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Renovation towards residential Net -Zero Energy Buildings using Photovoltaics and Batteries

Jäger, Franz-Xaver LU (2021) AEBM01 20211
Energy and Building Design
Department of Architecture and Built Environment
Abstract
A large share of the existing building stock in Sweden originates from the so-called Million Building Programme, a large-scale construction wave between 1965 and 1974 to tackle the housing shortage at this time. Those buildings have very high energy demand and require renovation due to age and often neglected maintenance. The Swedish government’s long-term climate and energy goals are tied to an energy-efficient renovation of those buildings. This thesis aimed to investigate the cost-effectiveness of various energy-efficiency measures combined with solar energy production to reach a Net-Zero energy building based on a primary energy balance. The on-site energy was generated by a photovoltaic system. One representative multi-family building... (More)
A large share of the existing building stock in Sweden originates from the so-called Million Building Programme, a large-scale construction wave between 1965 and 1974 to tackle the housing shortage at this time. Those buildings have very high energy demand and require renovation due to age and often neglected maintenance. The Swedish government’s long-term climate and energy goals are tied to an energy-efficient renovation of those buildings. This thesis aimed to investigate the cost-effectiveness of various energy-efficiency measures combined with solar energy production to reach a Net-Zero energy building based on a primary energy balance. The on-site energy was generated by a photovoltaic system. One representative multi-family building and one single-family house were investigated. This study included photovoltaic simulations in System Advisor Model, energy performance simulations in IDA/ICE, and investment cost estimations based on Wikells Sektionsdata. The economic profitability was evaluated by determining the life cycle profitability involving a sensitivity analysis. The results of the multi-family building showed that it is not cost-effective to renovate towards Net-Zero energy building and this can only be achieved with extensive renovations including a new ventilation system with heat recovery. The available roof area for PV integration is the limiting factor to reach Net-Zero energy building for less extensive renovation cases. The renovation cases of the single-family house, including only passive measures, were all economically profitable. The most economical solution was to only install a photovoltaic system without any renovation. The cost analysis of photovoltaic systems showed that battery systems are becoming economically competitive with photovoltaic system solutions without a battery system. Generally, the economic profitability of a photovoltaic system is influenced by the policy and subsidies in force. (Less)
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author
Jäger, Franz-Xaver LU
supervisor
organization
course
AEBM01 20211
year
type
H2 - Master's Degree (Two Years)
subject
keywords
building stock, photovoltaic system, Net-Zero energy building, battery systen, renovation
language
English
id
9057209
date added to LUP
2021-06-28 10:26:01
date last changed
2021-06-28 10:26:01
@misc{9057209,
  abstract     = {{A large share of the existing building stock in Sweden originates from the so-called Million Building Programme, a large-scale construction wave between 1965 and 1974 to tackle the housing shortage at this time. Those buildings have very high energy demand and require renovation due to age and often neglected maintenance. The Swedish government’s long-term climate and energy goals are tied to an energy-efficient renovation of those buildings. This thesis aimed to investigate the cost-effectiveness of various energy-efficiency measures combined with solar energy production to reach a Net-Zero energy building based on a primary energy balance. The on-site energy was generated by a photovoltaic system. One representative multi-family building and one single-family house were investigated. This study included photovoltaic simulations in System Advisor Model, energy performance simulations in IDA/ICE, and investment cost estimations based on Wikells Sektionsdata. The economic profitability was evaluated by determining the life cycle profitability involving a sensitivity analysis. The results of the multi-family building showed that it is not cost-effective to renovate towards Net-Zero energy building and this can only be achieved with extensive renovations including a new ventilation system with heat recovery. The available roof area for PV integration is the limiting factor to reach Net-Zero energy building for less extensive renovation cases. The renovation cases of the single-family house, including only passive measures, were all economically profitable. The most economical solution was to only install a photovoltaic system without any renovation. The cost analysis of photovoltaic systems showed that battery systems are becoming economically competitive with photovoltaic system solutions without a battery system. Generally, the economic profitability of a photovoltaic system is influenced by the policy and subsidies in force.}},
  author       = {{Jäger, Franz-Xaver}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Renovation towards residential Net -Zero Energy Buildings using Photovoltaics and Batteries}},
  year         = {{2021}},
}