LISZKA M., MAJCHRZAK H.
Analysis of Ecological Effects in Coal and Bio-Mass Co-combustion Process Exemplified by Opole Power Station
Energetyka 2005, no. 3, p. 133, figs 8, tabs 3, refs 6
An assessment criterion of ecological effects in the process of the biomass co-combustion with fossil fuels should be based on the consumption change of the last ones calculated for unit quantity of the useful product of given process. Achieved results of simulated calculations prove an existence of influence of the co-combustion process on the power boiler and power unit efficiency. Independently on limitations of the co-combustion of the bio-mass and coal in the great power units ecological and social profits of the process are evident.
KOŁAKOWSKI T. E.
From Communal Power Industry to State Own and next to Private One.
100 Years of Cracow Power Industry
Energetyka 2005, no. 3, p. 141, figs 8, tabs 4, refs 10
In this jubilee paper are presented the electrification beginnings of the town (years 1880 – 1905), a history of Cracow Municipal Power Station, after-war thirty year period (1945 – 1976), so the end of municipal power in Poland, structural changes and development of state own power industry, intensive development of the national terrain power grid, electrification of the villages construction of Łęg CHP station and thirty year period (1976 – 2005) – period of re-organisation, commercialisation and privatisation.
In the paper there are mentioned many companies grouping considerable number of remarkable specialists in the field of the power engineering, these ones who have exerted an influence not only on the power sector of Cracow agglomeration but also on the national power industry.
An information on the celebration of the 100th Anniversary of Cracow Power Industry is inserted.
PASKA J., SAŁEK M., SURMA T.
Electric Energy Generation with Use of Renewable Energy Resources
Energetyka 2005, no. 3, p. 153, figs 13, tabs 10, refs 43
It is possible to classify the renewable energy in various ways, but the most general one includes flowing kinds of energy: the sun radiation energy, geothermal energy, tide energy, wind energy and bio-mass energy.
Advantages dominate in the renewable power, though this kind of power has also drawbacks which make hard practical energy utilisation. The wind as an energy carrier was utilised in the antiquity already. The wind motor is an engine converting the wind kinetic energy into the mechanical labour.
The sun radiation energy can be converted into heat or electric energy.
When converting into the heat, the sun radiation heats working fluid, which fulfils a heat exchanging function.
KARCZ H., KOZAKIEWICZ A.
Thermal Utilisation of Animal Wastes
Energetyka 2005, no. 3, p. 173, figs 11, tabs 2, refs 14
Tested materials have relatively low calorific value in the working state.
For the stabile combustion process and not harmful for the environment they require thermal stabilisation with the aid of fuels with high calorific value. During the utilisation, the combustion process of animal wastes is not burdensome for the environment. There was not proved a bad smell during the combustion process, as well as of the flue gas going out of the chimney and no bed smell getting out of the ash stored on the storage yard.
KWIDZIŃSKI L.
MV Insulated Overhead Line System – EXCEL and AXCES Universal
Cables
Energetyka 2005, no. 3, p. 184, figs 3, tab. 1
The EXCEL and AXCES universal cables thanks to their design can be used as traditional cables laid under ground, as well as insulated conductors in the overhead lines. These cables enable to use new solutions of the insulated overhead lines. These cables are dedicated to underground lines with frequent overhead passages over obstacles. They make easier design and construction of the MV lines.