Performance Assessment of a Recuperative Helium Gas Turbine System

2014 ◽  
pp. 251-266 ◽  
Author(s):  
Rami Salah El-Emam ◽  
Ibrahim Dincer
Keyword(s):  
Performance Assessment ◽  
Gas Turbine ◽  
Helium Gas

Design and Economics of the HTGR-GT Power Plant by JAERI

2002 ◽  
Author(s):  
Yasushi Muto ◽  
Shintaro Ishiyama ◽  
Shusaku Shiozawa ◽  
Masanori Tanihira ◽  
Yasuyuki Miyoshi ◽  
...  
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Cost Estimation ◽  
Science And Technology ◽  
Ministry Of Education ◽  
Sports Science ◽  
System Type ◽  
Helium Gas ◽  
Generation Cost ◽  
Education Culture

This paper describes the conceptual design and cost estimation of a 600MW(t) HTGR-GT power plant, which has been completed in the framework of the HTGR-GT feasibility study project in the duration of FY 1996 to FY 2000. The project is assigned to JAERI by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) (former Science and Technology Agency) in Japan. The inlet and outlet gas temperatures in the reactor are 460°C and 850°C, respectively. Helium gas pressure is 6MPa. The gas turbine system type is an intercooled recuperative direct cycle. Designs of reactor and gas turbine are presented. The main feature of the plant is a relatively large 600 MW(t) HTGR, horizontal single shaft helium turbine and divided power conversion vessel, that is, a turbomachine vessel and heat exchanger one. Their main specifications and drawings are presented. As a result of cost estimation, an economically attractive construction cost and a power generation cost have been obtained.

Description of an Operating Closed Cycle: Helium Gas Turbine

1963 ◽  
Author(s):  
James K. La Fleur
Keyword(s):  
Gas Turbine ◽  
Working Fluid ◽  
Refrigeration Cycle ◽  
Preliminary Design ◽  
Closed Cycle ◽  
Helium Gas ◽  
Compressor Inlet ◽  
Last Stage ◽  
Low Temperature Refrigeration ◽  
Made In

In May of 1960 La Fleur Enterprises, later to become The La Fleur Corporation, undertook the design of a closed-cycle gas turbine utilizing helium as a working fluid. The useful output of this machine was to be in the form of a stream of helium bled from the last stage of the compressor. This stream was to be used in a low-temperature refrigeration cycle (not described in this paper) and would be returned to the compressor inlet at approximately ambient temperature and at compressor-inlet pressure. The design of this machine was completed by the end of 1960 and construction was initiated immediately. The unit was completed and initial tests were made in the Spring of 1962. This paper covers the design philosophy as it affected the conceptual and preliminary design phases of the project and describes briefly the design of the various components. Photographs of these components and a flow schematic are included.

scholarly journals Comparison of Various Fluidized Bed Combustor-Gas Turbine Systems

1985 ◽  
Author(s):  
Arthur P. Fraas
Keyword(s):  
Gas Turbine ◽  
Fluidized Bed ◽  
Thermal Efficiency ◽  
Combustion Efficiency ◽  
Capital Cost ◽  
Inlet Temperature ◽  
Extensive Experience ◽  
Helium Gas ◽  
Steam Plant ◽  
Fluidized Bed Combustor

Pressurizing a fluidized bed combustor with a gas turbine greatly improves both sulfur retention and combustion efficiency. Operating the gas turbine with a high inlet temperature (e.g. 900°C) would yield a thermal efficiency about four points higher than for an atmospheric furnace, but 40 y of experience have failed to solve problems with flyash erosion and deposits. Extensive experience such as that with fluidized bed catalytic cracking units indicates that the gas turbine blade erosion and deposit problems can be handled by dropping the turbine inlet temperature below 400°C where the turbine delivers just enough power to drive the compressor. The resulting thermal efficiency is about half a point higher than for an atmospheric bed, and the capital cost of the FBC-related components is about 40% lower. While a closed-cycle helium gas turbine might be used rather than a steam cycle, the thermal efficiency would be about four points lower and the capital cost of the FBC-related components would be roughly twice that for the corresponding steam plant.

scholarly journals Performance Assessment of Gas Turbine Power Plants

2020 ◽  
Vol 5 (6) ◽  
pp. 265-270
Author(s):  
Ebigenibo Genuine Saturday ◽  
Tamunobelema Justice Okumgba
Keyword(s):  
Performance Assessment ◽  
Gas Turbine ◽  
Power Plants

scholarly journals A REVIEW OF HELIUM GAS TURBINE TECHNOLOGY FOR HIGH-TEMPERATURE GAS-COOLED REACTORS

2007 ◽  
Vol 39 (1) ◽  
pp. 21-30 ◽  
Author(s):  
Hee-Cheon No ◽  
Ji-Hwan Kim ◽  
Hyeun-Min Kim
Keyword(s):  
High Temperature ◽  
Gas Turbine ◽  
Helium Gas ◽  
High Temperature Gas

