scholarly journals HEAT FLOW RATE CHART FOR STEAM AND CONDENSATE ANALYZE CO-GENERATION STEAM TURBINE PLANTS USE REGIMES FLOATING OBJECTS WITH NUCLEAR POWER PLANT

2018 ◽  
Vol 10 (5) ◽  
pp. 1025-1039
Author(s):  
Vladimir I. Korolev ◽  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Heat Flow ◽  
Steam Turbine ◽  
Flow Rate ◽  
Nuclear Power ◽  
Heat Flow Rate ◽  
Floating Objects

scholarly journals Efficiency of Using the Auxiliary Boiler for Peak Power Generation by a Steam Turbine of NPP

2021 ◽  
Vol 64 (1) ◽  
pp. 78-90
Author(s):  
V. A. Khrustalev ◽  
M. V. Garievskii
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Steam Turbine ◽  
Nuclear Power ◽  
Power Plants ◽  
Normal Operation ◽  
Heat Output ◽  
Generation Process ◽  
System Effect ◽  
Industrial Enterprises

The article presents the technique of an estimation of efficiency of use of potential heat output of an auxiliary boiler (AB) to improve electric capacity and manoeuvrability of a steam turbine unit of a power unit of a nuclear power plant (NPP) equipped with a water-cooled water-moderated power reactor (WWER). An analysis of the technical characteristics of the AB of Balakovo NPP (of Saratov oblast) was carried out and hydrocarbon deposits near the NPP were determined. It is shown that in WWER nuclear power plants in Russia, auxiliary boilers are mainly used only until the normal operation after start-up whereas auxiliary boiler equipment is maintained in cold standby mode and does not participate in the generation process at power plants. The results of research aimed to improve the systems of regulation and power management of power units; general principles of increasing the efficiency of production, transmission and distribution of electric energy, as well as the issues of attracting the potential of energy technology sources of industrial enterprises to provide load schedules have been analyzed. The possibility of using the power complex NPP and the AB as a single object of regulation is substantiated. The authors’ priority scheme-parametric developments on the possibility of using the thermal power of the auxiliary boilers to increase the power of the steam turbine of a nuclear power plant unit equipped with WWER reactors unit during peak periods, as well as the enthalpy balance method for calculating heat flows, were applied. The surface area of the additional heater of the regeneration “deaerator – high pressure heaters” system and its cost were calculated. On the basis of calculations, it was shown that the additional power that can be obtained in the steam turbine of the NPP with a capacity of 1200 MW due to the use of heat of the modernized auxiliary boiler in the additional heat exchanger is 40.5 MW. The additional costs for the implementation of the heat recovery scheme of the auxiliary boiler at different prices for gas fuel and the resulting system effect were estimated in an enlarged way. Calculations have shown the acceptability of the payback period of the proposed modernization.

Derivation and Analysis of the Criterion for Onset of Density Wave Oscillation in Tubes and Channels With Riser

2009 ◽  
Author(s):  
Yu. Kornienko
Keyword(s):  
Natural Convection ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Flow Rate ◽  
Nuclear Power ◽  
Density Wave ◽  
Practical Interest ◽  
Analytical Criterion ◽  
Time Density ◽  
Oscillating Processes

In a number of nuclear power plant (NPP) applications questions arise as to appearance and development of oscillations in mass flow rate, enthalpy, coolant density in the channels with riser. Density waves oscillations (DWO) are one of the most common kind of self-oscillating processes in the parallel steam-generating channels system. It concerns inter-channel pulsations as well as oscillations in natural convection loops with a periodical space-time density change propagating together with the flow. That is why obtaining an analytical criterion giving the boundary for onset of DWO is of the notable theoretical and practical interest.

scholarly journals Nuclear power plant steam turbine—Modeling for model based control purposes

2017 ◽  
Vol 48 ◽  
pp. 491-515 ◽  
Author(s):  
Karol Kulkowski ◽  
Michał Grochowski ◽  
Kazimierz Duzinkiewicz ◽  
Anna Kobylarz
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Steam Turbine ◽  
Nuclear Power ◽  
Model Based Control ◽  
Model Based

Experimental Research on Steam Jetting and Condensation in Low Sub-Cooled Water

2018 ◽  
Author(s):  
Chunhui Dai ◽  
Mengran Liao ◽  
Qi Xiao ◽  
Jun Wu ◽  
Shaodan Li ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Nuclear Power ◽  
Great Influence ◽  
Low Frequency ◽  
Two Phase ◽  
Noise Characteristics

Steam submerged jetting is an important process in depressurization tank and condenser deaerator tank of nuclear power plant. As the steam contact the liquid water directly, some complicated behaviors such as strong turbulence and phase transition would happens. Especially when the sub-cooling degree is low, the condensation may cause vigorous pressure pulsation and radiation noise, which not only causes noise damage to workers but also affect the safety of the heat exchanger tubes bundle because of vibration transmission. An experiment is proposed to study the complex evolutionary behavior and vibration and noise characteristics of gas-water two-phase flow. The experimental results show that in the case of low subcooling, the mass flow rate of steam has a great influence on gas plume, and, as the mass flow rate increases, the main contribution frequency of noise is gradually increasing from low frequency to high frequency. The researches in this paper can provide the technical basis for the design of the deoxygenation system of condenser in onshore and ship nuclear power plant.

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