Type 99 --- COMBCH
                                ==================

ADIABADIC COMBUSTION CHAMBER MODEL.

The purpose of routine COMBCH is to allow a very simplified study of the 
combustion process that takes place inside the combustion chamber in 
order to calculate :
        -The fuel-air ratio f;
        -The adiabadic temperature of the combustion products Tgsu ; 
        -The composition of the combustion products ; 
        -The enthalpy of the combustion products Hgsul.

The combustion chamber model allows one to make use of the fuel lower 
heating value (FLHV) defined at a given reference temperature (Tt).

The condition to have an adiabadic combustion is :

        Qdotg = Qdotr - Qdota - Qdotf

where   -Qdotg is the heat transfer in the postheater; 
        -Qdotr is the heat transfer in the isothermal reactor;
        -Qdota is the heat transfer in the air preheater;
        -Qdotf is the heat transfer in the fuel preheater. 




Input, Output and Parameter descriptions are in the *.for file. For More 
details, see the HVAC1KIT manual.

For a complete  description of the routine, reference the HVAC1KIT manual, 
prepared by;
Jean Pascal BOURDOUXHE and Marc GRODENT, Research Assistants.
Jean LEBRUN, Principle Investigator.