power performance Articles
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Performance analysis of an irreversible regenerative intercooled Brayton cycle
The influences of the number of heat transfer units distribution, cycle pressure ratio, specific heat ratio, etc. on the performance of an irreversible regenerative closed intercooled Brayton cycle are investigated in terms of thermal efficiency, thermodynamic efficiency, dimensionless power, entropy generation number and Ecological Coefficient Of Performance (ECOP). Different performance ...
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Improved space vector PWM algorithm for three–level voltage source inverter in overmodulation region
In high power high performance AC drive industrial applications, multilevel inverters have established their importance, as they can synthesise output waveform with improved harmonic spectrum. In this paper, an improved synchronisation and symmetrical SVPWM algorithm is proposed for three–level inverter in overmodulation region for better utilisation of DC bus and to reduce harmonic distortion. ...
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Optimum distribution of heat exchanger inventory and optimum thermal capacitance rate matching for power optimisation of a regenerated closed Brayton cycle
The power output of the cycle is taken as objective for performance analysis and optimisation of an irreversible regenerated closed Brayton cycle coupled to variable-temperature heat reservoirs. The analytical formulae about the relations between power output and pressure ratio are derived with the heat resistance losses in three heat exchangers, the irreversible losses in the compressor and ...
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Introducing The RNRG Goalpost Boom
We are happy to introduce a new goalpost mounting solution for installing redundant class 1 anemometers. This new boom, designed specifically for use with our 80m XHD TallTower, positions anemometer cups at exactly 80 m above ground level—2.5 m away from each other—and 1.99 m above the horizontal arm of the boom. This configuration complies with guidelines provided in Annex G of the ...
By NRG Systems
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How to Choose PoE Splitter?
With the maturity of PoE power supply technology and its wide application, such as Shenzhen Fining Electronics Co., Ltd., specializing in the supply of PoE equipment, its PoE power supply has good performance, with 30W, 45W, 60W, standard IEEE802.3at/3af+PoE power supply, to provide protection for electrical equipment.How to select high power PoE splitter Method/step 1. Determine the working ...
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Diesel/PTO Power Unit - Case Study
August 2005. Horseshow Lake Conservation Area Department of Natural Resources, Granite City, Illinois purchased one Crisafulli 16" Humpback, regular lift, industrial duty trailer pump and one Crisafulli diesel/PTO skid mounted power unit together with tubing, hose assembly, and spare parts. The state agency made the following comments about Crisafulli product quality and customer service - "The ...
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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 ...
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Multilevel voltage space vector generation with hexagonal and dodecagonal voltage space vectors for induction motor drives
The proposed power circuit that can perform multilevel inverter operation consists of three cascaded two level inverters with asymmetric DC link voltages and results in hexagonal voltage space vector structure in lower modulation region and a 12–sided polygonal space vector structure in the higher modulation region. The proposed topology reduces torque pulsations and losses due to the complete ...
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Application of hybrid fuzzy PID controller for three–area power system with generation rate constraint
This paper presents a new approach for load frequency control of three–area interconnected reheat thermal power system with the consideration of generation rate constraint (GRC). The PID–type fuzzy controller is combined with a conventional PID controller to enhance the performance and robustness of the controller. The proposed controller called hybrid fuzzy PID (HFLPID) controller has been ...
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Effect of Non-Condensable Gases on geothermal power plant performance. Case study: Kizildere Geothermal Power Plant-Turkey
Non-Condensable Gases (NCGs) are natural components of geothermal fluids, and they are a source of considerable capital and operating costs for power plants. The NCG content of geothermal steam varies over the world from almost zero to as much as 25% (wt). In this work, the influence of NCGs on the thermodynamic performance of geothermal power plants is analysed for various NCG content and ...
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How Will ISO 9001 Help Your Start-Up?
While it is often viewed as a tool for larger, more established companies, ISO 9001 certification actually has an equal power to boost the performance of start-up ventures. Here’s how: Building desirability Proving experience and competence in today’s competitive marketplace can often be a struggle. With an increasing reliance on testimonials, word of mouth referrals and social ...
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A technical note on performance testing of a solar box cooker provided with sensible storage material on the surface of absorbing plate
A box type solar cooker having a double glass cover and a plane mirror reflector has been tested for its thermal performance. In the present study, performance of solar box cooker has been compared by using two different sensible heat storage materials (sand and granular carbon). By using these materials as a mixture and spread it over absorber tray in the form of thin layer and fully packed with ...
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Performance evaluation of Indian electrical distribution utilities in the post Electricity Act 2003 era
Indian electricity sector constitutes a contrast a highly sophisticated modern generation and transmission system, but a very poor distribution system in several utilities. Despite the realisation of the importance of the distribution sector, the performances of Indian distribution utilities have not been measured empirically so far. The post Electricity Act 2003 (EA 2003) era has witnessed ...
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Methodological basis to decide short-term investments in distribution systems under uncertainty in performance-based regulatory frameworks
This paper presents new concepts and methodological tools to decide the investments that electric distribution utilities must perform under regulatory frameworks based on performance (Performance Based Regulation or PBR). The proposal is focused on short-term investments. In this work, the subject of hierarchical expansion planning and the basis for an investment decision methodology are ...
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On nuclear energy in Romania
The production of nuclear energy in Romania, at the Cernavoda Nuclear Power Plant (NPP) with CANDU-600 equipment and five 700 MW reactors, one of which is operational, will cover 10% of the national energy demand. In this paper we discuss the following problems: the exploitation of the installation in conditions of safety and the prospect of increasing the final power output of the NPP; the ...
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7.5V Combined Type Seires Super Capacitors
Technical data SE series Performance characteristics: standard energy series. Typical applications: RAM, detonator, car recorder, smart meter, vacuum switch, digital camera, motor drive, clock circuit, UPS, toy, program-controlled switch, etc. SP Series Performance characteristics:Standard power series Typical applications: RAM, detonator, car recorder, smart meter, vacuum switch, ...
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5.5V Combined Type Seires Super Capacitors
SE series Performance characteristics: standard energy series. SE series Typical applications: RAM, detonator, car recorder, smart meter, vacuum switch, digital camera, motor drive, clock circuit, UPS, toy, program-controlled switch, etc. SE Series specification sheet Series name SE Series Type name SE -5R5 Rated voltage 5.5V VR Surge voltage 5.8V Capacity range 0.33F~7.5F Operating temperature ...
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On-line monitoring for improving performance of nuclear power plantspart 2: Process and componentcondition monitoring and diagnostics
The IAEA’s work in the area of nuclear power plant operating performance and life cycle management isaimed at enhancing the capability of Member States to utilize good engineering and management practicesdeveloped and transferred by the IAEA. In particular, the IAEA supports activities such as improving nuclearpower plant performance, plant life management, training, power uprating, ...
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Hybrid machine intelligence–based improved classifiers for multiple power signal disturbances
This work presents a new technique for the identification of multiple power quality disturbances in industrial power systems. This new technique is developed based on change detection filter (CDF) and machine intelligence techniques like the local linear radial basis function neural network (LLRBFNN) and decision tree (DT). The proposed change detection filter has been designed in one cycle back ...
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Capacitor application issues
Abstract - Capacitors provide well-known benefits to electric power systems. These benefits include power factor correction, voltage support, release of system capacity, and reduced system losses. As with any piece of electrical equipment, there are a number of application issues that engineers need to be aware of. These issues range from the very basic to the very complex. Most of these ...
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