scholarly journals Layout and Present Status of the Closed-Cycle Helium Turbine Plant Oberhausen

1974 ◽  
Author(s):  
K. Bammert ◽  
G. Deuster
Keyword(s):  
Power Plant ◽  
Heat Exchangers ◽  
Thermal Power ◽  
Closed Cycle ◽  
Power Station ◽  
Turbine Plant ◽  
Working Medium ◽  
Circuit Components ◽  
The One ◽  
Under Construction

The Oberhausen gas turbine plant now under construction is designed as a fossil-fired heating power station to produce a net electrical output at terminals of 50 MW. Helium as a working medium is employed for the first time in a closed-cycle industrial power plant system. A report is given on the layout of the circuit parameters, on the physical size of the turbomachines and heat exchangers as well as on the design of the gas-fired helium heater. Moreover, the arrangement of circuit components is discussed. The Oberhausen plant was projected under the aspect of a commercial thermal power station. Besides, the plant is of considerable importance concerning the German program for developing high-temperature reactors with helium turbines (HHT). Its significance is, on the one hand, based on the fact that the turbomachines and heat exchangers are constructed in many details to meet the requirements which occur in nuclear helium turbines of high output. Some of these components closely resemble dimensions and stresses as in a HHT-power plant. On the other hand the operational behavior of component parts will be tested under real conditions of a commercial power plant.

scholarly journals Study and evaluation the air pollution around the thermal power plant of Zebadiah city, Wassit province, Iraq

2018 ◽  
Vol 7 (4) ◽  
pp. 2494
Author(s):  
Abdulkhaleq Kamal Mahmood ◽  
Ali Abdulkhaleq Kamal
Keyword(s):  
Power Plant ◽  
Sulfur Dioxide ◽  
Nitrogen Oxide ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Generation Process ◽  
Confined Space ◽  
Power Station ◽  
Gas Concentration ◽  
Prevailing Wind Direction

This study focused on gaseous pollution caused by exhaust gas from AL-Zubaydiah thermal power plant. Study gases included sulfur dioxide (SO2), nitrogen oxide (NO), carbon oxide (CO) and hydrocarbon (HC). The concentration of gas measurement is conducted during six months from January until June 2017. Nova 600 series portable devise and G450 confined space gas detector was used for measuring gas concentration, which emitted from the chimney of the thermal power station with an interval of 100m and into the path of smoke for a distance of 1400 m. The prevailing wind direction and temperature were taken into consideration during the study and their impact on the gas distribution. Four readings have been taken in each station during each month for all gases under study. The results showed that less gas concentrations were near the power station and then getting more gas concentration away from the station and higher concentrations are obtained at a distance of 900 m from the power station at ground level. Results indicated that sulfur dioxide concentrations recorded were higher than allowed in the Iraqi and American standards in most locations around the station. The highest concentration recorded at 900 m from the power station with value 597.3968 μg/m3, which is higher than the limitation of Iraqi and international specifications (150 μg/m3). This high concentration of SO2 is due to the crude oil from the Ahdab field with high rates of Sulphur that used as fuel in the generation process. These high concentrations of sulfur dioxide cause problems on the growth of plants and human health and viability of the soil in the coming years. Nitrogen oxide gas concentrations also were high and outside the upper limits allowed and were worth 131.38 μg/m3. The rest of the gas concentration (CO and HC) were acceptable and within the Iraqi standard. To preserve the environment in the region and within the limits of the allowed values globally requires a search for another source of fuel with a low percentage of sulfur and using modern technology for burning to reduce emissions of nitrogen oxides.  

scholarly journals Experimental research on the domestic ORC micro power plant with a commercial biomass boiler

2018 ◽  
Vol 46 ◽  
pp. 00021 ◽  
Author(s):  
Tomasz Kaczmarczyk ◽  
Grzegorz Żywica ◽  
Eugeniusz Inhatowicz
Keyword(s):  
Power Plant ◽  
Experimental Research ◽  
High Speed ◽  
Thermal Power ◽  
Operating Characteristics ◽  
Wood Pellets ◽  
Biomass Boiler ◽  
Working Medium ◽  
Thermodynamic Conditions ◽  
Micro Power

The purpose of the work was to experimentally evaluate the operation of the domestic ORC micro power plant that uses a commercial biomass boiler fueled with wood pellets. The boiler, with a maximum thermal power output of 45kWt, uses a heating jacket and thermal oil as a working medium. The prototypical domestic ORC micro power plant was equipped with a multistage radial-flow microturbine that can generate electricity (2.5kWe at a rotational speed of 24,000 rpm). The microturbine is a key component of the turbogenerator, which was manufactured in oilfree technology. The turbogenerator’s high-speed bearings are lubricated with the low-boiling medium’s vapour. The HFE7100 fluid was used as a working medium in the ORC installation. The paper discusses the thermodynamic conditions to be met for effective operation of the boiler and the results of experimental research. The operating characteristics of the ORC installation and the biomass boiler were presented. Problems that occurred while testing the micro-cogeneration power plant with the boiler and their impact on the electric and thermal efficiency of the cycle were discussed.

