NDLI: Influence of the reheat temperature on the efficiency of the wet-steam turbines of thermal power plants that operate under variable conditions

Content Provider	Springer Nature Link
Author	Tarelin, A. A.
Copyright Year	2017
Abstract	A brief analysis of the existing methods for controlling the operating conditions of the turbine units that operate at variable loads is presented. In practice, the outdated rule of operation is most frequently used that states that the higher the parameters of the live and reheat steam and the lower the condenser pressure are, the higher is the efficiency of the turbine unit. However, in the technical literature, there is sufficiently substantiated evidence that this approach is not always correct, especially under low loads. This applies to both the regulation of the initial and final pressure and reheat temperature t $_{r}$. In the article, particular stress is laid on the controllable parameter t $_{r}$, the effect of which in the operational practices, according to the results of the analysis, is underestimated. The causes are considered that constrain more effective use of reheat temperature t $_{r}$ as a process variable. The results of field trials to investigate the influence of t $_{r}$ on the efficiency of turbine units of various capacities, viz., of 210, 250, 300, and 325 MW, during operation at varying loads are presented. It is shown that a decrease in t $_{r}$ to an optimal value of 10–30°C, depending on the load and the condenser pressure, increases the thermal efficiency by 1–2%. The following general pattern has been set: the lower the load, the lower the optimal reheat temperature. The main causes and factors that result in more efficient use of the heat phase transition in the steam path of the low-pressure cylinder and increased efficiency of the unit under rational choice of the reheat temperature are studied.
Starting Page	295
Ending Page	300
Page Count	6
File Format	PDF
ISSN	00406015
Journal	Thermal Engineering
Volume Number	64
Issue Number	4
e-ISSN	15556301
Language	English
Publisher	Pleiades Publishing
Publisher Date	2017-03-24
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	steam turbine variable operating conditions reheat nonequilibrium efficiency Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Nuclear Energy and Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Electrization of a wet steam flow and its influence on reliability and efficiency of turbines

Process-circuit and layout solutions for steam-turbine units and performance efficiency of thermal power plants

Combined cycle plants: Yesterday, today, and tomorrow (review)

Substantiation of the cogeneration turbine unit selection for reconstruction of power units with a T-250/300-23.5 turbine

Operational diagnostics of thermal state and efficiency of steam turbines of TPP and NPP

Steam turbines of the Ural Turbine Works for combined-cycle plants

Evaluating the thermodynamic efficiency of hydrogen cycles at wet-steam nuclear power stations

Steam turbines of the Ural Turbine Works for advanced projects of combined-cycle plants

Controlling the startup modes of cogeneration steam turbines operating as part of combined-cycle power plants

Influence of the reheat temperature on the efficiency of the wet-steam turbines of thermal power plants that operate under variable conditions

Similar Documents

Electrization of a wet steam flow and its influence on reliability and efficiency of turbines

Process-circuit and layout solutions for steam-turbine units and performance efficiency of thermal power plants

Combined cycle plants: Yesterday, today, and tomorrow (review)

Substantiation of the cogeneration turbine unit selection for reconstruction of power units with a T-250/300-23.5 turbine

Operational diagnostics of thermal state and efficiency of steam turbines of TPP and NPP

Steam turbines of the Ural Turbine Works for combined-cycle plants

Evaluating the thermodynamic efficiency of hydrogen cycles at wet-steam nuclear power stations

Steam turbines of the Ural Turbine Works for advanced projects of combined-cycle plants

Controlling the startup modes of cogeneration steam turbines operating as part of combined-cycle power plants

Influence of the reheat temperature on the efficiency of the wet-steam turbines of thermal power plants that operate under variable conditions