Wyniki wyszukiwania - BazTech

1

Sterowanie i monitoring pompowni

Hałupka Zbigniew

Instal

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2022

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nr 7/8

42--48

PL

Postęp w zakresie rozwiązań pompowni wody, stosowanych w ostatnich latach w systemach zaopatrzenia w wodę miast, osiedli czy budynków, spowodował głównie rozwój układów sterowania. W artykule na podstawie analizy warunków pracy pompowni oraz krótkiej historii rozwoju systemów sterowania, omówiono zmiany jakie nastąpiły w procesie projektowania i wykonywania pompowni wody. Następnie zaprezentowano przewidywane zmiany w metodach eksploatacji pompowni, które nastąpią po wprowadzeniu dostępnego obecnie zdalnego monitoringu pracy tych urządzeń.

EN

The development in the range of applied lately solutions concerning water pumping stations designed for water supply systems for towns, housing estates or buildings caused mainly the development of control systems. The changes in the design and construction process of water pumping stations were discussed in the article on the basis of the analysis of pumping station's working conditions and brief history of control systems development. The foreseen changes in pumping station exploitation, which would follow after the increment of currently accessible remotely monitoring of these devices functioning, were afterwards presented.

2

In-situ performance evaluation of photovoltaic solar water pumping system in the rural region

Maka Ali Omar, Chaudhary Tariq Nawaz, Hasan Abdulazez, Gatou Ahmed

Journal of Mechanical and Energy Engineering

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2019

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Vol. 3, No 1

69--76

EN

The Photovoltaic solar cells convert the radiant energy from the Sun directly to electricity. Solar photovoltaic systems can help to fulfil the entire energy demands in rural areas by harnessing all the opportunities and potentials. The water is an important element in the life of plants, animals and human being. In this paper, it has been studied that solar energy could be used for water pumping applications such as providing water to rural and remote areas. It is being practiced in south Libya. The data is being collected over two years by measuring the water flow on daily basis at pumping head of (35m). In addition, this presents an evaluation of PV system in water pumping and piping systems and estimation of pumping energy cost. The solar pumping systems depend on water flow rate, pumping head and solar irradiance. The system components contain inverter, pump and PV generator. Besides, the effects of the climate and operating conditions on the performance of PV pumping systems has been discussed.

3

A comparison between directly connected and MPPT connected solar powered water pumping system using PMDC motor

Sikder P. S., Pal N.

Journal of Power Technologies

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2018

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Vol. 98, nr 1

80--88

EN

This paper represents a comparative analysis of two photovoltaic pumping systems. To study the performance of the Maximum Power Point Tracking (MPPT) system, two models were simulated using Matlab/Simulink and the performance of a directly connected photovoltaic (SPV) pumping system was compared to an MPPT connected SPV pumping system at various levels of solar irradiance. The MPPT system maximizes overall system efficiency, but makes the system complex compared to the directly connected SPV pumping system. Instead of the conventional boost converter the MPPT system contains a buck converter to maintain overall system voltage at the lower levels required by the permanent magnet DC (PMDC) motor. For simplicity, the MPPT controller follows the perturbation and observation (P & O) algorithm and controls the buck converter to maximize overall system efficiency at various levels of solar irradiance. The PMDC motor provides high weight-to-torque density, better speed control, low inertia, and lower losses compared to induction and the conventional DC motor. The comparative analysis shows that the MPPT connected SPV system is more efficient than the directly connected SPV system for water pumping purposes using a PMDC motor.

4

Nakłady inwestycyjne i koszty eksploatacji [ujęć, stacji uzdatniania, pompowni wody]

Rauba E., Miłaszewski R.

Wodociągi - Kanalizacja

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2013

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nr 7-8

36--38

5

Analiza koncepcji modernizacji miejskiej pompowni wody czystej

Łuźniak M, Wójtowicz P., Ferenc Z., Kotowski A.

Instal

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2013

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nr 11

56--61

PL

W pracy przedstawiono warianty modernizacji pompowni wody czystej, pracującej w złożonym systemie wodociągowym miasta Kłodzko, położonego w terenie górskim. Na potrzeby opracowania wykonano inwentaryzację wyposażenia instalacyjnego eksploatowanej obecnie pompowni oraz kluczowych obiektów systemu dystrybucji wody (zbiorników). Po analizie występujących problemów eksploatacyjnych w pracy pompowni i po określeniu warunków technicznych jej współpracy z systemem dystrybucji wody, zaproponowano kilka wariantów racjonalnej modernizacji pompowni. Opracowano model hydrauliczny współpracy pompowni IIstopnia z siecią wodociągową w programie EPANET. Dla opracowanych koncepcji modernizacji pompowni wykonano kosztorysy, które umożliwiły (względne) porównanie kosztów inwestycyjnych i eksploatacyjnych proponowanych rozwiązań technicznych.

