On-site monitoring and dynamic simulation of a low energy house heated by a pellet boiler

Carlon, Elisa; Schwarz, Markus; Prada, Alessandro; Golicza, Laszlo; Verma, Vijay; Baratieri, Marco; Gasparella, Andrea; Haslinger, Walter; Schmidl, Christoph

doi:10.1016/j.enbuild.2016.01.001

Cited by 20 publications

(7 citation statements)

References 25 publications

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“…The annual efficiency for a standard house from 2004, understood as the heat quotient produced by the boiler and energy feed to the boiler in the fuel, was 83%, when the efficiency during the standard testing conditions in nominal capacity was 93,2%. For the part load (in modulating capacity mode), it was 90.9% [27].…”

Section: Availability and Prevalence Of Biomass Fuelmentioning

confidence: 99%

An Assessment of the Efficiency and Emissions of a Pellet Boiler Combusting Multiple Pellet Types

et al. 2021

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With sustainable energy being the key to reaching climate neutrality, the utilization of non-wooden biomass is a necessity. This article compares the emissions and efficiency of combusting a number of types of agrobiomass and wood pellets. A comparison was made on a moving grate pellet burner mounted in a boiler, where flue gas had a vertical flow via two pass heat exchangers with turbulization elements. Tests were conducted on wood pellets (ENPlus), miscanthus straw pellets, sunflower husk pellets, and corn stover pellets. During combustion, both wood and miscanthus pellets met the PN-EN 303-5:2012 emission and efficiency requirements. Corn stover pellets met the requirement on the nominal capacity. Sunflower husk pellets are characterized by excessive CO and particulate matter emissions. Sunflower husk pellets were the most problematic fuel from the point of view of the results of this research. During combustion of the miscanthus straw pellets there was a need to decrease the nominal heating capacity due to ash sintering.

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Section: Availability and Prevalence Of Biomass Fuelmentioning

confidence: 99%

An Assessment of the Efficiency and Emissions of a Pellet Boiler Combusting Multiple Pellet Types

et al. 2021

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“…Nevertheless, a recent revision of Directive 2009/28/EC (Renewable Energy Directive) encourages woody biomass use as a possible solution to reach the 32% renewable share target by 2030 (European Parliament and Council 2018). As reported by the European Bioenergy Outlook 2020 (Calderón et al 2020), only 23% of the household energy consumption excluding electricity is covered by the share of renewables in 2018, most of which is bioenergy (Carlon et al 2016). In the Italian context, a technological turnover has influenced the traditional wood-fired devices, whereas pellet devices have grown steadily from 8% to 22% between 2010 and 2018 (Francescato and Rossi 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Recent papers focused on the potential benefits of a mechanical ventilation system coupled with biomass stoves in passive houses (Feist et al 2005;Georges and Novakovic 2012;Schumack 2016;Carlon et al 2016). In contrast, the present work deals with conventional heating systems, i.e.…”

Section: Introductionmentioning

confidence: 99%

Energy analysis of a wood or pellet stove in a single-family house equipped with gas boiler and radiators

et al. 2022

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In the residential sector, biomass appliances are widely used for space heating and often combined with other systems. This work aims at comparing the final and primary energy consumption of different configurations, including a conventional and a ducted pellet stove and a wood log stove using air as heat transfer fluid. A dynamic analysis of the interaction between biomass stoves and conventional heating systems, such as gas boilers and radiators, is carried out within a typical single-family house in a mild climate, using TRNSYS software. In addition, natural ventilation of the building is considered using CONTAM, with a focus on external infiltrations and internal air circulation due to the buoyancy effect. Results show that the biomass device in one room promotes the airflows between adjacent thermal zones, enhancing the heat distribution through door openings, in particular when an air ducted stove is present. The final energy consumption resulting from simulations with wood-burning stoves is 21% higher than pellet stoves. The pellet stove results in similar final energy and a 30% increase in overall primary energy, while the wood stove increases the final energy by 22% and approximately 40% of overall primary energy compared to the case of a traditional gas system coupled to radiators which is considered as reference. Nevertheless, non-renewable primary energy savings are higher than 50% with pellet stoves and 60% with wood-log stoves.

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“…Starting from monitored real data, it is in general fundamental to detect malfunctions, to improve the control of the systems and to optimize the overall building performance, energy use and indoor comfort conditions. In this regard, Carlon et al [9] started from a one-year monitoring campaign of a building and evidenced the importance of a better management of the thermal inertia of the heating system; then, these authors tested improved control strategies by means of suitable simulations.…”

Section: Introduction and Literature State Of The Artmentioning

confidence: 99%

Evaluation and optimization of the performance of the heating system in a nZEB educational building by monitoring and simulation

Borrelli

Merema

Ascione

et al. 2021

Energy and Buildings

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The optimal control of the HVAC system in the nearly zero energy buildings (nZEBs) can be considered as a challenge.Indeed, the lack of data given by monitored data does not allow understanding what are the implications of different strategies on thermal comfort and energy consumptions. This paper determines an approach for the evaluation of the management of the heating system in an existing educational nZEB. The aim is to understand how the energy efficiency of the heating system is sensitive to controls strategies and the important role played by the control systems. The test lecture rooms on KU Leuven Ghent Technology Campus (Belgium) have been chosen as case study.A deep analysis, starting from an in-field monitoring, was carried out during the winter period of 2019, in order to assess the actual operation and the energy use of building systems under real conditions. Then, a building energy simulation (BES) model of the building and its systems was developed and calibrated against the real monitoring data. Control strategies of the heating system are simulated and compared to the current configuration. The simulation results show that strategies based on a definition of a heating curve for the boiler can reduce the comfortable time (-23%). Controlling the temperature inside the storage tank as a function of the outdoor temperature together with the control on the activation of the air handling unit result in an energy savings from 32% to 46%, with a correspondent increase of comfort time in the period from 0.6% to 3.4% compared to the baseline scenario, depending to the relationship between the external temperature and water temperature inside the water storage tank.

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On-site monitoring and dynamic simulation of a low energy house heated by a pellet boiler

Cited by 20 publications

References 25 publications

An Assessment of the Efficiency and Emissions of a Pellet Boiler Combusting Multiple Pellet Types

An Assessment of the Efficiency and Emissions of a Pellet Boiler Combusting Multiple Pellet Types

Energy analysis of a wood or pellet stove in a single-family house equipped with gas boiler and radiators

Evaluation and optimization of the performance of the heating system in a nZEB educational building by monitoring and simulation

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