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A comparative study was carried out of emissions from the catalytic combustion of pellets made from furniture board waste and pellets made from wood mixed with Fe

This paper presents the research results of the effect of using calcium oxide and potassium permanganate on the combustion of pellets from wheat bran and beet pulp. The measurements were performed in the technical laboratory of the Centre of Energy Utilization of Non-Traditional Energy Sources in Ostrava. The research examined the effect of the use of chemical substances on the amount of air pollutants from biomass thermal conversion in a low-power boiler and the process temperature. First, we performed technical and elementary analyses of agricultural waste. The raw material was then comminuted, mixed with a selected additive, pelletized, and finally burned in a low-power boiler. The additive was added in three proportions: 1:20, 1:10, and 1:6.67 (i.e., 15%) relative to the fuel weight. The combustion process efficiency was measured using a flue gas analyzer and three thermocouples attached to the data recorder. From the measurement results, we were able to determine the percentage reduction of pollutant emissions into the atmosphere (CO, NO

Research was carried out into the impact of the content of wheat flour in a mixture with chopped wheat straw and the humidity of this material on the hardness of the pellet obtained from this raw material. The maximum content of wheat flour was 9.6% of the dry matter of the raw material, and the humidity of the raw material was 11.6, 25.7 and 36.0%. An increase of wheat flour content in the whole range examined considerably increased the pellet hardness, while an increase of humidity content in the raw material had an impact on increased hardness up to 25.7% only.

The article presents an overview of truck models with electric drive. The main advantages of these vehicles are the low level of noise emitted and the lack of exhaust gas emissions as well as less failure of the drive units. The limitation is a short travel distance on one battery charge and a long battery charging time.

The article discusses the basic conditions for transport-ing long-wood timber and equipping sets for transporting timber logs. An overview of the structural solutions of trailers and stanchions used by major manufacturers on the European market is presented. The main directions of development of road timber transport is to reduce the own weight of means of transport through the use of lighter construction materials and increase the possibility of carrying various types of cargo by adjusting the trailer elements.

Research was carried out concerning spraying young cherry trees with a multirotor drone: a hexacopter. The aim of the study was to evaluate the impact of the following: the nozzle type, the air stream from the drone rotors and the size of spacing between the trees on the distribution of the liquid sprayed in the crown of the trees being sprayed. Experimental trials were conducted on a laboratory test stand. Air-injector spray nozzles: single and a twin flat were used interchangeably to spray the liquid. The travelling speed of the drone was 1.0 m∙s−1. A drone of 106.7 N weight was accepted in the study. The value of the spray liquid deposited and the uniformity of the liquid deposition in the crowns of the trees as well as the transverse distribution of the liquid under the nozzles were evaluated. It was found that the air stream from the drone rotors increased the distribution of the liquid on the trees sprayed, mainly at the middle and lower levels of the crown. A higher deposition value of the liquid was sprayed from the twin flat nozzle than from the single flat nozzle. There was no significant effect of the difference in the distance between the trees, of 0.5 and 1.0 m, on the liquid distribution. Under the influence of the air jet, the uniformity of the liquid distribution in the crowns of the trees also improved.

The paper presents prospects and examples of drone – Unmanned Aerial Vehicle use in road rescue. There was presented the Drone Road Rescue System, which would be created from combining drones used for road monitoring and traffic accident identification, drones for delivery of necessary equipment and drones for remote transportation of victims to the hospital. Based on the already existing solutions, the various components of the system are discussed.

Woodchip sampling may be done according to two methodologies, based on the volume or calorific value of the fuel. The paper compares heating values obtained through relative humidity measurements according to Slovak technical standards and through determination of calorific value according to the ISO 1928:2003 Standard. The aim is to compare values obtained by both methods from a selection set and to determine possible reasons in case various values are obtained. Based on the results obtained it may be confirmed that differences between the heating value calculated according to the ISO 1928:2003 Standard and according to the STN 48 0057 (2004) and STN 48 0058 (2004) Standards are statistically significant. The average difference in heating value is 0.629 MJ·kg -1 .

Przedstawiono budowę i zasadę działania innowacyjnej prasy do formowania bel cylindrycznych norweskiej firmy Orkel (model MP 2000 Compactor). Dokonano oceny jakości uzyskanej kiszonki z wysłodków buraczanych sporządzonych przy użyciu tej prasy. Analizowane kiszonki uzyskały w skali Fliega-Zimmera najwyższą ocenę bardzo dobrą, co odpowiada jakości kiszonki formowanej w długich rękawach foliowych. Stwierdzono, że na rynku krajowym brak jest tego typu maszyny dla cukrowni bądź plantatorów buraka cukrowego, posiadających fermy krów mlecznych lub bydła opasowego.