scholarly journals Field research on occupants’ behavior related to energy consumption in Mediterranean area

2018 ◽  
Author(s):  
Nikolina Pivac ◽  
◽  
Sandro Nižetić ◽  
Vlasta Zanki ◽  
Agist Papadopoulos ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Field Research ◽  
Mediterranean Area

Data Center Room Air Conditioning Energy Consumption Analysis

2014 ◽  
Vol 672-674 ◽  
pp. 518-521
Author(s):  
Li Fei Song ◽  
Tao Li ◽  
Qi Fen Li ◽  
Lin Hui Zhao ◽  
Xin Zhao ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Energy Conservation ◽  
Energy Saving ◽  
Data Center ◽  
Air Conditioning ◽  
Field Research ◽  
Northern China ◽  
Air Conditioning System ◽  
Energy Consumption Analysis ◽  
Energy Saving Technology

In this paper, the Unicom's medium-sized IDC room in a city of northern China is the research object for the study. Based on field research of the room refrigeration conditions, data center room air conditioning system is carried out to optimize and for energy conservation research. Through the analytic methods of energy saving-technology, the best energy saving solutions is explored.

scholarly journals Design of a photovoltaic power plant connected to the grid to cover the daytime energy demand of the Jenmer cia ltda service station

2021 ◽  
Vol 7 (1) ◽  
pp. 10-24
Author(s):  
Antonio Vázquez Pérez ◽  
Fabián Ignacio Carpio Zambrano ◽  
Alcira Magdalena Velez Quiroz ◽  
Gino Mieles Mieles ◽  
Carlos Gustavo F. Villacreses Viteri
Keyword(s):  
Energy Consumption ◽  
Energy Demand ◽  
Low Voltage ◽  
Field Research ◽  
Service Station ◽  
Photovoltaic Power ◽  
Electricity Bill ◽  
Photovoltaic Technology ◽  
Photovoltaic Plant

The work presents an analysis linked to one of the sustainable energy alternatives that are currently being adopted with success worldwide. Putting the field research method into practice, the results of a study related to an application of technological innovation are shown to reduce the amount of the electricity bill at the JENMER CIA LTDA Service Station, through the introduction of photovoltaic technology connected to the low voltage network of the institution. The results of the study of load and hourly energy consumption of said entity are shown and its methodology is deployed for the technological design of a photovoltaic plant connected to the grid, which can avoid the energy consumption of the conventional grid, reducing the amount of the electricity bill of the institution, at the same time that it is possible to reduce losses, improve the quality of electricity service and reduce COemissions2 into the atmosphere. The energy, economic, environmental, and social impacts associated with the penetration of photovoltaic technology are exposed.

scholarly journals Study of the Improvement on Energy Efficiency for a Building in the Mediterranean Area by the Installation of a Green Roof System

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1246 ◽  
Author(s):  
Elisa Peñalvo-López ◽  
Javier Cárcel-Carrasco ◽  
David Alfonso-Solar ◽  
Iván Valencia-Salazar ◽  
Elias Hurtado-Pérez
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Demand ◽  
Simulation Analysis ◽  
Green Roof ◽  
Mediterranean Area ◽  
Substantial Improvement ◽  
Winter Period ◽  
Reduction Of Energy Consumption ◽  
Heating Energy Demand

Rooftop gardens ona building have proved to be a good way to improve its storm water management, but many other benefits can be obtained from the installation of these systems, such as reduction of energy consumption, decrease of the heat stress, abatement on CO2 emissions, etc. In this paper, the effect from the presence of these rooftop gardens on abuilding’s energy consumption has been investigated by experimental campaigns using a green roof ona public building in a Mediterranean location in Spain. The obtained results demonstrate a substantial improvement by the installation of the green roof onthe building’s cooling energy demand for a standard summer day, in the order of 30%, and a reduction, about 15%, in the heating energy demand for a winter day. Thus, given the longer duration of the summer conditions along the year, a noticeable reduction on energy demand could be obtained. Simulation analysis, using commercial software TRNSYS code, previously calibrated using experimental data for typical summer and winter days, allows for the extrapolation to the entire year of these results deducing noticeable improvement in energy efficiency, in the order of 19%, but with an increase of 6% in the peak power during the winter period.

