In this work, an integrated conversion system of coal to ammonia (NH3) is developed with the objectives total energy efficiency maximization and process simplification. The integrates drying, chemical looping hydrogen production, cryogenic nitrogen separation, NH3 synthesis, power generation. Due integration, exergy destruction from each individual process, as well whole system, can be reduced ...

Machine to technology has a broad application prospect in the 5G network, but there is bottleneck energy consumption of intelligent devices powered by battery. In this paper, we study energy-saving strategy millimeter-wave system. Firstly, Discontinuous Reception scheme based on Beam Measurement (BM-DRX) proposed avoid unnecessary beamforming. Secondly, modified frame structure and optimized be...

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...