Arhivă revistă


21-91 TRENURILE CU ECARTAMENT VARIABIL O SOLUŢIE DE INTEROPERABILITATE VIABILĂ

VARIABLE GAUGE TRAINS A VIABLE
INTEROPERABILITY SOLUTION
In the last 20 years the Commission has been very active in
restructuring the European rail transport market and strengthening the position
of railways vis-à-vis other transport modes. Commission efforts have
concentrated on three major areas which are all crucial for developing a strong
and competitive rail transport industry: (1) opening of the rail transport market
to competition, (2) improving the interoperability and safety of national networks
and (3) developing rail transport infrastructure 0.
Cuvinte cheie: tren, ecartament, interoperabilitate, schimbător, Talgo
Keywords: train, track, interoperability, changing, Talgo

91 TRENURILE CU ECARTAMENT VARIABIL O SOLUŢIE


21-90 CREŞTEREA SARCINII UTILE A UNUI VAGON CISTERNĂ

TANK WAGON’S LOAD INCREASING
The axle load for railway vehicle in Romania is 20 tones. The trend is to
increase the axle load from 20 to 22.5 tones. Because Romania is one of
European Union’s countries for Romanian’s railway vehicle owners it is
important to have modern vehicle able to run all over the Europe. The are many
countries in Europe where axle load is 22.5 tones (Austria, Germany, France
etc.).
Cuvinte cheie: cisternă, sarcină, modernizare, metoda elementelor
finite
Keywords: tank, load, modernization, finite element

90 CREŞTEREA SARCINII UTILE A UNUI VAGON


21-89 RELEVANŢA PROCESULUI DE ECRUISARE APLICAT ARCURILOR ELICOIDALE CILINDRICE ALE VEHICULELOR FEROVIARE

RELEVANT PROCESS APPLIED HARDENING COIL
SPRINGS CYLINDRICAL RAILWAY VEHICLES
In the performance of helical springs, the surface residual stresses are
introduced: the outside bar tensile stress and compressive stress inside the
bar. They associated with a possible primer for cracks can lead to premature
rupture of the spring in use. To eliminate this drawback springs are subjected to
hardening treatment which is performed, usually with steel shot.
This paper aims highlighting the importance of the hardening process
applied coil springs to increase resistance to fatigue and lifetime.
Cuvinte cheie : ecruisare, arcuri, epruveta ALMEN, bile de otel (alice)
Keywords: hardening, springs, Almen specimen, steel balls (shot)

89 RELEVANŢA PROCESULUI DE ECRUISARE APLICAT


21-88 CONSIDERAȚII ASUPRA VIBRAȚIILOR SUSPENSIILOR VEHICULELOR DE CALE FERATĂ Partea a II-a

REFLECTIONS ON RAILWAY
VIBRATION VEHICLE SUSPENSIONS – II
Making a simple mechanical model railway vehicle must contain
masses suspended bogie and vehicle weight box connected by elastic and
dynamic elements. Thus, the suspension of railway vehicles consists of elastic
elements, connecting elements, and shock. Vibration measurements of elastic
element (or set of elastic elements) of a railway vehicle suspension requires a
stand to simulate operating conditions. This paper presents such a stand which
operates as a vibrator.
Cuvinte cheie: model mecanic, vibrații, suspensiile vehiculelor
feroviare, stand de simulare și măsurare, vibrator
Keywords: mechanical design, vibrations, suspension rail vehicle
simulation and measurement stand, vibrating

88 CONSIDERAȚII ASUPRA VIBRAȚIILOR


21-87 CONSIDERAȚII ASUPRA VIBRAȚIILOR SUSPENSIILOR VEHICULELOR DE CALE FERATĂ Partea I

REFLECTIONS ON RAILWAY
VIBRATION VEHICLE SUSPENSIONS – I
Making a simple mechanical model railway vehicle must contain
masses suspended bogie and vehicle weight box connected by elastic and
dynamic elements. Thus, the suspension of railway vehicles consists of elastic
elements, connecting elements, and shock. Vibration measurements of elastic
element (or set of elastic elements) of a railway vehicle suspension requires a
stand to simulate operating conditions. This paper presents such a stand which
operates as a vibrator.
Cuvinte cheie: model mecanic, vibrații, suspensiile vehiculelor
feroviare, stand de simulare și măsurare, vibrator
Keywords: mechanical design, vibrations, suspension rail vehicle
simulation and measurement stand, vibrating

87 CONSIDERAȚII ASUPRA VIBRAȚIILOR


21-86 UTILIZAREA PROGRAMULUI ALGOR ÎN CALCULUL SOLICITĂRILOR LA ÎNCOVOIERE A BOLŢULUI UNUI MOTOR DIESEL

USING THE ALGOR SOFTWARE FOR DETERMINING THE
WRIST PIN BENDING FOR A DIESEL ENGINE
The paper introduces the steps of determining the wrist pin bending
for a diesel engine, based on the finite element analysis method, using Algor
software.
Cuvinte cheie: bolţ, elemente finite, încovoiere, motor diesel
Keywords: bolt, finite element, bending, Diesel

86 UTILIZAREA PROGRAMULUI ALGOR ÎN CALCULUL


21-85 UTILIZAREA FOTOELASTICIMETRIEI ÎN ANALIZA STĂRII DE TENSIUNI PENTRU O STRUCTURĂ DE ROBOT INDUSTRIAL. CONSIDERAŢII GENERALE

