scholarly journals A planning method of gas turbine cogeneration systems. (1st report. An optimal operational planning model for gas turbine-waste heat boiler systems).

1988 ◽  
Vol 54 (499) ◽  
pp. 773-780 ◽  
Author(s):  
Koichi ITO ◽  
Ryohei YOKOYAMA ◽  
Yoshikazu MATSUMOTO ◽  
Shinsuke AKAGI
Keyword(s):  
Gas Turbine ◽  
Waste Heat ◽  
Planning Method ◽  
Operational Planning ◽  
Planning Model ◽  
Waste Heat Boiler

Influence of Fuel Cost on the Operation of a Gas Turbine-Waste Heat Boiler Cogeneration Plant

1990 ◽  
Vol 112 (1) ◽  
pp. 122-128 ◽  
Author(s):  
K. Ito ◽  
R. Yokoyama ◽  
S. Akagi ◽  
Y. Matsumoto
Keyword(s):  
Gas Turbine ◽  
Waste Heat ◽  
District Heating ◽  
Planning Method ◽  
Operational Cost ◽  
Cogeneration Plant ◽  
Fuel Cost ◽  
Waste Heat Boiler ◽  
Heating And Cooling

The influence of fuel cost on the operation is investigated for a gas turbine-waste heat boiler cogeneration plant by an optimal operational planning method. A planning method is first presented by which the operational policy of each piece of constituent equipment is determined so as to minimize the operational cost. Then, a case study is performed for a cogeneration plant used for district heating and cooling. Through the study, it is made clear how the optimal operational policy and the economic or energy conservative properties are influenced by the costs of purchased electric power and natural gas. It is also shown that the optimal operational policy is superior in economy as compared with other conventional ones.

Initial Operation and Analysis of a Cogeneration Laboratory

2002 ◽  
Author(s):  
Andrew Banta
Keyword(s):  
Performance Analysis ◽  
Gas Turbine ◽  
Waste Heat ◽  
Gas Turbine Engine ◽  
California State University ◽  
State University ◽  
Absorption Chiller ◽  
Waste Heat Boiler ◽  
Turbine Engine ◽  
Thermodynamic Performance

California State University, Sacramento, has constructed and put into service a stand alone cogeneration laboratory. The major components are a 75 kW gas turbine and generator, a waste heat boiler, and a 10 ton absorption chiller. Initial testing has been completed with efforts concentrating on the gas turbine engine and the absorption chiller. A two part thermodynamic performance analysis procedure has been developed to analyze the cogeneration plant. A first law energy balance around the gas turbine determines the heat into the engine. A Brayton cycle analysis of the gas turbine engine is then compared with the measured performance. While this engine is quite small, this method of analysis gives very consistent results and can be applied to engines of all sizes. Careful attention to details is required to obtain agreement between the calculated and measured outputs; typically they are within 10 to 15 percent. In the second part of the performance analysis experimental operation of the absorption chiller has been compared to that specified by the manufacturer and a theoretical cycle analysis. While the operation is within a few percent of that specified by the manufacturer, there are some interesting differences when it is compared to a theoretical analysis.

scholarly journals The Effects of Steam Injection in Combustion Air on the Thermal Efficiency and the Specific Work Output of a Stationary Gas Turbine Plant

1989 ◽  
Author(s):  
K. S. Varma ◽  
Asgharali I. Khandwawala ◽  
S. A. Asif
Keyword(s):  
Gas Turbine ◽  
Waste Heat ◽  
Steam Injection ◽  
Specific Work ◽  
Work Output ◽  
Waste Heat Boiler ◽  
Turbine Plant ◽  
Gas Turbine Plant ◽  
Cycle Efficiency ◽  
The Impact

In the present study a stationary open cycle gas turbine plant, including a thermal regenerator has been theoretically analyzed to assess the impact of steam addition in combustion air, on its performance. the effect of varying steam upto 15% air at different pressure ratios and turbine inlet temperatures have been reported. Mixing of steam in air results in higher values of cycle efficiency and increased specific work output, feasibility to generate steam needed for the purpose in a waste heat boiler have also been studied.

scholarly journals Performance Evaluation of a Combined Heat and Power Plant in the Niger Delta of Nigeria

2019 ◽  
Vol 4 (4) ◽  
pp. 17-23
Author(s):  
Barikuura Gbonee ◽  
Barinyima Nkoi ◽  
John Sodiki
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
Heat Balance ◽  
Niger Delta ◽  
Heat Recovery ◽  
Waste Heat ◽  
Combined Heat And Power ◽  
Steam Flow ◽  
Waste Heat Boiler

This research presents the performance assessment of a combined heat and power plant operating in the Niger Delta region of Nigeria. The main focus is to evaluate the performance parameters of the gas turbine unit and the waste heat recovery generator section of the combined-heat-and-power plant. Data were gathered from the manufacturer’s manual, field and panel operator’s log sheets and the human machine interface (HMI) monitoring screen. The standard thermodynamic equations were used to determine the appropriate parameters of the various components of the gas turbine power plant as well as that of the heat exchangers of the heat recovery steam generator (HRSG). The outcome of all analysis indicated that for every 10C rise in ambient temperature of the compressor air intake there is an average of 0.146MW drop in the gas turbine power output, a fall of about 0.176% in the thermal efficiency of the plant, a decrease of about 2.46% in the combined-cycle thermal efficiency and an increase of about 0.0323 Kg/Kwh in specific fuel consumption of the plant. In evaluating the performance of the Waste Heat Boiler (WHB), the principle of heat balance above pinch was applied to a single steam pressure HRSG exhaust gas/steam temperature profile versus exhaust heat flow. Hence, the evaporative capacity (steam flow) of the HRSG was computed from the total heat transfer in the super-heaters and evaporator tubes using heat balance above pinch. The analysis revealed that the equivalent evaporation, evaporative capacity (steam flow) and the HRSG thermal efficiency depends on the heat exchanger’s heat load and its effective maintenance.

