%0 Journal Article
%T Comparison between the costs of utilization of energy efficiency reserves in thermal power plants and heating plants and the costs of construction of new energy sources
%A Waldemar J£¿dral
%J Journal of Power Technologies
%D 2012
%I Warsaw University of Technology
%X The paper presents the possibilities of decreasing electric energy consumption for auxiliary on-site needsin thermal power plants and combined heat and power plants by increasing energy efficiency of boiler feedwater and cooling water pumping. Signi cant bene ts can also be achieved by utilization of energy efficiencypotential in circulating water systems in combined heat and power plants and heating plants. A comparisonbetween energy and economic eects of modernization of pumping systems and unit costs of new energysources is also made. It is shown that even highly expensive modernizations are twice less costly than theinvestment in the most economical energy source, i.e. the gas power plant. It is shown that, when consideringconstruction costs of new energy sources, one should take into account their capacity factors by determiningequivalent capital costs of the source referred to its continuous work in a year period, i.e. during 8 760 hrs.In these terms, photovoltaic and wind power plants turn out to be much more expensive than nuclear powerplants.
%K Energy efficiency
%K Energy sources
%K Modernization costs
%U http://www.papers.itc.pw.edu.pl/index.php/JPT/article/view/281/503