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Journal of Thermal Analysis and Calorimetry

, Volume 137, Issue 6, pp 2081–2097 | Cite as

Modeling and economic analysis of a parabolic trough solar collector used in order to preheat the process fluid of furnaces in a refinery (case study: Parsian Gas Refinery)

  • Bagher Mokhtari Shahdost
  • Mohammad Ali Jokar
  • Fatemeh Razi AstaraeiEmail author
  • Mohammad Hossein AhmadiEmail author
Article
  • 59 Downloads

Abstract

Nowadays, due to the increased greenhouse gas emissions and high energy prices, it is essential to use renewable energy sources in different industrial applications. In this study, the technical and economic assessment of using solar energy in order to preheat the process fluid before entering the furnaces in refinery is carried out. The furnace unit 400 (an indirect furnace) used in Parsian Gas Refinery, which uses natural gas as a fuel, is studied. Mid-temperature solar energy is a practical energy source in this case with respect to the temperature range of the heated process fluid by furnaces which is about 300 °C. Among different types of solar thermal systems for collecting the solar energy, the parabolic trough solar collector is selected in this research because of the advantages it offers including its temperature range and lower cost. The proposed solar thermal preheating system coupled with the furnace is modeled using TRNSYS software. In the optimum condition, the maximum amount of fuel that can be saved using solar energy for the studied furnace is 1,996,000 m3 per year which is about 23.8% of the fuel consumption of the furnace and is responsible for 3557.7 ton CO2 emissions per year. Finally, using solar heat exchanger before the furnace considering different sizes of solar farm is economically evaluated, taking into account different fuel prices and different mortgage rates. The results show that at natural gas prices more than 45 cents per m3 as the fuel, in different sizes of the system, it is perfectly economic to use solar thermal collector as a preheating system.

Keywords

Parabolic trough collector Solar heat exchanger Furnace Economic analysis 

Notes

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Bagher Mokhtari Shahdost
    • 1
  • Mohammad Ali Jokar
    • 1
  • Fatemeh Razi Astaraei
    • 1
    Email author
  • Mohammad Hossein Ahmadi
    • 2
    Email author
  1. 1.Department of Renewable Energies and Environment, Faculty of New Sciences and TechnologiesUniversity of TehranTehranIran
  2. 2.Faculty of Mechanical EngineeringShahrood University of TechnologyShahroodIran

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