ENTROPIATION AND HUMAN ACTIVITY
The universe can be seen as a complex thermodynamic system, build from a lots of small or bigger thermodynamic systems. Generally the greatest urbane throngs are characterized by a large number of motor vehicles. The lots of motor vehicles from the big cities can be seen as a thermodynamic system which interferes with the environing system. This interaction vehicle-environment and other systems interaction which generates energy-environment are discussed on the base of entropy in this paper.
Keywords: thermodynamics, entropy, second law of the thermodynamic
Cuvinte cheie: termodinamică, entropie,schimb de căldură
ENTROPIATION AND HUMAN ACTIVITY
REALIZATION OF AN ELECTRICALLY INSULATING
DEVICE FROM COMPOSITE MATERIALS
The objective of this article is to present the final achievement of an electrical insulator, from composite materials. The composite material was selected after painstaking studies, which they duly designated for that purpose.
Keywords: composite materials, electrically insulating devices
Cuvinte cheie: materiale compozite, izolatoare electrice
ENERGY MANAGEMENT IN ROMANIA
January 2017 was a month of authentic winter in Romania. But this winter has revealed the real state of energy management in our country. This article represents the thoughts and concerns of „ordinary mans” related to the management of energy in Romania.
Keywords: thermal energy, electricity, energy management
Cuvinte cheie: energie termică, energie electrică, gospodărirea energiei
THERMAL REHABILITATION OF COLLECTIVE DWELLINGS –
PRESENT AND FUTURE DEVELOPMENTS
This paper makes an analysis over the thermal rehabilitation process
in Romania taking in consideration existing and future developments. Today’s
national financing programs do not offer a sustainable answer to the CO2
emission reduction goal due to the fact that this is a punctual solution and offer
small improvement for interior comfort of dwellings and energy savings.
Keywords: economic viability, cost standards, thermal insulation
Cuvinte cheie: viabilitate economică, standarde de cost, reabilitare
INFLUENCE OF INTERFACE BATCH/MATRIX COMPOSITE
MATERIALS ON MECHANICAL PROPERTIES
The objective of this article is to present the means used for
experimental characterization of materials studied, the manufacturing process of
composite materials, specimen’s preparation test for metal surfaces required for
imaging by electron microscopy, and behavior analyzing interface/matrix.
Keywords: composite materials, resins, kaolin
Cuvinte cheie: materiale compozite, rășini, caolin
REHABILITATION MEASURES FOR COLLECTIVE DWELLINGS – T770 MODEL
In this work are presented the measures needed to obtain a complete rehabilitation of collective dwellings constructed between 1978 until 1989. For a complete rehabilitation it is necessary to take into account the following measures: thermal rehabilitation of the envelope, replacement of all internal installations and equipment, upgrade of heating system, the introduction of a new staircase in order to accommodate an elevator and the integration of a multifunctional space on the terrace of the last level.
Keywords: sustainability, renewable energy, rehabilitation
Cuvinte cheie: sustenabilitate, energie regenerabilă, reabilitare
ECONOMIC VIABILITY OF RETROFIX COMPLETE
SYSTEM’S REHABILITATION MEASURES
FOR COLLECTIVE DWELLINGS
Following the RETROFIX rehabilitation measures, the comparison study between classic thermal rehabilitation and RETROFIX systems on the economic viability shows that, if you invest more money in superior efficiency system, you can obtain relatively good savings on energy.
Keywords: economic sustainability, renewable energy, rehabilitation
Cuvinte cheie: viabilitate economică, energie regenerabilă, reabilitare
EXPERIMENTAL STUDY OF THE DIELECTRIC
BEHAVIOR OF DIGLYCIDYL ETHER
OF BISPHENOL ”A” CHARGED
Subject reinforced composite materials are extensively investigated in recent years. This study is deepened to improve the structural and dielectric characteristics of diglycidyl ether of bisphenol A (DEGBE). Dielectric properties were analysed for each batch of material. Microcompozite epoxy samples with good dispersion of nano – particles laden epoxy matrix was prepared and experienced for the dielectric constant (C) , resistance (R ) and impedance (Z) frequency (1kHz, 10kHz) . Measurements were made using a dielectric spectoscropia plateau temperature range of between 20-80 °C . The better dielectric properties of the material corresponding to the nano – fillers in a concentration of 30 % .
Keywords: DGEBA, pozzolan, dielectric constants, microstructure
Cuvinte cheie: DGEBA, rocă vulcanică, constanta dielectrică, microstructură
ENGINEERING AND RISK MANAGEMENT
IN INDUSTRIAL PROCESSES
The objectives of the company require knowledge and multiple risk taking. Risk management process consists of three stages: risk identification, risk analysis and response to risk. Identification of risk is achieved by making checklists, organizing meetings risk identification and analysis of archived documents. Risk analysis using methods such as determining the expected value, Monte Carlo simulation and decision trees. Responding to include measures and actions for risk reduction or elimination of risk allocation .
