Temat: DMR - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Trunked Radio Solutions for Special Applications
Autorzy:: Gajewski, S.
Gajewska, M.
Katulski, R. J.
Powiązania:: https://bibliotekanauki.pl/articles/226766.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: LTE
trunked radio
TETRA
DMR
Opis:: In the paper modern concepts of radio communication trunking-dispatch systems for special applications are presented. Basic standards of TETRA, DMR, and cdma2000 are mentioned. The aim of the paper is to present innovative trunking solutions based on the LTE system working both in FDD and TDD mode. The architecture of LTE trunked radio is shown as well as new services possible to implementation are described. The way of TETRA and LTE integration is characterized.
Źródło:: International Journal of Electronics and Telecommunications; 2014, 60, 4; 309-314
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A study of LNG processes to determine the effect of end flash systems on efficiency
Autorzy:: Akinsipe, Oluwagbemisola
Anozie, Ambrose
Babatunde, Damilola
Powiązania:: https://bibliotekanauki.pl/articles/240578.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: C3MR
DMR
Efficiency
Exergy destruction
End flash
LNG
Opis:: This paper describes the simulation, exergy analysis and comparison of two commonly applied liquefaction of technologies natural gas, namely: propane precooled mixed refrigerant process (C3MR) and dual mixed refrigerant process (DMR) alongside two modifications of each employing end flash systems. The C3MR and DMR process schemes were simulated using the commercial software to mathematically model chemical processes. These schemes were then analysed using energy and exergy calculations to determine their performances. The exergy efficiency for the C3MR processes without end flash system, with simple end flash system and extended end flash system were evaluated as 29%, 31%, and 33%, respectively, while the exergy efficiency for the DMR processes without end flash system, with simple end flash system, and extended end flash system were evaluated as 26%, 25.5%, and 30%, respectively. The results achieved show that the extended end flash system versions of the schemes are most efficient. Furthermore, the exergy analysis depicted that the major equipment that must be enhanced in order to improve the cycle exergy efficiencies are the compressors, heat exchangers, and coolers.
Źródło:: Archives of Thermodynamics; 2020, 41, 2; 35-63
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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