THE USE OF PHOTOELASTICITY IN ANALYZING THE STATE
OF STRESSES FOR THE STRUCTURE OF AN INDUSTRIAL
ROBOT. GENERAL CONSIDERATIONS
In this paper it’s presented, in general, the experimental study of the
structure of an industrial robot with five degrees of freedom. Using the
experimental method of photoelasticity, are determined the principal stress
difference and the distribution of stresses on the surface of entire structure of
the studied industrial robot.
Cuvinte cheie: experimental, fotoelasticimetrie, tensiuni, deformaţii,
robot, serial
Keywords: experimental, method of photoelasticity, stress, strain,
industrial robot, show

85 UTILIZAREA FOTOELASTICIMETRIEI ÎN ANALIZA


21-84 EFECTUL DEFECTULUI ASUPRA COMPORTĂRII DINAMICE A GRINZILOR

THE DAMAGE EFFECT ON DYNAMIC BEHAVIOUR OF
BEAMS
Structural Health Monitoring (SHM) for civil engineering applications
involves the use of sensing networks in order to diagnose damage in large
scale civil structures such as buildings, bridges, aircraft. SHM will result in large
savings in maintenance costs as well as improving life safety by providing a
real-time updating of a structure’s integrity.
Cuvinte cheie: defect, vibraţii, senzori, bară încastrată
Keywords: failure, vibration sensors, embedded bar

84 EFECTUL DEFECTULUI ASUPRA COMPORTĂRII DINAMICE A GRINZILOR


21-83 ÎNCERCĂRI SPECIFICE DE REZISTENŢĂ LA AMORTIZOARE DE ŞOC DIN POLIETILENĂ

POLYETHYLENE SHOCK ABSORBER STRENGTH
SPECIFIC TESTS
Working on high structures is one of the jobs in the cities vertically
developed. The abilities of climb workers are used in purpose to mount publicity
banners, to clean building face, to mount objects on buildings etc.
The use of fall arrester equipment is made under strictly surveillance
and schooling of the workers because of imminence of the accidents. Before
sailing, the fall arrester equipment are tested and certificated.
Cuvinte cheie: încercări, polietilenă, MGC, tensometrie
Keywords: testing, polyethylene, GMC, tensometers

83 ÎNCERCĂRI SPECIFICE DE REZISTENŢĂ LA


21-82 UTILIZAREA METODEI MEDIILOR ARITMETICE LA PRELUCRAREA DATELOR EXPERIMENTALE

THE USE OF ARITHMETIC MEAN METHOD FOR
EXPERIMENTAL DATA PROCESSING
The paper presents an application of the arithmetic mean method
applied to experimental data processing gained from vibration measurement on
a SN400x1500 lathe in four manufacturing cycles and using four cutting
regimes for each cycle.
Cuvinte cheie: metodă, medii aritmetice, date experimentale, serii
bidimensionale
Keywords: method, arithmetic average, experimental data, twodimensional
series

82 UTILIZAREA METODEI MEDIILOR ARITMETICE LA


21-81 DIFERENŢE MAJORE LA UTILIZAREA DEŞEURILOR ÎN MATERIALE DE CONSTRUCŢII

MAJOR DIFFERENCES TO USE WASTE
IN BUILDING MATERIALS
Using waste properly and are very important mixing conditions the
vent so the strict observance of working conditions. In previous experiments
cork waste does not undergo thermal or physical and chemical transformations,
only a simple shredding process. Thus, the shredded cork is inserted in the
concrete mixture, partly replacing the aggregate. By means of this recycling
process, a major objective for sustainable development is confirmed –
improving environmental quality.
Cuvinte cheie: deşeuri, plută, beton, agregate, mărunţire, mediu,
rezistenţa de compresiune
Keywords: waste, cork, concrete, aggregate, grinding, medium
compressive strength

81 DIFERENŢE MAJORE LA UTILIZAREA DEŞEURILOR


21-80 UTILIZAREA DEŞEURILOR ÎN MATERIALE DE CONSTRUCŢII

USING WASTES IN BUILDING MATERIALS
Using waste (especially those of organic nature) are a success for
both construction and environment. In previous experiments cork waste does
not undergo thermal or physical and chemical transformations, only a simple
shredding process. Thus, the shredded cork is inserted in the concrete mixture,
partly replacing the aggregate. By means of this recycling process, a major
objective for sustainable development is confirmed – improving environmental
quality.
Cuvinte cheie: deşeuri, plută, beton, agregate, mărunţire, mediu,
rezistenţa de compresiune.
Keywords: waste, cork, concrete, aggregate, grinding, medium
compressive strength

80 UTILIZAREA DEŞEURILOR ÎN MATERIALE


21-79 MICȘORAREA TIMPULUI DE INTERVENȚIE ÎN SISTEMELE ANTIGRINDINĂ PRIN SISTEME DE SUPORT DECIZIONAL

DECREASING THE INTERVENTION TIME IN THE ANTI- HAIL
SYSTEMS THROUGH DECISION SUPPORT SYSTEM
This paper deals with the design of a system for decisional support
dedicated to an anti-hail system. It is proposed a specific system for Romania
anti-hail network, which completes the existing systems with specific
information in order to identify the best solutions for both coordination and
launch. The main methods of combating hail are related to the seeding clouds
with rockets, artillery and aircraft, the use of canon shock wave, ground particle
generators and anti-hail nets. The system comprises two main components: a
subsystem of launch decision and a subsystem for assisting the launch
decision. In order to achieve this system, the following important issues are
considered: the use of communication via GPRS, monitoring the parameters
throughout all period of operating, log-values, status and alarms, operator
actions logs, friendly graphical interface and the generation of tabular and
graphical reports for any period. The system enables: an increased efficiency
by shortening the time for action, a good organization and a high degree of
security.
Cuvinte cheie: antigrindină, suport decizional, GIS, monitorizare
Keywords: hail, decision support, GIS, monitoring

