Abstract
The paper is motivated by the need to provide relevant synthetic indicators, on the basis of which decision makers can evaluate and compare, the extent to which the proposed projects fall within the goals of sustainable development - economic efficiency, environmental responsibility, social solidarity, circular economy, production and responsible consumption. The case study, introduced in the paper, refers to the real and optimal thermal energy balance, made for an installation for the preparation of asphalt mixtures. The approached example took into account the perspective of multiplication and modernization of asphalt mixture preparation stations. Based on the measurements, performed “on site” and the calculations performed, the values of some indicators referring to energy performance, economic efficiency and environmental impact were obtained. The obtained indicators were aggregated in a global indicator, useful for administrative decision makers.
Highlights
One of the priorities of Romania's economic consolidation refers to the development and modernization, in sustainable conditions, of the road structure elements
Through the consequences of increasing its value, determines the reduction of related consumption and other resources, responding to the desires of sustainable development focused on the formulation: maximizing benefits while minimizing resource consumption and safeguarding the biodiversity of the natural environment. [2]
The aim of the paper is to propose an aggregate indicator for energy, economic and environmental quantification, to increase the energy efficiency of processes in a plant for the preparation of asphalt mixtures
Summary
One of the priorities of Romania's economic consolidation refers to the development and modernization, in sustainable conditions, of the road structure elements. Ancillary installations: inclined rotary drum dryer, equipped with a gas burner with high thermal capacity; flue gas filter battery discharged from the dryer; hot material elevator; site for final sorting of hot aggregates; hot filler dispenser; mixer; prepared mixer conveyor chip; bunkers storage prepared mix; cloudy dust storage container - the fraction of fine dust resulting from the flue gas filter from the dryer. When it is discharged into the container, it is moistened with water, forming a kind of mud; control cabin. Both the operation regime and the correctness of the operation, as well as the quality maintenance, have considerable effects on the value of the energy used. [4, 5]
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