scholarly journals Environmental impact of photovoltaic solar technology

2021 ◽  
Vol 5 (1) ◽  
pp. 14-25
Author(s):  
Telly Yarita Macías Zambrano ◽  
Yoan Pablo Rodríguez Monier ◽  
Jean Telmo Mendoza Mera ◽  
Carmen Magdalena Mero Alcivar ◽  
Anita dolores zambrano Valencia ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Technological Innovation ◽  
Research Method ◽  
Field Research ◽  
Environmentally Sustainable ◽  
Electricity Bill ◽  
Local Teacher ◽  
Photovoltaic Technology ◽  
Photovoltaic Plant

The work presents an analysis linked to one of the environmentally sustainable energy alternatives that are currently being adopted with success Worldwide. Putting the field research method into practice, the results of a study related to an application of technological innovation are shown to reduce the amount of the electricity bill of a local teacher, through the introduction of photovoltaic technology connected to the low grid. Institution tension. The results of the load study and hourly energy consumption of said entity are shown and its own methodology is deployed for the technological design of a photovoltaic plant connected to the grid, which can avoid the energy consumption of the conventional grid, reducing the amount of the institution's electricity bill, at the same time that it is possible to reduce losses, improve the quality of electricity service and reduce COemissions2 into the atmosphere. The environmental and social impacts associated with the penetration of photovoltaic technology are exposed.

Prediction of Liquid Viscosity Effect on Flow Field and Performance in a Solid-Liquid Hydrocyclone

2011 ◽  
Vol 317-319 ◽  
pp. 401-404 ◽  
Author(s):  
Ding Feng ◽  
Si Huang ◽  
Li Luo ◽  
Wei Guo Ma
Keyword(s):  
Energy Consumption ◽  
Flow Field ◽  
Convenient Method ◽  
Field Research ◽  
Liquid Viscosity ◽  
Viscosity Effect ◽  
Viscosity Increase ◽  
Two Phases ◽  
And Performance ◽  
Solid Liquid

Many factors can have effect on flow field and performance, which makes the hydrocyclone design a complex work. Liquid’s viscosity is one of these factors, but it is costly and almost impossible to investigate how the liquid viscosity influences the performance of the hydrocyclone by test or experiment. At present, CFD technique provides us a convenient method for the flow field research in the hydrocyclone. This paper, intended to explore the effect of liquid’s viscosity on the flow field and hydrocyclone’s efficiency, presents a simulation to model the flow field in the hydrocyclone by changing the viscosity of the liquid. By comparing the results of the simulation, it is found that liquid with higher viscosity can reduce the velocity of the flow because of the friction between flow and wall and the friction between the two phases. Furthermore, viscosity increase of the liquid enlarges the area of shot flow and circulating flow, which make separating efficiency decrease and energy consumption rise.

scholarly journals Seasonal Analysis Comparison of Three Air-Cooling Systems in Terms of Thermal Comfort, Air Quality and Energy Consumption for School Buildings in Mediterranean Climates

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4436
Author(s):  
María Jesús Romero-Lara ◽  
Francisco Comino ◽  
Manuel Ruiz de Adana
Keyword(s):  
Energy Consumption ◽  
Air Quality ◽  
Thermal Comfort ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Mediterranean Area ◽  
Climatic Conditions ◽  
Air Cooling ◽  
Cooling Systems ◽  
Climate Zones

Efficient air-cooling systems for hot climatic conditions, such as Southern Europe, are required in the context of nearly Zero Energy Buildings, nZEB. Innovative air-cooling systems such as regenerative indirect evaporative coolers, RIEC and desiccant regenerative indirect evaporative coolers, DRIEC, can be considered an interesting alternative to direct expansion air-cooling systems, DX. The main aim of the present work was to evaluate the seasonal performance of three air-cooling systems in terms of air quality, thermal comfort and energy consumption in a standard classroom. Several annual energy simulations were carried out to evaluate these indexes for four different climate zones in the Mediterranean area. The simulations were carried out with empirically validated models. The results showed that DRIEC and DX improved by 29.8% and 14.6% over RIEC regarding thermal comfort, for the warmest climatic conditions, Lampedusa and Seville. However, DX showed an energy consumption three and four times higher than DRIEC for these climatic conditions, respectively. RIEC provided the highest percentage of hours with favorable indoor air quality for all climate zones, between 46.3% and 67.5%. Therefore, the air-cooling systems DRIEC and RIEC have a significant potential to reduce energy consumption, achieving the user’s thermal comfort and improving indoor air quality.