79 MICȘORAREA TIMPULUI DE INTERVENȚIE ÎN


21-78 CERCETĂRI PRIVIND ELECTROLIZORUL CELULEI DE COMBUSTIE CU CONŢINUT DE ELECTROLIT SOLID POLIMERIZAT

RESEARCH ON SOLID POLYMER ELECTROLYTE
ELECTROLYSER OF THE FUEL CELL
This study analyzes the solid polymer electrolyte electrolyser of the
fuel cell, the theoretical model description and efficiency of the SPE fuel cell
water electrolysis and theoretical aspect of the Butler-Volmer equation. The
model description is used to understand the effects of the parameters on SPE
fuel cell water electrolysis. Recent studies have demonstrated the importance
of the current exchange at the anode chambers and the phenomena at the
anode membrane interface, which is the key point of the entire efficiency of
water electrolysis.
Cuvinte cheie: hidrogen, electroliza apei, SPE, electrolizor SPE,
Nafion
Keywords: hydrogen, water electrolysis, SPE, SPE electrolyser,
Nafion

78 CERCETĂRI PRIVIND ELECTROLIZORUL CELULEI


21-77 INSTALAȚIE EXPERIMENTALĂ PENTRU STUDIUL FORMĂRII STRATULUI DE FUM ȘI GAZE FIERBINȚI ÎNTR-UN SPAȚIU INCENDIAT ȘI A CURGERII ACESTORA PRIN GOLURILE DE VENTILARE

THE EXPERIMENTAL INSTALLATION FOR THE STUDY ON
THE FORMATION OF HOT SMOKE AND GASES IN A
BURNING ENCLOSURE AND ON THEIR FLOW THROUGH
THE VENTILATION OPENINGS
This paper is an experimental proposal to view and analyze the movement
of smoke and hot gases and the formation of the smoke layer in a burning
enclosure, the latter depending on the degree of ventilation of the room,
thermal loading of the furnace and the thermal inertia of the enclosure. Inside a
sufficiently ventilated burning enclosure, two areas develop: the upper –
containing smoke and hot gases – and the lower one, containing relatively fresh
air. Experiments conducted in this research were primarily aimed at
demonstrating the basic theory that the thickness of the above layers depends
on the ventilation holes and the size of the firebox.
Cuvinte cheie: incendiu, fum, gaze fierbinți, strat de fum, ventilare
Keywords: fire, smoke, hot gases, smoke layer, ventilation

77 INSTALAȚIE EXPERIMENTALĂ PENTRU STUDIUL


21-76 SIMULARE 3D A UNEI SITUAŢII DE INCENDIU LA METROUL BUCUREŞTEAN

3D SIMULATION OF A FIRE IN SITUATION
IN BUCHAREST SUBWAY
The article presents the work of the authors concerning the 3D fire
simulation at a subway metro station in Bucharest, Romania. The subject is
very important, as in such a real case of fire in subway stations, large number
of casualties can occur.
Cuvinte cheie: 3D simulare, metrou, foc, simulare de incendiu
Keywords: 3D simulation, subway fire, fire simulation

76 SIMULARE 3D A UNEI SITUAŢII DE INCENDIU


21-75 EVACUAREA UNEI STAŢII DE METROU DIN BUCUREŞTI ÎN CAZUL UNEI SITUAŢII DE URGENŢĂ. SIMULARE COMPUTERIZATĂ 3D

EVACUATION OF A BUCHAREST Metro STATION IN CASE
OF EMERGENCY. 3D COMPUTER SIMULATION
The article presents the work of the authors concerning the 3D
evacuation simulation at a subway metro station in Bucharest, Romania. The
subject is very important, as in such a real case that impose real evacuation
from subway stations, large number of casualties can occur and a lot of
attention must be paid to prevention and organizing the evacuation activity.
Cuvinte cheie: simulare de evacuare 3D, foc evacuare, metrou,
modelare de evacuare
Keywords: 3D evacuation simulation, subway, fire evacuation,
evacuation modeling

75 EVACUAREA UNEI STAŢII DE METROU DIN


21-74 ETANOLUL, COMBUSTIBIL CURAT DESTINAT TESTELOR DE INCENDIU. SIMULARE COMPUTERIZATĂ

ETHANOL, CLEAN FUEL FOR FIRE TESTS.
COMPUTER SIMULATIONS
The following article presents information on the choice of ethanol
as combustible for suppression tests, after running a computer simulation
program, called Pyrosim.
Cuvinte cheie: etanol, teste de incendiu, modele, simulare, mediu,
Keywords: ethanol, fire tests, models, simulation environment

74 ETANOLUL, COMBUSTIBIL CURAT DESTINAT


21-73 DATE PRIVIND MINERALOGIA STERILULUI REZULTAT ÎN URMA SPĂLĂRII HUILEI LA PREPARAŢIILE DIN VESTUL BAZINULUI PETROŞANI

