Wyniki wyszukiwania - BazTech

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Modelling the Natural Gas Transportation Process using the Factorial Experiment Method

Țîțu Aurel Mihail, Pop Alina Bianca, Nabiałek Marcin

Archives of Metallurgy and Materials

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2023

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Vol. 68, iss. 3

961--966

EN

The research presented in detail in this scientific paper refers to the modelling of process parameters for natural gas transmission in a centralized system. The method of the factorial experiment was used to model some parameters considered to be vital, namely the gas temperature, the air temperature as well as a certain correction factor on the flow delivered to the population. The study was conducted by accessing information provided by a regulation-measurement station that delivers gas to an important locality in a locality in central Romania. Experimental data collected over 24 hours on a summer day but also on a winter day were used. After a previous study with classical experimental research methods, the factorial experiment was used, which allows the delivery of much more detailed information and the graphical representations are much more precise and detailed, in other words, relevant and useful conclusions can be obtained on objective studied in the research approached.

2

Research and analysis of the network performance in data transmission aspect

Kamińska-Chuchmała A.

Rynek Energii

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2015

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Nr 1

104--107

EN

In an era of rapidly expanding Internet network, which can plays role as a transmission medium in smart metering communication, due to the modernization and development of new network connections, as well as the possibility of higher throughput, investigations over network performance must be repeated periodically. Moreover, the issues of end users or Internet users are also important, who are ever more demanding about the size of the data collected and the speed of transmission. Therefore, active experiment was performed, which included download speeds between servers that are located on different continents and then, the results in terms of network performance were analysed. Measurement studies were performed in two different seasons of year 2014: in the spring and winter, in order to determine also the possible impact of atmospheric factors on the behaviour of the network and clients. For the preparation and implementation of active measurement experiment global research network - PlanetLab - was used.

PL

W dobie szybko rozwijającej się sieci Internet, która może występować jako medium transmisyjne w komunikacji smart metering, ze względu na modernizację lub tworzenie nowych połączeń sieciowych, jak również możliwości większej przepustowości należy cyklicznie powtarzać badania nad jej wydajnością. Dochodzą tu kwestie odbiorców końcowych, czyli użytkowników sieci Internet, którzy mają coraz większe wymagania co do wielkości pobieranych danych jak i szybkości transmisji. W związku z tym dokonano aktywnego eksperymentu pomiarowego w którym została zmierzona m.in. prędkość pobierania danych pomiędzy serwerami zlokalizowanymi na różnych kontynentach a następnie przeanalizowano wyniki pod kątem wydajności sieci. Badania pomiarowe wykonano w dwóch różnych porach 2014 roku: wiosną i zimą, aby móc również określić ewentualny wpływ czynników atmosferycznych na zachowania sieci oraz klientów. Do opracowania i wykonania aktywnego eksperymentu pomiarowego posłużono się globalną siecią badawczą PlanetLab.

3

Research on influence of condition elements the supercharger system on the parameters of the marine diesel engine

Witkowski K.

Journal of KONES

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2013

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Vol. 20, No. 1

375--380

EN

This paper presents the issues related to the impact of the technical condition elements of the turbocharger system on the parameters of marine diesel engine. Turbocharger system, in addition to the injection system has a significant impact on the quality of the working process, the economics and reliability of the engine. Contamination of elements of the turbocharger system are the most common faults (24.7% of all damage to marine engines). Contamination the following relates to elements: air filters, compressor, air cooler, scavenging system elements and turbine. The detailed data follows that the contamination are usually in: flow channels supercharger – 56%, turbine flow channels – 22%, air cooler – 11%, air filter – 6%, scavenging system elements – 4%, other elements – 1%. The technical condition influence of air filter, compressor and air cooler was analyzed. The analysis was supported by the results of their own research, carried out in the laboratory on the marine diesel engine, four– stroke 3AL25/30 SULZER, supercharged turbocharger VTR160N Brown Boveri. The research was performed in the form of an active experiment to simulate contamination of particular elements of the turbocharging system. Technical condition change of the air filter, the air compressor and the air cooler have been investigated.

4

Pomiary wydajności Internetu - studium przypadku

Nowak Z., Smorawski D.

Studia Informatica

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2011

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Vol. 32, nr 3A

93-102

PL

Analizie poddano dane pomiarowe, zarejestrowane w trakcie eksperymentu prowadzonego przez system MWING. Cztery agenty systemu rejestrowały czasy etapów transakcji WWW z 52 serwerami na całym świecie. Wyniki obrazują charakter ruchu sieciowego WWW oraz prezentują występujące zależności i zjawiska, mające wpływ na wydajność Internetu.

EN

We analyzed the measurement data recorded during an experiment conducted by the MWING system. Four agents accounts the transaction times of 52 Web servers around the world. The results illustrate the nature of Web traffic and present relationships and phenomena that affect the Internet performance.