Steam Generators Articles
-
More transparency needed on solar field cost and performance
Novatec Biosol will be participating actively in the 4th International Concentrated Solar Thermal Power Summit (Nov 15-17) as an exhibitor and sponsor. The rise of the Fresnel system to the hierarchy of CSP is one of the issues that will be actively discussed at this industry flagship event with a 700 strong attendance. CSP Today: What are the next steps to achieving greater cost ...
-
The right time for solar augmentation for the CSP industry
While demand for concentrated solar power augmentation of coal-fired plants is picking up with the recent announcement of a 5MW addition to a coal plant in Chile by GDF Suez & Solar Power Group but the fast development of this new market for CSP will only succeed as the costs come down significantly. Last week’s announcement by GDF SUEZ and Solar Power Group of their plans to develop ...
-
Opening markets for CSP – the industrial heat application
Heavy industry can be a viable secondary market today for CSP producers, but questions remain on whether start-up costs are justifiable for industrial users, and how reliable CSP can be for processes that can't pace production by the sun. Solar thermal heat implies steam, and industries that need steam include refining, food processing, wood-working, desalination and chemicals, among others. ...
-
UK and Norway unite to set the North Sea as a leading energy hub
The two governments agree to encourage renewable energy, CCS, oil and gas. The UK and Norway yesterday agreed to increase the levels of co-operation between the two countries as they attempt to re-establish the North Sea as one of the world's leading energy hubs. The two governments recognize the "growing potential for North Sea marine renewable energy projects to bring new investment and green ...
By Vital Energi
-
Increasing condenser capacity without adding tubes to support a station uprate
Abstract A station uprate provides an economical opportunity to improve the generation capacity of a power plant if all the major system components are able to handle the effects of increased generation. The magnitude of uprate from increased steam generation will be limited by the maximum capacity of the weakest link in the cycle, which for many plants is the condenser. The condensers on many ...
By Intek, Inc.
-
Development of one-dimensional computer code DESOPT for thermal hydraulic design of sodium-heated once through steam generators
Once-through Steam Generator (SG) is a critical component of Liquid Metal Fast Breeder Reactor (LMFBR) plant. It is a counter current heat exchanger, in which heat is transferred from the hot sodium flowing on the shell side to water/steam in tube side. High pressure subcooled water enters the SG tube from bottom, gets heated up to saturation, goes through nucleate boiling, dry out and post dry ...
-
Biogas upgrading using the DMT Carborex® PWS Technology.
Abstract Gas is an excellent fuel for a large number of applications and can also be used as raw material for the pro- duction of chemicals. Biogas can be used in more or less all the applications that are developed for natural gas. For some of the applications biogas may have to be upgraded. Injection of biogas into the natural gas grid will result in an improved security of supply. This is ...
-
Sensitivity analysis in a simulated auto thermal Natural Gas reforming process
Auto Thermal natural gas Reforming (ATR) is one of the mostly used conventional hydrogen generation technologies by the highly developed countries. ATR reactors do not need any direct or indirect heat exchanger, and that is why they are more compact and so preferable than the other reformers. In this study, a process including reformers, carbon dioxide sequestration and a cryogenic separation ...
-
Improving steam power plant efficiency through exergy analysis: effects of altering excess combustion air and stack-gas temperature
Modifications are examined to increase coal-fired steam power plant efficiency by reducing irreversibilities in the steam generator, including decreasing the fraction of excess combustion air, and/or the stack-gas temperature. Overall-plant energy and exergy efficiencies both increase by 1.4% when the fraction of excess combustion air decreases from 0.4 to 0.15, and by 3.5% when the stack-gas ...
-
Energy from waste: the recycling of limed fleshings
Leather products have been around a long while - there are those who claim that it is the second oldest business in the world. Going back a few millennia, when our earliest ancestors decided that sitting on hard rock was not a soft option, they turned to other materials in order to create more comfortable seating, as well as warmer bedding and improved clothing. Animal skins became the ...
