Research Article Renewable Energy Resources and Technologies
1. Synthesis and Optimization Process of Ethylene Glycol-Based Biolubricant from Palm Kernel Oil (PKO)

Mohammed Ibrahim Shaba; Aliyu Mohammed; Dauda Solomon Musa; Balami Ayuba Audu; Yunusa Baba Katamba

Volume 5, Issue 2 , Spring 2018, Pages 1-9

http://dx.doi.org/10.30501/jree.2018.88495

Abstract
  Internationally exploited lubricants are derived from coal and petroleum. Due to their high consumption and effects of their long-term pollution on the environment, it is imperative to use renewable and cheap feedstock for the synthesis of bio-based lubricants. This study presents the synthesis and optimization ...  Read More

Research Article Advanced Energy Technologies
2. Numerical Study of Curved-Shape Channel Effect on Performance and Distribution of Species in a Proton-Exchange Membrane Fuel Cell: Novel Structure

Tuhid Pashaee Golmarz; Sajad Rezazadeh; Narmin Bagherzadeh

Volume 5, Issue 2 , Spring 2018, Pages 10-21

http://dx.doi.org/10.30501/jree.2018.88506

Abstract
  In this paper, a three-dimensional, single-phase proton-exchange membrane fuel cell (PEMFC) is studied numerically. Finite volume method was used for solving the governing equations and, consequently, the numerical results were validated by comparing them with experimental data, which showed good agreement. ...  Read More

Research Article Renewable Energy Resources and Technologies
3. Experimental Investigation of the Efficiency of a Semi-Spherical Solar piping Collector

Mojtaba Moravej; Fatemeh Namdarnia

Volume 5, Issue 2 , Spring 2018, Pages 22-30

http://dx.doi.org/10.30501/jree.2018.88602

Abstract
  Solar water heaters are good tools for saving fuel. The main component of these water heaters is collectors, which are responsible for absorbing solar energy and transferring it to the working fluid with the least heat dissipation. The present study is an experimental study of the performance of the ...  Read More

Research Article Renewable Energy Resources and Technologies
4. Application of Phase Change Material (PCM) for Cooling Load Reduction in Lightweight and Heavyweight Buildings: Case Study of a High Cooling Load Region of Iran

Mohammad Ahmadzadehtalatapeh; Shahrokh Khaki

Volume 5, Issue 2 , Spring 2018, Pages 31-40

http://dx.doi.org/10.30501/jree.2018.88632

Abstract
  The application of phase change material (PCM) for energy conservation purposes in the residential buildings was investigated in the present study. Two types of building in terms of materials as the lightweight building (LWB) and heavyweight building (HWB) located in a high cooling load demanding region ...  Read More

Research Article Advanced Energy Technologies
5. Design and Implementation of the Rotor Blades of Small Horizontal Axis Wind Turbine

Tamer Nabil; Mohamed Khairat Dawood; Tamer Mansour

Volume 5, Issue 2 , Spring 2018, Pages 41-51

http://dx.doi.org/10.30501/jree.2018.88633

Abstract
  Since the renewable resources of energy have become extremely important, especially wind energy, scientists have begun to modify the design of the wind turbine components, mainly rotor blades. Aerodynamic design considered a major research field related to power production of a small horizontal wind ...  Read More

Research Article Renewable Energy Resources and Technologies
6. Experimental Investigation of the Thermal Performance of Vacuum Tube Solar Collectors (VTSC) Using Alumina Nanofluids

Seyed Amir Hossein Zamzamian; Mohsen Mansouri

Volume 5, Issue 2 , Spring 2018, Pages 52-60

http://dx.doi.org/10.30501/jree.2018.88634

Abstract
  The enhancement of the thermal performance of Vacuum Tube Solar Collectors (VTSC) was studied by using alumina nanofluid as working fluid. VTSC is a simple and commonly utilized type of collector. This study established the heat transfer experimental model of all glass VTSCs used in a forced-circulation ...  Read More