Tina Lidberg | Dalarna University (original) (raw)

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Papers by Tina Lidberg

Energy Procedia, 2017

This study analyses the differences in primary energy (PE) use of a multi-family building refurbi... more This study analyses the differences in primary energy (PE) use of a multi-family building refurbished with different refurbishment packages situated in different district heating systems (DHS). Fou ...

Energy, 2016

The energy efficiency of the European building stock needs to be increased in order to fulfill th... more The energy efficiency of the European building stock needs to be increased in order to fulfill the climate goals of the European Union. To be able to evaluate the impact of energy efficient refurbi ...

Fuel pellets are a refined bio fuel mostly consisting of residues from sawmills and wood industry... more Fuel pellets are a refined bio fuel mostly consisting of residues from sawmills and wood industry. At Rindi Vasterdala AB's combined bio energy plant in Vansbro fuel pellets are produced, while the ...

This work focuses on how implementation of wellknown refurbishment strategies, applied on multifa... more This work focuses on how implementation of wellknown refurbishment strategies, applied on multifamily buildings in a post-war housing complex in Sweden can affect the generation of district heating ...

The refurbishment of existing buildings is often considered a way to reduce energy use and CO2 em... more The refurbishment of existing buildings is often considered a way to reduce energy use and CO2 emissions in the building stock. This study analyses the primary energy and CO2 impact of refurbishing ...

Improving energy performance of existing buildings is an important part in decreasing energy use ... more Improving energy performance of existing buildings is an important part in decreasing energy use and in turn reduce the greenhouse gas emissions caused by human activity and the primary energy use. ...

WEENTECH Proceedings in Energy

Lowering temperature levels of a district heating (DH) system may offer several advantages such a... more Lowering temperature levels of a district heating (DH) system may offer several advantages such as reduced distribution losses, increased efficiency of flue gas condensation equipment and increased electricity generation in combined heat and power plants. In a broader perspective this can result in more efficient use of natural resources as well as reduced climate-impacting emissions. This study examines how decreased DH supply temperatures influence the power-to-heat ratio and thereby electricity production and fuel use in a combined heat and power plant. Carbon dioxide equivalent (CO2-eqv.) emissions and primary energy use were calculated with three different marginal electricity perspectives. A regional DH system situated in mid-Sweden was used as a case study and the energy system cost optimization modelling tool MODEST (Model for Optimization of Dynamic Energy Systems with Time-Dependent Components and Boundary Conditions) was used. The results show that decreasing the DH suppl...

Energies

When buildings become more energy effective, the temperature levels of district heating systems n... more When buildings become more energy effective, the temperature levels of district heating systems need to be lower to decrease the losses from the distribution system and to keep district heating a competitive alternative on the heating market. For this reason, buildings that are refurbished need to be adapted to suit low-temperature district heating. The aim of this paper is to examine whether four different energy refurbishment packages (ERPs) can be used for lowering the temperature need of a multi-family buildings space heating and domestic hot water (DHW) system as well as to analyse the impact of the DHW circulation system on the return temperature. The results show that for all ERPs examined in this study, the space heating supply temperature agreed well with the temperature levels of a low-temperature district heating system. The results show that the temperature need of the DHW system will determine the supply temperature of the district heating system. In addition, the amoun...

Resultatet visade att samtliga testade råvarublandningar gav godkänd pelletskvalitet med undantag... more Resultatet visade att samtliga testade råvarublandningar gav godkänd pelletskvalitet med undantag från några enskilda avvikande prover.

This work focuses on how implementation of well-known refurbishment strategies, applied on multif... more This work focuses on how implementation of well-known refurbishment strategies, applied on multifamily buildings in a post-war housing complex in Sweden can affect the generation of district heating. Both the energy use and the power load were considered. The study was performed in Borlänge municipality, Sweden, where the municipality owns both the energy and the housing companies. The strategies for energy efficiency were simulated with IDA-ICE for the Tjärna Ängar area, a housing complex built between 1969-1971, with access to documented information about the buildings and energy audit. The results of the building simulation were implemented in a simplified model of the local district heating system. The results indicate how different renovation strategies affect the demand of energy and power load within the district heating system and can be used to provide indicators for different scenarios. The larger goal of the research is how to maximize the economic and environmental effic...