Zero energy level and economic potential of small-scale building-integrated PV with different heating systems in Nordic conditions

Hirvonen, Janne; Kayo, Genku; Hasan, Ala; Sirén, Kai

doi:10.1016/j.apenergy.2015.12.037

Cited by 60 publications

(21 citation statements)

References 18 publications

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“…For example, solar electricity combined with borehole thermal energy storage for Finnish conditions was examined in [40]. Typically, demand response and short-term thermal energy storage in water tanks is also useful for increasing the value of solar electricity [41,42], but in the retrofit cases of the current study, solar thermal collectors were also included and handled most of the heating demand in summer. District heating could be produced with heat pumps [43].…”

Section: Discussionmentioning

confidence: 99%

The Effect of Deep Energy Retrofit on The Hourly Power Demand of Finnish Detached Houses

2020

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This study examines how the energy renovation of old detached houses affects the hourly power consumption of heating and electricity in Finland. As electrification of heating through heat pumps becomes more common, the effects on the grid need to be quantified. Increased fluctuation and peak power demand could increase the need for fossil-based peaking power plants or call for new investments to the distribution infrastructure. The novelty in this study is the focus on hourly power demand instead of just annual energy consumption. Identifying the influence of building energy retrofits on the instantaneous power demand can help guide policy and investments into building retrofits and related technology. The work was done through dynamic building simulation and utilized building configurations obtained through multi-objective optimization. Deep energy retrofits decreased both the total and peak heating power consumption. However, the use of air-source heat pumps increased the peak power demand of electricity in district heated and wood heated buildings by as much as 100%. On the other hand, peak power demand in buildings with direct electric heating was reduced by 30 to 40%. On the building stock level, the demand reduction in buildings with direct electric heating could compensate for the increase in the share of buildings with ground-source heat pumps, so that the national peak electricity demand would not increase. This prevents the increase of demand for high emission peaking power plants as heat pump penetration rises. However, a use is needed for the excess solar electricity generated by the optimally retrofitted buildings, because much of the solar electricity cannot be utilized in the single-family houses during summer.

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Section: Discussionmentioning

confidence: 99%

The Effect of Deep Energy Retrofit on The Hourly Power Demand of Finnish Detached Houses

2020

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“…The economic parameters used in the optimization model are listed in Table 1. The replacement costs are mainly for the inverter, assumed to be replaced every 10 years, and are equal to 450 US$/kW for residential systems and 250 US$/kW for larger scale systems [26].…”

Section: Optimization Modelmentioning

confidence: 99%

Optimization of a residential district with special consideration on energy and water reliability

et al. 2017

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Many cities around the world have reached a critical situation when it comes to energy and water supply, threatening the urban sustainable development. From an engineering and architecture perspective it is mandatory to design cities taking into account energy and water 1 The short version of the paper was presented at CUE2015 on Nov. 15-17, Fuzhou, China. This paper is a substantial extension of the short version with original paper title, "Spatial optimization of residential urban district-Energy and water perspectives" and Paper No. 167.

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“…Exterior surfaces of the building are considered in two variants with different heat transfer coefficients U, see Table 1. In order to show a more illustrative evaluation of the given issue, the building is equipped with an air handling unit system (AHU) with general effectiveness of 75% (Kulhánek 2010;Hirvonen et al 2016).…”

Section: Building Descriptionmentioning

confidence: 99%

Selection of Heating System Based on Acquisition and Operating Costs for Family Houses

Novotný

Šuhajda

Kucera

et al. 2016

9th International Scientific Conference “Business and Management 2016”

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The aim of this study is to evaluate mutual dependences and significance of the input factors of a heating system for a family house. The input factors which are being most commonly considered are operating costs, acquisition prices on financial return rate, life span of these systems or requirements for maintenance and control. This research is focused on the analysis of three different heating systems in the common detached house; electric heating foils, heat pump and gas boiler. The building itself is evaluated in three variants; with and without a ventilation unit and with adjusted structure composition. To analyse the parameters mentioned above the Promethee method (multicriterial analysis) has been used.

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Zero energy level and economic potential of small-scale building-integrated PV with different heating systems in Nordic conditions

Cited by 60 publications

References 18 publications

The Effect of Deep Energy Retrofit on The Hourly Power Demand of Finnish Detached Houses

The Effect of Deep Energy Retrofit on The Hourly Power Demand of Finnish Detached Houses

Optimization of a residential district with special consideration on energy and water reliability

Selection of Heating System Based on Acquisition and Operating Costs for Family Houses

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