Keywords: Engineer, Risk management, Industrial processes, Standards
Cuvinte cheie: inginerie, managementul riscului, procese, standarde
COLLECTIVE DWELLING – BETWEEN REGENERATION
Energy efficiency has become a really important aspect of building
management. Older residential buildings cannot sustain high energy efficiency
due to lack of automatisation and depassed plumbing. This work presents an
alternative to existing energy management system for existing dwellings.
Keywords: Sustainability, Renewable energy, Housing, Rehabilitation
Cuvinte cheie: sustenabilitate, energie regenerabilă, locativ, reabilitare
INCREASE PRODUCTIVITY AND REDUCE ELECTRICITY
LOSSES BY OPTIMUM SOLUTIONS FOR WIND ENERGY
Decentralized energy production, currently receiving a very important
development, applicable in various industries. It covers a huge range of power
from a few kW to tens of MW. What to do is to find as many injection points in
the low voltage network. In this article we present a detailed study of the
performance of energy systems to produce electricity by using wind energy and
optimization solutions to reduce costs.
Keywords: Energy, Wind Energy, Green Energy
Cuvinte cheie: energie, centrale eoliene, energie verde
CASE STUDY ON SYSTEMS BRAKING ENERGY
RECOVERY USED IN HYBRID VEHICLES
In this work are presented the main characteristics of regenerative
brake systems used on hybrid and electric cars. The main points in these
systems are studied functional characteristics in the specific case of a midsize
car with the parallel-hybrid system.
Keywords: hybrid system, electric car
Cuvinte cheie: sistem hibrid, automobil electric
ECONOMICHAL EVOLUTION OF ROMANIA
Before and after EU accession, statistics show a modest position of
Romania in the EU and its lack of improvement over time, the absolute value of
GDP/capita (taken in $), the relative value of GDP/inhabitant (considered as %
of EU average) and, worse, a worsening world order number NOM, i.e. the
number of orders in the list of world states considered in descending order of
GDP/capita. The situation can be explained by statistical data on the number of
international patents for invention obtained by each country. Currently have
GDP/high only countries that have large natural resources and capitalizes
intensive, especially those related to the number of inhabitants, have many
international patents. Romania last in EU is the U.S. patents and European
patents. Details given this situation, the paper indicates only way to improve the
Cuvinte cheie: produs intern brut pe cap de locuitor, nivel de trai, brevet
Keywords: gross domestic product per capita, standard of living, patent
ACHIEVEMENTS OF GERMAN ENERGETICS,
POTENTIAL TARGETS FOR ROMANIAN ENERGETICS
It often uses the phrase „Germany, the locomotive of the European
economy”. I think this phrase can be used also in energy. How German
technical literature is not widely accessible in Romania, by German energy
embodiments presented in this paper I wish to make they known to Romanian
widest possible audiences.
Cuvinte cheie: energie, centrale termoelectrice, energie verde
Keywords: Energy, Power Plants, Green Energy
ESTIMATION METHOD OF MAINTENANCE INTERVALS
AND TO REDUCE ENERGY CONSUMPTION
IN PROCESS EQUIPMENT
Complex technical systems are subject to inherent failures caused by
failure of equipment components in different phases of their operation. The
existence of a database on the history of operation of each piece of equipment
is absolutely necessary given that wants to establish a optimal maintenance
schedule so as to avoid the occurrence of failures due to degradation over time
components. This paper proposes a method for calculating the rate of
occurrence of disposals due to wear (degradation time) or instant accident
where an installation of process equipment.
Cuvinte cheie: mentenanţă, uzură, predicţie
Keywords: Maintenance, Wear out, Prediction
INDUSTRIAL SITES BETWEEN RENOVATION
In this work are presented the main characteristics of how to transform
an industrial site into a sustaineble community or industrial entity without
affecting building character. Keeping an identity to a site helps preserve the
history. A well built community relies on sustainebility of it’s interventions and
on it’s inhabitants.
Cuvinte cheie: sustenabilitate, energie regenerabilă, reconversie
Keywords: sustainability, renewable energy, industrial conversion
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
For a number of complex processes such as the case treated in this
paper cold drawing, the simulation program requires a number of simplifications
of the elements that made this process.
Cuvinte cheie: ambutisare, simulare numerică, elemente finite
Keywords: drawing, numerical simulation, finite element