Energy efficiency in Serbia: Research and development activity

Integrated fleet maintenance management represents implementation of measures, actions and decision making with the aim of decreasing total maintenance costs and increasing energy efficiency fulfilling requirements of three interdependent components: transport, maintenance and their environment. Therefore, a methodology for integrated fleet maintenance management is developed and presented in this paper. The purpose of the methodology is to contribute in increasing fleet's energy efficiency and evaluate managers' fleet maintenance management efficiency. The methodology was implemented in the company with own light and medium goods vehicle fleet. According to realized values of defined indicators, the maintenance management has become more efficient in the observed period. It contributed to specific fuel consumption reduction per transport volume, thereby increasing fleet's energy efficiency. Further, the fleet size was reduced, which affected the rational realization of the given transport volume in the observed period.

Section: Application Of the Proposed Methodology In Company With Vehimentioning

confidence: 99%

“…In 2014 the transport sector in European Union has a share of 33% in final energy consumption [2]. This trend is also represented in Serbia, where transport has a share greater than 50% in the consumption of final energy obtained from oil derivate [3]. In transport sector, road transport has a dominant role.…”

Section: Introductionmentioning

confidence: 99%

Influence of an integrated maintenance management on the vehicle fleet energy efficiency

Vujanovic¹,

Momcilovic²,

Medar³

2018

“…Nowadays, all over the world, a special attention is given to the reduction of the fossil fuel pollutant emissions, in all main areas of technical activities [1,2]. In the automotive area, the main pollutants appear because of the fuels combustion imperfection in internal combustion engines and the reduction of the exhaust emissions represents an important objective for the researchers in the field [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Experimental aspects of hydrogen use at diesel engine by diesel gas method

Cernat¹,

Pană²,

Negurescu³

et al. 2018

Due to good combustion properties of hydrogen comparative to diesel fuel, it can be used at the automotive Diesel engine for improvement of the energy performance and for reduction of the pollutants emissions level. The use of small hydrogen quantities which can be produced on the vehicle board represents another advantage. The paper presents some comparative results of the experimental investigations carried on a truck Diesel engine of 10.34 L displacement fuelled with diesel fuel and hydrogen at engine middle loads. The hydrogen was injected in the engine intake manifold at different volume flow rates from 9 L/min to 40 L/min. The general objective of the research is the analysis of the effects of the hydrogen use at the Diesel engines on the energy performance and on the pollutant emissions. The engine energy performance, pollutant emissions level and combustion parameters at the hydrogen Diesel engine fuelled were analysed and compared with diesel fuel operation. The researches established the favourable influences of the hydrogen use on the Diesel engine operating. The obtained results of the experimental investigations highlight the improving of engine performance at fuelling with hydrogen as addition in air.

“…In 2009, USD 2.6 billion was spent on importing energy products, which accounts for 16.9% of the country's entire volume of imports [2]. Energy consumption in public buildings, as well as in other sectors, is much higher than in developed countries, which significantly influences economy and living standard [3]. Consumption of thermal energy in public buildings in Serbia amounts to 200 kWh/m 2 on average, as opposed to 60-80 kWh/m 2 in Sweden with cooler climate and longer heating season [4].…”

Section: Introductionmentioning

confidence: 99%

Application and importance of cost-benefit analysis in energy efficiency projects implemented in public buildings: The case of Serbia

Mihić¹,

Petrovic²,

Vučković³

et al. 2012

The main objective of this paper is to present the advantages of using Cost-Benefit analysis in energy efficiency projects implemented in public buildings, and to prove the hypothesis that Cost-Benefit analysis boosts the effectiveness and efficiency of the said type of projects. The paper offers theoretical and practical explanation of the implementation of Cost-Benefit analysis in the relevant area. Since energy efficiency projects in public buildings usually represent a part of a broader portfolio of similar projects and their implementation demands allocation of substantial financial resources, communities are often be interested in achieving maximal economic and non-economic benefits. This paper aims to demonstrate that Cost-Benefit analysis can represent an excellent contribution when attempting to select the projects for implementation within a broader portfolio of energy efficiency projects in public buildings. This hypothesis was demonstrated by putting a greater emphasis on non-economic benefits and the costs arising from implementation of the aforementioned types of projects. In addition, a practical test of this hypothesis was performed through the implementation of an energy efficiency portfolio in public buildings, worth several tens of millions of dollars - the Serbian Energy Efficiency Project. The paper concludes that the use of Cost-Benefit analysis can help us to effectively evaluate and manage projects of this type aimed at achieving maximum benefits for the community in question