Optimization of a moisture separator reheater

Li, Guijing; Yan, Changqi; Wang, Jianjun

doi:10.1016/j.anucene.2014.04.030

Cited by 11 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, many features of the medium flow processes, heat and mass transfer in them had not been sufficiently studied [7][8][9][10]. They were investigated only on smallscale models and did not take into account the scale factor, the geometry specifics of the systems and moisture separation and reheating processes [11][12][13][14][15][16][17]. Natural designers' tendency to maximize the devices' compactness (minimum metal capacity) made the problem even more complex.…”

Section: Some Thermal-hydraulic Processes Features In Msr Revealed During Their Operationmentioning

confidence: 99%

The new ways to increase the efficiency of thermal hydraulic processes in systems of separation and reheating of NPP wet steam turbines

et al. 2020

View full text Add to dashboard Cite

Systems of moisture separators - reheaters (SMSR) were created simultaneously with the powerful turbines development of nuclear power plants operating on a wet steam from the early 60s of the 20th century. This lengthy experience made the opportunity to identify the moisture separators - reheaters (MSRs) drawbacks, to determine the objectives for their design and computation improvement in order to increase thermodynamic efficiency, MSR devices and MSR systems reliability in general. Based on maintenance experience and results of our and other researchers’ model and field studies this article discusses potential ways of further development and improvement, taking into consideration both SMSR components (separation and reheating) under conditions of their flow in one apparatus.

show abstract

Section: Some Thermal-hydraulic Processes Features In Msr Revealed During Their Operationmentioning

confidence: 99%

The new ways to increase the efficiency of thermal hydraulic processes in systems of separation and reheating of NPP wet steam turbines

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Unlike thermal power units, a moisture separation reheater (MSR) is a special component in nuclear power plants, between the high-pressure turbine and low-pressure turbine, removing water and heating it to increase the efficiency and diminish the risk of erosion or corrosion damage to the components connected downstream of the MSR [1]. Since the actual operating data of nuclear power units are difficult to obtain and experiments are not easily carried out, it is of great significance to analyse the operating characteristics of MSR with the help of simulation for the economical and reliable operation of nuclear power units.…”

Section: Introductionmentioning

confidence: 99%

Modelling and fault analysis of APROS-based moisture separation reheater

Lu,

Xing,

Zhu

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

A modular modelling approach was adopted to build a dynamic simulation model of the moisture separation reheater on a high-precision APROS real-time platform to investigate the dynamic operating characteristics of the moisture separation reheater. The model was subjected to steady-state and step dynamic tests at different loads. The results show that the established model can correctly reflect the steam flow and heat transfer properties and can meet the requirements of the simulation. Using the one-dimensional distribution of the model, the effect of a small breakage failure in the heat exchanger bundle was further investigated. The results showed that the heat transfer tube bundle had leaks, reducing the heat transfer capacity and affecting the quality of the steam used to work in the low-pressure turbine. Simultaneously, the effect on steam outlet parameters increased with the degree of leakage in the heat exchanger.

show abstract

“…Identification of the sections of 0.4 kV power Moisture separators and steam reheaters (MSR) are widely used at Russian nuclear power plants (NPP) with VVER, RBMK reactor types [1][2][3]. These installations process steam between the high pressure stage of the turbine the low pressure stage.…”

Section: Introductionmentioning

confidence: 99%

Steam reheater with helical tube bundle for wet steam turbine

et al. 2020

View full text Add to dashboard Cite

Since steam heat exchangers, used at steam cycle of Russian nuclear power stations, were designed while the knowledge about the separation and the heat exchange processes was limited, deviations between its empirical and theoretical characteristics occur. This limitation also determined application of heating pipes with simple straight shape rather than curved. This study explores a steam heat exchanger with helical heating pipes. It was shown that the model may work stably within the range of parameters, simulating work conditions of the moisture separator and steam reheater at Leningrad nuclear power plant. The experiment included processing of pure water steam as well as mixture of steam and nitrogen. It was obtained a relationship between empirical the heat transfer coefficient and the steam mass flow rate. It was noted that presence of incondensable gas does not affect significantly the heat transfer from the coils, processing high pressure steam.

show abstract

Optimization of a moisture separator reheater

Cited by 11 publications

References 12 publications

The new ways to increase the efficiency of thermal hydraulic processes in systems of separation and reheating of NPP wet steam turbines

The new ways to increase the efficiency of thermal hydraulic processes in systems of separation and reheating of NPP wet steam turbines

Modelling and fault analysis of APROS-based moisture separation reheater

Steam reheater with helical tube bundle for wet steam turbine

Contact Info

Product

Resources

About