Urban Morphology and Climate on Heating Energy Consumption of Buildings in Severe Cold Regions

Operational Performance and Load Flexibility Analysis of Japanese Zero Energy House

Monitoring of thermophysical properties of wooden buildings envelopes in climatic conditions of Murmansk and Petrozavodsk

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