Effect of apartment building energy renovation on hourly power demand

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@article{748ed46528c14af0bb3e8ec108d35c06,
title = "Effect of apartment building energy renovation on hourly power demand",
abstract = "Optimal energy renovations of apartment buildings in Finland have a great impact on annual energy demand. However, reduction of energy demand does not necessarily translate into similar changes in peak power demand. Four different types of apartment buildings, representing the Finnish apartment building stock, were examined after optimal energy retrofits to see the influence of retrofitting on hourly power demand. Switching from district heating to ground-source heat pumps reduced emissions significantly under current energy mix. However, the use of ground-source heat pumps increased hourly peak electricity demand by 46–153{\%}, compared to district heated apartment buildings. The corresponding increase in electrical energy demand was 30–108{\%} in the peak month of January. This could increase the use of high emission peak power plants and negate some of the emission benefits. Solar thermal collectors and heat recovery systems could reduce purchased heating energy to zero in summer. Solar electricity could reduce median power demand in summer, but had only a little effect on peak power demand. The reduction in peak power demand after energy retrofits was less than the reduction in energy demand.",
keywords = "apartment building, district heating, energy performance, Energy retrofits, greenhouse gas emissions, power demand",
author = "Janne Hirvonen and Juha Jokisalo and Juhani Heljo and Risto Kosonen",
year = "2019",
month = "5",
day = "9",
doi = "10.1080/14786451.2019.1613992",
language = "English",
journal = "International Journal of Sustainable Energy",
issn = "1478-6451",

}

RIS - Lataa

TY - JOUR

T1 - Effect of apartment building energy renovation on hourly power demand

AU - Hirvonen, Janne

AU - Jokisalo, Juha

AU - Heljo, Juhani

AU - Kosonen, Risto

PY - 2019/5/9

Y1 - 2019/5/9

N2 - Optimal energy renovations of apartment buildings in Finland have a great impact on annual energy demand. However, reduction of energy demand does not necessarily translate into similar changes in peak power demand. Four different types of apartment buildings, representing the Finnish apartment building stock, were examined after optimal energy retrofits to see the influence of retrofitting on hourly power demand. Switching from district heating to ground-source heat pumps reduced emissions significantly under current energy mix. However, the use of ground-source heat pumps increased hourly peak electricity demand by 46–153%, compared to district heated apartment buildings. The corresponding increase in electrical energy demand was 30–108% in the peak month of January. This could increase the use of high emission peak power plants and negate some of the emission benefits. Solar thermal collectors and heat recovery systems could reduce purchased heating energy to zero in summer. Solar electricity could reduce median power demand in summer, but had only a little effect on peak power demand. The reduction in peak power demand after energy retrofits was less than the reduction in energy demand.

AB - Optimal energy renovations of apartment buildings in Finland have a great impact on annual energy demand. However, reduction of energy demand does not necessarily translate into similar changes in peak power demand. Four different types of apartment buildings, representing the Finnish apartment building stock, were examined after optimal energy retrofits to see the influence of retrofitting on hourly power demand. Switching from district heating to ground-source heat pumps reduced emissions significantly under current energy mix. However, the use of ground-source heat pumps increased hourly peak electricity demand by 46–153%, compared to district heated apartment buildings. The corresponding increase in electrical energy demand was 30–108% in the peak month of January. This could increase the use of high emission peak power plants and negate some of the emission benefits. Solar thermal collectors and heat recovery systems could reduce purchased heating energy to zero in summer. Solar electricity could reduce median power demand in summer, but had only a little effect on peak power demand. The reduction in peak power demand after energy retrofits was less than the reduction in energy demand.

KW - apartment building

KW - district heating

KW - energy performance

KW - Energy retrofits

KW - greenhouse gas emissions

KW - power demand

UR - http://www.scopus.com/inward/record.url?scp=85065643393&partnerID=8YFLogxK

U2 - 10.1080/14786451.2019.1613992

DO - 10.1080/14786451.2019.1613992

M3 - Article

JO - International Journal of Sustainable Energy

JF - International Journal of Sustainable Energy

SN - 1478-6451

ER -

ID: 34093293