Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: condenser model

Sortuj według:

Ogranicz wyniki do:

Determining steam condensation pressure in a power plant condenser in off-design conditions

Laskowski Rafał, Smyk Adam, Ruciński Adam, Szymczyk Jacek

Archives of Thermodynamics

2021

Vol. 42, no 3

45--62

The paper presents formulas which can be used to determine steam condensation pressure in a power plant condenser in off-design conditions. The mathematical model provided in the paper makes it possible to calculate the performance of the condenser in terms of condensing steam pressure, cooling water temperature at the condenser outlet, and condenser effectiveness under variable load conditions as a function of three input properties: the temperature and the mass flow rate of cooling water at the condenser inlet and the mass flow rate of steam. The mathematical model takes into account values of properties occurring in reference conditions but it contains no constant coefficients which would have to be established based on data from technical specifications of a condenser or measurement data. Since there are no such constant coefficients, the model of the steam condenser proposed in the paper is universally applicable. The proposed equations were checked against warranty measurements made in the condenser and measurement data gathered during the operation of a 200 MW steam power unit. Based on the analysis, a conclusion may be drawn that the proposed means of determining pressure in a condenser in off-design conditions reflects the condenser performance with sufficient accuracy. This model can be used in optimization and diagnostic analyses of the performance of a power generation unit.

Modelowanie siłowni na parametry nadkrytyczne przy zmiennych warunkach pracy układu chłodzenia

Wróblewski W., Dykas S., Rulik S.

Systems : journal of transdisciplinary systems science

2008

Vol. 13, spec. iss. 2/2

255--261

In this paper the thermal cycle model of supercritical power plant conjugated with the cooling system working at different operating conditions was presented. The calculations for reference unit of 600 MW output with close cooling system were made. The basic parameters and construction type of cooling tower and condenser were assumed. The algorithm for cooling system consists of the cooling tower model and condenser model was presented. The iteration process to calculate the parameters of thermal cycle and cooling water cycle was described. The influence of atmospheric temperature changes typical for the one-year period on the power plant performance indicators was discussed. The results were presented and the investigations were summed up.