The dispute between Poland and Germany over the northern parts of
roadstead adjacent to Świnoujście and Szczecin sea ports casts a shadow
on good relations between those nations. The dispute concerns the
anchorage and the port approach route.
On 25 November 1994 Germany
have unilaterally declared those areas part of their exclusive economic
zone.
The Author advocates for solutions envisaged in international agreement on maritime border delimitation between former People Republic of Poland and former German Democratic Republic. The agreement was signed in Berlin on 22 May 1989.
The paper presents a model for calculations of the temperature field in electric mine motors with a water cooled frame. That model was worked out with use of modified and improved thermal networks developed by the author for determining the temperature distributions in different types of ac machines. Thermal calculations for a selected type of 400 kW mining motor were performed with use of an original computer program. Their results were compared with those obtained from measurements. On the basis of the verified simulation results there was determined the influence of value changes of parameters characterising the work environment condition (ambient temperature, inlet temperature and cooling water discharge, degree of covering the casing with coal dust) on the mining motor thermal state.