Wpływ zmiany obcia̧żeń elektrociepłowni gazowo-parowej na charakterystyki termodynamiczne

In this paper are presented results of research on influence of the heat loads changes on energy efficiency coefficients: Energy Utilization Factor (EUF) and Primary Energy Saving (PES). The analysis was subjected to a work of a gas-steam heat and power plant with a double-pressure heat recovery steam generator. The thermal diagram of system and its thermodynamic parameters have been determined. The reference work profile of the system by means of a temperature and heat demanding characteristics of a heat distribution network has been assumed. The calculations for in turn decreased (with relation to reference) values of loads: demanding on heat and thermal power of gas-steam unit have been carried out. In first stage of research the boundary maximal thermal power of the gas-steam unit in function of maximal demanding on heat has been defined. The simulation of object's work, with received in accordance with this paper assumptions, have been conducted in range of ambient temperature from -20°C to +28°C. Except for efficiency coefficients simultaneously the changes of primary thermodynamic parameters have been investigated.