Cold pressing or compressive mechanical expression of oil from bulk oilseeds without thermal treatments or appreciable thermal effects facilitates the preservation of quality in expressed […]
Effect of commercial diesel fuel and hydrotreated vegetable oil blend on automobile performance
The new fuel ‘Pro Diesel’ that contains hydrotreated vegetable oil (HVO) was recently introduced in Baltic market. It raised some interest on performance of the […]
Comparison of exhaust emissions and fuel consumption of small combustion engine of portable generator operated on petrol and biobutanol
The paper is focused on the comparison of exhaust emissions and fuel consumption of small internal combustion engines operated on petrol and biobutanol. In case […]
Existing state of art of free-piston engines
Free-piston engines (FPE), as power generators for electricity and hydropower solutions, have come under intensive research and development during the last decade. The rapid development […]
Optimization of the balancer for LiFePO4 battery charging
Balancers of various constructions are currently used for the operation control of the batteries connected in series. Unidirectional balancers ensure proper charging of all battery […]
Endurance LiFePO4 battery testing
A lithium-iron-phosphate (LiFePO4) battery is nowadays considered one of the best types of batteries. Manufacturers and mostly suppliers indicate that LiFePO4 batteries have much longer […]
Indirect measurement of the battery capacity of smart devices
A crucial part of portable electronic devices (smartphones, smart watches, Tablet PCs, GPS devices, etc.) are the batteries. The dominant trend in the design of […]
Selection and evaluation of degradation intensity indicators of gas combustion engine oil
The paper is focused on the analysis of data obtained during the operation of gas combustion engines running on biogas. The observed engines were running […]
Experimental evaluation of hydraulic design modifications of radial centrifugal pumps
In the field of small hydropower, pump units in turbine mode (PAT) are frequently used as alternative to conventional turbines. In order to maximize their […]
Mathematical model describing the drying curves of false banana´s fibre (Ensete ventricosum)
Drying processes play an important role in the preservation of agricultural products. They are defined as a process of moisture removal due to simultaneous heat […]