By Flottweg SE
-
Biomass gasification with pure steam in fluidised bed: 12 variables that affect the effectiveness of the biomass gasifier
Biomass gasification in fluidised bed with pure steam has already generated a 60 vol.%, dry basis, H2 rich gas that was increased to 70–80 vol.% H2 by using a CO2 sorbent in the gasifier bed. A tar content as low as 0.25 g/Nm³ has also been reported when an active catalyst is used in the gasifier bed. Biomass gasification in fluidised bed with pure steam, therefore, has some potential ...
-
Comparative study of steam injection effects on operation of gas turbine cycles
In the present work, gas turbine cycles are modified with steam injection between the combustion chamber exit and the gas turbine inlet. Heat recovery steam generators, utilising the exhaust gases, provide these cycles with the injected steam at saturated vapour. The irreversibility of the different composing units of the cycles and the variation of gas properties owing to steam injection as well ...
-
Case Study - 2.0 MW Nominal Geothermal Power Plant
Lake Naivasha, Kenya – 2007 Under a contract signed in June 2006 with Oserian, Geothermal Development Associates (GDA) agreed to design, manufacture, inspect, test, pack, and ship a 2 MW nominal geothermal steam turbine generator and related power plant auxiliary components from Reno, Nevada, USA to the Oserian flower-growing facility near Lake Naivasha, Kenya. GDA will provide technical ...
-
Co-production of synthesis gas and power by integration of Partial Oxidation reactor, gas turbine and air separation unit
A new synthesis gas production process based on partial oxidation (POX) of natural gas is investigated. Synthesis gas and mechanical power are generated in a plant that integrates a POX reactor, a synthesis gas turbine and an air separation unit. The synthesis gas is expanded in the turbine which runs the air separation unit. By means of an exergy analysis, it is shown that the synthesis gas ...
-
Pressurised pulverised coal combustion ? a coal-based combined-cycle state of the cooperative project: cleaned flue gas matches specifications for use with gas turbines
A high efficiency of 60% in a combined-cycle power plant technology with fuels like gas or light oil is estimated to be achievable. On the other hand existing conventional coal-fired power plants based on steam generation have an efficiency of about 40?45%. A huge potential of improvement in efficiency could be achieved by the implementation of a simple and cost-effective technology: PPCC, a ...
-
The 700?C steam turbine power plant ? status of development and outlook
This paper appraises the current development status of the 700?C steam power plant under consideration of process optimisation as well as design aspects of the steam turbine and steam generator. The results for a compact arrangement of the steam turbine and steam generator are also presented. Based on a cycle analysis, a net efficiency between 49.3% and 51.4% can be achieved with the 700?C steam ...
-
Case study - Keeping ethanol production green
OVERVIEW Originally published in Pollution Engineering Magazine. In an effort to reduce the world’s dependence on fossil fuels, there has been a major push towards alternatives. Ethanol has been at the forefront of this movement because it reduces greenhouse gas emissions from automobiles and its production has a positive net energy balance. The homegrown fuel also reduces the need for ...
-
VSEP improves industrial boiler performance and reduces blowdown frequency by a factor of ten
In the steam boiler industry, high purity feed water is required to ensure proper operation of steam generation systems. High purity feed water reduces the use of boiler chemicals due to less frequent blowdown requirements (reducing blowdown frequency by as much as a factor of 10). Lower blowdown frequency also results in lower fuel costs. Scale buildup is reduced due to a smaller concentration ...
-
Identification of a VVER horizontal steam generator using recurrent neural networks
Although a large number of simulations have been developed for U-tube steam generators in Western pressurised water reactors, no suitable models yet exist for horizontal steam generators in VVER-type nuclear power plants. This research aims to use RELAP5 thermohydraulic code data to identify a horizontal steam generator via an intelligent structure named Nonlinear Auto Regression with eXogenous ...
-
Exergetic destructions in steam generation system: Azzour plant
The aim of this research is to investigate the exergetic destructions of Azzour steam generation system. The exergy destructions (irreversibilities) of the steam generation system were analysed based on actual plant operating data. Three irreversible processes were investigated; combustion, heat transfer and streams mixing processes. Sensitivity analysis was carried out to study the effects of ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you