The recently developed corona above water technique is applied to containing 10 mg l−1 methylene blue (MB) or methyl orange (MO). discharge pulses are created with a spark gap switched capacitor followed by transmission line transformer. pulse amplitude 40 kV; its duration 50 ns. At repetition rate of 10 Hz this leads an average power 0.6 W into the discharge. MB and MO completely decolourized in ~20 min. This corresponds yield ~4.5 gr kW−1h−1, which much higher than obtained other...

A technical overview of a European project on pulsed corona (PC) treatment polluted streams is presented. Versatile high-power systems that are capable cleaning both aqueous and gaseous in heterogeneous media, either above water reactor or an aerosol reactor, have been developed. Both reactors high-phenol removal yields from increase the biochemical oxygen demand/chemical demand ratio for several nonbiodegradable wastewaters to such degree further biodegradation becomes possible. The PC...

This paper analyzes the energy efficiency of a Micro Fiber Composite (MFC) piezoelectric system. It is based on smart Lead Zirconate Titanate material that consists monolithic PZT (piezoelectric ceramic) wafer, which ceramic-based material. An experimental test rig consisting wind tunnel and developed measurement system was used to conduct experiment. The allowed changing air velocity around tested bluff body frequency forced vibrations as well recording output voltage signal linear...

The analysis of the scavenging process in two-stroke engines is important terms achieved performance and emission toxic substances. amount mass air used for gas retained cylinder affect engine efficiency. When designing engines, most efficient charge exchange defined by efficiency parameter desirable. a opposed-piston aircraft diesel based on assumed model was analyzed this work. performed mechanical centrifugal compressor. A zero-dimensional created AVL BOOST program research. simulation...

This paper reports the results of simulation works Rotax 912 aircraft piston engine, which is a basic unit in most ultra-light aircrafts. The method for preparing model engine operation process was presented. Simulation tests were carried out AVL Boost programme. programme allows full use zero-dimensional and one-dimensional modelling. It also comparison other models. developed has enabled us to simulate flow air through inlet pipes, carburettors, valves combustion process. preparation...

In the past years there has been an increase in production and consumption of plastics, which are widely used many areas life. Waste generated from this material a challenge for whole society, regardless awareness sustainable development its technological progress. Still method disposal plastic waste focused mainly on their storage incineration, not using energy contained there. paper technology depolymerization with characteristics fuel oil resulting process, as alternative to traditional...

Abstract Direct electrical energization methods for removal of persistent substances from water are under investigation in the framework ytriD-project. The emphasis first stage project is energy efficiency. A comparison made between a batch reactor with thin layer and an aerosol reactor. method mainly application fast pulses. In case it compared DC. ozone concentration determined as indicator efficiency chemical reactions, yield 4 g/kWh DC reactor, 50 pulsed 50-100 For initial testing phenol...

This paper presents the results of work on reduction toxic metal content while decreasing its oxygen activity.During study effects different doses ozone in air used for aeration stabilized compost first post-thermophilic phase were analyzed.The showed possibility reducing concentrations metals and decrease activity by up to 30%, compared traditional system without using ozone.

This paper presents the research results on a 1D model of an opposed-piston two-stroke aircraft Diesel engine. The aimed at creating engine in question to investigate how performance is affected by compressor gear ratio. power was constant all operating points. are presented as graphs consumed compressor, efficiency and brake specific fuel consumption. optimal range ratio terms defined from results.

The paper describes simulation tests of a gas injector with the use numerical fluid mechanics. were carried out on CNG flap-valve which was connected an inlet manifold by additional injection pipe. Such model identified and calibrated basis test stand research. presents results in transient conditions (during valve opening closing) steady-state flow. analysis concerns pressure velocity flow selected points sections processes occurring areas have been presented. Moreover, essential for useful...

The paper presents the results of simulations a gaseous fuel supply system in Wankel engine. testing was conducted on zero-dimensional model designed injection that fuelled by hydrogen into intake manifold RX 50 Dymola software and its Pneumatics Module were used simulation. experiments determined what phenomena would occur inside helped develop tool to optimize design. analysis dealt with changes pressure mass flow rate individual components such system. research done steady states for one...

Given an action of a group $\Gamma$ on measure space $\Omega$, we provide sufficient criterion under which two sets $A, B\subseteq \Omega$ are measurably equidecomposable, i.e., $A$ can be partitioned into finitely many measurable pieces rearranged using the elements to form partition $B$. In particular, prove that every bounded subset $R^n$, $n\ge 3$, with non-empty interior is equidecomposable ball via isometries. The analogous result also holds for some other spaces, such as sphere or...

The analysis of the distribution thermal energy generated during combustion process in internal engines and estimation individual losses are important regarding performance efficiency. article analyses balance designed two-stroke opposed piston diesel with offset, i.e. angle by which crankshaft at side exhaust ports is ahead intake ports. Based on developed zero-dimensional engine model, a series simulations were performed steady-state conditions using AVL BOOST software. values losses,...

The purpose of the paper was to analyse costs recycling vehicles at local vehicle scrapping facility. article contains regulations concerning decommissioning, describes types recovery, networks, analyses structure a disassembly station, as well financial and institutional system in charge dealing with Poland. authors present number scrapped company level achieved recovery recycling. research presented shows situation industry. In addition, it has been observed that subsidies are directly...