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Feasibility Study and Modelling of Using Absorption Refrigeration System for Recovering Heat in Oil and Gas Industry

HeidariMohghadam, Hamid Reza | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46465 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Sattari, Sorena
  7. Abstract:
  8. By growing the global demand for energy and use the fosil fuel for it by knowing the issue of increase in their resourses؛ it’s important to use new technologies for these energies in an optimum way.
    Most of industrial process uses a lot of thermal energy by burning fossil fuel to produce steam or heat for the purpose. One of the most important processes that use energy is refrigeration. After these processes, heat is rejected to the surrounding as waste. This waste heat can be converted to a useful refrigeration by using a heat operated refrigeration system, such as an absorption refrigeration cycle. This can be a useful pattern to improve thermal efficiency of process and reduce its energy consumption. To improve the energy conversion of a process the most important issue is to find where the energy wastes. To find it we can use an exergy analaysis to show the quality and quantity of energy usage in a plant and the irreversibility of processes to find the waste energy spots.
    This thesis details the modeling procedure for single and double effect water/lithium bromide and single effect ammonia/water chillers in Aspen software and the comparison of these models to published modeling results and experimental data that shows acceptable agreement within 5-7% errors. Additionally, parametric studies were conducted for a range of evaporator temperatures, and ambient conditions. Finally, by integrating the model with olefin refrigeration try to show some technical and economical result through three scenarios that has been introduced then by the result double effect absorption refrigeration can be more reliable to use in the process
  9. Keywords:
  10. Economic Analysis ; Exergy Analysis ; Waste Heat Recovery Power Generation (WHRPG)Technology ; Refrigeration ; Absorption Refrigeration Stystem ; Olefin Refrigeration Process

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