DATA CONCERNING THE MINERALOGY OF STERILE
RESULTED FROM PIT COAL WASHING AT WESTERN
PETROSANI BAZIN PREPARATIONS
The mineral composition of the sterile dumps formed during coal
exploitation and sorting was established during this research. There are found
quartz, potassium feldspar, biotite and calcite. The X-ray diffraction analysis
point out these minerals as well as pronounced crystalline state of the dumped
sterile. The optical mineralogical microscopy reveals the sterile particles
morphology, equiaxial for quartz and calcite and tabular – philliphorm for the
biotite and potassium feldspar. All issued minerals belong to the non coal
intercalations on the geological coal layers.
Cuvinte cheie: steril, huilă, preparaţie
Keywords: sterile, coal, preparation

73 DATE PRIVIND MINERALOGIA STERILULUI REZULTAT


21-72 CARBONIFICAREA HIDROTERMALĂ – O NOUĂ METODĂ DE VALORIFICARE A NĂMOLURILOR DE LA STAȚIILE DE EPURARE

HIDROTHERMAL CARBONIZATION – A NEW METHOD
FOR WASTE WATER TREATEMENT PLANTS
SLUDGE EXPLOATATION
Sludge management is costly and energy consuming. In this paper it
is discussed the possibility of producing two types of fuels from the excess
sludge. One possibility is to transform it into bio ethanol from sludge and the
other is to use hydrothermal carbonization in order to produce a bio-coal.
Hydrothermal carbonization is a new technology that can use humid waste and
transform it into bio coal. It has low greenhouse gases emission because
almost the entire carbon is kept in the biomass.
Cuvinte cheie: nămol, epurare ape, celuloză, carbonizare
hidrotermală, bio-etanol, bio-cărbune
Keywords: sludge, water treatment, cellulose, hydrothermal
carbonization, bio-ethanol, bio-coal

72 CARBONIFICAREA HIDROTERMALĂ – O NOUĂ


21-71 CONTAMINAREA SOLURILOR DIN ZONELE URBANE STUDIU DE CAZ – PERCEPȚIA RISCURILOR ASOCIATE CONTAMINĂRII SOLURILOR ÎN CLUJ-NAPOCA

CONTAMINATE URBAN SOILS
CASE STUDY – ASSESING RISK PERCEPTION RELATED TO
SOIL CONTAMINATION ÎN THE CITY OF CLUJ-NAPOCA
This paper represents a statistical assessment of the perception of
risks related to urban soil pollution in the city of Cluj-Napoca. In the past few
years, in all over Romania an increasing trend could be noticed in the scientific
interest for soil contamination due to anthropogenic activities. Nevertheless, a
research aiming to assess risks due to the presence of contaminants in top soils
of urban areas has never been conducted and the public society is deprived of
such information in all cities. The present statistical analysis represents a pilot
study for the city of Cluj-Napoca. It is the first step that needs to be taken in
order to properly asses risks. Identifying and understanding risk perception is an
important milestone for any measure aiming to diminish pollution related risks
for health and the environment.
Cuvinte cheie: soluri contaminate, poluare urbană, percepția riscului
Keywords: contaminated soil, urban pollution, risk perception

71 CONTAMINAREA SOLURILOR DIN ZONELE URBANE


21-70 TEHNOLOGIE DE EPURARE BIOLOGICĂ CU CONTACTORI BIOLOGICI ROTATIVI ŞI DIMENSIONAREA FILTRELOR DE EPURARE BIOLOGICĂ

TECHNOLOGY FOR WASTE WATER TREATMENT WITH
ROTATING BIOLOGICAL CONTACTORS AND
DIMENSIONING OF THE BIOLOGICAL WASTE WATER
TRETMENT
The paper is to review and assess existing rotating biological contactors
(RBC) design procedures and provide in-depth design information on critical
features of the RBC process and key parameters affecting its operation and
performance than is typically available to the engineering community.
Since past decade, the old works started to be replaced with new
technologies such as rotating biological contactors (RBC), especially for small
communities. RBC is an attached – growth biological process, which consists of
a series of rotating plastic media all coated with a layer of bio film.
The bio film or slime on the media aerobically reacts with substances in a
waste stream for bio-oxidation and nitrification, or anaerobic ally react with the
substances for denitrification. This paper discusses the theory, performance,
design procedures, calculation and dimensioning of the RBC process.
Cuvinte cheie: biodiscuri, epurare biologică, contactori biologici rotativi,
ape uzate, scheme de epurare, substanțe organice biodegradabile
Keywords: biological records, biological treatment, rotating biological
contactors, wastewater, sewage schemes, biodegradable organic substances

70 TEHNOLOGIE DE EPURARE BIOLOGICĂ CU


21-69 INFLUENȚA FACTORILOR POLUANȚI ASUPRA CALITĂȚII SOLULUI DIN ARIILE PROTEJATE CU HABITAT PENTRU ARMERIA MARITIMA WILLD

INFLUENCE OF POLLUTANTS ON SOIL QUALITY IN
PROTECTED AREAS WITH HABITAT FOR ARMERIA
MARITIMA WILLD
This paper is a study of soil quality liveable areas of Armeria Maritima
Willd.
Studies were conducted on soil of protected areas that develop
Armeria Maritima revealed the positive influence they have heavy metals on its
development. Experiments conducted in artificial environment on the plant,
showed tolerance to high levels of pollution with Zn, Cu.
In our country were not surveyed on Armeria Maritima Willd, with a
single protected area of this type.
Cuvinte cheie: poluarea solului, arii protejate, degradare,
biodiversitate, factori poluanți, metale grele
Keywords: soil, protected areas, degradation, biodiversity, pollutants,
heavy metals

