Churches Heating: The Optimum Balance Between Cost Management and Thermal Comfort

AbstractIn this paper is presented a numerical and cost benefit approach of the indoor climate environment created inside of a historical Roman-Catholic church that will be subjected to restoration in the near future. The heating system used in present is with static heaters. The numerical model has as proposes to subject to comparison another heat system: floor heating and mechanical ventilation system in order to have a better understanding of the differences between them and the economical implication of this changes. Historical buildings and churches constitute a problem because they have enormous volumes and the envelope has a low efficiency. From the economical point of view, the solution must the feasible. The comparative results showed that the existing heating system is inefficient and has a lot of damage for the artworks and the painting inside the church

Development of Explosive Power to Students with Specific Means of Volleyball Game

AbstractDevelopment of explosive power to students in medicine field represents a challenge for teachers, which leads us to address this issue through a study highlighting the importance of playing volleyball in achieving these goals. The purpose of this research is to follow and to establish a methodological system of operating, with specific means of voleyball game and implementation this in academic teaching activities in physical training, in order to develop the driving ability in general and of explosive power in particular. The research was performed on two groups of students. The experimental group is made of 44 (female) students, I-st year, at Medicine Faculty. The control group is made of 51 (female) students, I-st year, at at Medicine Faculty. The research has been made within October 1st, 2013 – February 28, 2014. For experimental group, the process of teaching activities consisted of introducing in physical training, some elements and technical procedures belonging to voleyball game. For control group, in order to develop the explosive power, it has been operating exclusively with specific means belonging to other sport branches, than voleyball. For measuring the explosive power it has been used the standing long jump. Research methods used in the present study, were the following: self observation method, observation method, psychological and pedagogical experiment, communication method, documents research method, organizing and presenting data, statistical graphs, determination of statistical indices, comparing/reporting. Due to experimental intervention, values of explosive power registered at final test of Experimental group, increased significantly compared to initial test executed at the beginning of first semester of academic year 2013/2014. By analizing the results of the research, we can issue the conclusion that, the voleyball game may represent an alternative mean of developing the explosive power to students. Due to that, we reccomend using the academic teaching activities in physical training, of sports games in general and voleyball in particular

La Grande Guerre dans les Balkans: regards croisés, perspectives comparées

International audienc

Thermal Comfort Modeling of a Church Heated with Static Heaters

This paper evaluates a static heating system from a church. They are presented in almost every church. Temperature distribution in the church is done in 2d plane. The simulation is presented on a particular example, the Dormition of the Mother of God Church from Jassy, Romania. The heating system had been simulated in FLUENT and the consequences over the interior climate in the church are showed. An important issue is the impact of this system over the artwork, the church being rise in XVIII century

Indoor Climate Simulation in a Church During Winter Season

In the paper is presented a heating system installed in church and the interior climate generated. Thermal Comfort is the purpose of each designer, since the design stage and has to be ensure for the churchgoers, but even for the interior finishes. The heating system that uses hydronic radiators is evaluated trough the CFD modelling, in order to evaluate pro and contra arguments. The simulation has been made in a 3d simulation software environment, in Autodesk CFD with good results

Carbonaceous Nanostructures Obtained by Hydrothermal Conversion of Biomass

By thermal treatment of biomass, different types of biochar can be produced, like carbon [...

The Indoor Climate Modelling and the Economic Analysis Regarding the Energetic Rehabilitation of Church

The paper describes the behaviour of a heating system with radiators in a cult building. There has commonly used in many churches with many shortcomings. The temperature distribution in the analysed space is simulated in 2D. The simulation is based on an example, the Cathedral of the Assumption of the Virgin Mary in Jassy. The heating system with radiators simulated with the FLUENT program, the results being edifying for the factual state of the building. An important aspect is the impact of these heating systems on the works of art, the church being the 18th — century edifice. Current environmental issues lead to the continuous development of technologies used to reduce primary energy consumption. Churches are an invaluable wealth, sheltering heritage elements preserved in museums and historic buildings. Unheated churches have been used for centuries. Then, after installing one or more different heating systems, signs of rapid degradation appeared

Blockchain and IoT-Driven Optimized Consensus Mechanism for Electric Vehicle Scheduling at Charging Stations

The emerging demand for electric vehicles in urban cities leads to the need to install a huge number of charging stations. With this requirement, electric vehicle coordination and scheduling at charging stations in real-time becomes highly tedious. Thus, there is a need for an efficient scheduling mechanism for electric vehicle charging at charging stations. This paper proposes a novel blockchain and Internet of Things-based consensus mechanism called COME for secure and trustable electric vehicle scheduling at charging stations. The proposed mechanism is intending to resolve conflicts at charging stations. The integrated InterPlanetary File System protocol facilitates a cost-efficient mechanism with minimized bandwidth for electric vehicle scheduling. The proposed mechanism ensures that there is no loss for either the electric vehicle or the charging station. We formulate different scenarios for electric vehicle charging and apply different scheduling algorithms, including first-come first-served, longest remaining time first, and coalition game theory. The performance of the proposed COME consensus mechanism is estimated by comparing it with the practical Byzantine Fault Tolerance consensus protocol and traditional systems based on the charging demand, wait time, conflict resolution, scalability, and InterPlanetary File System bandwidth parameters. The performance results show that the proposed COME consensus mechanism ensures that electric vehicles can have their vehicle charged without any conflict and that the charging station can be satisfied in terms of profit. Moreover, the proposed COME consensus mechanism outperforms the both practical Byzantine Fault Tolerance consensus protocol and the traditional system in terms of scalability and conflict resolution along with additional parameters such as wait time, charging demand, and bandwidth analysis

Blockchain and IoT-Driven Optimized Consensus Mechanism for Electric Vehicle Scheduling at Charging Stations

The emerging demand for electric vehicles in urban cities leads to the need to install a huge number of charging stations. With this requirement, electric vehicle coordination and scheduling at charging stations in real-time becomes highly tedious. Thus, there is a need for an efficient scheduling mechanism for electric vehicle charging at charging stations. This paper proposes a novel blockchain and Internet of Things-based consensus mechanism called COME for secure and trustable electric vehicle scheduling at charging stations. The proposed mechanism is intending to resolve conflicts at charging stations. The integrated InterPlanetary File System protocol facilitates a cost-efficient mechanism with minimized bandwidth for electric vehicle scheduling. The proposed mechanism ensures that there is no loss for either the electric vehicle or the charging station. We formulate different scenarios for electric vehicle charging and apply different scheduling algorithms, including first-come first-served, longest remaining time first, and coalition game theory. The performance of the proposed COME consensus mechanism is estimated by comparing it with the practical Byzantine Fault Tolerance consensus protocol and traditional systems based on the charging demand, wait time, conflict resolution, scalability, and InterPlanetary File System bandwidth parameters. The performance results show that the proposed COME consensus mechanism ensures that electric vehicles can have their vehicle charged without any conflict and that the charging station can be satisfied in terms of profit. Moreover, the proposed COME consensus mechanism outperforms the both practical Byzantine Fault Tolerance consensus protocol and the traditional system in terms of scalability and conflict resolution along with additional parameters such as wait time, charging demand, and bandwidth analysis