A Numerical Method for Power Plant Simulations

Abstract

This paper describes a highly flexible computerized method of calculating operating data in a power cycle. The computerized method presented here permits the study of steam, gas and combined plants, Its flexibility is not restricted by any defined cycle scheme. A power plant consists of simple elements (turbine, compressor, combustor chamber, pump, etc.). Each power plant componment is represented by its typical equations relating to fundamental mechanical and thermodynamic laws, so a power plant system is represented by algebraic equations, which are the typical equations of components, continuity equations, and data concerning plant conditions. This equation system is not linear, but can be reduced to a linear equation system with variable coefficients. The solution is simultaneous for each component and it is determined by an iterative process. An example of a simple gas turbine cycle demonstrates the applied technique. This paper also presents the user interface based on MS-Windows. The input data, the results, and any characteristic parameters of a complex cycle scheme are also shown.

Modular approach to analysis of chemically recuperated gas turbine cycles

“…In this study we present the development of the required tools for simulation of CRGT plants, based on the modular approach developed by Carcasci and Facchini [5]. The current paper is restricted to development of tools for thermodynamic analysis of CRGT cycles.…”

“…A complete presentation of the modular approach used by the authors for power plant simulation may be found in a previous paper [5]. The method is summarized below.…”

Preliminary design and validation of a Real Time model for hardware in the loop testing of bypass valve actuation system

“…For an assigned fuel/air ratio of the burner, the mass flow rate of hot gas produced by the burner is proportional to the consumed fuel. To optimize computational resources for a Real Time application, authors preferred a tabular approach: a model developed by Carcasci [28], for the performance analysis in steady state conditions, is used to determine temperatures and exchanged heat fluxes of the plant considering different off-design conditions. These simulations are performed off-line.…”

“…The calculation of the outlet temperatures of superheater T SH and reheater T RH are approximated using tabulated results from static off-line simulations of the plant in off-design conditions. Off-line simulations are performed with a model previously developed by Carcasci [28].…”

“…The tabulated data are calculated using an off-line steady state model previously developed and validated by Carcasci [28].…”