69 INFLUENȚA FACTORILOR POLUANȚI ASUPRA


21-68 EFECTELE POLUĂRII FONICE

NOISE POLLUTION IN CARS CURRENT
The effects of the noise pollution are the infrasound’s, the ultrasounds
and the noises.Mechanical vibrations are transmitted to man are injurious
complex, affecting the health and physiological effects and hindering
(hindering) the process to work up to loss of employment. The most important
effects produced by the vibration action is likely physiological, mechanical and
thermal, mainly being the last two.
Cuvinte cheie: stadiul actual, vibroacustica, sonometre
Keywords: stage, acoustic vibration, sound level meters

68 EFECTELE POLUĂRII FONICE


21-67 OBLIGAŢII ŞI EVOLUŢIE ÎN DOMENIUL DEEE

OBLIGATIONS AND EVOLUTION IN THE WEEE AREA
The prevention of waste electrical and electronic equipment (WEEE)
and the recycling of such wastes lead to the improvement of the environmental
performance of all operators involved in the life cycle of electric and electronic
equipment: producers, distributors, consumers and operators involved in the
treatment of WEEE. In Romania, the collection from private household and the
recycling of WEEE are not undertaken yet to a sufficient extent.
Cuvinte cheie: deşeuri de echipamente electrice şi electronice,
colectare selectivă
Keywords: electrical and electronic waste, separate collection

67 OBLIGAŢII ŞI EVOLUŢIE ÎN DOMENIUL DEEE


21-66 ROLUL NOILOR TEHNOLOGII ÎN REDUCEREA POLUĂRII GLOBALE

ROLE OF NEW TECHNOLOGIES IN DECREASING
GLOBAL POLLUTION
The paper tries to pull an alarm signal about pollution and how affect
that our lives. It is presenting some of the ways to follow in the war against the
pollution.
Cuvinte cheie: poluare, creștere demografică, tehnologii noi, tehnologii
depoluante, sateliți, urmărirea evoluției CO2.
Keywords: pollution, population growth, technology, technology
depolluted, satellites, the progress of CO2.

66 ROLUL NOILOR TEHNOLOGII ÎN REDUCEREA


21-65 EFICIENŢĂ ENERGETICĂ PRIN CONTROL DE LA DISTANŢĂ A INSTALAŢIEI DE ÎNCĂLZIRE PENTRU O CASĂ DE VACANŢĂ

THE ENERGY EFFICIENCY THROUGH CONTROL FROM
DISTANCE OF A HEATING INSTALATION
FOR A HOLIDAY HOME
The option to control efficiently, the heating of a holiday home, from
distance, is a modern method of reducing electricity consumption, leading to
encouraging the more efficient use of energy and to creating a disciplined
behaviour while increasing comfort.
Cuvinte cheie: eficienţă energetică, releu TRC, instalaţie electrică,
casă de vacanţă
Keywords: energy efficiency, TRC relay, electrical installation, holiday
home

65 EFICIENŢĂ ENERGETICĂ PRIN CONTROL DE LA


21-64 STUDIU DE CAZ ASUPRA SISTEMELOR DE RECUPERARE A ENERGIEI ÎN MEDIUL CONSTRUIT, CLĂDIRI INDUSTRIALE PASIVE

CASE STUDY ON REUSEBLE ENERGY SYSTEMS WITHIN
BUILDINLGS, LOW ENERGY INDUSTRIAL CONSTRUCTIONS
In this work are presented the main characteristics of sustainable
energy systems used on buildings, especially on houses. The main point in
these systems is the implementation on larger scale buildings and programs
such as industrial models and factories.
Cuvinte cheie: sustenabilitate, energie regenerabilă, casă pasivă
Keywords: sustainability, renewable energy, passive house

64 STUDIU DE CAZ ASUPRA SISTEMELOR DE


21-63 ANALIZA FACTORULUI DE EFICIENŢĂ AL UNUI CAPTATOR SOLAR

ANALYSIS OF EFFICIENCY FACTOR FOR A SOLAR
COLLECTOR
The paper makes an analysis of the efficiency factor of absorbing
plate to improve the conversion efficiency of solar collector. The functional
characteristics of absorbing plate are presented. It is known that the efficiency
factor depend also on the dimensions and geometry of the absorbing plate. In
the final part of the paper recommendations for improving efficiency factor of a
solar collectors are proposed.
Cuvinte cheie: captator solar, factor de eficienţă, randament,
conversia radiaţiei, energie solară.
Keywords: solar collector, the efficiency factor, yield, conversion of
radiation, solar

63 ANALIZA FACTORULUI DE EFICIENŢĂ AL UNUI


21-62 STUDIU PRIVIND DIMENSIONAREA EFICIENTĂ A SUPRAFEŢEI DE CAPTARE PENTRU UN SISTEM TERMO-SOLAR DE ÎNCĂLZIRE A APEI MENAJERE

