Efficiency of district heating of Brno by the Dukovany nuclear power plant

Providing heat to the town of Brno from the Dukovany nuclear power plant will require a reconstruction of the nuclear power plant in the years 1992 - 1995 for district heating. The existing regeneration heaters will be replaced by dual-purpose heaters which at the temperature gradient of 142/70 degC will allow to obtain from each turbine a heat output of 85 MW., i.e., a total of 680 MW. In the second stage after the year 2000 an increase in the temperature gradient to 156/70 degC will allow the overall heat output to be increased to 840 MW. The length of the heat supply pipe between the nuclear power plant and the outskirts of the town of Brno is 42 km and at will mainly be built on the surface. So far no final decision has been taken as to the diameter of the pipes (1,000 mm or 1,200 mm). When the pipes reach the outskirts of the town they will by-pass Brno in the north-west direction which will provide heat distribution using diversely laid 500 - 800 mm pipes to the existing system of district heating. A detailed description is presented of the economic analysis made from the enterprise point of view, i.e., an analysis of production costs of heat generation. Considering the aspect of economic benefit applying existing regulations, the given ensemble of structures is slightly unprofitable. (Z.M.). 2 figs., 5 tabs., 2 refs