The effects of SBR and NR compounds on characteristics of different filing were examined. Natural rubber (NR RSS3) and styrene-butadiene rubber (SBR 1502) were used as the main matrix material. New compounds were formed by replacing the fillings in the general compound of the existing factory (SiO2, CaCO3) with 10 % blast furnace flue dust, rice husk, reclaimed rubber (recycled) and wood ash. Comparison of the new compounds with the existing compounds revealed a decrease in hardness and density.

Geothermal energy has a significant potential on hydrogen economy where it can contribute sustainable production of hydrogen by renewable energy sources. In this paper, using geothermal electricity in hydrogen production by electrolysis is investigated. The cost of producing one kg of hydrogen by electrolysis as functions of temperature and mass flow rate of geothermal fluid for steam and binary cycles is studied. The analysis is based on an economic model of geothermal power production. The results show that the cost of hydrogen is inversely proportional to both the geothermal resource temperature and mass flow rate.

Although hybrid vehicles are not widely used, they have an important role in terms of energy saving in the world. Control systems are one of the most important mechanisms in these vehicles for efficiency of energy usage. In this study, it is explained what the control systems of hybrid electric vehicles (HEV) are used and how they are used by review them. It is firstly shown how the internal components of the hybrid vehicle are controlled by the control systems and how the control unit is placed. The control systems are then individually classified among themselves. Control systems that are divided into two groups, which are rule based and optimization based, are collected under these two main headings.

The economic use of nonrenewable energy has become more important in recent years. One of the works done for this purpose is thermal insulation. Thermal insulation is the process of increasing the efficient use of thermal energy. Panel radiator is adjacent to the building wall and direct heat loss occurs from the outer surface to the wall facing surface of the panel radiator. This research was done to minimize the heat loss from the outer surface of the panel radiator. Firstly, the external heat loss from the panel radiator is calculated according to the uninsulated radiator. Then heat loss calculation was made for the panel radiator covered with polyurethane outer insulation material. In calculations with independent variables, the isolated panel radiator was found to provide 122.18 joules of energy per second into the room. This result shows that the outer surface insulated panel radiator provides significant energy efficiency.

In this study, material requirement planning was carried out for a company that produces briquette, uses several main products and hundreds of raw materials and semi-finished products. The fact that material requirements planning is not applied at the moment is causing the production of customer complaints, causing disturbances and confusion in stocks. This situation, which resulted in poor performance on behalf of the company, made material requirement planning inevitable. For the study, the company current situation was analyzed first. Using the data obtained afterwards, a regular MRP system was established with Akinsoft Wolvox ERP program and the resulting results were analyzed. The problems encountered are solved by the Akinsoft Wolvox ERP program, in which MRP production is made more efficient and faster than the normal structure, customer satisfaction is increased and inventory confusion is prevented.