Janeček A., Adamovský R., 2012. Optimisation of a clam bunk skidder from the emission production point of view. Res. Agr. Eng., This article presents a proposal of a simple mathematical model for minimisation of the production of extraneous substances as a function of the rate of operation performance of a production system. The model is then verified by operation tests of the Terri 2040 clam bunk skidder and by determining the system's optimal rate of performance from the point of view of production of SO 2 , HC and NO x emissions. The operation tests conducted to verify the mathematical model have confirmed that conditions can be determined for the production system at which it produces minimum emissions. Min. values of SO 2 , and HC were achieved at approximately the same rate of performance of the clam bunk skidder. Minimum values of NO x were achieved at significantly higher rate of performance of the equipment. At the calculated optimal rate of operating performance of the Terri 2040 clam bunk skidder, the values of the produced emissions were determined per m 3 of timber: SO 2 = 1.00035 g/m 3 , HC = 7.796 g/m 3 and NO x = 0.277 g/m 3 .
In this paper is evaluated an optimal constructional and operating performance of the mobil terrain system, that works in forest ecosystems from point of view of volume of processed biomass and total amount of logging transport erosion. A monitored terrain system, working in forestry, is considered as a production system, with its material and energy flow. The determination value, that optimizes the production system, is the operating and constructional performance. In this paper is evaluated the amount erosion in dependence of cutting mass, by means of mathematics and from system point of view. The conditions for the mobile terrain system work, that insure optimal, i.e. minimal value of erosion will be determined. The theoretical results are verified. The optimal values of soil erosion are determined by experimental measurements. The principles of the paper are based on theses of ecological synthesis that determine coupling between dissipative energy of a production system and its ecological cleanliness of work.
This paper deals with the possibilities of minimizing the emissions of heterogeneous substances/pollutants (SO 2 , NO x and NC x ) per volume unit of processed timber, based on measurements of the design and operating performance of a mobile off-road system working in the forest environment. The forest production system is taken to mean the production system into which the material and resource flow and/or even the workforce flow enter. During the production process the material, power and/or workforce flow is transformed into the final product (processed timber, soil preparation, afforestation, etc.). Operating and/or design capacity is the control variable optimizing the operating mode of the forest production system. The quantities of emitted pollutants related to the work unit done by the production system represent the criterional function specifying the optimization of parameters of the mobile offroad system working in the forest sector. The conditions for the operating mode (performance) of the mobile off-road system working in the forest environment under which the minimum emitted pollutants related to the unit of done work are reached have been determined. The theoretical conclusions have been verified experimentally.Keywords: forest technology; SO 2 , NO x , NC x ; optimizing; minimization 126 J. FOR. SCI., 54, 2008 (3): [125][126][127][128][129][130] that NO x emissions could be effectively reduced by proper injection timing. The authors' focus was however the engine design.None of the above-mentioned authors has been engaged with a possibility of affecting the amount of emissions through the regime of work or by using the technique of rational performance and by specifying the work regime at which emissions are the lowest. Only Berg and Lindholm (2005) studied a possibility of fuel-related (CO 2 , SO x ) or engine-related (hydrocarbons, NO x ) emissions decreased by the use of renewable fuels and through the improvement of the engine design and better adjustment of engines designed for operations in the forest.Nevertheless, should the machine (system) be already made, emissions can be optimized by its suitable rational performance. The most important measures compensating the environment contamination by extraneous substances are preventive measures that can be applied on a larger part of the area of endangered forest ecosystems. According to Janeček (1992), the measures consist in the selection of appropriate and environment-friendly technologies including the choice of suitable machinery, and in using acceptable methods for the employment of machines with the rational performance. Possibilities to determine the rational performance of machines are further discussed in this paper.The objective of this paper was to present some results from the analysis and from the determination of mathematic conditions required for reaching minimum specific emissions from logging and transport operations in the forest in relation to extracted mass unit. MAteRiAlS And MethodSThe outline of deduction of the...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.