School of Mechanical Engineering, University of Leeds,
Leeds, West Yorkshire, UK
Thermal Engineering Department, University of Nis,
Department of Thermal Engineering, National Technical University of Athens,
Mechanical Engineering Department, University of South Carolina,
Columbia, South Carolina, USA
Small scale solar powered cycles offer potential for exploiting renewable energy sources with a reasonable cost, environment friendly and adaptable operation. In order to enhance their overall efficiency, each of the cycles' components, for example compressor, expander and the solar heater needs to be separately enhanced. The aims of this special issue of this journal are to solicit newly high-quality, novel, and mature work that meets the standard of a journal paper. Such researches will surely enhance the solar energy as a main source in sustainable energy sources, reduces the depending on the fossil fuels and as a result decreases the greenhouse effect.