نتایج جستجو برای: lower heating value

تعداد نتایج: 1405489  

In this research, DTA and TGA curves of titanium hydride powder in air with the heating rates of 5, 10, 20, 25, 30ºC/min were drawn, and XRD patterns of titanium hydride powder during heating rate 10ºC/min were prepared. Results showed that hydrogen comes out of titanium hydride in air during seven stages. And, by increasing heating rate, the mechanism of hydrogen emission from titanium hydride...

2009
J. Matthew Nelson Brandon M. Davis X. Guan Roxann F. Leonard

The Power Systems Development Facility (PSDF) is an engineering scale demonstration of advanced coal based power systems, including the KBR Transport Gasifier, a hightemperature, high-pressure syngas filtration system, and a gas cleanup unit. Designed to be at a sufficient scale to test advanced power systems and components in an integrated fashion, the PSDF provides data necessary for commerci...

Journal: :energy equipment and systems 0
mona rahmatian department of mechanical engineering, faculty of engineering & technology, alzahra university, tehran, iran fateme ahmadi boyaghchi department of mechanical engineering, faculty of engineering & technology, alzahra university, tehran, iran

the present research proposes and optimizes the performance of a novel solar-driven combined cooling, heating, and power (cchp) kalina system for two seasons—winter and summer—based on exergy, exergo-economic, and exergo-environmental concepts applying a non-dominated sort genetic algorithm-ii (nsga-ii) technique. three criteria, i.e. daily exergy efficiency, total product cost rate, and total ...

ژورنال: انرژی ایران 2020

Residential and commercial sectors are the main consumers of energy. According to available data, these two sectors account for more than one-third of total energy use. Moreover, heating and cooling systems contribute to the major share of energy use in a building. The current research economically evaluates the radio-frequency heating systems for use in residential buildings. A building in Dis...

The tests were carried out with the spark timing adjusted to the maximum brake torquetiming in various equivalence ratios and engine speeds for gasoline and natural gas operations. In thiswork, the lower heating value of gasoline is about 13.6% higher than that of natural gas. Based on theexperimental results, the natural gas operation causes an increase of about 6.2% brake special fuelconsumpt...

Journal: :international journal of advanced biological and biomedical research 2013
mohamed hefnawy mohamed gharieb osama m. nagdi

mesophilic bacteria, fungi and actinomycetes varied during composting cycles with high numbers in the initial and final cycles with maximal values in compost c and d, and sharply decreased in the heating cycles. staphylococcus aureus and bacillus subtilis were dominated at the initial composting cycle. whereas, at maturity bacillus subtilis was the major followed by b.badies, b.polymixa and b.b...

2002
P. Dmitruk W. H. Matthaeus L. J. Milano D. J. Mullan

The heating of the lower solar corona is examined using numerical simulations and theoretical models of magnetohydrodynamic turbulence in open magnetic regions. A turbulent energy cascade to small length scales perpendicular to the mean magnetic field can be sustained by driving with low-frequency Alfvén waves reflected from mean density and magnetic field gradients. This mechanism deposits ene...

Journal: :جنگل و فرآورده های چوب 0
فاطمه جدیدیان دانشجو کارشناسی ارشد محمد طلایی پور دانشیار دانشگاه آزاد اسلامی واحد علوم و تحقیقات سعید مهدوی دانشیار موسسه تحقیقات جنگلها و مراتع کشور- بخش تحقیقات علوم چوب و کاغذ امیر هومن حمصی دانشیار دانشگاه آزاد اسلامی واحد علوم و تحقیقات

the purpose of this study is the utilization of furfural residue for heating energy and activated carbon production. to evaluate the energy production of the residue, bulk density, melting point, and heating value were measured. furthermore, moisture, ash, volatile compounds, fixed carbon, lignin, and elements were determined. ash and volatile content average were measured at 15.4% and 68.9%, r...

2012
Júlia R. Sarkis Débora P. Jaeschke Isabel C. Tessaro Ligia D.F. Marczak

The present work evaluates the anthocyanin degradation in blueberry pulp after thermal treatment using ohmic and conventional heating. The ohmic heating technology was studied using a rotatable central composite design, and the variables studied were voltage and solids content. The anthocyanin content of the samples was determined using HPLC. The results show that degradation increased with bot...

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