Nowadays, there are numerous new features available in CFD (computational fluid
dynamics) that can simulate complex physical phenomena, which used to be challenging to …

In this paper, we introduce wind energy and wind turbines by highlighting the
unconventional wind turbines eg, the Counter-Rotating Dual Rotor Wind Turbines (CO …

The compressor plays a significant role in the structural design and operation of heat pump,
as it greatly affects the energy efficiency of the equipment. The mathematical equation of the …

We present a new heat pump system that produces domestic hot water with the help of
geothermal energy. In addition to the production of domestic hot water, the system is also …

The paper describes passive and active solar renewable energy systems, as well as a
concrete example of designing a solar system and heat pumps for the preparation of …

Farkas Bolyai is known among mathematicians. However, he was also interested in the
design and construction of stoves and ovens. In our paper we study a cast iron stove …