Features of work of mixing type regenerative warmers in turbo installation of NPP

On the ground of common stability theory it was shown, that in the system of mixing low-pressure heaters (LPHs) it was possible not only aperiodic instability, as it was known, but oscillating instability too. Analyzing the work of mixing LPHs, the mathematical model has been imported: the heat exchange between steam and condensate streams was considered. The fact that the water on the exit of mixing LPHs has temperature lower then the boiling temperature under the inner pressure in LPHs, was took into consideration too. The area of utilization: investigations of stability of mixing LPHs at nuclear poser plants and heat electric stations, and stability of any contact heater