Patent ID: 6536215
Filing Date: 2003-03-25
Classification: F01K,F24D,Y02B,Y02E

Abstract:
A method for optimally operating co-generation of electricity and heat in which a district heating power range is divided into a lower heating power range and a higher heating power range, comprising:providing base load electricity and regulation electricity produced with a steam turbine with operating parameters of a condensing turbine, wherein producing the lower heating power range mainly by heat pumps using anergy of exhaust steam of the steam turbine as an energy source, producing peak-load power and wintertime regulation electricity with a peak-load engine, producing the higher heating power range partially by heat pumps using said anergy as the energy source and partially by exhaust gas heat of said peak-load engine; producing both the electricity and the heat with a high fuel utilization rate and for increasing production of electricity in relation to production of heat; producing a bigger amount of electricity of a fuel unit at an initial stage of operation of a district heating power plant; and producing extra peak power with the peak-load engine at short notice and with a good fuel utilization rate.