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Evaluation of the solar conditions for the acquisitions of energy from renewable sources on the base of Sosnowiec city (Poland)

Sarapata S.

Contemporary Trends in Geoscience

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2014

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Vol. 3, iss. 1

82--89

EN

The country’s energy security risk, as well as a desire to protect the environment from the pollution and degradation which are the results of conventional fuels acquisition – these was a motivation for intensive researches on the use of renewable energy sources in eco – innovative installations. Solar radiation is one of the self – renewable energy sources which can be used both as a source of electricity and heat. The area of research is Sosnowiec city located in the south of Poland in the eastern part of Silesia voivodeship. The solar radiation data covering the years 2003 to 2013 was used. The intra – annual variability of daily averaged solar radiation hesitated in a wide range from 0.6 kWh/m2 (December) to 5.2 kWh/m2 (June). Day duration varies on average from 10 hours in January, November and December to 17 hours in May, June and July. Day occupies 56% of the 8767 hours in year. On average the largest amount of energy reached the analyzed area in July: 157 kWh/m2 (15% of the annual average), while the smallest in December: 18 kWh/m2 (less than 2% of the annual average). The 75% of the average annual total of energy falls on the period from 1st March to 31th August (spring – summer). The range of the annual solar radiation was determined by the minimum of 980 kWh/m2 and the maximum of 1094 kWh/m2. In Sosnowiec the average annual irradiation total on the horizontal surface amounts to 1052 kWh/m2 (2003 – 2013).

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Badania pilotowe procesu odwadniania osadów ściekowych w oczyszczalni Tychy-Urbanowice

Bacza T., Krawczyk T., Pieczykolan M., Romańczuk P., Sarapata S

Forum Eksploatatora

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2013

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Nr 6 (69)

56-60

PL

Odwadnianie osadów ściekowych, to proces oddzielania wody od osadów, mający na celu zmniejszenie objętości osadów przec kolejnym etapem ich przeróbki lub unieszkodliwiania. Koszty przeróbki i usuwania osadów ściekowych, mimo niewielkich objętość osadów w porównaniu do objętości dopływających ścieków do oczyszczalni, mogą stanowić połowę kosztów ogólnych zakładu [ Z tego powodu odwadnianie osadów powinno być prowadzone w sposób prawidłowy, zoptymalizowany, kontrolowany i nakierowany na minimalizację kosztów. Aby proces odwadniania mógł być prowadzony w sposób prawidłowy, urządzenie odwadniające jak również flokulant, muszą być odpowiednio dobrane do charakterystyki osadu ściekowego. W praktyce przeprowadza się testy doboru flokulantów, które często związane są z postępowaniami przetargowymi. Z kolei prawidłowo przeprowadzony proces inwestycyjny związany z zakupem nowego urządzenia, również wymaga przeprowadzenia badań konkretnego urządzenia na rzeczywistym osadzie ściekowym. W niniejszym artykule przedstawiono opis badań pilotowych urządzeń do odwadniania osadów ściekowych w oczyszczalni Tychy-Urbanowice.

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Evaluation of the wind conditions for the acquisition of energy from renewable sources on the base of Sosnowiec city

Sarapata S.

Contemporary Trends in Geoscience

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2013

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Vol. 2, iss. 1

75--81

EN

Inherent in the continuous development of civilization is a constant increase in demand for electricity. The result of this situation could be a threat to cover domestic demand for electricity generated from domestic sources. It is significant therefore, to increase the energy security of the country, as well as to generate a positive impact on the development and dynamics of social and economic processes which is carried by the development of renewable energy sources. A crucial argument for the need to implement new sustainable solutions is growing environmental degradation and pollution resulting from the acquisition and use of non-renewable energy resources. Renewable energy resource for interest of this analysis is the wind. A crucial feature of the wind is its high volatility. Wind speed is characterized by diurnal, seasonal and long-term variation. The study area is Sosnowiec city. The analysis covers the data from the period 2002 – 2011 obtained using a meteorological station located in the Department of Earth Sciences, University of Silesia in Sosnowiec. Analyzed data are observations of wind speed measured at the height of 10m above the ground – average values of 10 minutes. The mean and maximum daily, monthly and annual values of wind speed have been calculated, and on their basis, a relevant analysis have been made. Average wind speed value for the analyzed area of the analyzed period (2002 – 2011) is 1,70m/s, while the maximum wind speed value is 3,78m/s. Sosnowiec is located in zone IV – unfavorable for the use of wind energy.