Cloud computing is emerging as a new paradigm of large-scale distributed computing. Cloud computing provides customers/users scalability, flexibility for their applications by providing collection of interconnected and virtualized servers. But as the requirement for cloud increases, so increase the consumption of huge amounts of electrical energy, contributing to high operational costs Green Ho...

This paper investigates how the losses in a Free Piston Energy Converter during start, stop and idling affects energy consumption and required power from the supply system. Simulation results indicate that the electrical machine efficiency is the most critical factor during start. Moreover, by choosing the correct amplitude of the starting force, energy consumption during start can be reduced. ...

Emerging smart user terminals and diverse multimedia applications that have driven recent explosive growth in mobile data traffic are increasing energy consumption in cellular networks at an incredible rate. Constituting a significant portion of network operating expenditure and in a context of global warming, rising energy utilization has become a key concern from both economic and environment...

The energy flow characteristics of Combined Cooling, Heating and Power (CCHP) system are analyzed in detail and the energy flow function is proposed for its two operational strategies: thermal load dominant mode and electrical load dominant mode. In order to improve its economic and environmental efficiency, an optimal economic and environmental dispatch model is built, which includes the fuel ...

This paper presents an approach for the combined optimization of energy systems including multiple energy carriers such as electricity, natural gas, and district heat. Power flow and conversion between the different energy infrastructures are described as multi-input multi-output coupling, what enables simple analysis and optimization of the flows. While previous work deals with operational opt...

HVAC operations play a significant role among various driving factors to improve energy performance of buildings. Extensive researches have been conducted on the design efficiencies and control strategies of HVAC system, but very few focused on the impacts of its operational faults on the building energy efficiency. Modeling and simulation of operational faults can lead to better understandings...

Salinity gradient energy (SGE) refers to the energy created from the difference in salt concentration between two streams. There are three types of SGE namely, pressure retarded osmosis (PRO), reverse electrodialysis (RED), and capacitive mixing (CapMix). All these technologies require membrane for the system to be operational. In this short review, the membranes modifications for each principl...

The small battery capacity, ubiquity, and operational diversity of wireless microsensor networks create unprecedented energy management challenges. The energy consumption of microsensors is determined not only by the node's physical hardware, but also by the algorithms and protocols that impart functional demands on the hardware. We therefore present design methodologies that foster energy savi...