Wszystkie pola: two-phase operation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Study of current space phasor trajectory of the three-phase asynchronous motor with one phase open circuit fault
Badanie trajektorii przestrzennego fazora prądu silnika asynchronicznego trójfazowego przy uszkodzeniu jednej fazy
Autorzy:: Záskalický, P.
Powiązania:: https://bibliotekanauki.pl/articles/1367339.pdf
Data publikacji:: 2016
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:: Fourier series
asynchronous motor
two-phase operation
fault tolerance
Opis:: The presented paper deals with the calculation of space phasor trajectory of the magnetization current of induction machine supplied by a converter under open-phase fault. To explore possibilities to reduce the impact of failure on the function of the machine is a winding node connected to zero point. Under open phase fault it is another possibility to improve behavior of the two-phase operation. There is still to apply a circular rotating magnetic field to the machine by imposing a 60o phase shift between the stator currents of the two supplied stator windings.
Źródło:: Maszyny Elektryczne: zeszyty problemowe; 2016, 3, 111; 147-151
0239-3646
2084-5618
Pojawia się w:: Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Exergy analysis of operation of two-phase ejector in compression refrigeration systems
Autorzy:: Dudar, A.
Butrymowicz, D.
Śmierciew, K.
Karwacki, J.
Powiązania:: https://bibliotekanauki.pl/articles/240804.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: two-phase ejector
compression refrigeration system
COP
exergy
strumienica dwufazowa
egzergia
Opis:: Paper deals with theoretical analysis of possible efficiency increase of compression refrigeration cycles by means of application of a two-phase ejector. Application of the two phase ejector in subcritical refrigeration system as a booster compressor is discussed in the paper. Results of exergy analysis of the system operating with various working fluids for various operating conditions have been shown. Analysis showed possible exergy efficiency increase of refrigeration compression cycle.
Źródło:: Archives of Thermodynamics; 2013, 34, 4; 107-122
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Optimization the operation parameters of SDA desulfurization tower by flow coupling chemical reaction model
Autorzy:: Mei, Dan
Shi, Junjie
Zhu, Yuzheng
Xu, Xuemei
Xing, Futang
Shi, Ling
Powiązania:: https://bibliotekanauki.pl/articles/778336.pdf
Data publikacji:: 2020
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: spray drying absorber tower
gas-liquid two-phase flow
droplet diameter
desulfurization efficiency
amount of scaling
Opis:: Spray Drying Absorber (SDA) has been widely used for large-scale desulfurization. However, it also has some limitations. For example, the liquid absorbent easily causes scaling, which impedes the contact between the serous fluid and the flue gas and reduces the chemical reaction rate and desulfurization efficiency. This paper establishes the mathematical and physical model of gas and liquid two-phase flow and droplet evaporation and heat transfer in rotary spray desulfurization tower. To study the accumulation and distribution of chemical reaction precipitates in the desulfurization tower and analyze the removal efficiency of sulfur dioxide (SO²) in different atomization diameters, this paper establishes a simulation model concerning the coupling of desulfurization reaction and flow field calculation based on the absorption and reaction mechanism of SO². Baffle in different widths are set to optimize the internal floweld and balance the distribution of flue gas. By setting baffles of different widths to optimize the flow feld in the tower and changing the distribution of flue gas, this model reduces the scaling while ensuring the desulfurization efficiency. The results of the simulation experiment have verified that the droplet with a diameter of 50 μm is the optimal option, which can effectively remove the scaling and ensure that the desulfurizing tower runs in high efficiency and stability. When the width of baffes is 2250 mm, the efficiency of desulfurization exceeds 95%, and the amount of scaling on the desulfurization tower main wall is controlled at the minimum level, which is the optimal option for production.
Źródło:: Polish Journal of Chemical Technology; 2020, 22, 1; 35-45
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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