Air conditioning accounts for a large share of energy usage in residential and tertiary sectors. Renewable technologies offer promising solutions to reduce the environmental impacts meeting buildings’ loads. The possibility using soil as thermal reservoir heating cooling systems has gained growing attention last decade due its high potential saving. In this paper, benefits achievable ground sou...

Hydraulic excavator energy saving is important to relieve source shortage and protect environment. This paper mainly discusses the energy saving for the hybrid hydraulic excavator. By analyzing the excess energy of three hydraulic cylinders in the conventional hydraulic excavator, a new boom potential energy recovery system is proposed. The mathematical models of the main components including b...

today, using new and renewable energy sources to replace fossil fuels is greatly expanded. the solar cells are devices that convert solar energy to electrical energy. solar cells based on organic materials, especially proteins, are one of these solar cells. for example, bacteriorhodopsin (br) which is one of the membrane proteins in halobacterium salinarum could be used in solar cells and parti...

Hybrid electric propulsion systems are interesting solutions to increase the energy efficiency of the road transportation technology. In this paper, several series hybrid propulsion system topologies are analysed in the Vehicle Simulation Programme (VSP). Especially the use of a DC/DC converter connected between the DC-bus and a energy source like a battery or the fuel cell stack, the supercapa...

A novel converter topology interfacing hybrid distributed energy sources and dc bus is proposed in this paper for integration of renewable energy sources with residential micro grid. This converter has low number of active device compared to the converters usually applied to similar application. Multi-Winding transformer is employed for achieving Low input and output current ripple, high voltag...