International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

In the days of industrial development towards low-carbon production and the establishment of a circular economy, special attention should be paid to the implementation of green policies in real practices and training of all personnel of enterprises. The presented study examines the “green” models of labor organization in the context of the transition to a low-carbon economy. Training of personnel in the ideas of an environmentally friendly economy becomes a good practice for achieving the commitments made by companies to improve energy efficiency and optimize resources. Thus, the policies of senior management are implemented in all working units of enterprises and give a common course for companies to achieve the set goals towards low-carbon production. Training has always been and will be the main means of achieving given goals, ideologies and tasks. Training also equalizes all employees, regardless of their hierarchical position in the system, to fulfill the same requirements.

In today’s global industrial environment, the need for sustainable, efficient, and energy-saving solutions for energy supply is more significant than ever and every enterprise that has adopted the policy of a green and low-carbon economy must seek such solutions. Enterprises must analyze their largest energy consumers and look for alternative options for generating and using “green energy”. Photovoltaic systems are among the most common solutions, but their dependence on weather conditions requires integration with energy storage systems. This report presents a model and analysis of an integrated hybrid photovoltaic system with battery storage, designed to provide electricity for energy-intensive production processes under the conditions of the Bulgarian climate and electricity market.

Globalization in the modern world covers all areas of life, economy and modern technology, politics and culture. The rapid development of information and communication technologies makes it possible to provide competitive advantages to business organizations. In recent decades, information systems have led to a dramatic increase in the productivity of large and small businesses. This enables an accelerated transition to climate neutrality and digital transformation of the economy, society and industry and requires new technologies, investments and innovations to ensure the sustainable development and competitiveness of every business and a resource-efficient and competitive economy as a whole. The integration of digital technologies in production processes plays an increasingly important role in shaping the competitiveness of enterprises and their sustainable development in the modern world.

The increasing demand for local products is forcing farmers to expand their production, which also increases the waste generated by the animal husbandry process. The utilization of organic waste from livestock farms is a serious task for farmers, and they need to look for alternative methods of treatment. In this paper, we consider the possibility of applying sludge from a pigs farm for fattening. Samples of dried to room humidity sludge taken from a pig manure metal lagoon were examined. The purpose of the study is to evaluate the prospect of sludge as an alternative fuel for the pig farm. A thermogravimetric (TD) and differential thermal (DTG) analysis method was used to investigate the sediment. These methods of analysis were used because of the wide range of information provided and the possibility of qualitative and quantitative analysis. The types of phase transitions in the processes of heating and cooling, the temperature interval, the time for their flow and the amount of heat absorbed or released are investigated