Control system development for an organic Rankine cycle engineThe development of a control logic to govern the toluene throttle valve and verify the stability of the speed control approach for multiple engines connected to a 1 MWe point focus solar generator installation for distributed applications is presented. The toluene is is pumped by booster and main feed pumps through a regenerator to the parabolic focus receiver, with the flow rate controlled by a valve to remain at critical level of 4.1 MPa. The valve changes the inlet pressure at the turbine nozzle block. Each concentrator would produce 76 kWth and 20 kWe. Dynamic variables in the logic account for insolation variation, fluid temperature, ac grid voltage, the thermal dynamics of the regenerator, and variations in the head supplied by the feed pump. Separate analyses are presented for the turbine shaft speed and toluene loop dynamics. The resulting logic is considered preliminary and suitable only in full insolation conditions. Extension of the model to nonlinear perturbations is indicated.
Document ID
19820060791
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Bergthold, F. M., Jr. (Ford Aerospace and Communications Corp. Newport Beach, CA, United States)
Fulton, D. G. (Ford Aerospace and Communications Corp. Newport Beach, CA, United States)
Haskins, H. J. (Ford Aerospace and Communications Corp. Aeronutronic Div., Newport Beach, CA, United States)