Dual Receiver Concept for Solar Towers up to 100 MW

2005 ◽  
Vol 128 (3) ◽  
pp. 293-301 ◽  
Author(s):  
M. Eck ◽  
R. Buck ◽  
M. Wittmann
Keyword(s):  
Power Plant ◽  
Power Consumption ◽  
Steam Generator ◽  
Thermal Efficiency ◽  
Heat Exchangers ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Solar Thermal Power ◽  
Hot Air ◽  
Central Receiver

The dual receiver concept presented in this paper improves the adaptation of the central receiver to the steam cycle in a solar thermal power plant. By combination of an open volumetric air heater and a tubular evaporator the dual receiver concept profits from the advantages of these two concepts while their characteristic problems are avoided. The water is evaporated directly in the tubular steam generator; preheating and superheating are done in heat exchangers by using the hot air from the volumetric receiver. This paper presents a concept study that extends previous work on the 10MWel level (Buck et al., 2004, “Dual Receiver Concept for Solar Towers,” Proc. 12th Solar PACES Int. Symposium, Oct. 6–8, Oaxaca, Mexico) to a level of 100MWel, which is the expected power range of future plants. The results confirm the benefits of the new concept, resulting from higher thermal efficiency of the receiver and lower parasitic power consumption. The annual mean efficiency is increased from 13% to 16%. Advantageous are also the reduced thermal loads in the receiver components.

Tube Stresses in the Radiation Part of Solar Receivers and of Conventionally Fired Heaters

1981 ◽  
Author(s):  
K. Bammert ◽  
P. Seifert
Keyword(s):  
Heat Flux ◽  
Power Plant ◽  
Gas Turbine ◽  
Stress Pattern ◽  
Plastic Behavior ◽  
Solar Power Plant ◽  
Closed Cycle ◽  
Tube Material ◽  
Mechanical Loads ◽  
Working Medium

The tubes for the receiver of a solar power plant are designed taking into account thermal and mechanical loads. The receiver transfers 60 MW of heat to the working medium of a closed cycle gas turbine, the medium being air. It is shown how the stress pattern in the tubes are influenced by the distribution of the locally absorbed heat flux, assuming linearly elastic deformation of the tube material. Criteria for the influence of the partially plastic behavior of the tubes are discussed for different distributions of the intensity of the absorbed heat flux.

Ammonia Bottoming Cycle Development at Electricité de France for Nuclear Power Plants

1981 ◽  
Author(s):  
J. Fleury
Keyword(s):  
Power Plant ◽  
Heat Exchangers ◽  
Nuclear Power ◽  
Power Plants ◽  
Economic Conditions ◽  
Air Cooling ◽  
Test Results ◽  
Power Station ◽  
Major Benefit ◽  
Dry Cooling

An ammonia bottoming cycle is under active development at Electricité de France. To be implemented in a nuclear power plant downstream from the steam cycle, shortened for this application, its purpose is to make it possible to practice air cooling in satisfactory economic conditions. After an analysis of the main parameters of the bottoming cycle (H2O/NH3) (i.e., back pressure and temperature differences in the heat exchangers) its advantages are enumerated: in addition to those the dry cooling concept, the major benefit consists of the fact that the bottoming cycle makes use of low atmospheric temperatures in winter, producing a significant increase in the power output, just when it is most needed in many geographic locations. Emphasis is placed on the experimental work performed on E.D.F. test facilities and the construction of a 20-MWe demonstration bottoming cycle power plant at Gennevilliers power station. A brief account is given of test results and experimental programs.

scholarly journals Analysis of the Applicability of the Parabolic Trough Solar Thermal Power Plants in the Locations with a Temperate Climate

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3003
Author(s):  
Tomasz Janusz Teleszewski ◽  
Mirosław Żukowski ◽  
Dorota Anna Krawczyk ◽  
Antonio Rodero
Keyword(s):  
Energy Balance ◽  
Power Plant ◽  
Thermal Power Station ◽  
Solar Collector ◽  
Thermal Power ◽  
Solar Thermal ◽  
Simplified Model ◽  
Temperate Climate ◽  
Power Station ◽  
Solar Thermal Power

