Renewable Energy Resources and Technologies
Bio-Based Lubricant Synthesis by Chemical Modification of Linoleic and Oleic Acid Mixture

Sharareh Esmaeili; Kambiz Tahvildari; Barat Ghobadian; Masoud Dehghani-Soufi; Sanaz Mohammadzadeh Koumleh; Tirth Panchal

Volume 9, Issue 4 , December 2022, , Pages 101-108

  The presence of increasing concerns and enforcement of growing regulations over environmental pollution are nowadays at play. The pollution arising from mineral oils is among the major concerns. With the gradual reducation of the world oil reserves, an increasing pressure comes into play for finding ...  Read More

Renewable Energy Economics, Policies and Planning
Policy Model of Renewable Energy Development in Iran’s Agriculture Sector

Somayeh Dehhaghi; Shahla Choobchian; Barat Ghobadian; Homayon Farhadian

Volume 9, Issue 2 , May 2022, , Pages 93-106

  The purpose of this study is to present a renewable energy policy model in the agricultural sector of Iran. To achieve this goal, a questionnaire consisting of 57 items was designed. The reliability of the questionnaire was confirmed by Cronbach's alpha (0.916). Also, to analyze the validity and reliability ...  Read More

Renewable Energy Resources and Technologies
Evaporation Characteristics of Diesel and Biodiesel Fuel Droplets on Hot Surfaces

Mehdi Zare; Barat Ghobadian; Seyed Reza Hassan-Beygi; Gholamhasan Najafi

Volume 7, Issue 2 , April 2020, , Pages 1-7

  In CI engines, the evaporation rate of fuel on various hot surfaces, including the combustion chamber, has a significant effect on deposit formation and accumulation, the exhaust emissions of PM and NOx, and their efficiency. Therefore, the evaporation of liquid fuel droplets impinging on hot surfaces ...  Read More

Environmental Impacts and Sustainability
Evaluation of Biomass Production and Wastewater Nutrient Removal Using Microalgae: Sustainable Strategy to CO2 Bio-Fixation and Bioenergy Production Approach

Sepideh Abedia; Fatemeh Razi Astaraiea; Barat Ghobadian; Omid Tavakoli; Hassan Jalili

Volume 4, Issue 4 , December 2017, , Pages 39-48

  Nowadays, the replacement of renewable energies such as biofuels is one of the main priorities in environmental programming and investments. This study is based on sustainable strategy towards integrating algal biomass generation as a green feedstock with wastewater treatment, CO2 bio-fixation, and bioenergy ...  Read More

Renewable Energy Resources and Technologies
An Investigation on Performance of Shrouding a Small Wind Turbine with a Simple Ring in a Wind Tunnel

Nemat Keramat Siavasha; Gholamhasan Najafi; Teymour Tavakoli; Barat Ghobadian; Esmail Mahmoodi

Volume 4, Issue 4 , December 2017, , Pages 49-56

  Ducted wind turbines are a kind of small wind turbine having a diffuser or any other shape around the rotor which increases the air flow through the blades and absorbs more power. In the present study, a small wind turbine was ducted with a relatively simple ring and its performance was investigated ...  Read More

Optimization of Biodiesel Production from Castor Oil Using a Microwave Via Response Surface Methodology (RSM)

Mohammad Kord; Seyed Mojtaba Sadrameli; Barat Ghobadian

Volume 3, Issue 4 , November 2016, , Pages 1-9

  The purpose of this research work was to investigate the optimum operating conditions for biodiesel production from castor oil using a microwave. The Box–Behnken design of experiment was carried out using the Design Expert 7. A response surface methodology (RSM) was used to analyze the influence ...  Read More