Components for Hybridisation
The channel burner model assumes a complete combustion. It evaluates the fuel consumption, the output mass flow and the composition of the exhaust gas by a given mass flow of air entering the
burner and a desired temperature. This burner model is used in the gas turbine as well. The gas turbine consists of a compressor, a burner, a turbine and a generator. Compressor and turbine are computing the resulting enthalpy and power consumption or production by using an inner efficiency. In addition, a pressure ratio can be set by the user.
Solar Cycle
The heliostat field model is based upon a simple field efficiency table interpolation dependent of the site, date and time. Only the total power to the receiver is calculated. The receiver outlet mass flow and temperature are calculated from the mass and energy balance and are dependent of the inlet conditions of the air flow and the concentrated radiation input.
Gas and steam properties can be integrated to each model. The different state variables are computed for Water and Steam by polynoms taken from the industry standard IAPWS-IF97 and for different gas mixtures by algorithms given in the VDI Guideline 4670 and provided by NASA.
Each model component created has the following advantages:
• is compatible to all others
• enables calculation for different site locations
• is applicable for different power plant sizes
• can be adjusted to different transport media: e. g. gas, exhaust gas
• easy modification
• can be used for short time scales down to minutes