Currently, intensive work is underway in Poland to increase the share of renewable energy sources in the overall energy balance. Therefore, this paper presents the possibilities of using concentrated solar power in zones with a temperate climate. A simplified model based on the energy balance in the solar collectors considering the main operating parameters of the typical solar power plant was developed. It should be noted here that the model does not take into account issues related to heat accumulation and electricity generation in a Solar Thermal Power Station. The simulation of forced convection inside the solar collector absorber was additionally included in the calculations to improve its accuracy. The model was verified using actual heat measurements at the outlet of the parabolic collector installation at a Solar Thermal Power Station located in the south of Spain. The heat generated by a similar solar collector system in a selected region with a temperate climate, the city of Bialystok (north-eastern Poland, geographic coordinates: 53°08′07″N 23°08′44″E) was determined by the developed simplified model for different months of the year. Based on the results of the analysis, it was found that the energy obtained from the same area of concentrated solar collectors located near Bialystok is eight times lower compared to the location in Cordoba depending on the variant of the power plant operation.

scholarly journals Maintenance Strategy Optimization of a Coal-Fired Power Plant Cooling Tower through Generalized Stochastic Petri Nets

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1951 ◽  
Author(s):  
Arthur H.A. Melani ◽  
Carlos A. Murad ◽  
Adherbal Caminada Netto ◽  
Gilberto F.M. Souza ◽  
Silvio I. Nabeta
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Cooling Tower ◽  
Thermal Power ◽  
Stochastic Petri Nets ◽  
Optimal Size ◽  
Daunting Task ◽  
And Performance ◽  
The One ◽  
Power Plant Cooling

Determining the ideal size of maintenance staff is a daunting task, especially in the operation of large and complex mechanical systems such as thermal power plants. On the one hand, a significant investment in maintenance is necessary to maintain the availability of the system. On the other hand, it can significantly affect the profit of the plant. Several mathematical modeling techniques have been used in many different ways to predict and improve the availability and reliability of such systems. This work uses a modeling tool called generalized stochastic Petri net (GSPN) in a new way, aiming to determine the effect that the number of maintenance teams has on the availability and performance of a coal-fired power plant cooling tower. The results obtained through the model are confronted with a thermodynamic analysis of the cooling tower that shows the influence of this system’s performance on the efficiency of the power plant. Thus, it is possible to determine the optimal size of the repair team in order to maximize the plant’s performance with the least possible investment in maintenance personnel.

Twenty-Five Years of Operating Experience With the Coal-Fired, Closed-Cycle Gas Turbine Cogeneration Plant at Coburg

1983 ◽  
Vol 105 (4) ◽  
pp. 806-815 ◽  
Author(s):  
K. Bammert
Keyword(s):  
Gas Turbine ◽  
Operating Experience ◽  
Public Utility ◽  
West Germany ◽  
Closed Cycle ◽  
Power Station ◽  
Excellent Performance ◽  
Technical Literature ◽  
Heating Capacity ◽  
Working Medium

The only commercially running closed-cycle gas turbine in the world delivering electricity as well as heat to a public utility and a heating network, is the heat and power station in Coburg, West Germany. The plant is fired exclusively with pulverized coal and uses air as the working medium. It has a maximum continuous electric power output of 6.6 MW into the grid and up to 16 MW of direct heating capacity into the town’s heating network. The plant has accumulated 150,000 operating hours to date (approximately 7000 hrs per year); it is scheduled to remain in service during the following years due to its excellent performance. Since relatively little has been published about the plant in the technical literature, a report about its design and operating experience is presented here.

Design of Commercial Solar Tower Systems: Utilization of Solar Induced Convective Flows for Power Generation

Solar Energy ◽  
2003 ◽  
Author(s):  
Jo¨rg Schlaich ◽  
Rudolf Bergermann ◽  
Wolfgang Schiel ◽  
Gerhard Weinrebe
Keyword(s):  
Power Plant ◽  
Thermal Power ◽  
Small Scale ◽  
Economic Data ◽  
Solar Chimney ◽  
Convective Flows ◽  
Solar Thermal Power ◽  
Solar Air Collector ◽  
Technical Issues ◽  
The One

An updraft Solar Tower power plant — sometimes also called ‘solar chimney’ — is a solar thermal power plant utilizing a combination of solar air collector and central updraft tube to generate a solar induced convective flow which drives pressure staged turbines to generate electricity. In the paper we first describe the functional principle of the Solar Tower and give some results from designing, building and operating a small scale prototype in Spain. Then future commercial Solar Tower systems like the one being planned for Australia are described. We present technical issues and basic economic data.

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