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Hydrogen in one of the most abundant elements in the universe (both in case of mole- and mass-fraction), yet it is characterised by very good thermal and combustive properties. These properties result among others from the large thermal expansion of this element; a temperature change from 20K (liquid hydrogen) to 293K (gaseous hydrogen) causes an 846-fold increase in its initial volume (provided that...
The basis of a combined cycle gas turbine mass and energy balance, carried at the concept stage, preliminary design or during analysis, is the calculation of the gas turbine design point. This article presents a gas turbine unit mathematical modelling process intended for implementation of the model in a computer program. The aim of the development was a relatively simple, practical from engineer’s...
In this paper we present the results of research conducted in 120 MW power units in one of bur country's power stations. The research allowed the evaluation of the units' availability in : terms of their compliance with the primary and secondary_control of the electrical power system. Electrohydraulic active power governors designed by the 'ITC' Heat Engineering Department of the Power Engineering...
In this paper the fundamental assumptions of a designed and created telemetry system used for monitoring. The system uses GPRS packet transmission for data exchange, while the whole software architecture of the system is based on three main segments of Java platform: Java ME, Java SE and Java EE.
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