STUDY ABOUT EFFICIENT SIZING OF THE TOTAL
COLLECTOR AREA FOR A DOMESTIC SOLAR WATER
HEATING SYSTEM
Sizing a solar water heating system basically involves determining the
total collector area and the storage volume. Hot water demand for a household
over a year can be considered constant. The major problem is determining the
right size for the total collector area avoiding to over and under sizing the
system. The paper analyzes a sizing possibility regarding the efficiency of the
system from an hermetic point of view. The result show the system sized to
ensure hot water demand over the summer period is the most efficient; a
system sized to ensure hot water demand over winter period is oversized and
not efficient.
Cuvinte cheie: energie solară, captator solar, sistem termo-solar,
eficienţa energetică, dimensionare
Keywords: solar, solar collector, solar thermal systems, energy
efficiency, sizing

62 STUDIU PRIVIND DIMENSIONAREA EFICIENTĂ A


21-61 VALORIFICAREA CĂLDURII DIN APELE INDUSTRIALE UZATE

RECOVERY OF HEAT INDUSTRIAL WASTEWATER
Secondary energy resources (RES) with low thermal potential such as
heat from industrial wastewater and exhaust flue gases have substantial energy
content. The current trend to recovery of this RES consist of develop to
researches and plants for electrical power. This paper presents the current
state of energy conversion using organic Ranking cycle (ORC).
Cuvinte cheie: ape uzate industriale, ciclul organic Rankine, resursă
energetică secundară, conversie energie termică, potenţial termic redus
Keywords: industrial wastewater, organic Ranking cycle, secondary
energy source, converting heat, low grade waste heat

61 VALORIFICAREA CĂLDURII DIN APELE


21-60 DETERMINAREA VITEZEI VÂNTULUI PE BAZA VALORILOR MĂSURĂTORILOR EXPERIMENTALE OBŢINUTE DE LA STÂLPI ANEMOMETRICI

DETERMINATION OF WIND SPEED BASED ON
EXPERIMENTAL VALUES OBTAINED FROM
ANEMOMETERS POLES
Initial phase of an investment for a wind farm must contain the exact
wind potential in the target area. Where are used to determine weather features
anemometers poles, can accurately assess the wind potential on top of the pole
and above. Using the experimental values can determine wind speed at heights
above the pole, but it is possible to check the accuracy of function required of
wind velocity with height.
Cuvinte cheie: vânt, viteza vântului, energia şi puterea vântului, funcţia
de variaţie a vitezei vântului, strat limită
Keywords: wind, wind speed, wind energy and power, variation
function for wind speed, boundary layer

60 DETERMINAREA VITEZEI VÂNTULUI PE BAZA


21-59 ENERGII ALTERNATIVE. CONSIDERAŢII PRIVIND UTILIZAREA COLECTORILOR SOLARI CU FOCALIZARE

ALTERNATIVE ENERGIES. CONSIDERATIONS
ON THE USE FOCUSING SOLAR COLLECTOR
This paper presents some aspects of performance increase energy
conversion systems of solar radiation into thermal energy and then electricity.
Concentration of solar radiation is increased flow requirement imposed by solar
radiation incident on the collector.
Cuvinte cheie: colector solar cu focalizare, radiaţie solară incidentă,
reflector solar, receptor, factor de concentrare
Keywords: solar collector focusing incident solar radiation, solar
reflector, receiver, concentration factor

59 ENERGII ALTERNATIVE. CONSIDERAŢII PRIVIND


21-58 CONCENTRATOARE DE RADIAȚIE SOLARĂ PENTRU CONVERSIA HELIOTERMICĂ

CONCENTRATORS OF SOLAR RADIATION FOR
HELIOTHERMIC CONVERSION
Solar energy has the greatest potential of all renewable energy and it
is used in broad areas of activity, especially for hot water production.
Converting solar energy into thermal energy is realized in solar collectors. Solar
radiation reprezent the way to the future world economy.
Cuvinte cheie: radiație solară, colectori, conversie, captatori solari
Keywords: solar radiation, collectors, conversion, solar collectors

58 CONCENTRATOARE DE RADIAȚIE SOLARĂ


21-57 VALORIFICAREA ENERGIEI VALURILOR

WAVE ENERGY RECOVERY
The paper presents the main installations and technologies that are
presently used for wave energy exploitation. The energetic and ecological
advantages of wave energy usage are brought forward. The authors notice the
opportunity of developing wave energy usage in the Black Sea area.
Cuvinte cheie: energia valurilor, potențial energetic, instalații,
oportunități, impact, mediu
Keywords: wave energy, potential energy, facilities, opportunities,
impacts, environmental

57 VALORIFICAREA ENERGIEI VALURILOR


21-56 MULTIPLICATOARELE INSTALAŢIILOR ENERGETICE EOLIENE ( II )

MULTIPLIERS OF THE WIND TURBINES ( II )
This paper emphasizes the changes appeared in the technique of the
wind turbine driving in the last two decades.
Three schemes of multipliers used now are presented and the
calculus elements are done allowing the structural optimization of these
transmissions.
Cuvinte cheie: transmisii eoliene, multiplicatoare eoliene, turbine
eoliene
Keywords: wind gearbox, wind multipliers, wind turbines

56 MULTIPLICATOARELE INSTALAŢIILOR


21-55 MULTIPLICATOARELE INSTALAŢIILOR ENERGETICE EOLIENE ( I )

MULTIPLIERS OF THE WIND TURBINES ( I )
This paper emphasizes the changes appeared in the technique of the
wind turbine driving in the last two decades.
Three schemes of multipliers used now are presented and the
calculus elements are done allowing the structural optimization of these
transmissions.
Cuvinte cheie: transmisii eoliene, multiplicatoare eoliene, turbine eoliene
Keywords: wind gearbox, wind multipliers, wind turbines