A New Approach to the Design of Combined Cycle Plants

1992 ◽  
Author(s):  
Ir. Ted Wiekmeijer
Keyword(s):  
Gas Turbine ◽  
Waste Heat ◽  
Combined Cycle ◽  
Waste Heat Boiler ◽  
New Developments ◽  
New Approach ◽  
System A ◽  
New Development ◽  
Asme Paper

The paper will deal with new developments on basis of the ideas, laid down in ASME paper 90-GT-180, presented at the Brussels Conference. In this former paper a combination of incinerators and cogen systems was described. New development show, that some of these ideas can also be used in cogen plants, in which all steam is raised and superheated in a waste heat boiler behind a high grade fuel fired gas turbine (natural gas or equivalent). This paper will deal give a description of the new system. A comparison will be made with conventional cogen systems, comprising of a gas turbine, a dual pressure non-fired waste heat boiler and a condensing steam turbine. On basis of a particular case study both the technical and financial performances will be compared with each other.

Steam-Injected Gas Turbine Integrated With a Self-Production Demineralized Water Thermal Plant

1988 ◽  
Vol 110 (1) ◽  
pp. 8-16 ◽  
Author(s):  
G. Cerri ◽  
G. Arsuffi
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat ◽  
Pure Water ◽  
Cycle Performance ◽  
Waste Heat Boiler ◽  
Demineralized Water ◽  
Exhaust Heat ◽  
Self Production ◽  
Gas Turbine Cycle

A simple steam-injected gas turbine cycle equipped with an exhaust heat recovery section is analyzed. The heat recovery section consists of a waste heat boiler, which produces the steam to be injected into the combustion chamber, and a self-production demineralized water plant based on a distillation process. This plant supplies the pure water needed in the mixed steam-gas cycle. Desalination plant requirements are investigated and heat consumption for producing distilled water is given. Overall steam-gas turbine cycle performance and feasibility of desalting plants are investigated in a firing temperature range from 1000.°C to 1400.°C for various compressor pressure and steam-to-air injection ratios. An example is reported.

The Integrated Approach to a Gas Turbine Topping Cycle Cogeneration System

1984 ◽  
Vol 106 (4) ◽  
pp. 731-736 ◽  
Author(s):  
H. Leibowitz ◽  
E. Tabb
Keyword(s):  
Gas Turbine ◽  
System Integration ◽  
Waste Heat ◽  
Natural Circulation ◽  
Integrated Approach ◽  
Steam Injection ◽  
Saturated Steam ◽  
Waste Heat Boiler ◽  
Free Standing ◽  
Cogeneration System

Under Gas Research Institute (GRI) sponsorship, a new gas turbine cogeneration system was developed by Mechanical Technology, Inc., (MTI) for installation at a General Motors plant in early 1985. Specific emphasis was placed on system integration. A single, prime-reliable drive train and a single control center replace a wide assortment of nonintegrated, free-standing power drives and control centers. On-line availability, installation costs, and overall user acceptance are improved. The cogeneration set produces 3 MWe and 8,860 kg/hr (19,500 lb/hr) of 1825 kPa (250 psig) saturated steam using an Allison 501-KH gas turbine and a natural circulation waste heat boiler. The system is designed for multifuel operation using either natural gas or distillate oil. A steam injection feature is employed to increase output to 4 MWe when process steam demand diminishes. The system is prepackaged, skid mounted, and delivered in four modules: one each for the machinery, duct burner, waste heat boiler, and controls.

Dynamic Modeling of a Combined-Cycle Plant

1989 ◽  
Author(s):  
K. S. Ahluwalia ◽  
R. Domenichini
Keyword(s):  
Gas Turbine ◽  
Dynamic Modeling ◽  
Waste Heat ◽  
Control Strategies ◽  
Transient Behavior ◽  
Combined Cycle ◽  
Design Tool ◽  
Waste Heat Boiler ◽  
Combined Cycle Plant ◽  
Operating Constraints

Greater use is being made of dynamic simulation of energy systems as a design tool for selecting control strategies and establishing operating procedures. This paper discusses the dynamic modeling of a gas-fired combined-cycle power plant with a gas turbine, a steam turbine, and an alternator — all rotating on a common shaft. A waste-heat boiler produces steam at two pressures using heat from the gas turbine flue gas. The transient behavior of the system predicted by the model for various upset situations appears physically reasonable and satisfactory for the operating constraints.

A Neural Network Simulator of a Gas Turbine With a Waste Heat Recovery Section

2000 ◽  
Author(s):  
C. Boccaletti ◽  
G. Cerri ◽  
B. Seyedan
Keyword(s):  
Neural Network ◽  
Gas Turbine ◽  
Waste Heat ◽  
Direct Method ◽  
Computing Time ◽  
Operating Conditions ◽  
Network Simulator ◽  
Back Propagation Algorithm ◽  
Waste Heat Boiler ◽  
Computing Technique

The objective of the paper is to assess the feasibility of the neural network (NN) approach in power plant process evaluations. A “feedforward” technique with a back propagation algorithm was applied to a gas turbine equipped with waste heat boiler and water heater. Data from physical or empirical simulators of plant components were used to train such a NN model. Results obtained using a conventional computing technique are compared with those of the direct method based on a NN approach. The NN simulator was able to perform calculations in a really short computing time with a high degree of accuracy, predicting various steady-state operating conditions on the basis of inputs that can be easily obtained with existing plant instrumentation. The optimization of NN parameters like number of hidden neurons, training sample size and learning rate is discussed in the paper.

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