Welcome to the second of six issues in 2017. This issue contains seven manuscripts and has two focal points – renewable energy, and fuel consumption and emissions of internal combustion engines.
The first paper by Racharla and Rajan reviews solar tracking systems as the best alternative for increasing the efficiency of photovoltaic panels.
The second manuscript from Benhamza et al. confirms the effectiveness of a horizontal earth-air heat exchanger, showing good agreement between both experimental and numerical results.
The third paper by Aviña Jiménez et al. compares the energetic performance of a binary cycle and a modified binary cycle with flash evaporation, both using a low enthalpy geothermal resource. Their results hope to encourage new areas of opportunity for power generation, not only with low and medium enthalpy geothermal energy, but also with other renewable energy sources such as solar.
Next Rahman et al. select an appropriate waste-to-energy conversion technology for household waste in the Dhaka Mirpur Cantonment area by considering the three alternatives of anaerobic digestion, pyrolysis and plasma gasification.
The fifth paper by Lepak et al. identifies two novel methods for producing biodiesel using cottonseed oil. The proposed processes are capable of producing high quality biodiesel and have statistically significant higher induction periods when compared to other standard processing methods.
In the sixth paper, Wijayanto et al. investigate the reduction of fuel consumption and emission in a spark ignition engine using blended bioethanol–gasoline and a novel radiator-tube heater.
This issue concludes with a paper by Arocho et al. which uses a non-road construction equipment model to estimate emissions for four street and utility construction projects, thus providing a methodology to estimate emissions from street and utility infrastructure projects.
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