55 MULTIPLICATOARELE INSTALAŢIILOR


21-54 ENERGIA EOLIANĂ ÎN CONTEXTUL DEZVOLTĂRII DURABILE

WIND ENERGY IN THE CONTEXT OF SUSTAINABLE
DEVELOPMENT
This work represents the current state of implementation of wind energy
worldwide and especially in our country. Emphasized the benefits and
opportunities this form of renewable energy development with reference to
obligations under the Kyoto Protocol and EU directives. It represents current
technical and economic data.
Cuvinte cheie: energie eoliană, costuri, eficienţă, tendinţă
Keywords: wind power, cost, efficiency, tendency

54 ENERGIA EOLIANĂ ÎN CONTEXTUL


21-53 ASUPRA VALORIFICĂRII ENERGIEI VÂNTULUI ÎN ROMÂNIA

SUR LA VALORIFICATION DE L’ÉNERGIE ÉOLIENNE
EN ROUMANIE
Réorientation des Etats membres de l’UE, dirigée par des énergies
propres, a déterminé les facteurs roumains, de décision, à reconsidérer leur
position sur l’allocation des fonds pour étudier et utiliser de l’énergie éolienne;
la Roumanie ayant l’un de les plus importants potentiel d’énergie éolienne en
Europe. À cet égard, l’ouvrage vient à présente des éléments importants sur le
potentiel de l’énergie de Roumanie, avec l’exemplification pour l’emplacement
de Sulina. Les données contenues dans l’ouvrage ayant conduit à la nécessité
de développer le secteur de l’énergie éolienne, comme source d’énergie
alternative de l’avenir.
Cuvinte cheie: vânt, energie eoliană, curbe de frecvenţă, agregate
eoliene
Mots-clés: courbes de fréquence de l’énergie éolienne du vent, du
vent, les agrégats

53 ASUPRA VALORIFICĂRII ENERGIEI


21-52 CENTRALE SOLARE TERMO-ELECTRICE, UN NOU COMITET TEHNIC INTERNAŢIONAL DE STANDARDIZARE CEI CT 117

SOLAR THERMAL ELECTRIC PLANTS, A NEW TECHNICAL
COMMITTEE, IEC TC 117
The Technical Committee IEC TC 117, Solar Thermal Electric (STE)
Plants will develop standards for the measurements and the evaluation
techniques, security, to respond to the needs of different sector agents.
Cuvinte cheie: energie, energie solară, sisteme fotovoltaice
Keywords: energy, solar energy, photovoltaic systems

52 CENTRALE SOLARE TERMO-ELECTRICE, UN NOU


21-51 OPORTUNITATEA UTILIZĂRII ENERGIEI SOLARE ÎN ROMÂNIA

THE OPPORTUNITY OF USING SOLAR ENERGY IN
ROMANIA
This synthesis presents essentially uses of solar energy and how
solar energy is used with certain conversion technologies. In accordance with
legislation still in force solar energy manufacturers meet certain conditions
benefit from various advantages such as green certificates.
Cuvinte cheie: energie solară, panouri solare, energie termică,
certificate verzi
Keywords: solar energy, solar panels, heat, green certificates

51 OPORTUNITATEA UTILIZĂRII ENERGIEI


21-50 TEHNOLOGIE DE EVALUARE EXPERIMENTALĂ A REZISTENŢEI MECANICE LA SARCINI DE IMPACT A FASCICULULUI COMBUSTIBIL EXPERIMENTAL TIP CANDU

TECHNOLOGY FOR EXPERIMENTAL EVALUATION OF THE
MECHANICAL COMPRESSION RESISTANCE AT IMPACT
LOAD ON CANDU TYPE FUEL BUNDLE
The paper is referring to the test technology evolution of CANDU
experimental fuel bundle at the Institute for Nuclear Research Piteşti. The outof-
reactor test rig and the special devices for evaluation of the nuclear fuel
mechanical resistance performance at dynamic impact load, using light water at
representative parameters (pressure, temperature and flow rate) for CANDU 6
reactor operating conditions, is described.
This paper describes the original improvements implemented and
practically applied to mechanical resistance of carrier fuel bundle validation
technology. Some results and conclusions are presented at the end.
Cuvinte cheie: impact, buclă de testare, simulator adaptor combustibil,
fascicul combustibil de testare, fascicul combustibil transportor
Keywords: impact, loop test, simulator adapter fuel, fuel bundle
testing, fuel transporter beam

50 TEHNOLOGIE DE EVALUARE EXPERIMENTALĂ


21-49 CONSIDERAŢII ASUPRA FRÂNELOR ELECTROMAGNETICE CU FRICŢIUNE ŞI ARCURI DE PRESIUNE (II)

CONSIDERATIONS ABOUT ELECTROMAGNETIC BRAKE
WITH FRICTION AND COMPRESION SPRINGS (II)
The paper presents the basic elements about function of
electromagnetic with friction and compression springs
Cuvinte cheie: frâne electromagnetice
Keywords: brakes

49 CONSIDERAŢII ASUPRA FRÂNELOR


21-48 CONSIDERAŢII ASUPRA FRÂNELOR ELECTROMAGNETICE CU FRICŢIUNE ŞI ARCURI DE PRESIUNE (I)

CONSIDERATIONS ABOUT ELECTROMAGNETIC BRAKE
WITH FRICTION AND COMPRESION SPRINGS (I)
The paper presents the basic elements about function of
electromagnetic with friction and compression springs
Cuvinte cheie: frâne electromagnetice
Keywords: brakes

