Laboratorium Centrum Wodne

Warsaw, Poland

Laboratorium Centrum Wodne

Warsaw, Poland
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Rozbicka K.,Laboratorium Centrum Wodne | Michalak M.,Laboratorium Centrum Wodne | Michalak M.,Laboratory Water Center
Scientific Review Engineering and Environmental Sciences | Year: 2015

The aim of this work was to characterize the temporary and spatial distribution of traffic related air pollutants (NO2, PM10, O3, C6H6) and assessment of the relationship between meteorological conditions and air pollution concentration from three monitoring stations in Warsaw area. In the period from 2011 to 2013 average annual values of concentration NO2 were exceeded on all considered stations Warsaw (i.e. Komunikacyjna, Warszawa - Ursynów and Warszawa-Targówek). The values varied from 114 do 141% of permissible values (40 μg·m-3). In case of PM10 concentration permissible concentration of annual average value was exceeded on two stations and in case of ozone and benzene excesses not occurred. The greatest concentration values for analyzed pollutants were recorded on Komunikacyjna station situated in the city center in close proximity of communication routes. The least concentration values were recorded for city suburb areas Ursynów and Targówek situated in greater distance from the biggest traffic streets than Komunikacyjna station. Statistical analysis shows the relationship between meteorological conditions and high concentration of ozone during episode days and between particular meteorological elements and the concentration of analyzed air pollutants.


Sas W.,Water Center Laboratory | Sas W.,Laboratorium Centrum Wodne | Gluchowski A.,WULS SGGW | Bakowski J.,Water Center Laboratory | Szymanski A.,WULS SGGW
Scientific Review Engineering and Environmental Sciences | Year: 2013

In this paper threats from negligence of cyclic loading on footings by authors of Eurocode 7 as cause of weakness or loss mechanical properties was presented. "Shakedown" and Brakan's models which describe behavior of soil under cyclic loading was presented as example of behavior which soils perform during numerous of load. Barkan's model base on constants of compression and shear which can obtain by coefficient of elastic uniform compression (Cu). Way to define Cu constant based on Young modulus. Barkan's model describe soil as spring and by this cause authors of this paper propose change of Young modulus E equivalent to resilient modulus MR which can be obtain from cCBR test. © Warsaw University of Life Sciences Press, Warsaw 2013.


Papierowska E.,Laboratorium Centrum Wodne | Chaczykowski M.,Warsaw University of Technology
Scientific Review Engineering and Environmental Sciences | Year: 2013

The use of renewable energy sources is one of the country's energy policy targets, especially from the viewpoint of the implementation of the European Commission RES Directive. In this paper a review of the possibilities of using the organic-Rankine-cycle technology for power generation from renewable sources, such as solar energy, biomass and geothermal water is presented. It also discusses the problem of the selection of a suitable organic working fl uid, which depends on the particular application of the ORC system and the available heat source.


Malinowska E.,Laboratorium Centrum Wodne | Domanski P.,Laboratorium Centrum Wodne
Scientific Review Engineering and Environmental Sciences | Year: 2013

This paper presents the results of physical, chemical, oedometer and triaxial test. The laboratory tests were obtained on soft subsoil taken from S2 express road in Warsaw. The test results confirm, the very large compressibility and low strength parameters: c = 8,7 kPa and φ' = 31°. © Warsaw University of Life Sciences Press, Warsaw 2013.


Hewelke E.,Laboratorium Centrum Wodne
Scientific Review Engineering and Environmental Sciences | Year: 2013

The main objective of this study is an analysis of the phenomenon of hydrophobicity in peat-moorsh soil. Research took place in the drained Sapric Histosol, used as meadows, soil profi les located in the central basin of Biebrza Valley. The persistence and degree of water repellency were examined in the soil using water drop penetration time (WDPT) and alcohol percentage tests (MT). The research showed the extreme dependence of hydrophobicity on soil water content. The values of potential water repellency of the soils studied are much greater than for most mineral repellent soils.


Kubrak E.,Laboratorium Centrum Wodne | Rasinska M.,Laboratorium Centrum Wodne | Grabowski W.,Laboratorium Centrum Wodne
Scientific Review Engineering and Environmental Sciences | Year: 2015

The paper presents the results of investigations of a flow capacity of the conical vortex regulators. The research was conducted for the submerged and nonsubmerged outlet of the regulator. The results were presented in a form of characteristics of the free-flow and vortex flow in the regulator. The influence of the outlet form on hydraulic characteristics of the conical vortex regulator is demonstrated. The submergence of the outflow causes that the vortex flow appears for lower inflow rates than for the unsubmerged outflow.

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