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Volume 8 Number 3Pages1547-2294 Part March Year 2015

15 articles in this issue 

Enrico Sciubba

We are pleased to announce the Energies Best Papers awards for 2015. Energies is an open access journal of energy-related scientific research, technology development, and policy and management studies. It publishes reviews, regular research articles, and ... see more

 

Hao Bai, Shihong Miao, Xiaohong Ran and Chang Ye

A virtual power plant takes advantage of interactive communication and energy management systems to optimize and coordinate the dispatch of distributed generation, interruptible loads, energy storage systems and battery switch stations, so as to integrate... see more

 

Juan Carlos Antolín-Urbaneja, Alain Cortés, Itziar Cabanes, Patxi Estensoro, Joseba Lasa and Marga Marcos

One of the key systems of a Wave Energy Converter for extraction of wave energy is the Power Take-Off (PTO) device. This device transforms the mechanical energy of a moving body into electrical energy. This paper describes the model of an innovative PTO b... see more

 

Vincenzo Liso, Yingru Zhao, Wenyuan Yang and Mads Pagh Nielsen

In this paper a solid oxide fuel cell (SOFC) system for cogeneration of heat and power integrated with a stratified heat storage tank is studied. The use of a storage tank with thermal stratification allows one to increase the annual operating hours of CH... see more

 

Anna Laura Pisello

In recent years there has been a growing interest in the development and thermal-energy analysis of passive solutions for reducing building cooling needs and thus improving indoor thermal comfort conditions. In this view, several studies were carried out ... see more

 

Carlos Alberto Cuvilas, Efthymios Kantarelis and Weihong Yang

Over the last years, the pretreatment of biomass as a source of energy has become one of the most important steps of biomass conversion. In this work the effect of a mild subcritical hydrothermal carbonization of a tropical woody biomass was studied. Resu... see more

 

Jun Yang, Zhili Zeng, Yufei Tang, Jun Yan, Haibo He and Yunliang Wu

In power systems, although the inertia energy in power sources can partly cover power unbalances caused by load disturbance or renewable energy fluctuation, it is still hard to maintain the frequency deviation within acceptable ranges. However, with the v... see more

 

Jae-Hyun Han and Young-Cheol Lim

In this study, to achieve the constant current drive and brightness control without a separate pulse width modulation (PWM) converter, a single converter is designed and verified by experiment under the condition of a multiple LED light load with differe... see more

 

Florian Heberle and Dieter Brüggemann

We present a thermo-economic evaluation of binary power plants based on the Organic Rankine Cycle (ORC) for geothermal power generation. The focus of this study is to analyse if an efficiency increase by using zeotropic mixtures as working fluid overcompe... see more

 

Jin-Cherng Shyu, Po-Yan Wang, Chien-Liang Lee, Sung-Chun Chang, Tsung-Sheng Sheu, Chun-Hsien Kuo, Kun-Lung Huang and Zi-Yi Yang

An air-breathing direct formic acid microfluidic fuel cell, which had a self-made anode electrode of 10 mg/cm2 Pd loading and 6 mg/cm2 Nafion content, was fabricated and tested. The microfluidic fuel cell was achieved by bonding a PDMS microchannel that w... see more

 

Timothy Ault, Steven Krahn and Allen Croff

Energy industries account for a significant portion of total rare earth usage, both in the US and worldwide. Rare earth minerals are frequently collocated with naturally occurring radioactive material, imparting an occupational radiological dose during re... see more

 

Andreas Lemmer, Yuling Chen, Anna-Maria Wonneberger, Frank Graf and Rainer Reimert

Two-stage pressurized anaerobic digestion is a promising technology. This technology integrates in one process biogas production with upgrading and pressure boosting for grid injection. To investigate whether the efficiency of this novel system could be f... see more

 

Shi Weng Gui, Zhen Jun Lin and Sheng Hua Huang

In the research field of multilevel converters, three-level NPC (neutral-point-clamped) converters, which unfortunately may cause the deviation of the neutral-point voltage of DC-link capacitors, are widely discussed. Theoretically, virtual space vector m... see more