Heating Plants Articles
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The natural gas revolution: Good or bad for energy efficiency?
If there were an equivalent in the energy industry to Time Magazine’s Person of the Year, natural gas would be this year’s winner. The dramatic rise in natural gas supply, and fall in price, has reconfigured the energy scene in the United States, suddenly creating a bounty of domestic energy, driving down wholesale power prices and speeding retirement of polluting coal-fired plants. ...
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Solutions for the exploitation of biomass energy in mountain regions
Using tow-cables to extract and transport biomass to forest paths Many forests are located on mountainous terrain with steep slopes, making their exploitation not economically viable, at least with traditional methods. This can lead to the abandonment of such hilly woodlands, giving rise to rodent infestation or forest fires, with resulting damage to the woods themselves and to surrounding ...
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Methane Number
Did you know that the methane number of a gas provides an indication of the knock tendency of a fuel? It is a product of the different constituent gases within the natural gas, particularly the proportions of methane, ethane, propane and butane. Understanding the knock resistance is important when specificing an engine for a gas-powered combined heat and power plant. Methane, which has a high ...
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A Czech biogas plant heats kindergarten, primary school and cafeteria
Location Lípa/Czech Republic Capacity 526 kWel In operation since 08/2008 Input materials Cattle liquid manure, maize silage Features A local primary school is being heated using exhaust heat from a biogas plant. The entire electricity generated in the biogas plant in Lípa is sold to the state energy company EZ. The generated heat is used by the farm to heat a kindergarten, a ...
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A novel cogeneration cycle based on a recompression supercritical carbon dioxide cycle for waste heat recovery in nuclear power plants
In this study, a novel cogeneration cycle based on the recompression S–CO2 Brayton cycle is proposed, analysed and optimised thermodynamically to utilise the waste heat from a nuclear power plant. The cycle was constructed theoretically on the basis of a transcritical CO2 power cycle and a LiBr/H2O Absorption Heat Transformer (AHT) to enhance the overall performance of the cycle. It was found ...
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Heat recovery and energy efficiency, improves profitability and reduces CO footprint
Using latest technology in combustion of oil and gas can provide significant savings in overall energy consumption. Modern oxygen control that compensates changes in ambient temperature and fuel qualities can increase energy efficiency up to 3%. By adding the usage of hot combustion air another 2-3% can be saved. Modern burner technology without mechanical linkage, operating with accurate ...
By Oilon Oy
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Much light, little heat efficiency
Energy efficiency in the US is much light and little heat – literally. Government policy pays a great deal of attention to saving electricity, but focuses little on the thermal energy we waste. “Policy is electricity-centric in the US. Unless you are making kilowatts, the most efficient investments are off the radar,” said Rob Thornton, president of the International District ...
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Transient analysis of pressure and temperature of fluid into AP1000 reactor containment during DECL accident with several volumes modelling
Since the accidents at Three Mile Island and Chernobyl, more stringent requirements have been imposed on the containment system for full replica nuclear power plant simulators. The simulation must be able to accurately respond under all normal operations and especially under abnormal conditions, including leaks and breaks of any size in any location in the reactor building. This paper presents ...
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Better sight with natural light
Since the invention of the light bulb in the late 1800s, the use of artificial light has swept the globe as a ‘must have’ in every home and office, largely due to the option for increased productivity. However, the result of having these luxuries so readily available has dimmed our desire to use natural light to the point where it has been largely neglected in the design of many of ...
By green24
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Time to export energy efficiency?
We keep hearing that China is going to become a really big deal in world energy markets. But it wasn’t until I read this statement by Jane Henley, CEO of the World Green Building Council, that I grasped the scope of its coming influence: "China is projected to build the equivalent of 10 New York Cities over the next decade.” For some, such rapid economic expansion by China is cause ...