EN

The paper presents various upgrade versions of a clean water pumping station working in a complex water supply system of the city Kłodzko, located in the mountainous terrain. The detailed inventory of installation equipment in currently operated pumping station and key objects in water distribution system (water tanks) were prepared. Following analysis of the existing operational problems in pumping station and determination of the technical conditions in connection with the water distribution system, several variants of rational modernization of pumping was proposed. Hydraulic model of the main pumping station and the water distribution network in EPANET was developed. For the variants under consideration cost estimation was made that allowed the (relative) comparison of investment and operational costs of the proposed technical solutions.

6

Pompy Wilo-EMU pracują dla Przemyśla

Moskal P.

Nowoczesne Budownictwo Inżynieryjne

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2012

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Nr 6

32-34

PL

Głównym źródłem zaopatrzenia mieszkańców Przemyśla w wodę pitną jest San. Ujęcie powierzchniowe już od czasów międzywojennych funkcjonuje w dzielnicy Prałkowce, a w latach 70. XX w. zbudowano na rzece jaz spiętrzający wodę wraz z niezbędnymi urządzeniami wodociągowymi.

7

Ocena efektów modernizacji pompowni wody sieciowej w PGE Elektrociepłowni Lublin-Wrotków

Jedut A., Stańczyk M.

Maszyny Elektryczne : zeszyty problemowe

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2010

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Nr 85

117-123

EN

The article contains general information about the modernization process of the circulating water pumping station at the PGE Lublin-Wrotków CHP Plant, in which the most important part was the modernization of the PWS6 pump drive, finished in December 2007. The two-year long operation of the modernized pumping station let us estimate the achieved savings in electricity consumption, just as the financial and environmental effects. The achieved results were estimated in comparison to the values which were supposed before the ultimate decision of the modernization.

8

Modernizacja pompowni wody sieciowej w Elektrociepłowni Lublin-Wrotków

Jedut A., Stańczyk M.

Maszyny Elektryczne : zeszyty problemowe

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2007

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Nr 78

13-17

EN

The article contains general information about the modernization of the PWS6 pump drive with respect the whole modernization process of the circulating water pumping station at the Lublin-Wrotków CHP Plant. The circulating water pumping station is the biggest system at the plant, with the total installed power demand of 5,8 MW. It includes seven pumps (three pumps type 35W50 and four modernized pumps type 35W50M). The pumps operate in parallel and supply a common collector for the demand of the Lublin District Heating System. Two pumps are controlled by regulation of rotary speed one by means of frequency converter and the next one through a sub-synchronic cascade system. At present, the system is overloaded (in terms of hydraulic) with one or two controlled pumps, or three pumps while one pump has no control. In order to keep the system supply parameters the non-controlled pump must be throttled. Modernized PWS6 pump (new motor and frequency converter) lets replace a non-controlled pump (in case of three pumps operation) or the pump controlled through a cascade system (in case of two pumps operation). As a result, the system will operate without throttling losses. It is estimated that the achieved savings in electricity consumption will reach about 900 MWh per year. It implicates significant financial savings just as environmental effect (reduction of emissions).

9

Tłocznia gazu ziemnego w Systemie Gazociągów Tranzytowych Jamał - Europa

Gerwatowski D.

Nowoczesne Gazownictwo

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2006

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nr 1

27-32

10

Uwagi do dwuparametrycznej metody wyznaczania niezawodności obiektów wodociągowych

Iwanejko R., Budziło B.

Czasopismo Techniczne. Środowisko

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2003

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R. 100, z. 7-Ś

145--152

EN

Water supply system should be reliable, i.e. it should continuously produce and supply to consumers water in sufficient amount, good quality and under required pressure. One- and two-parametric methods are used to evaluate water systems. reliability. Two-parametric methods allow performing numerical evaluation of two independent parameters of the system (e.g. mean operation time T[pS], mean renovation time T[nS], stationary readiness factor K[S]). The paper presents example of actual structure, for which application of two-parameter method based on failure frequency function produces T[nS] results with large error. New formulas have been proposed, which are mathematically equivalent to the classic formulas. The results obtained with the new formulas show no numerical errors.