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Photovoltaic technologies ensure the security and diversity of the energy supply without any negative impact on the environment, playing an important role in the production of electricity. At the moment photovoltaic systems oriented to energy performance have a relatively low efficiency, in contrast to the types and technologies of PV, but also the context of their use. The performance in terms of efficiency and long-term electricity generation depends on the current voltage parameters that differ depending on the...

The wastewater sector of buildings in the residential or industrial sector throughout the world is of particular importance, in accordance with the strict, complex environmental legislation regarding waste water treatment. However, a major fundamental problem is wastewater from hospitals, due to dangerous antibiotic-resistant bacteria, which present a high risk of even previously treated water contamination, which prove to be useless or even inadequate, with the risk of spreading resistant bacteria much faster and...

The basic influence is consisted from the value chain of products and services which is expanding globally. Business collaboration requires the security of electronic communications in an open and distributed environment. In this respect, electronic documents are required as proof of business communication, in the meantime requiring legal evidence or legal force. At present, even if electronic documents are properly communicated in commercial transactions, the final data about property transaction must be on paper...

Heritage historic buildings are often wasteful in terms of energy efficiency. Changing their energy supply, load and consumption is particularly challenging given that heritage needs protection and interventions on the building architecture are limited. From the point of view of the renewable energy sources integration in historical buildings, the aesthetic aspects are very important and due to this reason, modern systems can be ruled out. However, the energy efficiency challenges imposed by today's society can be...

The ambient temperature inside a building is essential for occupant comfort, and it influences directly the interior microclimate. Keeping the inner temperature at an optimum value involves energy consumption for heating and cooling. Energy consumption can be reduced by integrating phase change materials into the structure of the building. In thermal regime, with the integration of phase change materials, an integration model based on a mathematical method suitable for a thermal process analysis is described. This...

The evaluation of the catalog parameters of the voltage, the current of a PV module is essential in the design and implementation of photovoltaic systems, the reference parameters differ depending on the temperature of the operating cells and the different levels of radiation. The analytical methodology was the basis for creating a characteristic model for modeling a cell or a photovoltaic module in Matlab/ Simulink, using cell data at STC, considering standard global radiation G = 1000 W/ m2, the operating temper...

The buildings sector currently consumes between 30% and 40% of the total energy produced in the developed countries while contributing over 35% of the total carbon emissions, most of them being built without taking into account passive strategies as well as the integration of renewable energy resources RRE. Given that the technology of solar energy is constantly increasing, adapting continuously to existing solutions is necessary. In this paper we approach the implementation of solar technologies, taking into acco...

This paper aims to provide an overview of the technologies of passive heating and cooling by using phase change materials, integrated in the interior elements of constructions, to ensure the energy efficiency and the reduction of carbon dioxide emissions from buildings, approaching in at the same time the new and existing buildings. Considering that ensuring the internal thermal comfort of the occupants requires high energy consumption, the use of phase change materials by creating a passive energy storage system ...

This paper aims to provide an overview of the technologies for the use and implementation of phase change materials, with the purpose of identifying possible applications in energy efficiency, reducing energy losses and reducing carbon dioxide emissions, while bringing a contribution in identifying the applications in the design of passive houses regarding the reduction of the overheating phenomenon. A passive house can be defined as an energy efficient construction, which ensures an optimal indoor microclimate bo...