Search Results

1 - 5 of 5 items

  • Author: Dariusz Kwaśniewski x
Clear All Modify Search
Logistic and Economical Preconditions for Production of Pellets From Sawdust

Abstract

The objective of the paper was to determine the costs of production and production effectiveness of pellets made of sawdust and characteristics of logistics of raw material carriage and distribution of pellets. The scope of the paper covered the research carried out in the branch of DREWEX company located in Chotelek town (Świętokrzyskie voivodeship, Province of Busko Zdrój). Unit costs of pellets production were: 513.4 PLN∙t−1 for option 1, 423.3 PLN∙t−1 for option 2 and 393.3 PLN∙t−1 for option 3. The most favourable was option 3 when the pellets were produced on the technology line in the 3-shift system day and night. The average distance to seven cities from which sawdust was delivered was 43.6 km and the distance to which production was distributed to ten cities was on average 105.5 km.

Open access
Economic Effectiveness of Straw Pellets Production

Abstract

The objective of the paper was to present straw pellets production technology and to determine their production costs. The paper presents also the cost structure and economic effectiveness of pellets production. Tests were carried out in EKO-BIOMASA company which produces pellets. It is located in Biechów in Świętokrzyskie Voivodeship. Unit costs of pellets production were: 310.20 PLN ∙ t-1 for option 1, 285.40 PLN ∙ t-1 for option 2 and 278.90 PLN ∙ t-1 for option 3. The most favourable was option 3 when the pellet production was carried out on the technology line in the 3-shift system day and night. In all three variants of pellet production, the highest costs were in case of electric energy. Its participation in the cost structure in relation to the option was within 42% (option 3) and 38% (option 1). The obtained indicator of economic effectiveness for all the investigated options was higher than one.

Open access
Work Inputs and Costs of Eradication of Energy Willow Plantation

Abstract

The objective of the paper was to determine the work expenditures and costs of eradication of an energy willow plantation with currently applied mechanical methods and with the use of the test model of a machine for cutting willow rootstocks as a part of the scientific project no. PBS2/A8/26/2014. The scope of the paper covered research for four machine units constructed for a twelve-year willow plantation with the surface area of 3 ha. Work inputs for eradication of the plantation of the investigated aggregates were within 8.1 to 50.4 mhr ∙ ha-1. Work inputs with the new machine were 22.3 mhr ∙ ha-1. The level of work inputs was influenced by low working speeds of the tractor-machine unit and working speeds from 0.4 to 2.3 m. Costs of willow plantation eradication with current mechanical methods were from 4302 to 15536 PLN ∙ ha-1, and with the use of the new machine it was 5457 PLN ∙ ha-1.

Open access
Fuel Consumption and Effectiveness of Elimination of Energy-crop Willow Plantation

Abstract

The objective of the paper was to determine fuel consumption on elimination of the energy willow plantation with current mechanical methods with the use of the machine research model. The paper covers investigations of four machine units. The lowest fuel consumption (142.6 l∙ha−1) with the use of Meri Crusher MJS-2.0) did not ensure effectiveness of operation of this unit. Efficiency of elimination of the plantation in this case is only 36.4%. On the other hand, the highest consumption of diesel oil (776.4 l∙ha−1) was reported for FAO FAR model FV 4088, and the effectiveness of elimination was not satisfactory and it was 57.0%. The highest effectiveness of elimination of the plantation was reported for the model of a new machine. Fuel consumption in this case was 535.7 l∙ha−1 and the willow plantation elimination effectiveness was the highest and it amounted to 94.8%.

Open access
Production Capacity and Workstations Load in the Animal Feed Production Process

Abstract

Production capacity is the amount of production with the determined assortment structure possible to achieve by a particular production unit in a determined time at the optimal use of production factors and at maintaining the products quality corresponding to standards. The objective of the paper was to determine the production power and output of particular workstations which constitute an assembly line of dry animal feed. The scope of research covered an assembly line in the establishment which produces dry feed for pet animals. Based on information and documentation obtained from the company manager and on the work schedule determined for particular workstations, the operation time of a machine, human work time (operation of a machine) and operation time of the entire station with its working surface was determined. Research showed that workstations which constituted the assembly line of dry animal feed were loaded within 76 to 86%. The lowest loading was reported in the mill and LP02 assembly line and it was respectively 76 and 78%. Whereas loading of the remaining devices was comparable and was at the level within 84 to 86%.

Open access