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Energy Performance, LCC and LCA Analysis of Renovation of Residential Buildings

Wang, Han LU (2021) AEBM01 20211
Energy and Building Design
Department of Architecture and Built Environment
Abstract
This study conducted an evaluation of the energy performance of a building complex located in Lund. Since the complex has a great need for renovation, five renovation measures were proposed. In order to improve thermal insulation and airtightness of the external walls, replacing the old double-glazed windows with more insulated triple-glazed windows, mounting Smart1 to replace part of the ventilation airflow provided by the exhaust ventilation system, replace district heating by ground source heat pumps to supply heating demand of the complex, and install photovoltaic panels on the roofs.
The energy demands of the buildings with the renovation measures were calculated by computer simulations. The costs of these renovation measures over 35... (More)
This study conducted an evaluation of the energy performance of a building complex located in Lund. Since the complex has a great need for renovation, five renovation measures were proposed. In order to improve thermal insulation and airtightness of the external walls, replacing the old double-glazed windows with more insulated triple-glazed windows, mounting Smart1 to replace part of the ventilation airflow provided by the exhaust ventilation system, replace district heating by ground source heat pumps to supply heating demand of the complex, and install photovoltaic panels on the roofs.
The energy demands of the buildings with the renovation measures were calculated by computer simulations. The costs of these renovation measures over 35 years were calculated using a database from Wikells. By using environmental product declarations from manufacturers on products involved in renovations, the global warming potential of each renovation measure was estimated over a period of 35-years. Finally, the most efficient scenarios in terms of energy and cost, global warming potential and cost were found through Pareto efficiency analysis.
In terms of primary energy saving, ground source heat pump, Smart1, and photovoltaic panels are Pareto efficient measures. In the external wall renovation, 120 mm additional insulation had the lowest life cycle cost. Replacing windows reduced primary energy use but increased life cycle cost. These two measures are optional measures that can be considered according to the renovation budget.
When it comes to global warming potential (GWP), Smart1 and photovoltaics are the most Pareto efficient measures. However, external wall renovation led to an increase in global warming potential over the 35-year period studied. Ground source heat pumps led to a decrease of GWP when windows are also replaced. (Less)
Popular Abstract
This study looked into three residential buildings locates in Lund, Sweden. Five different renovation measures concerning insulation, window, ventilation, heat source and solar energy are studied from energy saving, costs, and environment protection.
Please use this url to cite or link to this publication:
author
Wang, Han LU
supervisor
organization
alternative title
A case study from Klostergården in Lund, Sweden
course
AEBM01 20211
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Building energy demand, building renovation, insulation, windows, ventilation, heat pump, photovoltaic, cost, global warming potential
language
English
id
9057310
date added to LUP
2021-06-28 10:30:59
date last changed
2021-06-28 10:30:59
@misc{9057310,
  abstract     = {{This study conducted an evaluation of the energy performance of a building complex located in Lund. Since the complex has a great need for renovation, five renovation measures were proposed. In order to improve thermal insulation and airtightness of the external walls, replacing the old double-glazed windows with more insulated triple-glazed windows, mounting Smart1 to replace part of the ventilation airflow provided by the exhaust ventilation system, replace district heating by ground source heat pumps to supply heating demand of the complex, and install photovoltaic panels on the roofs.
The energy demands of the buildings with the renovation measures were calculated by computer simulations. The costs of these renovation measures over 35 years were calculated using a database from Wikells. By using environmental product declarations from manufacturers on products involved in renovations, the global warming potential of each renovation measure was estimated over a period of 35-years. Finally, the most efficient scenarios in terms of energy and cost, global warming potential and cost were found through Pareto efficiency analysis.
In terms of primary energy saving, ground source heat pump, Smart1, and photovoltaic panels are Pareto efficient measures. In the external wall renovation, 120 mm additional insulation had the lowest life cycle cost. Replacing windows reduced primary energy use but increased life cycle cost. These two measures are optional measures that can be considered according to the renovation budget.
When it comes to global warming potential (GWP), Smart1 and photovoltaics are the most Pareto efficient measures. However, external wall renovation led to an increase in global warming potential over the 35-year period studied. Ground source heat pumps led to a decrease of GWP when windows are also replaced.}},
  author       = {{Wang, Han}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Energy Performance, LCC and LCA Analysis of Renovation of Residential Buildings}},
  year         = {{2021}},
}