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Save money, save carbon
As a way of saving money in a financially difficult time, engaging in a resource efficiency programme can help organsations cut costs from waste, water, packaging, emissions and supply chain wastage. Embedding a resource efficient approach to procurement business can proactively work with suppliers that offer cost effective solutions as well as environmentally preferable options. In the UK there ...
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Technical note: An approximate examination of the effects of esterification on the EROEI of biodiesel fuels
Heat balance calculations on esterification of plant oil to make biodiesel are performed using recently published information from a laboratory reactor. It is concluded that such energy is relatively small and that attempts to improve the EROEI of biodiesels should not focus on the esterification process. [Received: January 8, 2009; Accepted: September 25, 2009]Keywords: biodiesel, ...
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Practical application of the RUTA safe pool-type nuclear reactor to demonstrate the advantages of atomic energy use
The concept of the RUTA water-cooled, water-moderated pool-type nuclear reactor is presented. The basic findings of the RUTA-70 pilot district-heating plant in the science town of Obninsk, Kaluga Region, Russia, and its capabilities for nuclear technology research purposes, are shown. The basic technical data of the reactor facility are presented and its design is described in brief. The ...
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Energy head tilters for this week
I’ve been writing about energy for 20 years. And during those years, I’ve heard many out-of-the box concepts and witnessed some surprising trends. But it seems that lately head-tilting news comes along more and more frequently, a sign I think of how quickly innovation is occurring in the electric power industry.Below are three ideas that caught my attention this week as I covered the industry. ...
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Is waste heat the silver bullet?
The energy industry tends to get stuck on certain words. Silver bullet is one of them. Insiders and policymakers often like to say there is no silver bullet to fix US energy woes. We need a portfolio of solutions – renewables, efficiency, smart grid, transmission expansion, coal sequestration, etc. That may be true, but Tom Casten begs to differ. Casten is a bit of a rock star in the field of ...
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Planning and construction of the Munich north combined heat and power plant
The Munich North combined heat and power plant, construction of which commmenced in the autumn of 1988, was a project that set new standards in terms not only of plant diversity and output rating but also of technological design. The present paper attempts to give a general outline of the plant design concept, which combines the aim of maximizing plant operating capabilities with a commitment to ...
By Kimre Inc.
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Enhancement of hydrogen production from Kitchen Waste using heat treated anaerobic biogas plant slurry with pH control
Hydrogen is found to be a clean energy source; biohydrogen has been researched in recent years. Anaerobic Digestion of Kitchen Waste (KW) for hydrogen production was performed in lab scale reactors, using heat-treated anaerobically digested biogas plant slurry. The biogas plant slurry was given heat treatment at varying temperatures ranging from 70 to 100 ° C for 15 min. Enhancement of hydrogen ...
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Redundant combustion plant for Novartis
Type HOFGAS®- IFM4c/2200/1500/60/180 Commissioning 2004 Site Novartis (Basel, CH) Situation In order to prevent production failure due to missing redundancy in the flue gas clean up, Novartis required an additional system. During different production processes exhaust air load with organic components is formed. This air is collected and delivered to a thermal vapour treatment (TVT). ...
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Evaluating the concentrations of partitioned heavy metals in fly ash from a medium-sized (32 MW) municipal district heating plant with respect to the new Finnish limit values
The total heavy metal concentrations in the fly ash were clearly lower than the Finnish limit values for forestry fertilisers, and for material used as an earth construction agent, which came into force in March 2007 and in June 2006, respectively. The relatively low heavy metal concentrations, the alkaline pH (12.5) and the elevated Ca concentration (139.5 g kg−1; d.w.) indicate that the fly ash ...
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Producing hydrogen using nuclear energy
The earliest means of separating hydrogen from water was by electrolysis using electrical energy that usually had been produced by low-efficiency thermodynamic processes. Substitution of thermal energy for electrical energy in high-temperature electrolysis gives a somewhat higher overall efficiency, but significantly complicates the process. Today, the vast majority of hydrogen is produced by ...
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