Current developments of the European energy markets are influencing the operation strategy of heat suppliers. Especially providers of district heating systems fed by conventional heat production (i.e. CHP) have to react with appropriate measures to these changes. The integration of thermal storages, decentralization of the heat production, changing heating technologies or adjusting the temperat...

This paper investigates the optimal configuration of micro combustion engines (kWel or kWth), the associated volume of thermal heat storage and the thermal capacity of an additional boiler (kWth) for heat supply in residential buildings with 30 units, which have been built in Vienna (Austria) during different construction periods (before 1919 to 2011). The target function for the configuration ...

With the increase of transistors integrated onto a chip, multi core processor architectures have attracted much attention to achieve high effective performance, shorten development period and reduce the power consumption. To this end, the compiler for a multi core processor is expected not only to parallelize program effectively, but also to control the voltage and clock frequency of processors...

Microgrids (MGs) are promising approaches to proliferate distributed energy resources for electrification in remote areas. However, deal with the uncertainties of renewables and demand, special measures required. Energy storages, controllable loads reconfigurable networks some those that improve MGs' flexibility. Another alternative is temporarily coupling adjacent MGs support each other form c...

This paper summarizes lessons from an international analysis of the characteristics and field performance of thermal energy storage systems for load management. These systems shift electricity consumed for heating or cooling from high price on-peak periods to lower price off-peak periods. Storage media and system descriptions are reviewed, including a simplified illustration of the economic pri...

This paper focuses on the control strategies for islanded mode micro-grid system, which consists of wind turbines, photovoltaic panels, batteries and super-capacitors. When micro-grid is connected to the utility grid, DC-bus voltage is regulated by the inverter. And the magnitude and frequency of AC bus are the same with the grid. However when the microgrid works in island mode, DC-bus voltage ...