Electrical savings by use of wood pellet stoves and solar heating systems in electrically heated single-family houses

Persson, Tomas; Nordlander, Svante; Rönnelid, Mats

doi:10.1016/j.enbuild.2004.10.013

Cited by 15 publications

(13 citation statements)

References 2 publications

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“…The overheating problem is directly linked to the stove nominal combustion power (P c,n ), to the stove thermal mass (that can store the heat delivered by the combustion before this energy is progressively released to the building zone), and to the power modulation capacity of the stove (that reflects the ability of a stove to adapt its combustion power as a function of the building needs). The influence of the stove control has been clearly shown in the simulations of Persson et al [5] using pellet stoves. It was proved that the power modulation is an important parameter to reduce the number of start/stop phases and, therefore, the emissions of pollutants.…”

Section: Stove Propertiesmentioning

confidence: 81%

On the proper integration of wood stoves in passive houses: Investigation using detailed dynamic simulations

Georges

Skreiberg

Novaković

2013

Energy and Buildings

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Wood stoves are attractive for the space-heating (SH) of passive houses. Nevertheless, there are still questions about their integration. Firstly, the power oversizing of the current stoves and their long operating time may lead to unacceptable overheating. Secondly, it is also unclear how one stove can ensure the thermal comfort in the entire building. The paper investigates these aspects using detailed dynamic simulations (TRNSYS) applied to a detached house in Belgium. An 8 kW stove is assumed to be representative of the lowest available powers in the market. Results confirm that a large power modulation is important to prevent overheating. Opening the internal doors, a high building thermal mass and a heat emission dominated by radiation also reduce the overheating risk, but to a smaller extent. Besides, a single stove cannot enforce the thermal comfort during design weather conditions: * Corresponding author

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Section: Stove Propertiesmentioning

confidence: 81%

On the proper integration of wood stoves in passive houses: Investigation using detailed dynamic simulations

Georges

Skreiberg

Novaković

2013

Energy and Buildings

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“…Both these effects are simulated in this study, and results are given for complete annual simulations with sub-hourly time step. Previous simulation work by Persson (2004) and Persson et al (2005) investigated the possibilities for replacing direct electric heating in single family houses with pellet stoves and solar heating systems for a variety of types of houses. Persson showed that modulating operation of the pellet stoves improves the thermal performance and decreases the CO-emissions.…”

Section: To Be Measured With 13vol-% O2mentioning

confidence: 99%

Carbon monoxide emissions of combined pellet and solar heating systems

Fiedler

Persson

2009

Applied Energy

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Emissions are an important aspect of a pellet heating system. Low harmful emissions, particularly carbon monoxide, are a measure of a well performing system. High carbon monoxide emissions are often caused by unnecessary cycling of the burner when the burner is operated below the lowest combustion power. Combining pellet heaters with a solar heating systems can significantly reduce cycling of the pellet heater and avoid the inefficient summer operation of the pellet heater. Five combined systems representing the range of typical solutions of this system type and one recently developed system have been studied, modelled and simulated. These systems are compared to a reference system which is based on a pellet boiler and is not combined with a solar heating system. The aim was to study CO-emissions of the different types of systems and to analyse the potential of CO-emission reduction when the pellet heater is combined with a solar heating systems. Another aim was to compare the yearly CO-emissions obtained from simulations under realistic dynamic conditions with the yearly CO-emissions calculated based on the values that are obtained by the standard test methods. The study was performed with the simulation tool TRNSYS. The parameter used in the study have been identified from lab measurements on existing pellet boilers/stoves and solar heating systems. The results from the simulations show that is possible to almost halve the CO-emission if the pellet heater is combined with a solar heating system. The results also show that the CO-emission of existing combined solar and pellet heating systems can be drastically reduced if the pellet heater is properly controlled and some basic design rules are observed. This can also be seen when analyzing the results for the new system concept where these rules have been taken into account. Comparing the yearly CO-emissions obtained from the simulations with the yearly CO-emissions calculated based on the standard test methods shows that using the latter give too low CO-values for the whole year. It is also shown that for the existing systems the average emissions under these realistic annual conditions were greater than the limit values of two Eco-labels.

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“…[17,18]). Nevertheless, the present work aims at investigating the limits of the integration of stoves using the standard approach where all the heat is directly released into the room.…”

Section: Introductionmentioning

confidence: 99%

On the proper integration of wood stoves in passive houses under cold climates

Georges

Skreiberg

Novaković

2014

Energy and Buildings

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The space-heating (SH) of residential buildings using a wood stove is an attractive solution. The way to properly integrate stoves in passive houses (PH) is still in question: current nominal powers are generally oversized compared to the PH needs (i.e. overheating risk) and it is not well understood how one stove can contribute to the SH of the entire building during a heating season. This question has already been addressed for the temperate climate of Belgium in a previous paper. The present work investigates cold climates also using a larger range of stove parameters. This is done using detailed dynamic simulations (TRNSYS) on a typical Norwegian single-family house typology.Using a large sensitivity analysis, recommendations to prevent overheating are given with a distinction between pellet and log stoves. Results also show that the overheating risk is somehow comparable between cold climates. On * Corresponding author

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Electrical savings by use of wood pellet stoves and solar heating systems in electrically heated single-family houses

Cited by 15 publications

References 2 publications

On the proper integration of wood stoves in passive houses: Investigation using detailed dynamic simulations

On the proper integration of wood stoves in passive houses: Investigation using detailed dynamic simulations

Carbon monoxide emissions of combined pellet and solar heating systems

On the proper integration of wood stoves in passive houses under cold climates

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