Lukasz Niedzwiecki – författare

Seminar paper from the year 2011 in the subject Energy Sciences, grade: 4.5, Linnaeus University, course: Assessment of biomass for energy, language: English, abstract: Paper presents biomass resources available in Jawor county and Lower Silesia Region for energy purposes. Amount of resoure available for each type of resource is assessed. Usefull energy requirements for Jawor county are assessed. Fesible technologies for energy conversion are named. Technologies suitable in author's opinion are recommended.

Bachelor Thesis from the year 2011 in the subject Engineering - Power Engineering, grade: 1,5, Linnaeus University (Bioenergy technology), language: English, abstract: This paper aims to derive qualitative model for energy requirements for wood chipping process. There is relationship shown between energy requirements and properties of biomass, which is quite variable material. Relationship between comminution machineryand energy necessary for the process is highlighted. Derivation of the model is focused on chipping but in general it s possible, to make it available both for different types of biomass (f. ex. agricultural residues) or for different type of comminution machinery (f. ex. hammermills) just by using different material properties adjusted to machinery mechanics. Properties used in derivation are mend to be easy to measure. Model is ment to be used as a base for quantitative model that, thanks to measurementsperformed on real comminution machinery and using wood with known properties, could give answers for two important questions:- Would hypothetical changes in desired size of output material increase total system efficiency, taking into consideration lowest efficiency of combustion process (i. ex. higher amounts of unburned fuel)?- How to optimise comminution as an operation in biofuel supply chain, with respect to energy used for the process?

Seminar paper from the year 2011 in the subject Economy - Environment economics, grade: 5.0, Linnaeus University, course: Unit operations in bioenergy systems, language: English, abstract: The paper assessess woody biomass resources available near Bielawa. Two scenarios for a fuel supply chain are analysed. Supply with logging residue is compared to hypothetical SRC plantation (Salix).