scholarly journals An annotated checklist and bibliography of the Diaptomidae (Copepoda, Calanoida) of Italy, Corsica, and the Maltese islands

2021 ◽  
Author(s):  
Giuseppe Alfonso ◽  
Fabio Stoch ◽  
Federico Marrone
Keyword(s):  
Species Richness ◽  
New Species ◽  
Current Knowledge ◽  
Field Research ◽  
Mediterranean Area ◽  
Maltese Islands ◽  
The Family ◽  
High Species Richness ◽  
The Mediterranean ◽  
Annotated Checklist

Calanoids of the family Diaptomidae are the most widespread copepods in the lentic inland waters of the Palearctic region. In Italy, studies on the family date back to the end of 19th century. Since then, several papers contributed to increasing the knowledge on their presence, distribution, and ecological preferences. Nevertheless, new records for the area and the discovery of putative new species stress that the current knowledge on these inland water crustaceans is still far from being exhaustive. This paper presents an updated and annotated checklist and bibliography of the Diaptomidae of the Italian peninsula and surrounding islands, including Corsica and the Maltese islands, compiled through a critical review of the existing literature and carrying out further field research. The doubtful records reported in the literature are discussed and clarified. The updated checklist includes 30 diaptomid species and subspecies; among them, an alien species and three putative new species pending formal description are reported. About 20% of the observed species are endemic or subendemic to the study area. The faunal provinces ascribed to the Mediterranean limnofaunistic region host the highest species richness and contribute to the checklist with rare species and unique occurrences. The high species richness observed in the Mediterranean area supports the hypothesis of a long-lasting persistence of an ancient and peculiar copepod fauna.

The zoonotic potential of bat-borne coronaviruses

2020 ◽  
Vol 4 (4) ◽  
pp. 365-381
Author(s):  
Ny Anjara Fifi Ravelomanantsoa ◽  
Sarah Guth ◽  
Angelo Andrianiaina ◽  
Santino Andry ◽  
Anecia Gentles ◽  
...  
Keyword(s):  
Genetic Material ◽  
Field Research ◽  
Sympatric Species ◽  
Animal Origin ◽  
Mammalian Host ◽  
Past Century ◽  
The Past ◽  
Novel Host ◽  
Horseshoe Bat ◽  
Human Infections

Seven zoonoses — human infections of animal origin — have emerged from the Coronaviridae family in the past century, including three viruses responsible for significant human mortality (SARS-CoV, MERS-CoV, and SARS-CoV-2) in the past twenty years alone. These three viruses, in addition to two older CoV zoonoses (HCoV-229E and HCoV-NL63) are believed to be originally derived from wild bat reservoir species. We review the molecular biology of the bat-derived Alpha- and Betacoronavirus genera, highlighting features that contribute to their potential for cross-species emergence, including the use of well-conserved mammalian host cell machinery for cell entry and a unique capacity for adaptation to novel host environments after host switching. The adaptive capacity of coronaviruses largely results from their large genomes, which reduce the risk of deleterious mutational errors and facilitate range-expanding recombination events by offering heightened redundancy in essential genetic material. Large CoV genomes are made possible by the unique proofreading capacity encoded for their RNA-dependent polymerase. We find that bat-borne SARS-related coronaviruses in the subgenus Sarbecovirus, the source clade for SARS-CoV and SARS-CoV-2, present a particularly poignant pandemic threat, due to the extraordinary viral genetic diversity represented among several sympatric species of their horseshoe bat hosts. To date, Sarbecovirus surveillance has been almost entirely restricted to China. More vigorous field research efforts tracking the circulation of Sarbecoviruses specifically and Betacoronaviruses more generally is needed across a broader global range if we are to avoid future repeats of the COVID-19 pandemic.

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