Romanian Academy of Technical Sciences (ASTR)

18 Oct A numerical solution for a plane problem of elasticity

Romanian Academy of Technical Sciences (ASTR)
2013
Plane elasticity problems which fulfil the solving requirements with the help of the biharmonic equation of plane elasticity can be solved, in many cases, using the integration of the equation with finite differences method. In this paper is presented an extension of the field of application of this equation in double conex domains (octogonal diaphragm with a central square gap).
Read More

18 Oct Considerations regardind the mathematical, technical and business management components of engineering education / Consideraţii privind componentele: matematică, tehnică şi management ale educaţiei inginereşti

Romanian Academy of Technical Sciences (ASTR)
2013
The engineering education has necessarily to include a significant part of Mathematics, Physics, general technics and business management besides speciality knowledge, in a dynamical, interacting complex. As a conceiver and producer of goods, the engineer finds himself at a beginning of chain; he also must have in mind and influence the middle and the end of chain containing the evaluation on market.
Read More

17 Oct Urban electric transport in large urban areas. Present and future prospects / Transportul electric urban in marile aglomerari urbane. Prezent si perspective

Romanian Academy of Technical Sciences (ASTR)
2012
The work analyses the policies developed within the EU on public transport in large urban areas, the benefits from the “electrification” of transport means in terms of reducing pollution and increasing energy efficiency.
Read More

17 Oct The use of natural agents and renewable and recoverable energy sources in refrigeration and climate conditioning facilities / Utilizarea agenţilor naturali şi a surselor de energie regenerabile şi recuperabile în instalaţiile frigorifice şi de climă

Romanian Academy of Technical Sciences (ASTR)
2012
This paper attempts to examine the issue of air conditioning which must meet the following requirements: to conserve the energy, to protect the environment and to be compact as geometry. For this purpose are presented air conditioning refrigeration systems that use renewable energy sources (solar energy), natural refrigerants for environment protection, under international norms and compact heat exchangers (plate, microchanels).
Read More

17 Oct Prospects for renewable energies via hydrogen for a sustainable urban transport / Prospecţii privind utilizarea energiilor regenerabile via hidrogen pentru un transport urban sustenabil

Romanian Academy of Technical Sciences (ASTR)
2012
The aim of this paper is to give a snapshot of the possibility to introduce hydrogen into urban mobility in spite of the still existing technological drawbacks. A case study analyses, for a given situation, is proposed to be elaborated as an experimental application.
Read More

17 Oct The city of alternative energy

Romanian Academy of Technical Sciences (ASTR)
2012
Our paper presents general aspects regarding renewable energy and its technologies. We are summarizing and comparing the characteristics of the five existing energy sources: photovoltaic, wind, geothermal, bioenergy and tidal energy.
Read More

17 Oct Hydropower – essential component in the mix of renewable energies / Hidroenergia – componentă esenţiala în cadrul surselor de energie regenerabilă

Romanian Academy of Technical Sciences (ASTR)
2013
The paper deals with the hydropower development having in mind that water is a strategic resource, requires to be nationally managed based on sustainable development principles, according to an unitary legal framework.
Read More

17 Oct Heat island mitigation in urban environments through green surfaces integration in the building envelope / Diminuarea efectelor insulei de căldură în aglomerările urbane utilizând soluţii specifice clădirilor verzi

Romanian Academy of Technical Sciences (ASTR)
2013
This paper supports the validity of green surface integration solutions by analyzing their effects on indoor climate, in comparison with conventional systems. The analysis is based on computer simulated models of the heat transfer phenomena under variable conditions, with respect to external climatic parameters influenced by the Heat Island effects.
Read More

17 Oct Innovative CAE / testing solutions for wind turbines

Romanian Academy of Technical Sciences (ASTR)
2013
The authors present the development of a consistent modeling and simulation approaches to correctly describe the realistic behavior of wind turbines. The Hybrid Engineering allows simulation and optimization of the performance of mechanical systems for structural integrity, noise and vibration, acoustics, system dynamics and durability, from the initial concept to the complete modeling and simulation of components and the full wind turbine.
Read More