Study on Off-Design Steady State Performances of Helium Gas Turbocompressor for HTGR-GT

2006 ◽  
Author(s):  
Qisen Ren ◽  
Xiaoyong Yang ◽  
Zhiyong Huang ◽  
Jie Wang
Keyword(s):  
Steady State ◽  
High Temperature ◽  
Electric Power ◽  
Gas Turbine ◽  
Thermal Power ◽  
Power Adjustment ◽  
Partial Load ◽  
Helium Gas ◽  
Gas Turbine Cycle ◽  
High Temperature Gas

The high temperature gas-cooled reactor (HTGR) coupled with direct gas turbine cycle is a promising concept in the future of nuclear power development. Both helium gas turbine and compressor are key components in the cycle. Under normal conditions, the mode of power adjustment is to control total helium mass in the primary loop using gas storage vessels. Meanwhile, thermal power of reactor core is regulated. This article analyzes off-design performances of helium gas turbine and compressors for high temperature gas-cooled reactor with gas turbine cycle (HTGR-GT) at steady state level of electric power adjustment. Moreover, performances of the cycle were simply discussed. Results show that the expansion ratio of turbine decreases as electric power reduces but the compression ratios of compressors increase, efficiencies of both turbine and compressors decrease to some extent. Thermal power does not vary consistently with electric power, the difference between these two powers increases as electric power reduces. As a result of much thermal energy dissipated in the temperature modulator set at core inlet, thermal efficiency of the cycle has a widely reduction under partial load conditions.

scholarly journals An Empirical Approach to the Preliminary Design of a Closed Cycle Gas Turbine

1998 ◽  
Author(s):  
R. P. op het Veld ◽  
J. P. van Buijtenen
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
High Speed ◽  
State Of The Art ◽  
Preliminary Design ◽  
Power Turbine ◽  
Helium Gas ◽  
Source State ◽  
High Temperature Reactor ◽  
The Cost

This paper investigates the layout and achievable efficiencies of rotating components of a Helium gas turbine. This is done by making a preliminary design of the compressor and turbine needed for the power conversion in a combined heat and power plant with a 40 MWth nuclear high temperature reactor as a heat source. State of the art efficiency values of air breathing gas turbines are used for the first calculations. The efficiency level is corrected by comparing various dimensionless data of the Helium turbomachine with an air gas turbine of similar dimensions. A single shaft configuration with a high speed axial turbine will give highest performance and simple construction. If a generator has to be driven at a conventional speed, a free power turbine configuration must be chosen. The choice of the configuration depends among others on the cost and availability of the asynchrone generator and frequency convertor.

Exergy Analysis and Performance Assessment for Different Recuperative Thermodynamic Cycles for Gas Turbine Applications

2018 ◽  
Vol 140 (7) ◽  
Author(s):  
Christina Salpingidou ◽  
Dimitrios Misirlis ◽  
Zinon Vlahostergios ◽  
Stefan Donnerhack ◽  
Michael Flouros ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Performance Assessment ◽  
Gas Turbine ◽  
Exergy Analysis ◽  
Thermodynamic Cycles ◽  
Power Turbine ◽  
Wide Range ◽  
Exergetic Analysis ◽  
And Performance ◽  
Aero Engines

This work presents an exergy analysis and performance assessment of three recuperative thermodynamic cycles for gas turbine applications. The first configuration is the conventional recuperative (CR) cycle in which a heat exchanger is placed after the power turbine (PT). In the second configuration, referred as alternative recuperative (AR) cycle, a heat exchanger is placed between the high pressure and the PT, while in the third configuration, referred as staged heat recovery (SHR) cycle, two heat exchangers are employed, the primary one between the high and PTs and the secondary at the exhaust, downstream the PT. The first part of this work is focused on a detailed exergetic analysis on conceptual gas turbine cycles for a wide range of heat exchanger performance parameters. The second part focuses on the implementation of recuperative cycles in aero engines, focused on the MTU-developed intercooled recuperative aero (IRA) engine concept, which is based on a conventional recuperation approach. Exergy analysis is applied on specifically developed IRA engine derivatives using both alternative and SHR recuperation concepts to quantify energy exploitation and exergy destruction per cycle and component, showing the amount of exergy that is left unexploited, which should be targeted in future optimization actions.

Direct implementation of an axial-flow helium gas turbine tool in a system analysis tool for HTGRs

2008 ◽  
Vol 238 (12) ◽  
pp. 3379-3388 ◽  
Author(s):  
Ji Hwan Kim ◽  
Hee Cheon No ◽  
Hyeun Min Kim ◽  
Hong Sik Lim
Keyword(s):  
Gas Turbine ◽  
System Analysis ◽  
Axial Flow ◽  
Analysis Tool ◽  
Helium Gas ◽  
Direct Implementation
Sign in / Sign up

Export Citation Format

Share Document