48 CONSIDERAŢII ASUPRA FRÂNELOR


21-47 ÎMBUNĂTĂŢIREA INDICATORILOR CALITATIVI DE UTILIZARE A ENERGIEI ELECTRICE LA CAE

INDICATORS QUALITATIVE IMPROVEMENT
OF ELECTRICAL ENERGY AT EAF
Electric arc furnace is one of consumers who have negative effects in
terms of the circulation of reactive power, un-balance consumer, and harmonics
injected into the network.
Cuvinte cheie: cuptor electric cu arc, instalaţie de compensare, factor de
putere, filtrare a curenţilor armonici
Keywords: electric arc furnace, air compensation, power factor, filtering
of harmonic currents

47 ÎMBUNĂTĂŢIREA INDICATORILOR CALITATIVI DE


21-46 UTILIZAREA MAṢINII ASINCRONE ÎN ACŢIONAREA HIBRIDᾸ ṢI PUR ELECTRICᾸ A AUTOMOBILELOR

ASYNCHRONOUS MOTOR UTILISATION IN HYBRID AND
ELECTRICAL VEHICLES
The performance and fuel economy of a fuel cell powered vehicle [1]
are greatly improved by the use of a hybrid drive train. The hybridization allows
taking full advantage of the fuel cell system efficiency characteristics.
The fuel cell is thus operated at average power demands where it is
the most efficient, while the batteries supply the traction motors at low power
demands and assists the fuel cell at high power demands.
One investigates the possible fuel cell hybrid drive trains and
compares on the grounds of fuel economy and feasibility. Then, based on the
conclusions of this first analysis, a discussion of the most suitable electric
motors will follow.
Then it is presented a solution based on the asynchronous motor,
highlighting it’s advatages over other types of drives.
The Induction Motor (IM) is, without any doubt, the workhorse in
industry due to its ruggedness, simple technology and low cost. During the last
decade, the induction motor has been replaced in many variable speed drives
by the Permanent Magnet (PM) motor since the PM machine has better
efficiency and higher torque density [2]. That was possible also due to a
significant reduction of the magnets cost that happened in the past.
The goal of the paper is to investigate the possibility to use the FVC(Flux
Vector Control) for induction motors in traction applications.
Cuvinte cheie: automobil electric, lanț de transmisie, maşină asincronă
Keywords: electric car, chain transmission, asynchronous machine

46 UTILIZAREA MAṢINII ASINCRONE ÎN ACŢIONAREA


21-45 INTENSITATEA CÂMPULUI ELECTRIC ŞI TENSIUNEA DE DESCĂRCARE ÎNTRE ELECTROZII ELECTROFILTRELOR INDUSTRIALE CU PLĂCI

THE ELECTRIC FIELD STRENGTH AND DISCHARGE
VOLTAGE BETWEEN THE ELECTRODES OF INDUSTRIAL
PLATE-TYPE ELECTROSTATIC PRECIPITATOR
This paper presents an analysis on discharge wires and collecting plates
used at industrial plate-type electrostatic precipitators. Electric field strength is
presented (maximum and mean value) and discharge voltage, that voltage
depends on the gas properties and the product between the pressure and
distance.
Cuvinte cheie: electrofiltre cu plăci, intensitatea câmpului electric,
tensiunea de descărcare
Keywords: electrostatic plate, electric field strength, the discharge
voltage

45 INTENSITATEA CÂMPULUI ELECTRIC ŞI TENSIUNEA


21-44 MODELAREA CÂMPULUI ELECTROMAGNETIC UTILIZÂND POTENŢIALUL VECTOR

ELECTROMAGNETIC FIELD MODELLING
USING VECTOR POTENTIAL
This paper deals with modeling the electromagnetic field through the
vector potential. Appealing to Maxwell’s equations, field modeling provides a
tool for further investigation to study the magnetic field for RFID reader-tag
systems. The results from this article will be used in other workpaper which
treats a practical RFID system.
Keywords: RFID system, electromagnetic field, vector potential, field
modelling
Cuvinte cheie: sistem RFID, câmp electromagnetic, potenţial vector,
modelare de câmp

44 MODELAREA CÂMPULUI ELECTROMAGNETIC


21-43 MODELAREA DE CÂMP A UNUI SISTEM READER-TAG RFID

FIELD MODELLING OF A RFID READER-TAG SYSTEM
Determination of the magnetic field at large distances from the dipole,
uses specific and distinguishable models from case which calculation is made
for nearby points. The two situations are treated through distinctly ways in this
paper. The results from this article will be used directly into design a magnetic
field modelling for RFID reader-tag systems.
Cuvinte cheie: sistem RFID, câmp electromagnetic, potenţial vector,
modelare de câmp
Keywords: RFID system, electromagnetic field, vector potential, field
modelling

43 MODELAREA DE CÂMP A UNUI SISTEM


21-42 MANAGEMENTUL ENERGIEI – ACTIVITATE DE STANDARDIZARE

ENERGY MANAGEMENT –STANDARIZATION ACTIVITY
This paper presents european and international standardization
activity regarding energy management, quality of auditing process and
standardization needs related to EU energy legislation, policy targhets and
market developments
Cuvinte cheie: management, energie, benchmarking, audit
Keywords: management, energy, benchmarking, audit

42 MANAGEMENTUL ENERGIEI – ACTIVITATE