Supply security for domestic fuels at Finnish combined heat and power plants

Karhunen, A.; Laihanen, M.; Ranta, T.

doi:10.1016/j.biombioe.2015.03.019

Cited by 14 publications

(8 citation statements)

References 3 publications

(4 reference statements)

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“…Additionally, the use of a terminal can better secure fuel supplies to power plants by reducing the need for (expensive) supplementary fuel. A lack of wood fuel terminals was found to be one of the challenges for the supply security of wood fuel (Karhunen et al 2015). The findings moreover showed that machine utilisation of mobile chippers was low compared to earlier studies (Asikainen 1995, Spinelli & Visser 2009, Eliasson et al 2012, whereas the results in general were rather comparable to the findings of Windisch et al (2015).…”

Section: Discussionmentioning

confidence: 46%

Improving performance and energy efficiency of biomass supply through machine alteration and organisational redesign

Prinz¹

2019

Diss. For.

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This thesis summarises the findings of four case studies focussing on the redesign of specific aspects of the forest chip supply chain, the use of alternative terminals for chip supply, the interdependencies of chipper and chip trucks and the performance of individual machines after machine alteration. The aim of the work was to analyse and improve the fuel economy and energy efficiency of the forest chip supply system by modifying the settings of CTL harvesters, investigating the performance of an innovative hybrid chipper, introducing alternative supply systems through the use of a feed-in terminal and an analysis of forest chip supply systems under selected operational and environmental conditions. The analysis of the case studies involved individual machines and the entire forest chip supply system. Two study methods were used: work study and discrete event simulation (DES). Work study carried out to investigate the performance of individual machines and their alteration; the DES method was used for investigating the organisational redesign of the forest fuel supply system. The study resulted in the following findings and conclusions: 1) extreme machine settings have a statistically significant impact on the fuel economy of CTL harvesting machines; 2) hybrid machine technology can improve the fuel consumption and energy efficiency of chipping operations in forest chip production; nevertheless the productivity of the analysed prototype was below that for compared traditional chippers; 3) as an alternative to the direct supply of forest chips, the effect of utilising terminal operations on the overall supply cost can be quantified; terminal use improves the annual use of the supply fleet and enhances fuel supply security to the plant thereby reducing the need for supplementary fuel and 4) applying different types of types of chipper and truck-trailer combinations, supply costs and efficiencies can be quantified and vehicles with increased carrying capacity can improve the cost competitiveness. In the study an integrated approach taking physical, technological, enterprise and industrial levels of energy efficiency into account is proposed. Thereby state-of-the-art forest technology and current biomass supply ideally can be upgraded to achieve new, improved levels of performance and energy efficiency.

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Section: Discussionmentioning

confidence: 46%

Improving performance and energy efficiency of biomass supply through machine alteration and organisational redesign

Prinz¹

2019

Diss. For.

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“…However, peat fuel is a controversial energy source nationally because it has higher CO 2 emissions than coal, but it is an important domestic reserve fuel and a creator of domestic employment in rural areas. In the future, prolonged environmental impact assessments for peatland energy use and the vulnerability of older peatlands to rainfall could complicate domestic peat production [28]. It seems that peat fuel will be mainly used as a reserve fuel for CHP production in the future, but if regional investments on new combustion and boiler technology are made, the use of peat fuel could be completely replaced by wood fuels.…”

Section: Resultsmentioning

confidence: 99%

Implementation of National Renewable Energy Obligations at the Regional Level

Laihanen¹,

Karhunen²,

Ranta³

2019

JSBS

Self Cite

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The aim of the paper described here was to clarify the potential of decreasing the use of fossil fuels regionally. According to Finnish national obligations, the use of oil and other fossil fuels should be minimised by 2030. The study combines the regional consumption of primary energy sources with national obligations introduced in the national climate and energy strategy. This set up a basis when evaluating the regional state of future energy supply for 2030. The paper utilises the region of South Savo as a case study. In the region, the consumption of renewable energy sources is already above the national average, but it can be increased further by 2030. Wood fuels and especially forest biomass have regionally a major role. Local and national targets, support schemes and willingness to invest play key roles when increasing the use of renewable energy sources in the future.

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“…The effects of hybridization of products or technologies are also considered in Cluster 9. The trigeneration, i.e., combined cooling, heating, and power, can become an effective renovating option for a thermal power plant (Erdem et al, 2015) or CHP with biomass (Karhunen et al, 2015). The combination of renewables and fossil fuel can be applicable in a smart energy system such as a hybrid renewable ground source heat pump and natural gas fueled fuel cell in microgeneration systems serving residential and small office buildings .…”

Section: Resultsmentioning

confidence: 99%

Simulation-Based Approaches for Design of Smart Energy System: A Review Applying Bibliometric Analysis

Kikuchi

2017

J. Chem. Eng. Japan / JCEJ

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The design of energy systems has become an issue of worldwide interest. A single optimal energy system cannot be suggested because the availability of infrastructure and resources, and the acceptability of the system should be discussed locally with the involvement of all related stakeholders. A simulation-based approach is strongly needed for such a purpose. In this paper, the current major trends are reviewed on research activities related to smart energy systems. First, a bibliometric analysis of academic papers was conducted with the aim of visualizing clusters that indicate the hot topics attributable to smart energy systems. Considering the extracted research topics and representative references that are the core of each cluster, possible simulation-based approaches for the design of smart energy system are schematically structured on the basis of social, economic, and technological aspects. Through this study, the framework needed for the design of smart energy systems is characterized with simulation-based socioeconomic and technological analyses.

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Supply security for domestic fuels at Finnish combined heat and power plants

Cited by 14 publications

References 3 publications

Improving performance and energy efficiency of biomass supply through machine alteration and organisational redesign

Improving performance and energy efficiency of biomass supply through machine alteration and organisational redesign

Implementation of National Renewable Energy Obligations at the Regional Level

Simulation-Based Approaches for Design of Smart Energy System: A Review Applying Bibliometric Analysis

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